PART H. ENFORCEMENT
RH-70.
Violations.
Any person who violates any of the provisions of this Act or rules,
regulations, or orders in effect pursuant thereto of the Department shall, upon
conviction thereof, be punished by a fine of not less than one hundred dollars
($100.00) nor more than two thousand dollars ($2,000.00), or by imprisonment
for not more than six (6) months, or be both fined and imprisoned.
Paragraph RH-30Ub) will add the following:
(b)
(9)
Ionizing radiation measuring instruments containing, for purposes of internal
calibration or standardization, one or more sources of , radioactive material;
.Provided, That;'
(A) Each source contains no
more than one exempt quantity set forth in Schedule B, and
(B) Each instrument contains no more than ten
exempt quantities. For purposes of-Paragraph-RH 30T(b-)(9), an instrument's
source(s) may contain either one type or different types of radionuclides and
an individual exempt quantity may be composed of fractional parts of one or
more of the exempt quantities in Schedule B, provided that the sum of such
fractions shall not exceed unity.
(C) For purposes of this Paragraph
RH-3pl(b)(9), 0.05 microcurie of Americium-241 is considered an exempt quantity
under Schedule B. Baragraph RH-402, General Licenses - Other Radioactive
Materials, is changed by adding titles to Subparagraphs (a) through (g) as
follows:
Subparagraph (a) is entitled:
Certain Devices and Equipment
Subparagraph (b) is entitled:
Certain Measuring,
_Gaugi.ng...or_.ControlIing.,Deyices
Subparagraph (c) is entitled:
Luminous Safety Devices in
Aircraft
Subparagraph (d) is entitle'd:
Calibration and Reference
Sources
Subparagraph (e) is entitled:
Ownership of Radioactive
Material
Subparagraph (f) is entitled: Ice Detection
Devices
Subparagraph (g) is entitled:
Intrastate Transportation of Radioactive
Material
Subparagraph (h) is changed as follows:
(h)
General
License for Use of Radioactive Material for Certain In Vitro
Clinical or Laboratory Testing.
(1) A general license is hereby issued to any
physician, veterinarian clinical laboratory or hospital to receive, acquire,
possess, transfer, or use, for any of the following stated tests, in accordance
with the provisions of paragraphs RH-402(h)(2), (3), (4). (5) and (6) of this
section, the following radioactive;, materials in prepackaged units:
(A) Iodine-125, in units not exceeding 10
microcuries each for use in in vitro clinical or
laboratory tests not involving internal or external administration of
radioactive material, or the radiation therefrom, to human beings or animals.
(B) Iodine-131, in units not
exceeding 10 microcuries each for use in in vitro
clinical or laboratory tests not involving internal or external administration
of radiqactive material, or the radiation therefrom, to human beings or
animals.
(C) Carbon-14, in units
not exceeding 10 microcuries each for use in in vitro
clinical or laboratory tests not involving internal or external administration
of radioactive material, or the radiation therefrom, to human beings or
animals.
(D) Hydrogen-3 (tritium),
in units not exceeding 50 microcuries each for use in in
vitro clinical or laboratory tests not involving
internal or external administration of radioactive material, or the radiation
therefrom, to human beings or animals.
(E) Iron-59, in units not exceeding 20
microcuries each for use in in vitro clinical or laboratory tests not involving
internal or external administration of radioactive material, or the radiation
therefrom, to human beings or animals.
(F) Selenium-75, in units not exceeding 10
microcuries each for use in in vitro clinical or
laboratory tests not involving internal or external administration of
radioactive material, or the radiation therefrom, to human beings or
animals.
(G) Mock Iodine-125
reference or calibration sources, in units not exceeding 0.05 microcurie of
Iodine-129 and 0.005 microcurie of Americium-241 each for use in in vitro
clinical or laboratory tests not involving internal or external administration
of radioactive material, or the radiation therefrom, to human beings or
animals.
(2) No person
shall receive, acquire, possess, use, or transfer radioactive material pursuant
to the general license established by Paragraph RH-402(h)(l) until the
individual has filed Department Form RH-102 "Registration Certificate -In
Vitro Testing With Radioactive Material Under General
License" with the Director of Radiological Health Section, Arkansas Department
of Health and received from the Department a validated copy of Department Form
RH-102 with registration number assigned or until he has been authorized
pursuant to Paragraph RH-404(d) to use radioactive material under the general
license in Paragraph RH-402(h). The registrant shall furnish on Department Form
RH-102 the following information and such other information as may be required
by that form:
(A) Name and address of the
registrant;
(B) The location of
use; and
(C) A statement that the
registrant has appropriate radiation measuring instruments to carry out in
vitro clinical or laboratory tests with radioactivematerials as authorized
under the general license in Paragraph RH-402(h), and that such tests will be
performed only by personnel competent in the use of such
instrumen~ts~lind~fn"the handling of the radioactive materials.
(3) A person who receives,
acquires, possesses, or uses radioactive material pursuant to the general
license established by Paragraph RH-402(h)(l) shall comply with the following:
(A) The general licensee shall not possess at
any one time, pursuant to the general license in Paragraph RH-402{h)(l), at any
one location of storage or use, a total amount of Iodine-125, Iodine-131,
SelGnium-75, and/or Iron-59 in excess of 200 microcuries.
(B) The general licensee shall store the
radioactive material, until used, in the original shipping container or in a
container providing equivalent radiation protection.
(C) The general licensee shall use the
radioactive material only for the uses authorized by Paragraph
RH-402{h)(l).
(D) The general
licensee shall not transfer the radioactive material except by transfer to a
person authorized to receive it pursuant to a license issued by the Department,
the U.S. Nuclear Regulatory Commission, or any Agreement State , nor transfer
the radioactive material in any manner other than in the unopened, labeled
shipping container as received from "the supplier. (E) The general licensee
shall dispose of the Mock Iodine-125 reference or calibration sources described
in Paragraph RH-402(h)(l)(GJ as required by Paragraph RH-1400.
(4) The general licencee
shall not receive, use radioactive material pursuant to Paragraph RH-402(h)(l):
(A) Except as prepackaged units which are
labeled in accordance with the provisions of a specific license issued by the
U.S. Nuclear Regulatory Commission, or any Agreement State that authorizes
manufacture and distribution of Iodine-125, Iodine-131, Carbon-14, Hydrogen-3
(Tritium), Selenium-75, Iron-59, or Mock Iodine-125 for distribution to persons
generally licensed under Paragraph RH-402(h){l).
(B) Unless the following statement, or a
substantially similar statement which contains the information called for in
the following statement, appears on a label affixed to each prepackaged unit or
appears in a leaflet or brochure which accompanies the package;
"This radioactive material may be received, acquired,
possessed, and used only by physicians, veterinarians in the practice of
veterinary medicine, clinical laboratories or hospitals and only for in vitro
clinical or laboratory tests not involving internal or external administration
of the material, or the radiation therefrom, to human beings or animals. Its
receipt, acquisition, possession, use, and transfer are subject to the
regulations and a general license of the U.S. Nuclear Regulatory Commission or
of a State with which the Commission has entered into an agreement for
theexercise of regulatory^ authority Name of Manufacturer
(5) The registrant
possessing or using radioactive materials under" the general license of
Paragraph RH-402(h')(l) shall report in writing to the Director of Radiological
Health Section any changes in the information furnished by him in the " Regi
stration Certificate - In Vitro Testing with
Radioactive Material Under General License", Department Form RH-102 The report
shall be furnished within 30 days after the effective date of such change.
(6) Any person using radioactive
material pursuant to the general license of Paragraph RH-402(h)(l) is exempt
from the requirements of Section 3, "Standards for Protection Against
Radiation" with respect to radioactive material covered by that general
license, except that such persons using the Mock Iodine-125 described in
Paragraph RH-402(1)(G) shall comply with the provisions of Paragraphs RH-1400,
RH-1501, and RH-T502.
Paragraph RH-404(d) will be added as follows:(d) Any licensee
who is licensed pursuant to Paragraph RH-405(c) for one or more
of the medical use groups in Schedule D also is authorized to use
radioactive material under the general license in Paragraph RH-402(h) for the
specified in vitro uses without filing Department Form RH-102 as required by
Paragraph RH-402(h){2) provided, that-the licensee. Js..subject_to. other
pxpy.isions of Paragraph RH-402(h).
Paragraph RH-405(b) changed to read:
(b)
Licensing of
Individual Physicians for Human Use of Radioactive Materials.
(1) An application by an individual physician
or group of physicians for a specific license for human use of radioactive
material will be approved if:
(A) The
applicant satisfies the general requirements specified in Paragraph
RH-404.
(B) The application is for
use in the applicant's practice in an office outside a medical
institution;
(C) The applicant has
access to a hospital possessing adequate facilities to hospitalize and monitor
the applicant's radioactive patients whenever 1t is advisable; and
(D) The applicant has extensive experience in
the proposed use, the handling and administration of radioisotopes, and where
applicable, the clinical management of radioactive patients.
(2) The Department will not
approve an application by an individual physician or group of physicians for a
specific license to receive, possess, or use radioactive material on the
premises of a medical institution unless:
(A)
The use of radioactive material is limited to:
(i) The administration of
radiopharmaceuticals for diagnostic or therapeutic purposes;
(ii) The performance of diagnostic studies on
patients to whom a radiopharmaceutical has been administered;
(iii) The performance of in vitro diagnostic
-studies; -or (1v) The calibration and quality control checks of radioactive
assay instrumentation, radiation safety instrumentation and diagnostic
instrumentation;
(B) The
physician brings the radioactive material with him/her and removes the
radioactive material when he/she departs, (The institution cannot receive,
possess, or store radioactive material other than the amount of material
remaining in the patient); and
(C)
The medical institution does not hold a radioactive material license under
Paragraph RH-405(a).
(D) The
physician obtains written approval from the institution's administration
authorizing he/she to bring radioactive material into the institution.
