Current through Reg. 50, No. 187; September 24, 2024
(1) A licensee in possession of a sealed
source shall assure that:
(a) The sealed
source is tested for leakage before its first use unless the licensee has a
certificate from the supplier indicating that the sealed source was tested
semiannually before transfer to the licensee;
(b) The sealed source is tested for leakage
at least semiannually or at intervals approved by the department;
(c) Leak tests are capable of detecting 0.005
microcurie (185 Bg) of radioactive material on the test sample, or, in the case
of radium, the escape of radon of 0.001 microcurie (37 Bg) each 24
hours;
(d) Test samples are taken
from the sealed source or from the surfaces of the device in which the sealed
source is mounted or stored on which radioactive contamination might be
expected to accumulate; and,
(e)
Device test samples are taken when the sealed source is in the off or shielded
position.
(f) Leak tests are
analyzed by individuals who are licensed by the department, U.S. Nuclear
Regulatory Commission, an agreement state or a licensing state to perform leak
test services.
(2) A
licensee shall retain leak test records for 3 years. The records shall contain
the manufacturer's name, the model and serial numbers of each sealed source
tested, the identity of each sealed source radionuclide and its estimated
activity, the measured activity of each test sample expressed in microcuries
(becquerels), the date of the test, and the signature of the radiation safety
officer or designee.
(3) If the
leak test reveals the presence of 0.005 microcurie (185 Bq) or more of
removable contamination, the licensee shall:
(a) Immediately withdraw the sealed source
from use and cause it to be decontaminated and repaired or to be disposed of in
accordance with these regulations; and,
(b) File a report with the department within
5 days of receiving the leak test results describing the equipment involved,
the test results, and the action taken.
(4) A leak test is not required on the
following sealed sources:
(a) Sealed sources
containing only radioactive material with a half-life of less than 30
days;
(b) Sealed sources containing
only radioactive material as a gas;
(c) Sealed sources containing 100 microcuries
(3.7 MBq) or less of beta or photo-emitting material or 10 microcuries (370
kBq) or less of alpha-emitting material; and,
(d) Sealed sources that are listed on a
department license for storage only. The licensee shall test each such sealed
source for leakage before any use or transfer unless it has been tested for
leakage within 6 months before the date of use or transfer.
(5) The department is authorized to approve
leak test frequencies other than semiannually. Criteria used to determine these
frequencies include:
(a) The isotope and
activity;
(b) The requested
usage;
(c) The environmental
hazards to which the sealed sources may potentially be exposed;
(d) The manufacturer's recommended frequency;
and,
(e) Specific information on
the sealed source or device provided by the U.S. Nuclear Regulatory Commission,
an agreement state or a licensing state, including:
1. Sealed Source and Device Registry sheets,
2. Naturally Occurring or
Accelerator Produced Radioactive Materials Sealed Source and Device Registry
sheets.
Rulemaking Authority 404.051, 404.061, 404.071, 404.081 FS.
Law Implemented 404.022,
404.051(1), (4), (6), (9),
(10),
404.061(2),
(3),
404.071(1),
404.081(1)
FS.
New 5-12-93, Formerly
10D-91.1404.
