Current through Register 1531, September 27, 2024
(A) For each individual who is likely to
receive, in a year, an occupational dose requiring monitoring pursuant to
105
CMR 120.226, the licensee or registrant
shall:
(1) Determine the occupational
radiation dose received during the current year; and
(2) Attempt to obtain the records of
cumulative occupational radiation dose.
(B) Prior to permitting an individual to
participate in a planned special exposure, the licensee or registrant shall
determine:
(1) The internal and external doses
from all previous planned special exposures;
(2) All doses in excess of the limits,
including doses received during accidents; and emergencies, received during the
lifetime of the individual.
(C) In complying with the requirements of 105
CMR 120.265(A), a licensee or registrant may:
(1) Accept, as a record of the occupational
dose that the individual received during the current year, a written signed
statement from the individual, or from the individual's most recent employer
for work involving radiation exposure, that discloses the nature and the amount
of any occupational dose that the individual received during the current
year;
(2) Accept, as the record of
cumulative radiation dose, an up-to-date Agency Form MRCP 120.200-2 or
equivalent, signed by the individual and countersigned by an appropriate
official of the most recent employer for work involving radiation exposure, or
the individual's current employer, if the individual is not employed by the
licensee or registrant; and
(3)
Obtain reports of the individual's dose equivalent(s) from the most recent
employer for work involving radiation exposure, or the individual's current
employer, if the individual is not employed by the licensee or registrant, by
telephone, telegram, facsimile, other electronic media or letter. The licensee
or registrant shall request a written verification of the dose data if the
authenticity of the transmitted report cannot be established.
(D) The licensee or registrant
shall record the exposure history, as required by 105 CMR 120.265(A), on Agency
Form MRCP 120.200-2, or other clear and legible record, of all the information
required on that form.
(1) The form or record
shall show each period in which the individual received occupational exposure
to radiation or radioactive material and shall be signed by the individual who
received the exposure. For each period for which the licensee or registrant
obtains reports, the licensee or registrant shall use the dose shown in the
report in preparing Agency Form MRCP 120.200-2 or equivalent. For any period in
which the licensee or registrant does not obtain a report, the licensee or
registrant shall place a notation on Agency Form Y or equivalent indicating the
periods of time for which data are not available.
(2) For the purposes of complying with this
requirement, licensees or registrants are not required to partition historical
dose between external dose equivalent(s) and internal committed dose
equivalent(s). Further, occupational exposure histories obtained and recorded
on Agency Form MRCP 120.200-2 or equivalent before October 6, 2006, would not
have included effective dose equivalent, but may be used in the absence of
specific information on the intake of radionuclides by the
individual.
(E) If the
licensee or registrant is unable to obtain a complete record of an individual's
current and previously accumulated occupational dose, the licensee or
registrant shall assume:
(1) In establishing
administrative controls pursuant to
105 CMR
120.211(F) for the current
year, that the allowable dose limit for the individual is reduced by 12.5
millisievert (1.25 rem) for each quarter for which records were unavailable and
the individual was engaged in activities that could have resulted in
occupational radiation exposure; and
(2) That the individual is not available for
planned special exposures.
(F) The licensee or registrant shall retain
the records on Agency Form MRCP 120.200-2 or equivalent until the Agency
terminates each pertinent license or registration requiring this record. The
licensee or registrant shall retain records used in preparing Agency Form MRCP
120.200-2 or equivalent for three years after the record is made.
(G) Upon termination of the license or
registration, the licensee or registrant shall permanently store records on
Agency Form MRCP 120.200-2 or equivalent, or shall make provision with the
Agency for transfer to the Agency.