Paragraph RH-405(c) is changed to read as follows:
(c)
Specific Licenses for Certain Groups of Medical/Uses of Radioactive
Material(1) Subject to the
provisions of Paragraph RH-405(c)(2) ,(3), and (4), an application for a
specific license pursuant to Paragraphs (a), (b) or (d) of this Section for any
medical use or-uses-of radioactive material specified in one or more of Groups
I to V, inclusive, of Schedule D will be approved for all of the uses within
the group or groups which include the use or uses specified in the application
if:
(A) the applicant satisfies the
requirements of Paragraphs (a), (b) or (d) of this Section;
(B) the applicant, or the physician
designated in the application as the individual user, has adequate clinical
experience in the types of uses included in the group or groups;
(C) the applicant, or the physicians and all
other personnel who will be involved in the preparation and use of the
radioactive material, have adequate training and experience In the handling of
radioactive material appropriate to their participation in the uses Included in
the group or groups;
(D) the
applicant's radiation detection and measuring instrumentation is adequate for
conducting the procedures involved in the uses included in the group or groups;
and
(E) the applicant's radiation
safety operating procedures are adequate for handling and disposal of the
radioactive material involved in the uses included in the group or
groups.
(2) Any licensee -
whois authorized to use radioactive material pursuant to one or more groups in
Paragraph RH-405(c)(l) and Schedule D is subject to the following conditions:
(A) For groups I, II, IV, and V, no licensee
shall receive, possess, or use radioactive material except as a
radiopharmaceutical manufactured in the form to be administered to the patient,
labeled, packaged, and distributed in accordance with a specific license issued
by the U.S. Nuclear Regulatory Commission pursuant to Section 32.72 of 10 CFR
Part 32, or a specific license issued by an Agreement State pursuant to
equivalent regulations.
(B) For
Group III, no licensee shall receive, possess, or use generators or reagent
kits containing radioactive material or shall use reagent kits that do not
contain radioactive material to prepare radiopharmaceuticals containing
radioactive material, except:
(i) reagent
kits not containing radioactive material that are approved by the Department,
the U.S. Nuclear Regulatory Commission, or an Agreement state for use by
persons licensed pursuant to Paragraph RH-405(c) and Schedule D or equivalent
regulations; or
(ii) generators or
reagent kits containing radioactive material that are manufactured, labeled,
packaged, and distributed in accordance with a specific license issued by the
U.S. Nuclear Regulatory Commission pursuant to Sec. 32.73 of 10 CFR Part 32, or
a specific license issued by an Agreement State pursuant to equivalent
regulations.
(C) For
Group III, any licensee using generators or reagent kits shall:
(i) Elute the generator, or process
radioactive material with the reagent kit, in accordance with instructions
approved by the Nuclear Regulatory Commission or an Agreement State and
furnished by the manufacturer on the label attached to or in the leaflet or
brochure that accompanies the generator or reagent kit;
(ii) Before administration to patients,
cause each elution or extraction of Technetium-99m from a Molybdenum-99/
Technetium-99m generator to be tested to determine either the total
Molybdenum-99 activity or the concentration of Molybdenum-99. This testing
shall be conducted according to written procedures and by personnel who have
been specifically trained to perform the test;
(iii) Prohibit the administration to patients
of Technetium-99m containing more than 1 microcurie of Molybdenum-99 per
millicurie of"TechnetiUm-99m, or ' more than 5 microcuries of Molybdenum-99 per
administered dose, at the time of administration; and
(iv) Maintain for 2 years for Department
inspection records of the Molybdenum-99 test conducted on each elution from the
generator.
(3)
Any licensee who is licensed pursuant to Paragraph RH-405(c)(l) for one or more
of the medical use groups in Schedule 0 also is authorized to use radioactive
material under the general license in Paragraph RH-402(h) for the specified in
vitro uses without filing Department Form RH-102 as required by Paragraph
RH-402(h); provided, that the licensee is subject to the other provisions of
Paragraph RH-402(h).
(4) Any
licensee who is licensed pursuant to Paragraph RH-405(c)(l) for one or more of
the medical use groups in Schedule D also is authorized, subject to the
provisions of Paragraph RH-405(c) (4) and (5), to receive, possess, and use for
calibration and reference standards:
(A) any
radioactive material listed in Group I, Group II, or Group III of Schedule D of
this part with a half-life not longer than 100 days, in amounts not to exceed
15 millicuries total;
(B) any
radioactive material listed in Group I, Group 11, or Group III of Schedule D of
this part with half-life greater than 100 days in amounts not to exceed 200
microcuries total;
(C)
Technetium-99m in amounts not to exceed 30 millicuries; and
(D) any radioactive material, in amounts not
to exceed 3 millicuries per source, contained in calibration or reference
sources that have been manufactured, labeled, packaged, and distributed in
accordance with a specific license issued by the U.S. Nuclear Regulatory
Commission pursuant to Section 32.74 of 10 CFR Part 32, or a specific license
issued to the manufacturer by an Agreement State pursuant to equivalent
renulations.
(5)
(A) Any licensee who possesses sealed sources
as calibration or reference sources pursuant to Paragraph RH-405(c)(4) shall
cause each sealed source containing radioactive material, other than
Hydrogen-3, with a half-life greater than 30 days in any form other than gas,
to be tested for leakage and/or contamination at intervals not to exceed 6
months. In the absence of a certificate from a transferor indicating that a
test has been made within 6 months prior to the transfer, the sealed sources
should not be used until tested, provided, however, that no leak tests are
required when:
(i) the source contains 100
microcuries or less of beta and/or gamma emitting material or 10 microcuries or
less of alpha emitting material, or
(ii) the sealed source is stored and is not
being used; such sources shall, however, be-tested for leakage prior to any use
or transfer unless they have, been leak tested within 6 months prior to the
date of use or transfer.
(B) The leak test shall be capable of
detecting the presence of 10,005 microcurie of radioactive material on the test
sample. The test sample shall be taken from the sealed source or from the
surfaces of the device in which the sealed source is mounted or stored on which
contamination might be expected to accumulate. Records of leak test results
shall be kept in units of microcuries and maintained for inspection by the
Department.
(C) If the leak test
reveals the presence of 0.005 microcurie or more of removable contamination,
the licensee shall immediately withdraw the sealed source from use and shall
cause it to be decontaminated and repaired or to be disposed of in accordance
with Section 2 and Section 3 of these regulations. A report shall be filed
within 5 days of the test with the Department describing the equipment
involved, the test results, and the corrective action
taken.
(6) Any licensee .
who possesses and uses calibration and reference sources pursuant to Paragraph
RH-405(c)(4)(iv) shall:
(A) follow the
radiation safety and handling instructions approved by the Department, the U.S.
Nuclear Regulatory Conmission or an Agreement State and furnished by the "
manufacturer on "the label-attached to the source, or permanent container-there
of or in the-leaflet-or brociiure that accompanies the source, and maintain
such instruction in a legible and conveniently available form; and
(B) conduct a quarterly physical inventory to
account for all sources received and possessed. Records of the inventories
shall be maintained for inspection by the Department and shall include the
quantities and kinds of radioactive material, location of sources, and the date
of the inventory.
Paragraph RH-408 is changed as follows:
RH-408.
Specific Terms and Conditions of Licenses.
(a) Each license issued pursuant to this
regulation shall be subject to all the provisions of the Act now or hereafter
in effect and to all rules, regulations and orders of the Department.
(b) Neither the license nor any right under
the license shall be assigned or otherwise transferred in violation of the
provisions of the Act.
(c) Each
person licensed by the Department pursuant to this regulation shall confine
their use and possession of the material licensed. to the locations and
purposes authorized in the license. Except as otherwise provided in the
license, a license issued pursuant to the regulations in Section 2, shall carry
with it the right to receive, acquire, own, and possess, radioactive material.
Preparation for shipment and transport of radioactive material shall be in
accordance with the provisions of Section 4 of these regulations.
(d) The Department may incorporate, in any
license issued pursuant to Section 2 of these regulations, at the time of
issuance, or thereafter by appropriate rule, regulation or order, such
additional requirements and conditions with respect to the licensee's receipt,
possession, use and transfer of radioactive material as it deems appropriate or
necessary in order to:
(1) Protect health or
to minimize danger to life or property;
(2) Require such reports and the keeping of
such records, and to provide for such inspections of activities under the
license as may be necessary or appropriate to effectuate the purposes of the
Act and regulations thereunder.
(e) Each licensee shall notify the Department
in writing when the licensee decides to permanently discontinue all activities
involving materials authorized under the license. This notification requirement
applies to all specific licenses issued under Section 2 of these
regulations.
(f) Each licensee
preparing Technetium-99m radiopharmaceuticals from Molybdenum-99/Technetium-99m
generators shall test the generator eluates for Molybdenum-99 breakthrough in
accordance with Paragraph RH-405(c)(2)(C)(ii thru iv).
Paragraph RH-750, Reciprocal Recognition of Licenses is changed
as follows:
Subparagraph (a) is changed in part as follows:
Line 6 changed to read "excess of one hundred eighty (180) days
in any period"
Subparagraph (a)(2) is changed in part as follows:
Line 3 changed to read "___ notification shall indicate the
exact location.
Paragraph RH-902, Schedule C,Exempt Concentrations,
(Continued), is changed to read as follows:
NOTE 2: For purposes of RH-301 where there is involved a
combination of isotopes, the limit for the combination should be derived as
follows:
Determine for each isotope in the product the ratio between the
concentration present in the product and the "exempt concentration establTshed
in Schedule"C"for the specific isotope- when not in combination. The sum of
such ratios may not exceed "1" (i.e. unity). Example:
Concentration of Isotope A in Product + Concentration of
Isotope B in Product Exempt concentration of Isotope A Exempt concentration of
Isotope B Values are given in Column I only for those materials normally used
as gases.
Paragraph RH-903. Schedule
D, Group I will add the following;
(14) Iodine-123 as sodium iodide for measurement of thyroid
uptake.
