N.H. Admin. Code § He-P 4047.08

Current through Register No. 45, November 7, 2024

Section He-P 4047.08 - Calibration of Survey Instruments

(a) The registrant shall ensure that the survey instruments used to show compliance with He-P 4047 have been calibrated as follows:

(1) Before the first use;

(2) At intervals not to exceed 12 months; and

(3) Following repair.

(b) To satisfy the requirements of He-P 4047.08(a) , the registrant shall:

(1) Calibrate all required scale readings up to 10 mSv (1000 mrem) per hour with an appropriate radiation source that is traceable to the National Institute of Standards and Technology (NIST); and

(2) Calibrate at least 2 points on each scale to be calibrated. These points shall be approximately 1/3 to 2/3 full-scale.

(c) To satisfy the requirements of He-P 4047.08(b) , the registrant shall:

(1) Consider a point as calibrated if the indicated dose rate differs from the calculated dose rate by not more than 10 percent; and

(2) Consider a point as calibrated if the indicated dose rate differs from the calculated dose rate by not more than 20 percent if a correction factor or graph is conspicuously attached to the instrument.

(d) The registrant shall retain a record of each calibration required in He-P 4047.08(a) for 3 years.

(e) The record required in He-P 4047.08(d) shall include:

(1) A description of the calibration procedure; and

(2) A description of:

a. The source used;

b. The certified dose rates from the source;

c. The rates indicated by the instrument being calibrated;

d. The correction factors deduced from the calibration data;

e. The signature of the individual who performed the calibration; and

f. The date of calibration.

(f) The registrant may obtain the services of individuals registered or licensed by DHHS/RHS, the U.S. Nuclear Regulatory Commission, an Agreement State, or a Licensing State to perform calibrations of survey instruments.

N.H. Admin. Code § He-P 4047.08

#6827, eff 8-6-98; ss by #8692, INTERIM, eff 7-27-06, EXPIRES: 2-2-07; ss by #8808, eff 1-24-07

Amended byVolume XXXV Number 06, Filed February 12, 2015, Proposed by #10764, Effective 1/23/2015, Expires7/22/2015.

Amended by Volume XXXV Number 32, Filed August 13, 2015, Proposed by #10894, Effective 7/21/2015, Expires 7/21/2025.