§ 175.21 Determination and Records of Prior Occupational Dose.
RCNY § 175.21
(a)For each individual who is likely to receive, within 1 year, an occupational dose requiring monitoring pursuant to 24 RCNY Health Code § 175.17, the registrant must: (1) determine the occupational radiation dose received during the current year; and (2) request in writing the records of cumulative occupational radiation dose.
(b)In complying with the requirements of this section, a 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; and (2) accept, as the record of cumulative radiation dose, an up-to-date Department form 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 registrant; and (3) obtain reports of the individual's dose equivalent from the most recent employer for work involving radiation exposure, or the individual's current employer, if the individual is not employed by the registrant, by telephone, telegram, facsimile, other electronic media or letter. The registrant must request a written verification of the dose data if the authenticity of the transmitted report cannot be established.
(c)The registrant must record the exposure history, with all the following required information: (1) the form or record must show each period in which the individual received occupational exposure to radiation or radioactive material and must be signed by the individual who received the exposure. For each period for which the registrant obtains reports, the registrant must use the dose shown in the report. For any period in which the registrant does not obtain a report, the registrant must place a notation in the record or equivalent indicating the periods of time for which data are not available.
(2)for the purposes of complying with this requirement, registrants are not required to partition historical dose between external dose equivalent and internal committed dose equivalent. Occupational exposure histories that do not include effective dose equivalent may be used in the absence of specific information on the intake of radionuclides by the individual.
(d)If the registrant is unable to obtain a complete record of an individual's current and previously accumulated occupational dose, the registrant shall assume: (1) in establishing administrative controls 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.
(e)The registrant must retain the records required by this section until the Department terminates each pertinent registration requiring this record. This includes records required under the standards for protection against radiation in effect prior to January 1, 1994.
(f)Upon termination of the registration, the registrant must permanently store such records, or must make provision with the Department for transfer of such records to the Department. (Added City Record 4/24/2019, eff. 5/24/2019)