Paragraph RH-903,Schedule D, Group III
will be corrected as follows:
(3)
(1)
Gluceptate sodium for brain imaging and renal perfusion studies.
Paragraph RH-903, Schedule D, Group
III will add the following:
(3)
(m)
Oxidronate sodium for bone imaging.
(n)
Disofenin for imaging hepatobiliary.
(o) Succimer (DMSA) for renal imaging.
Paragraph RH-903. Schedule D. will add
the following:
Group IV. Prepared
Radiopharmaceuticals for Certain Therapeutic Uses That Do Not Normally Require
Hospitalization for Purposes of Radiation Safety.
(1) Iodine-131 as iodide for treatment of
hyperthyroidism and cardiac dysfunction.
(2) Phosphorus-32 as soluble phosphate for
treatment of polycythemia vera, leukemia, and bone metastases.
(3) Phosphorus-32 as colloidal chromic
phosphate for intracavitary treatment of malignant effusions.
Group V. Prepared
Radiopharmaceuticals for Certain Therapeutic Uses
That Normally Require Hospitalization for Purposes
of Radiation Safety.
(1) Gold-198 as colloid for intracavitary
treatment of malignant effusions.
(2) Iodine-131 as iodide for treatment of
thyroid carcinoma.
Paragraph RH-904, Schedule E is
retitled as follows:
RH-904
Schedule E Limits for
Broad Licenses.
Paragraph RH-1303(c) will add the following:
(6) Each area in which there may exist
radiation levels in excess of 500 rems in one hour at 1 meter from a sealed
radioactive source^ that is used to irradiate materials shall:
(A) Have each entrance or,access point
equipped with entry control devices which shall function automatically to
prevent any individual from inadvertently entering the - area when such
radiation levels exist; permit deliberate entry into the area only after a
control device 1s actuated that shall cause the radiation level within the
area, from the sealed source, to be reduced below that at which It would be
possible for an individual to receive a dose In excess of 100 mrem in one hour;
and prevent operation of the source if the source would produce radiation
levels in the area that could result in a dose to an Individual In excess of
100 mrem in one hour. The entry control devices required by this
paragraph(c)(6) shall be established 1n such a way that no individual will be
prevented from leaving the area.
'Paragraph RH-1303(c)(6) does not apply to radioactive sources
that are used In teletherapy, in radiography, or in completely
self-shielded irradiators in which the source is both stored and operated
within the same shielding radiation barrier and, in the designed configuration
of the Irradiator, is always physically Inaccessible to any individual and
cannot create high levels of radiation in an area that is accessible to any
individual. Paragraph RH-1303(c)(6) also does not apply to sources from which
the radiation is incidental to some other use. Radiation from radioactive
materials that are used in sealed sources in non-self-shielded irradiators
applies to Paragraph RH-1303(c)(6}.
(B) Be equipped with additional controT
devices such that upon failure of the entry control devices to function as
required by Paragraph RH-1303(c)(6)(A) the radiation level within the area,
from the sealed source, shall be reduced below that at which it would be
possible for an individual to receive a dose in excess of TOO mrem in one hour;
and visible and audible alarm signals shall be generated to make an individual
attempting to enter the area aware of the hazard and the licensee or at least
one other individual, who is familiar with the activity and prepared I 'to
render or summon assistance, aware of such failure of the entry control
devices.
(C) Be equipped with
control devices such that upon failure or removal of physical radiation
barriers other than the source's shielded storage container the radiation level
from the source shall be reduced below that at which it would be possible for
an individual to receive a dose in excess of 100 mrem in one hour; and visible
and audible alarm signals shall be generated to make potentially affected
individuals aware of the hazard and the licensee or at least one other
individual, who is familiar with the activity and prepared to render or summon
assistance, aware of the failure or removal of the physical barrier. When the
shield for the stored source is a liquid, means shall be provided to monitor
the integrity of the shield and to signal, automatically, loss of adequate
shielding. , Physical radiation barriers that comprise permanent structural
components, such as walls, that have no credible probability of failure or
removal in ordinary circumstances need not meet the requirements of Paragraph
RH-l!303(c){6)(C).
(D) Be equipped
with devices that will automatically generate visible and audible alarm signals
to alert personnel in the area before the source can be put into operation and
in sufficient time for any individual in the area to operate a clearly
identified control device which shall be installed in the area and which can
prevent the source i from being put into operation.
(E) Be controlled by use of such
administrative procedures and such devices as are necessary to assure that the
area is cleared of personnel prior to each use of the source preceding which
use it might have been possible for an individual to have entered the area.
(F) Be checked by a physical
radiation measurement to assure that prior to the first individual's entry into
the area after any use of the source, the radiation level from the source in
the area is below that at which it would be possible for an individual to
receive a dose in excess of 100 mrem in one hour.
(G) Have entry control devices required in
Paragraph RH-1303 {c)(6)(A) of this section which have been tested for proper
functioning prior to initial operation with such source of radiation on any day
that operations are not uninterruptedly continued from the previous day or
before resuming operations after any unintended interruption, and for which
records are kept of the dates, times, and results of such tests of function. No
operations other than those necessary to place the source in safe condition or
to effect repairs on controls shall be conducted with such Source unless
control devices are functioning properly. The licensee shall submit an
acceptable schedule for more I complete periodic tests of the entry control and
warning systems to be established and adhered to as a condition of the license.
(H) Have those entry and exit
portal^ . that are used in transporting materials to and from the
irradiation,area, and that are not intended for use by individuals, controlled
by such devices and administrative procedures as are necessary to physically
protect and warn against inadvertent entry by any individual through such
portals. Exit portals for processed materials shall be equipped to detect and
signal the presence of loose radiation sources that are carried toward such an
exit and to automatically prevent such loose sources from being carried out of
the area.
(I) Licensees with, or
applicants for, licenses for radiation sources that are within the purview of
Paragraph RH-1303(c)(6), and that must be used in a variety of positions or in
peculiar locations, such as open fields or forests, that make it impracticable
to comply with certain requirements to Paragraph RH-1303(c)(6) of this section,
such as those for the automatic control of radiation levels may apply to the
Department for approval, prior to use of safety measures that are alternative
to those specified in Paragraph RH-1303 (c)(6), and that will provide at least
an equivalent degree of personnel protection in the use of such sources. At
least one of the alternative measures must include an entry-preventing
interlock control based on a physical measurement of radiation that assures the
absence of high radiation levels before an individual can gain access to an
area where such sources are used.
Paragraph RH-1401 is changed to read as follows:
RH-1401.
Method for Obtaining Approval of Proposed Disposal
Procedures,
(a) Any person may
apply to the Department for approval of proposed procedures to dispose of
radioactive material in a manner not otherwise authorized in this Regulation.
Each application shall include a description of the radioactive material,
including the quantities and kinds of radioactive material and the levels of
radioactivity involved and the proposed manner and conditions of disposal. The
application, where appropriate, shall also include an analysis and evaluation
of pertinent information as to the ; nature of the environment, including
topographical, geological, meteorological and hydrological characteristics;
usage of ground and surface waters in the general area; the nature and location
of other potentially affected facilities; and procedures to be observed to
minimize the risk of unexpected or hazardous exposures.
(b) The Department will not approve any
application for a license to receive radioactive material from other persons
for disposal on land not owned by the State or the Federal Government.
Paragraph RH-1402(d) is changed to read as follows:
(d) The gross quantity of licensed
and other radioactive material, excluding Hydrogen-3 and Carbon-14, released
into the sewerage system by the licensee does not
exceed one
curie per year. The quantities of Hydrogen-3 and Carb6n-14 released into the
sanitary sewerage system may not exceed 5 curies per year for Hydrogen-3 and 1
curie per year for Carbon-14.
Paragraph RH-1403 will add the following:
(d) Specific apfiroval has been granted by
the Department.
Paragraph RH-1404 1s changed to read:
RH-1401
Paragraph RH-1405, Disposal of Specific
Wastes, will be added as follows:
RH-1405
Disposalof Specific
Wastes. Any licensee may dispose of the following licensed
material without regard to its radioactivity;
(a) 0.05 microcuries or less of Hydrogen-3 or
Carbon-14, per gram of medium, used for liquid scintillation counting;
and
(b) 0.05 microcuries or less of
Hydrogen-3 or Carbon-14, per gram of animal tissue averaged over the weight of
the entire animal; provided however, tissue may not be disposed of under this
section in a manner that would permit Its use either as food for humans or as
animal feed.
(c) Nothing in this
section, however, relieves the licensee of maintaining records showing the
receipt, transfer and disposal of such byproduct material as specified in
Paragraph RH-600, and
(d) Nothing
in this section relieves the licensee from complying with other applicable
federal, state and local regulations governing any other toxic or hazardous
property of these materials.
Paragraph RH-1602(a) will add the following:
(10)
Information arid Maintenance
Record and Associated Information, The registrant shall maintain
the following information for each X-ray system for inspection by the
Department:
(A) maximum rating of technique
factors;
(B) model and serial
numbers of all certifiable components;
(C) aluminum equivalent filtration of the
useful beam, including any routine variation;
(D) tube rating charts and cooling
curves;
(E) records of surveys,
calibrations, maintenance, and modifications performed on the X-ray system(s)
after July 1, 1983 with the names of persons who performed such
services;
(F) a scale drawing of
the room in which a stationary X-ray system is located with such drawing
indicating the use of areas adjacent to the room and an estimation of the
extent of occupancy by an individual in such areas. In addition, the drawing
shall include:
(i) the results of a survey
for radiation levels present at the operator's position and at pertinent points
outside the room at specified test conditions, or
(ii) the type and thickness of materials, or
lead equivalency, of each protective barrier; and
(G) a copy of all correspondence with the
Department regarding that X-ray system.
Paragraph RH-1603 will add the following:
(i)
Radiation Therapy Sirnulatioh
Systems. Radiation therapy simulation systems shall be exempt from
all the requirements of Paragraph RH-1603(a), (c)(2), and (f) provided that:
(A) such systems are designed and used in
such a manner that no individual other than the patient is in the X-ray room
during periods of time when the system is producing X-rays; and
(B) such systems as do not meet the
requirements of Paragraph RH-1603(f) are provided with a means of indicating
the cumulative time that an individual patient has been exposed to X-rays.
