Section He-P 4035.53 - Dosimetry Equipment(a) Except for low dose-rate remote afterloader sources where the source output or activity is determined by the manufacturer, a licensee shall have a calibrated dosimetry system available for use.(b) To satisfy the requirement in He-P 4035.53(a), one of the following two conditions shall be met: (1) The system shall have been calibrated using a system or source traceable to the National Institute of Standards and Technology and published protocols accepted by nationally recognized bodies; or by a calibration laboratory accredited by the American Association of Physicists in Medicine. The calibration shall have been performed within the previous 2 years and after any servicing that may have affected system calibration; or(2) The system shall have been calibrated within the previous 4 years and 18 to 30 months after the calibration, intercompared with another dosimetry system that was calibrated within the past 24 months by the National Institute of Standards and Technology or by a calibration laboratory accredited by the American Association of Physicists in Medicine.(c) The results of a calibration intercomparison shall have indicated that the calibration factor of the licensee's system had not changed by more than 2 percent.(d) The licensee shall not use an intercomparison result to change the calibration factor.(e) When intercomparing dosimetry systems to be used for calibrating sealed sources for teletherapy units, the licensee shall use a comparable unit with beam attenuators or collimators, as applicable, and sources of the same radionuclide as the source used at the licensee's facility.(f) The licensee shall have a dosimetry system available for use for spot-check output measurements, if applicable. To satisfy this requirement: (1) The system shall be compared with a system that has been calibrated in accordance with He-P 4035.53(a) through (e);(2) The comparison shall have been performed within the previous year and after each servicing that may have affected system calibration; and(3) The spot-check system shall be the same system used to meet the requirements in He-P 4035.53(a) through (e).(g) The licensee shall retain a record of each calibration, intercomparison, and comparison of its dosimetry equipment for the duration of the license. For each calibration, intercomparison, or comparison, the record shall include: (2) The manufacturer's name, model numbers, and serial numbers of the instruments that were calibrated, intercompared, or compared as required by He-P 4035.53(a) through (f);(3) The correction factor that was determined from the calibration or comparison or the apparent correction factor that was determined from an intercomparison; and(4) The names of the individuals who performed the calibration, intercomparison, or comparison.N.H. Admin. Code § He-P 4035.53
(See Revision Note at part heading for He-P 4035) #6942, eff 2-1-99; ss by #8800, INTERIM, eff 2-1-07, EXPIRED: 7-31-07
New. #8959, eff 8-7-07
Amended by Volume XXXV, Number 32 Filed August 13, 2015, Proposed by #10897, Effective 7/22/2015, Expires1/18/2016.Amended by Volume XXXVI Number 01, Filed January 7, 2016, Proposed by #11011, Effective 1/15/2016, Expires 1/15/2026.Amended by Volume XL Number 24, Filed June 11, 2020, Proposed by #13048, Effective 6/2/2020, Expires 6/2/2030.