Section 0400-20-05-.133 - DETERMINATION OF PRIOR OCCUPATIONAL DOSE(1) For each individual who is likely to receive, in a year, an occupational dose requiring monitoring pursuant to Rule 0400-20-05-.71, the licensee or registrant shall: (a) Determine the occupational radiation dose received during the current year; and(b) Attempt to obtain the records of lifetime cumulative occupational radiation dose.(2) Prior to permitting an individual to participate in a planned special exposure, the licensee or registrant shall determine:(a) The internal and external doses from all previous planned special exposures; and(b) All doses in excess of the limits (including doses received during accidents and emergencies) received during the lifetime of the individual.(3) In complying with the requirements of paragraph (1) of this rule, a licensee or registrant may: (a) Accept, as a record of the individual's occupational dose for the current year, a written statement disclosing the nature and the amount of any occupational dose the individual may have received during the current year. Such statement shall be signed by the individual or the individual's most recent employer for work involving radiation exposure.(b) Accept, as the record of lifetime cumulative radiation dose, an up-to-date Form RHS 8-1H, or equivalent. Such form shall be signed by the individual and countersigned by an appropriate official of the most recent employer for work involving radiation exposure. If the individual is employed by a person other than the licensee or registrant, the countersignature shall be from the current employer.(c) From the most recent employer obtain reports of the individual's dose equivalent(s) for work involving radiation exposure. If the individual is employed by a person other than the licensee or registrant the report shall be from the individual's current employer. Reports may be obtained by telephone, telegram, 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.(4) The licensee or registrant shall record the exposure history together with all information required by paragraph (1) of this rule on Form RHS 8-1H6, or other clear and legible record. The form or record shall show each period in which the individual received occupational exposure and be signed by the individual receiving 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 Form RHS 8-1H. For any period in which the licensee or registrant does not obtain a report, the licensee or registrant shall place a notation on Form RHS 8-1H indicating the periods of time for which data are not available.
(5) 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: (a) In establishing administrative controls under paragraph (6) of Rule 0400-20-05-.50 for the current year, reduce the individual's allowable dose limit by 1.25 rems (12.5 mSv) for each quarter for which records were unavailable and the individual could have received occupational exposure; and(b) Not allow the individual to be available for planned special exposures.(6) The licensee or registrant shall retain the records on Form RHS 8-1H or equivalent until the Division terminates each pertinent license or registration requiring this record. The licensee or registrant shall retain records used in preparing Form RHS 8-1H for three (3) years after the record is made. 6 Licensees or registrants are not required to reevaluate the separate external dose equivalents and internal committed dose equivalents. Further, occupational exposure histories obtained and recorded on Form RHS 8-1 before January 1, 1994, 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.
Tenn. Comp. R. & Regs. 0400-20-05-.133
Original rule filed February 22, 2012; effective May 22, 2012. Authority: T.C.A. §§ 68-202-201 et seq., and 4-5-201 et seq.