Procedures shall require in such cases that the timer be reset between
examinations.
Paragraph RH-1604(a)(2) is changed to read as follows:
(2) For systems with variable aperture beam
limiting devices, means shall be provided for visually defining the perimeter
of the X-ray field.
(A) The beam-limiting
device shall numerically indicate . the field size in the plane of the image
receptor to which it is adjusted; and
(B) Indication of field size dimensions and
SID's shall be specified in inches and/or centimeters, and shall be such that
aperture adjustments result in X-ray field dimensions in the plane of the image
receptor which correspond to those indicated by the beam-limiting device to
within 2 percent of the SID when the beam axis is indicated to be perpendicular
to the plane of the image receptor.
(C) The X-ray field shall not exceed the
visually defined field such that the total misalignment of the X-ray field
along either the length or width of the visually defined field exceeds 2
percent of the distance from the source to the center of the visually defined
field when the surface upon which it appears is perpendicular to the axis of
the X-ray beam.
Paragraph RH-1607 is changed to read as follows:
RH-1607
Therapeutic X-ray Systems
of Less Than One MeV.
(a)
Equipment Requirements.
(1)
Lea_kage
Radiation. When the tube is operated at its leakage technique
factors, the leakage radiation shall not exceed the value specified at the
distance specified for the classification of the X-ray system.
(A)
Contact Therapy
Systems. Leakage radiation shall not exceed 100 milliroentgens per
hour at 5 centimeters from the surface of the tube housing assembly.
(B)
0-150 kVp
Systems. Systems which are manufactured or . ' installed prior to
the July 1, 1983 date shall have a leakage radiation which does not exceed 1
roentgen in one hour at 1 meter from the source.
(C)
0-150 kVp
Systems. Systems which are manufactured on or after July 1, 1983
shall have a leakage radiation Which does not exceed 100 milliroentgens in one
hour at 1 meter from the source.
(D)
151 to 999 kVp
Systems. The leakage radiation shall not exceed 1 roentgen in one
hour at 1 meter from the source except systems that operate in excess of 500
kVp may have a leakage radiation at 1 meter from the source equivalent to the
exposure within one hour of the useful beam at 1 meter from the source
multiplied by a factor of 0.001.
(2)
Permanent Beam Limiting
Devices. Permanent fixed diaphragms or cones used for limiting the
useful beam shall provide the same or higher degree of protection as required
by the tube housing assembly.
(3)
Removable' and Adjustable Beam Limiting Devices.
(A) Removable beam limiting devices shall,
for the portion of the useful beam to be blocked by these devices, transmit not
more than 1 percent of the original X-ray beam at the maximum kilovoltage and
maximum treatment filter.
(B)
Adjustable beam limiting devices installed after July 1, 1983 shall meet the
requirements of Parag|raph RH-1607 (a)(3)(A).
(C) Adjustable beam limiting devices
installed before July 1, 1983 shall, for the portion of the X-ray beam to be
blocked by these devices, transmit not more than 5 percent of the original
X-ray beam at the maximum kilovoltage and maximum treatment filter.
(4)
Filter
System. The filter system shall be so designed that:
(A) filters can not be accidently displaced
from the useful beam at any possible tube orientation;
(B) each filter is marked as to its material
of construction and its thickness or wedge angle for wedge filters;
and
(C) it shall be possible for
the operator to determine the presence or absence of each filter and the
orientation of each wedge filter in the useful beam when the operator is at the
control panel, either by display at the control panel or by direct observation.
(D) The radiation at 5 centimeters from the filter insertion slot opening does
not exceed 30 roentgens per hour under any operating conditions.
(5)
Tube
Immobilization. The tube housing assembly shall be capable of
being immobilized during stationary treatments.
(6)
Focal Spot
Marking. The tube housing assembly shall be so marked that it is
possible to determine the location of the focal spot to within 5 millimeters,
and such marking shall be readily accessible for use during calibration
procedures.
(7)
Beam
Block. Contact therapy tube housing assemblies shall have a
removable shield of at least 0.5 millimeter lead equivalency at TOO kVp that
can be positioned over the entire useful beam exit port during periods when the
beam is not in use.
(8) Systems of
greater than 150 kVp manufactured after July 1, 1983 shall be provided with a
beam monitor system which:
(A) shall include a
transmission detector which is a full beam detector and which is placed on the
patient side of any fixed added filters other than a wedge filter;
(B) shall have the detector interlocked to
prevent incorrect positioning in the useful beam;
(C) shall not allow irradiation until a
pre-selected value of exposure ("1 .e., roentgens, rads/unit time, etc.) has
been made at the treatment control panel;
(D) shall independently terminate irradiation
when the preselected exposure has been reached;
(E) shall be so designed that, in the event
of a system malfunction or electrical power failure, the dose administered to a
patient prior to the system malfunction or power failure can be accurately
determined;
(F) shall have a
display at the control panel from which the dose at, a reference point in the
treatment volume can be calculated.
(G) shall have a control panel display which
maintains the reading until intentionally reset to zero; and
(H) shall have a control panel display which
does not have scale multiplying factors and utilizes a design such that
increasing dose is displayed by increasing numbers.
(9)
Timer.
(A) A timer shall be provided which has a
display at the treatment control panel. The timer shall be graduated in minutes
and fractions of minutes. The timer shall have a pre-set time selector and an
elapsed time indicator.
(B) The
timer shall be a cumulative timer which activates with the radiation and
retains its reading after irradiation is interrupted or terminated. After
irradiation is terminated and before irradiation can be reinitiated, it shall
be necessary to cycle the pre-set time selector through zero time.
(C) The timer shall terminate irradiation
when a pre-selected time has elapsed.
(D) The timer shall permit accurate
pre-setting and determination of exposure times as short as one
second.
(E) The timer shall not
permit an exposure if set at zero.
(F) The timer shall comply with the
provisions of Paragraph RH-1607(a)(13) where applicable.
(G) The [timer shall not activate until the
shutter is opened when patient irradiation is controlled by a shutter
mechanism.
(10)
Control Panel Functions. The control panel, in
addition to the displays required in other provisions of Paragraph RH-1607,
shall have:
(A) an indication of whether
electrical power is available at the control panel and if activation of the
X-ray tube is possible;
(B) an
indication of whether X-rays are being produced;
(C) means for indicating kV and X-ray tube
current;
(D) the means for
terminating an exposure at any time;
(E) a locking device which will prevent
unauthorized use of the X-ray system; and
(F) for X-ray equipment manufactured after
July 1, 1983, a positive display of specific filter(s) in the beam.
(11)
Multiple
Tubes. When a control panel may energize more than one X-ray tube:
|
(A) it shall be possible to activate only
one X-ray tube during any time interval;
(B) there shall be an indication at the
control panel identifying which X-ray tube is energized; and
(C) there shall be an indication at the tube
housing assembly when that tube is energized.
(12)
Source-to-Patient
Distance. There shall be means of determining the
source-to-patient distance to within 1 centimeter.
(13)
Shutters.
Unless it is possible to bring the X-ray output to the prescribed exposure
parameters within five steconds, the entire useful beam shall be automatically
attenuated by a shutter having a lead equivalency not less than that of the
tube housing assembly. In addition,
(A) after
the unit is at operating parameters, the shutter shall be controlled
electrically by the operator from the control panel; and
(B) an indication of shutter position shall
appear at the control panel.
(14)
Low Filtration X-ray
Tubes. Each X-ray system equipped with a beryllium or other
low-filtration window shall be clearly labelled as such upon the tube housing
assembly and at the control panel.
(b)
Faci'lity Design Requireniehts for Systems Capable of
Operating Above 50 kVp. In addition to shielding adequate to meet
requirements of Section 2 and Section 3, the treatment room shall meet the
following design requirements:
(1)
Warning Lights. Treatment rooms to which access is
possible through more than one entrance shall be provided with warning lights,
in a readily observable position near the outside of all access doors, which
will indicate when the useful beam is "on".
(2)
Voice
Communication. Provision shall be made for two-way aural
communication between the patient and the operator at the control panel;
however, where excessive noise levels make aural communication Impractical,
other methods of communication shall be used.
(3)
Viewing Systems.
Windows, mirrors, or closed-circuit television, or an equivalent system shall
be provided to permit continuous observation of the patient during irradiation
and shall be so located that the operator can observe the patient from the
control panel. When the primary viewing system is by electronic means (e.g.,
television), an alternate viewing system shall be available for use in the
event of electronic failure.
(4)
Additional Requirements. Treatment rooms which contain
an X-ray system capable of operating above 150 kVp shall meet the following
additional requirements:
(A) all necessary
shielding, except for any beam interceptor, shall be provided by fixed
barriers;
(B) the control panel
shall be outside the treatment room;
(C) all doors of the treatment room shall be
electrically connected to the control panel such that X-ray production cannot
occur unless all doors are closed;
(D) when the doors referred to in Paragraph
RH-1607(b)(4)(C) are opened while the X-ray tube is activated:
(i) X-ray production shall terminate within
one second, or
(ii) the radiation
at a distance of 1 meter from the source -shall be reduced to less than|100
milliroentgens per hour within one second; and
(E) after the radiation output of the X-ray
tube has been affected by the opening of any door referred to in Paragraph
RH-1607(b){4)(C), it shall be possible to restore the
X-ray
system to full operation only upon:
(i)
closing the door; and subsequently,
(ii) reinitiating the exposure at the control
panel.
(c)
Surveys, Calibrations, Spot
Checks, arid Operating Procedures.
(1)
Surveys.
(A) All new facilities, and existing
facilities not previously surveyed, shall have a survey made by, or under the
direction of, a qualified expert. Such surveys shall also be done after any
change in the facility or equipment which might cause a significant increase in
radiation hazard.
(B) The expert
shall report his findings In writing to the person in charge of the facility
and a copy of the report shall be maintained by the registrant for inspection
by the Department.
(C) The survey
and report shall indicate all instances where the installation in the opinion
of the qualified expert is in violation of applicable regulations and cite all
items of noncompliance.
(2)
Calibrations,
(A) The calibration of an X-ray system shall
be performed at intervals not to exceed one year and after any change or
replacement of components which could cause a change in the radilation :
output.
(B) The calibration of the
radiation output of the X-ray system shall be performed by or under the
direction of a qualified expert who is physically present at the facility
during such calibration.
(C)
Calibration of the radiation output of an X-ray system shall be performed with
a calibrated instrument. The calibration of such instrument shall be directly
traceable to a national standard. The instrument shall have been calibrated
within the preceding two years.
(D)
The calibrations made pursuant to Paragraph RH-1607{c)(2) shall be such that
the dose at a reference point in soft tissue can be calculated to within *5
percent.
(E) The calibration of the
X-ray system shall include, but not be limited to, the following
determinations:
(i) verification that the
X-ray system is operating in compliance with the design specifications;
(ii) the exposure rates for each
combination of field size, technique factors, filter, and treatment distance
used;
(iii) the degree of
congruence between the radiation field and the field indicated by the
localizing device if such device is present; and
(iv) an evaluation of the uniformity of the
radiation field symmetry for the field sizes used and any dependence upon tube
housing assembly orientation.
(F) Records of calibration performed pursuant
to Paragraph RH-1607(c){2) shall be maintained by the registrant for two years
after completion of the calibration.
(G) A copy of the most recent X-ray system
calibration shall be available for use by the operator at the control
panel,
(3)
Spot Checks. Spot checks shall be performed on X-ray
systems capable of operation at greater than 150 kVp. Such spot checks shall
meet the following requirements:
(A) the spot
check procedures shall be in writing and shall have been developed by a
qualified expert;
(B) the
measurements taken during the spot checks shall demonstrate the degree of
consistency of the operating characteristics which can affect the radiation
output of the X-ray system;
(C)
the spot check procedure shall specify the frequency at which tests or
measurements are to be performed;
(D) the procedure shall also note conditions
which shall require that the system be recalibrated in accordance with
Paragraph RH-1607{c)(2); and
(E)
records of spot check measurements performed pursuant to Paragraph
RH-1607(c){3) shall be maintained by the registrant for two years following
such measurement.
(4)
Operating Procedures.
(A) Therapeutic X-ray systems shall not be
left unattended unless the system is secured pursuant to Paragraph
RH-1607(a)(10)(E).
(B) When a
patient must be held in position for radiation therapy, mechanical supporting
or restraining devices shall be used.
(C) The tube housing assembly shall not be
held by an individual during exposures.
(D) No individual other than the patient
shall be in the treatment room unless such individual is protected by a barrier
sufficient to meet the requirements of Paragraph RH-1200. No individual other
than the patient' shall be in the treatment room during exposures when the kVp
exceeds 150.
(E) The X-ray system
shall not be used in the administration of radiation therapy unless the
requirements of Paragraphs RH-1607(c)C2) and RH-1607(c)(3)(D) have been met.
Paragraph RH-1608 is changed to read:
RH-1608.
X-ray and Electron
Therapy Systems with Energies of One MeV and Above. Section 6
shall apply to medical facilities using therapy systems with energies 1 MeV and
above.
(a)
Deof
efinitions. In addition to the definitions provided in Paragraph
RH-1601, the following definitions shall be applicable to Paragraph RH-1608.
(1) "Applicator" means a structure which
indicates the extent of the treatment field at a given distance from the
virtual source and which may or may not incorporate the beam limiting device.
{2^ "Beam scattering filter" means a filter used in order to scatter a beam of
electrons.
(3) "Central axis of the
beam" means a line passing through the virtual source and the center of the
plane figure formed by the edge of the final beam limiting device.
(4) "Dose monitoring system" means a system
of devices for the detection and display of quantities of radiation.
(5) "Dose monitor unit" means a unit from
which the absorbed dose can be calculated.
(6) "Existing equipment" means therapy
systems subject to Paragraph RH-1600 which were manufactured on or before July
1, 1983.
(7) "Field flattening
filter" means a filter used to homogenize the dose rate over the area of a
useful beam of X-rays.
(8) "Field
size" means the dimensions of an area in a plane perpendicular to the specified
direction of the beam of incident radiation at a specified depth in a phantom
anc| defined by specified isodose lines. (9) "Gantry" means that part of the
system supporting and allowing possible movements of the radiation head.
(10) "Interruption of irradiation"
means the stopping of irradiation with the possibility of continuing
irradiation without resetting of operating conditions at the control
panel.
(11) "Isocenter" means a
fixed point in space located at the intersection of the rotation axes of the
principal movements of the therapy system.
(12) "Moving beam therapy" means radiation
therapy 'with relative displacement of the useful beam and the patient during
irradiation.
(13) "New equipment"
means systems subject to Paragraph RH-1608 which were manufactured after July
1, 1983.
(14) "Normal treatment
distance" means the distance between the virtual source and a reference point
on the central axis of the beam. The reference point is located at a position
where the patient will be placed during radiation therapy.
(15) "Patient" means an individual subjected
to examination and treatment.
(16)
"Phantom" means a volume of material behaving in a manner similar to tissue
with respect to the attenuation and scattering of radiation.
(17) "Primary dose monitoring system" means a
system which will monitor the quantity of radiation produced during irradiation
and which will terminate Irradiation when a pre-selected number of dose monitor
units have been acquired.
(18)
"Radiation treatment prescription" means the absorbed dose which is intended to
be delivered to the treatment volume.
(19) "Radiation head" means the structure
from which the useful beam emerges.
(20) "Redundant dose monitoring combination"
means a combination of two dose monitoring systems in which both systems are
arranged to terminate irradiation in accordance with a pre-selected number of
dose monitor units.
(21) "Secondary
dose monitoring system" means a system which will terminate irradiation in the
event of failure of the primary system.
(22) "Shadow tray" means a device attached to
the radiation head to support auxiliary beam limiting material.
(23) "Stationary beam therapy" means
radiation therapy without relative displacement of the useful beam and the
patient during irradiation.
(24)
"Target" means that part of a radiation source which intercepts a beam of
accelerated particles with subsequent emission of other radiation.
(25) "Termination of irradiation" means the
stopping of irradiation in a fashion which will not permit continuance of
irradiation without the resetting of operating conditions at the control
panel.
(26) "Treatment field" means
the area of the patient's skin which is to be irradiated.
(27) "Virtual source" means a point from
which radiation appears to originate.
(b)
Requirements for
Equipment.
(1)
Leakage Radiation to the Patient Area.
(A) New equipment shall meet the following
requirements:
(i) (For all operating
conditions, the dose inrads due to leakage radiation, including X-rays,
electrons, and neutrons, at any point in a circular plane of 2 meters radiufe
centered on and perpendicular to the central axis of the beam at the normal
treatment distance and outside the maximum useful beam, shall not exceed 0.1
percent of the maximum dose equivalent in rads of the unattenuated useful beam
measured at the point of intersection of the central axis of the beam and the
plane surface.) Measurements shall be averaged over an area up to but not
exceeding 100 square centimeters at the positions specified.
(ii) For each system the registrant shall
determine, or obtain from the manufacturer, the leakage radiation existing at
the positions specified in Paragraph RH-1608 (b)(l)(A)(i) for specified
operating conditions. Records on leakage radiation shall be maintained at the
installation for inspection by the Department.
(B) Existing equipment shall meet the
following requirements:
(i) {The leakage
radiation, excluding neutrons, at any point in the area specified by Paragraph
RH-(b)(l){A)(i) where such area intercepts the central axis of the beam 1 meter
from the virtual source, shall not exceed 0.1 percent of the maximum dose 9f
the unattenuated useful beam measured at the point of intersection of the
central axis of the beam and the surface of the referenced circular plane.)
Measurements shall be averaged over an area up to but not exceeding 100 square
centimeters at the positions specified.
(ii) For each system, the licensee shall
determine, or obtain from the manufacturer, the leakage radiation existing at
the positions specified in Paragraph RH-1607(b)(l){B)(i) for specified
operating conditions. Records on radiation leakage shall be maintained at the
installation for inspection by the Department.
(2)
Leakage Radiation Outside
th_e Patient Area.
(A) . The
dose equivalent in rem due to leakage radiation,except in the area specified in
Paragraph RH-1608(b){l)(A)(i), when measured at any point 1 meter from the path
of the charged -particle, before the charged particle strikes the target or
window, shall not exceed 0.1 percent for X-ray leakage nor 0.5 percent for
neutron leakage of the maximum dose equivalent in rem of the unattenuated
useful beam measured at the point of intersection of the central axis of the
beam and the circular plane specified in Paragraph 1608(b)(1)(A)(i).
(B) The licensee shall determine, or obtain
from the manufacturer, the actual leakage radiation existing at the positions
specified in Paragraph RH-1608;b)(2)(A) for specified operating conditions.
Measurements shall be averaged over an area up to but not exceeding 100 square
centimeters at the positions specified.
(3)
Beam Limiting
Devices. Adjustable or interchangeable beam limiting dev|ices
shall be provided and such devices shall transmit no more than 2 percent of the
useful beam for the portion of the useful beam which is to attenuated by the
beam limiting device. The neutron component of the useful beam shall not be
included in this requirement. Measurements shall be averaged over an area up to
but not exceeding TOO square centimeters at the normal treatment
distance.
(4)
Filters.
(A) If the
absorbed dose rate information required by Paragraph RH-1608(b)(l6) relates
exclusively to operation with a field flattening or beam scattering filter in
place, such filter shall be removable only by the use of tools.
(B) In systems which utilize a system of
wedge filters, interchangeable field flattening filters, or interchangeable
beam scattering filters:
(i) irradiation
shall not be possible until a selection of a filter has been made at the
treatment control panel;
(ii) an
interlock system shall be provided to prevent irradiation if the filter
selected is not in the correct position;
(iii) an indication of the wedge filter
orientation with respect to the treatment field shall be provided at the
control panel, by direct observation or by electronic means, when wedge filters
are used;
(iv) a display shall be
provided at the treatment control panel showing the filter(s) in use;
(v) each filter which is removable from the
system shall be clearly identified as to that filter's material of
construction, thickness, and the wedge angle for wedge filters; and
(vi) an interlock shall be provided to
prevent irradiation if any filter selection operation carried out in the
treatment room does not agree with the filter selection operation carried out
at the treatment control panel.
(5)
Beam Quality.
The registrant shall determine, or obtain from the manufacturer, data
sufficient to assure that the following beam quality requirements are met:
(A) The absorbed dose resulting from X-rays
in a useful electron beam at a point on the central axisof the beam 10
centimeters greater than the practical range of the electrons shall not exceed
the values stated in Table III. Linear interpolation shall be used for values
not stated.
TABLE HI
Maximum Energy of Electron Beam in MeV
|
X-ray Absorbed Dose as a Fraction of Maximum Absorbed
Dose
|
1
|
0.03
|
15
|
0.05
|
35
|
0.10
|
50
|
0.20
|
(B)
Compliance with Paragraph RH-1608(b)(5)(A) shall be determined using:
(i) a measurement within a phantom with the
incident surface of the phantom at the normal treatment distance and normal to
the central axis of the beam;
(ii)
the largest field size available which does not exceed 15 centimeters by 15
centimeters; and
(iii) a phantom
whose cross-sectional dimensions exceed the measurement radiation field by at
least 5 centimeters and whose depth is sufficient to perform the required
measurement.
(C) The
absorbed dose at a surface located at the normal treatment distance, at the
point of intersection of that surface with the central axis of the useful beam
during X-ray irradiation, shall not exceed the limits stated in Table IV.
Linear Interpolation shall be used for values not stated.
TABLE IV
Maximum Photon Energy in MeV
|
Absorbed Dose at the Surface as a Fraction of the
Maximum Absorbed Dose
|
- "1 -
|
0.80
|
2
|
0.70
|
5
|
0.60
|
15
|
0.50
|
35
|
0.40
|
50
|
0.20
|
(D)
Compliance with Paragraph RH-1608(b)(5)(C) shall be determined by:
(i) measurements made within a phantom using
an instrument which will allow extrapolation to the surface absorbed
dose;
(ii) use of a phantom whose
size and placement meet the requirements of Paragraph RH- (b)(5)(B); (iii)
removal of all beam modifying devices which can be removed without the use of
tools, except for beam scattering or beam flattening filters, and
(iv) the largest field size available which
does not exceed 15 centimeters by 15 centimeters.
(E) The licensee shall determine, or obtain
from the manufacturer, the maximum percentage absorbed dose due to stray
neutrons in the useful beam for specified operating conditions.
(6)
Beam
Monitors. All therapy systems shall be provided with radiation
detectors in the radiation head.
(A) New
equipment shall be provided with at least two radiation detectors. The
detectors shall be incorporated into two monitoring systems arranged either as
a primary/ primary combination or as primary/secondary combination.
(B) Existing equipment shall be provided with
at least one radiation detector. This detector shall be incorporated into a
primary system.
(C) The detectors
and system into which the detector is inco^rporated shall meet the following
requirements:
(i) Each primary system shall
have a detector whichis a transmission detector and a full beam detector and
which is placed on the patient side of any fixed added filters other than a
wedge filter.
(ii) The detectors
shall be removable only with tools and shall be interlocked to'prevent
incorrect positioning.
(iii) Each
detector shall be capable of independently monitoring and controlling the
useful beam.
(iv) Each detector
shall form part of a dose monitoring system from whose readings in dose monitor
units the absorbed dose at a reference point in the treatment volume can be
calculated.
(v) For new equipment
the design of the dose monitoring systems of Paragraph RH-l608(b)(6)(C)(iv)
shall assure that the malfunctioning of one system shall not affect the correct
functioning of the second system. In addition:
(a) The failure of any element which may be
common to both systems shall terminate the useful beam.
(b) The failure of any element common to both
systems which could affect the correct function of both systems shall terminate
irradiation.
(vi) Each
dose monitoring system shall have a legible display at the treatment control
panel. Each display shall:
(a) maintain a
reading until intentionally reset to zero;
(b) have only one scale and no scale
multiplying factors in new equipment; and
(c) utilize a design such that increasing
dose is displayed by increasing numbers and shall be so designed that, in the
event of an overdosage of radiation, the absorbed dose may be accurately
determined under all normal conditions of use or foreseeable
failures.
(vii) In the
event of power failure, the dose monitoring information required in Paragraph
RH-1608(b){6)(C){vi) displayed at the control panel at the time of failure
shall be retrievable in at least one system.
(7)
Beam Symmetry.
(A) For new equipment, each therapy machine
shall have the capability of comparing the dose rates in each of the four
quadrants of the central 80 percent of the useful beam. Beam symmetry
information shall be displayed at ( the treatment control panel, and such
display shall be capable of indicating a differential of more than _ 5 percent
between any two of the quandrant dose rates. Beam asymmetry in excess of 20
percent shall automatically terminate the useful beam.
(B) Beam symmetry requirements of Paragraph
RH-^608 (a)(7)(A)shall _be met .if. the user can demonstrate to the
satisfaction of the Department that adequate fail-safe protection against the
beam asymmetry is incorporated into theinherent design of the
accelerator.
(C) On existing
equipment where the Department has determined that beam syrmetry is
inadequate^, the use of an automatic beam asymmetry warning system may be
required.
(8)
Selection and Display of Dose Monitor Units.
(A) Irradiation shall not be possible until a
selection of a number of dose monitor units has been made at the treatment
control panel.
(B) After useful
beam termination, it shall be necessary to manually reset the pre-selected dose
monitor units before treatment can be reinitiated.
(C) The pre-selected number of dose monitor
units shall be displayed at the treatment control panel until reset manually
for the next irradiation.
(9)
Termination of Irradiation by
the DoseMonitorihg System.
(A)
Each of the required monitoring systems shall be capable of independently
terminating irradiation. Provisions shall be made to test the correct operation
of each system.
(B) Each primary
system shall terminate irradiation when the pre-selected number of dose monitor
units has been detected by the system,
(C) Each secondary system shall terminate
irradi-ation when 102 percent of the pre-selected number of dose monitor units
has been detected by the system,
(D) For new equipment, indicators on the
control panel shall show which monitoring system has terminated the
beam.
(10)
Interruption Switches, It shall be possible to
interrupt irradiation and equipment movements at any time from the operator's
position at the treatment control panel. Following an interruption, it shall be
possible to restart irradiation by operator action without any reselection of
operating conditions. If any change is made of a pre-selected value during an
interruption the equipment shall go to termination condition.
(11)
Termination
Switches. It shall be possible to terminate irradiation and
equipment movements, or go from an interruption condition to termination
conditions, at any time from the operator's position at the treatment control
panel.
(12)
Timer.
(A) A timer
shall be provided which has a display at the treatment control panel. The timer
shall be graduated in minutes and decimals of minutes. The timer shall have ; a
pre-set time selector and an elapsed time indicator.
(B) 'The timer shall be a cumulative timer
which switches on and off with the radiation and retains its reading after
irradiation is interrupted or terminated. It shall be necessary to zero and
subsequently reset the elapsed time indicator and the pre-set time selector
after irradiation is terminated before irradiation shall again be
possible.
(C) The timer shall
terminate irradiation when a pre-selected time has elapsed if the dose
monitoring systems fail to do so.
(13)
Selection of
Radiation Type. Equipment capable of both X-ray therapy and electron therapy
shall meet the following requirements:
(A)
Irradiation shall not be possible until a selection of radiation type has been
made at the treatment control panel.
(B) An interlock system shall be provided to
insure that the equipment can emit only the radiation type which has been
selected.
(C) An interlock system
shall be provided to prevent irradiation if any selected operations carried out
in the treatment room do not agree with the selected operations carried out at
the treatment control panel.
(D) An
interlock system shall be provided to prevent irradiation with X-rays when
electron applicators are fitted and irradiation with electrons when accessories
specific for X-ray therapy are fitted. (E) The radiation type selected shall be
displayed at the treatment control panel before and during irradiation.
(14)
Selection of Energy. Equipment capable of generating
radiation beams of different energies shall meet the following requirements:
(A) Irradiation shall not be possible until a
s'election of energy has been made at the treatment control panel.
(B) An interlock system shall be provided to
insure that the equipment can emit only the energy, of radiation which has been
selected.
(C) An interlock system
shall be provided to prevent irradiation if any selected operations carried out
in the treatment room do not agree with the selected operations carried out at
the treatment control panel.
(D)
The energy selected shall be displayed at the treatment control panel before
and during irradiation.
(15)
Selection of Stationary Beam
Therapy or Moving Beam Therapy. Equipment capable of both
stationary beam therapy and moving beam therapy shall meet the following
requirements:
(A) Irradiation shall not be
possible until a selection of stationary beam therapy or moving beam therapy
has been made at the treatment control panel,
(B) An interlock system shall be provided to
insure that the equipment can operate only in the mode which has been
selected.
(C) . An interlock system
shall be provided to prevent irradiation if any selected operations carried out
in the treatment room do not agree with the selected operations carried out at
the treatment control panel.
(D)
An interlock system shall be provided to terminate irradiation if the movement
stops during moving beam therapy.
(E) Moving beam therapy shall be so
controlled that the required relationship between the-number of dose monitor
units and movement is obtained.
(F)
The mode of operation shall be displayed at the treatment control
panel.
(16)
Absorbed Dose t^ate. For new equipment, a system shall
be provided from whose readings the absorbed dose rate at a reference point in
the treatment volume can be calculated._/ In addition:
(A) The quotient of the number of dose
monitor units by time i shall be displayed at the treatment control
panel.
(B) If the equipment can
deliver under any conditions an absorbed dose rate at the normal treatment
distance more than twice the maximum value specified by the manufacturer's
anticipated dose rate for any machine parameters utilized, a device shall be
provided which termiaa:tes irradiation when the absorbed dose rate exceeds a
value twice the 3 specified maximum. The value at which the irradiation will be
terminated shall be a record maintained by the registrant.
The radiation detectors specified in Paragraph RH-1608;b)(6)
may form part of this system.
(17) .
Location of Focal Spot and
Beani Orientation. The registrant shall determine, or obtain from
the manufacturer, the location with reference to an accessible point on the
radiation head of;
(A) The X-ray target or the
virtual source of X-rays.
(B) The
electron window or the scattering foil.
(C) All possible orientations of the useful
beam.
(18)
System Checking Facilities. Capabilities shall be
provided so that all radiation safety interlocks can be checked. When
pre-selection of any of the operating conditions requires action in the
treatment room and at the treatment control panel, selection at one location
shall not give a display at the other location until the requisite selected
operations in both locations have been completed.
(19) Shadow trays shall be designed such that
the skin entrance dose due to electrons produced within the shadow tray are
minimized.
(c)
Facility and Shielding Requirements. In addition to
Section 3, the following design requirements shall apply:
(1) Except for entrance doors or beam
interceptors, all the required barriers shall be fixed barriers.
(2) The treatment control panel shall be
located outside the treatment room.
(3) Windows, mirrors, close-circuit
television, or other equivalent viewing systems shall be provided to permit
continuous observation of the patient during irradiation and shall be so
located that the operator may observe the patient from the treatment control
panel. When the viewing system is by electronic means (e.g., television), an
alternate viewing system shall be provided for use in the event of failure of
the primary system.
(4) Provision
shall be made for two-way aural communication between ; the patient and the
operator at the treatment control panel.
However, where excessive noise levels makes aural communication
impractical, other methods of communication shall be used.
(5) Treatment rooms to which access is
possible through more than one entrance shall be provided with warning lights,
which will indicate when the useful beam 1s "on" in a readily observable
position near the outside of all-access doors.
(6) Interlocks shall be provided such that
all entrance doors shall be closed before treatment can be initiated or
continued.
If the radiation beam is interrupted by any door opening, it
shall be possible to restore the machine to operation only by closing the door
and reinitiating exposure by manual action at the control panel.
(d)
Surveys, Calibrations, Spot Checks, and Operating
Procedures.
(1) Survey.
(A) All new facilities, and existing
facilities not previously surveyed, shall have a survey made by, or under the
direction of, a qualified expert. Such surveys shall also be done after any
change in the facility or equipment which might cause a significant increase in
radiation hazard.
(B) The
registrant shall obtain a written report of the survey from qualified expert
and a copy of the report shall be transmitted by the registrant to the
Department.
(C) The survey and
report shall indicate all instances where the installation, in the opinion of
the qualified expert, is in violation of applicable regulations and shall cite
the section violated.
(2)
Calibrations.
(A)
The calibration of systems subject to Paragraph RH-1607 shall be performed
before the system is first used for irradiation of patient and thereafter at
time intervals which do not exceed six months and after any change which might
significantly alter the calibration, spatial distribution, or
other-.characteristics of the therapy beam.
(B) The calibration shall be performed under
the direct supervision of a qualified expert.
(C) Calibration of the dose equivalent of the
therapy beam shall be performed with a measurement instrument the calibration
of which is directly traceable to national standards of exposure or absorbed
dose and which shall have been calibrated within the preceding two
years.
(D) Calibrations made
pursuant to Paragraph RH-1608(a)(2) shall be such that the dose at a reference
point in soft tissue can be calculated within +5 percent.
(E) The calibration of the therapy beam shall
include but not be limited to the following determinations:
(i) Verification that the equipment is
operating incompliance with the design specifications concerning the light
localizer, the side light and back-pointer alignmentjwith the isocenter, when
applicable, variation in the axis of rotation for the table, gantry and jaw
system, and beam flatness and symmetry at specified depths.
(ii) The exposure rate or dose rate in air
and/or at various depths of water for the range of field sizes used, for each
effective energy, and for-each treatment -distance used for radiation
therapy.
(iii) The congruence
between the radiation field and the field indicated by the localizing
device.
(iv) The uniformity of the
radiation field and its dependency upon the direction of the useful
beam.
(v) The calibration
determinations above shall be provided in sufficient detail such that the
absorbed dose to tissue in the useful beam may be calculated to within +5
percent.
(F) Records of
the calibration performed pursuant to Paragraph RH- 'd)(2)(A) shall be
maintained by the registrant for two years after completion of the
calibration.
(G) A copy of the
latest calibration performed pursuant to Paragraph RH-1608{d)(2)(A) shall be
available for use by the operator at the treatment control
panel.
(3)
Spot checks. Spot checks shall be performed on systems
subject to Paragraph RH-1608. Such spot checks shall meet the following
requirements:
(A) The spot check procedures
shall be in writing and shall have been developed by a qualified
expert.
(B) The measurements taken
during spot checks shall demonstrate the degree of consistency of the operating
characteristics which can affect the radiation output of the system or the
radiation- delivered to a patient during a therapy procedure.
(C) The spot check procedures shall specify
the frequency at which tests or measurements are to be performed.
(D) For systems in which beam quality can
vary significantly, spot checks shall include quality checks.
(E) Where a system has built-in devices which
provide a self-check of any parameter during irradiation, the spot check
procedures shall require that the parameter be independently verified at
specific time intervals,
(F) The
reasons for spot checks which are erratic or inconsistent with calibration data
shall be promptly investigated and corrected before the system is used for
patient irradiation.
(G) Whenever a
spot check indicates a significant change, as specified in the qualified
expert's spot check procedures, in the operating characteristics of a system,
the system shall be recalibrated as required in Paragraph
RH-1608(d)(2).
(H) Records of
spot-check measurements performed pursuant to Paragraph'RH-1608{d)(3) shall be
maintained by the registrant for a period of two years.
(4)
Operating
Procedures.
(A) No individual
other than the patient shall be in the treatment room during treatment of a
patient.
(B) If a patient must be
held in position during treatment, mechanical supporting or restraining devices
shall be used.
(C) The system shall
not be used in the administration of radiation therapy unless Paragraph
RH-1608(d)(l), (2), and (3) have been met.
Paragraph RH-1701 will add the following:
(c)
Radiation
Surveys.
(1) The maximum
radiation level at a distance of 1 meter from the patient in whom brachytherapy
sources have been inserted shall be determined by measurement or calculation.
This radiation level shall be documented and maintained for inspection by the
Department,
(2) The radiation
levels in the patient's room and the surrounding area shall be determined,
recorded, and maintained for inspection by the Department.
(d)
Signs arid
Records.
(1) In addition to the
requirements outlined in Paragraph RH-1303, the bed, cubicle, or room of the
hospital brachytherapy patient shall be marked with a sign indicating the
presence of brachytherapy sources. This sign shall incorporate the radiation
symbol and specify the radionuclide, the activity, date, and the individual(s)
to contact for radiation safety instructions. The sign is not required provided
the exception in Paragraph RH-1304 is met.
(2) The following information shall be
documented and maintained for review by the Department:
(A) the radionuclide administered, number of
sources, activity in millicuries and time and date of administration;
(B) the exposure rate at 1 meter, the time
the^determination I was made, and by whom;
(C) the radiation symbol; and
(D) the precautionary instructions necessary
to assure that the exposure of individuals does not exceed that permitted under
Paragraph RH-1200.
Paragraph RH-1702(a)(10) Is deleted. This
requirement will be incorporated as RH-1702(c).
Paragraph RH-1702(c) is changed to read as follows:
RH-1702. (c) Testing for Leakage and
Contamination, Teletherapy sources shall be tested for leakage and
contamination in accordance with the procedures described in Paragraph
RH-T701(b) except that the leak . tests shall be capable of detecting 0.05
microcuries of removable contamination, and a source shall be considered to be
leaking if the test reveals the presence of 0.05 microcuries or more of
removable contaminatlon Tests_of.,leakage may be made by wiping accessible
surfaces of the housing port or collimator while the source is in the "off"
position and measuring these wipes for transferred contamination.
Paragraph RH-1702(d) 1s changed to read as follows:
RH-1702. (d) Operation. No individual
shall be in the treatment room during irradiation unless that individual is the
patient. Mechanical restraining or supporting devices shall
be used for positioning the patient, if necessary.
Subparagraphs (e) through (t) will be added to RH-1702 as
follows:
RH-1702.
(e)
Requirement to perform full calibration itieasureniehts of
teletherapy units.
(1) Any
licensee authorized under Paragraph RH-405(d) to use teletherapy units for
treating humans shall cause full calibration measurements to be performed on
each teletherapy unit:
(A) Prior to" the
firsfus^e of' the unit fbV'treatingTumans;
(B) Prior to treating humans:
(i) Whenever spot-check measurements indicate
that the output value differs by more than 5 percent from the value obtained at
the last full calibration corrected mathematically for physical
decay;
(ii) Following replacement
of the radiation source or following reinstallation of the teletherapy unit in
a new location;
(iii) Following any
repair of the teletherapy unit that includes removal of the source or major
repair of the components associated with the source exposure
assembly.
(C) At
intervals not exceeding one year.
(2) Full calibration measurements required by
paragraph RH-1702(c)(l) of this section shall include determination of:
(A) The exposure rate or dose rate to an
accuracy within- 3 percent for the range of field sizes and. for the range of
distances (or for the axis distance) used in radiation therapy:
(B) The congruence between the radiation
field and the field indicated by the light beam localizing device;
(C) The uniformity of the radiation field and
its dependence upon the orientation of the useful beam;
(D) Timer accuracy; and
(E) Theaccuracy of all distance "menas" used
for treating humans.
(3)
Full calibration measurements shall be made in accordance with the procedures
recommended by the Scientific Committee on Radiation Dosimetry of the American
Association of Physicists in Medicine (Physics in Medicine and Biology, Vol.
16, No. 3, 1971, pp. 379-396).
(4)
The exposure rate or dose rate values determined in Paragraph RH-1702(e)(2)(A)
shall be corrected mathematically for physical decay for intervals not
exceeding one month.
(5) Full
calibration measurements required by Paragraph RH-1702(e)(l) of this section
and physical decay corrections required by Paragraph RH-1702(e)(4) shall be
performed by an expert qualified by training and experience in accordance with
Paragraph RH-1702(h).
(f)
Requirement to perform
periodic spot-check measurements of tele therapy units.
(1) Any licensee authorized under Paragraph
RH-405(d) to use teletherapy units for treating humans shall cause spot-check
measurements to be performed on each teletherapy unit at ' intervals not
exceeding one month.
(2)
Spot-check measurements required by Paragraph RH-1702(e)(l) shall include
determination of:
(A) Timer
accuracy;
(B) The congruence
between the radiation field and the field indicated by the light beam
localizing device;
The "distance measuring " device streating humans;
(D) The exposure rate, dose rate,
or a quantity related in a known manner to these rates for one typical set of
operating conditions; and
(E) The
difference between the measurement made in Paragraph RH-1702(f)(2)(D) and the
anticipated output, expressed as a percentage of the anticipated output (i.e.,
the value obtained at last full calibration corrected mathematically for
physical decay).
(3)
Spot-check measurements required by Paragraph RH-1702(f)(1) shall be performed
in accordance with procedures established by an expert qualified by training
and experience in accordance with Paragraph RH-1702(h). (A qualified expert
need not actually perform the spot-check measurements.) If a qualified expert
does not perform the spot-check measurements, the results of the spot-check
measurements shall be reviewed by a qualified expert within 15 days.
(g)
Reqiiireitieht to
calibrate instruitiehts used for full calibration and sp6t-ch6ck
measurements. !
(1) Full
calibration measurements required by Paragraph RH-1702(e) shall be performed
using a dosimetry system that has been calibrated by the National Bureau of
Standards or by a Regional Calibration Laboratory accredited by the American
Association of Physicists in Medicine. The dosimetry system shall have been
Calibrated within the previous"two^"years~and~after any - -servicing that may
have affected system calibration.
(2) Spot-check measurements required by
Paragraph RH-1702(f) shall be performed using a dosimetry system that has been
calibrated in accordance with Paragraph RH-1762(g)(l). Alternatively, a
dosimetry system used solely for spot-check measurements may be calibrated by
direct intercomparison with a system that has been calibrated in accordance
with Paragraph RH-1702(g)(l). This alternative calibration method shall have
been performed within the previous one year and after each servicing that may
have affected system calibration. Dosimetry systems calibrated by this
alternative method shall not be used for full calibration
measurements.
(h)
Qualified expert. The licensee shall determine if a
person is an expert qualified by training and experience to calibrate a
teletherapy unit and establish procedures for (and review the results of)
spot-check measurements. The licensee shall determine that the qualified
expert:
(1) Is certified by the American
Board of Radiology In Therapeutic Radiological Physics, Radiological Physics,
Roentgen-Ray and Gamma-Ray Physics, or X-ray and Radium Physics; or
(2) Has the following minimum training and
experience:
(A) A Master's degree or Doctorate
in physics, biophysics, radiological physics or health physics;
(B) One year of full-time training in
therapeutic radiological physics; and
(C) One year of full-time experience in a
radiotherapy facility including personal calibration and spot-check of at least
one teletherapy unit.
Licensees that have their teletherapy units calibrated by
persons who do not meet these criteria for minimum training and experience may
request a license amendment excepting them from the requirements of Paragraph
RH-1702(h). The request, should include the name of the proposed qualified
expert, a description of the individual's training and experience including
information similar to that specified in Paragraph RH-1702(h)(2), reports of at
least one calibration and spot-check program based on measurements personally
made by the proposed expert within the last 10 years, and written endorsement
of the technical qualifications of the proposed expert from personal knowledge
by a physicist certified by the American Board of Radiology in one of the
specialities listed in Paragraph RH-1702{h){l). The individual's qualifications
will be evaluated by the Department.
(i)
Records. The
licensee shall maintain, for inspection by the Department, records of the
measurements, tests, corrective actions, and instrument calibrations made under
the provisions of Paragraph RH-1702 (e) through (g), and records of the
licensee's evaluation of the qualified expert's training and experience made
under Paragraph RH-1702(h).
(1) Records of:
(A) full calibration measurements under
Paragraph RH-J702(e) and;
(B)
calibration of the instruments used to make these measurements under Paragraph
RH-1702(g)i, shall be preserved for five years after completion of the full
calibration.
(2) Records
of:
(A) spot-check measurements and
corrective actions under Paragraph RH-1702 and;
(B) calibration of instruments used to make
spot-check measurements under Paragraph RH-1702(g) shall be preserved for two
years after completion of the spot-check measurements and corrective
actions.
(3) Records of
the licensee's evaluation of the qualified expert's training and experience
under Paragraph RH-1702(h) shall be preserved for five years after the
qualified expert's last performance of a full calibration on the licensee's
teletherapy unit.
Paragraph RH-1800(c) will add the following:
NOTE: Changes will be incorporated such that the definitions
will be in alphabetical order.
(25) "Radiography" means the examination of
the structure of materials by nondestructive methods, utilizing sealed sources
of radioactive materials.
(26)
"Sealed source" means any radioactive material that is encased in a capsule
designed to prevent leakage or escape of the radioactive material.
(27) "Source changer" means a device designed
and used for replacement of sealed sources in radiographic exposure devices,
including those also used for transporting and storage of sealed
sources.
(28) "Permanent
radiographic installation" means a shielded installation or structure designed
or intended for radiography in which radiography is regularly performed.
Paragraph RH-1801(h) and (i) are changed as follows;
(h)
Inspection arid Maln.teharice of Radidgraphic Exposure Devices And
Storage Containers.
(1) The
licensee shall check for obvious defects in radiographic exposure devices,
storage containers, and source changers prior to use each day the equipment is
used.
(2) Each licensee or
registrant shall conduct a program of quarterly inspection and maintenance of
radiographic exposure devices and. storage containers, and source changers, to
assure proper functioning of components important to safety. Records of
inspection and main|tenance shall be maintained for inspection by the
Department for at least two years from the date of inspection and maintenance.
All important parts shall be maintained in accordance with the manufacturer's
specifications.
(3) If any
inspection conducted pursuant to Paragraph RH-1801 (h)(l) or (2) reveals damage
to components critical to radiation safety, the device shall be removed from
service until repairs have been made.
(i)
Permanent Radiographic
Installations.
(1) Permanent
radiographic installations having high radiation area entrance controls of the
types described in Paragraph RH-1303 (c)(2)(B), (2)(C) or (4) shall also meet
the following special requirements:
(A) Each
entrance that is used for personnel access to thehigh radiation area in a
permanent radiographic installation to which this section applies shall have
both visible and audible warning signals to warn of the presence of
I radiation. The visible signal shall be activated:by
radiation whenever the source is exposed. The audible signal shall be actuated
when an attempt is made to enter the installation while the source is
exposed.
(B) The alarm system shall
be tested monthly while in use or at the be^nn~ing of^each period of use.
"Records tests shall be maintained for inspection by the Department.
Paragraph RH-1802(a){1) will add the fonowing;
(D) Has demonstrated understanding of the
instructions in Paragraph RH-1802(a) by successful completion of a written test
and a field examination on the subjects covered.
Paragraph RH-1802(a)(2) will add the
following:
(C) Has
demonstrated understanding of the instructions.
Paragraph RH-1802(b) by successfully completing a written or
oral test and a field examination on the subjects covered.
Paragraph RH-1802(b) will add the following:
(11) Steps that must be taken immediately by radiography
personnel in the event a pocket dosimeter is found to be off-scale.
Paragraph RH-1802(c)(2) will be changed to read as
follows:
(2)
Pocket dosimeters shall be read and exposures recorded daily.
Paragraph RH-18a2(c) will add the following:
(3) Pocket dosimeters shall be checked at
periods not to exceed one year for correct response to radiation. Acceptable
dosimeters shall read within plus or minus 30 percent of the true radiation
exposure.
(4) If an individual's
pocket dosimeter Is discharged beyond its range, his film badge or
thermoluminescent dosimeter shall be immediately sent for processing.
(5) Reports received from the film badge or
thermoluminescent dosimeter processor shall be maintained for inspection by the
Department until it authorizes their disposal. Records of daily pocket
dosimeter readings shall be kept for two years.
Paragraph RH-1803(d) will change as
follows:
(d)
Supervision'-pf Radiographers' Assistants, Whenever a
radiographer's assistant uses radiographic exposure devices/uses sealed sources
or related source handling tools, or conducts radiation surveys required by
Paragraph RH-1803(c)(2) to determine that the sealed source has returned to the
shielded position after an exposure, he shall be under the personal supervision
of a radiographer.H include:
(1) the
radiographer's personal presence at the site where the sealed sources are being
used,
(2) the ability of the
radiographer to give immediate ,assistance if required, and
(3) the radiographer's watching the
assistant's performance of the operations referred to in this section.
Paragraph RH-1803(e) will add the following title to the
existing contents:
(e)
Records Required at Temporary
Job Sites.
Paragraph RH-1803(f) will add the following title to the
existing contents:
(f)
Special Requirement and Exemptions for Enclosed
Radiography.
Paragraph RH-1803 (e)(2)(B) changed to read:
A cabinet radiography unit shall not be operated until a
physical radiation survey of the unit and areas adjacent to the unit has been
performed. The licensee or registrant shall perform survey with a properly
calibrated instrument as described in Paragraph RH-1801(e) to determine
conformance with Paragraph RH-1203.