Nebraska Administrative Code
Topic - HEALTH AND HUMAN SERVICES SYSTEM
Title 180 - CONTROL OF RADIATION
Chapter 7 - MEDICAL USE OF RADIOACTIVE MATERIAL
Section 180-7-030 - CALIBRATION OF SURVEY INSTRUMENTS

Universal Citation: 180 NE Admin Rules and Regs ch 7 ยง 030

Current through September 17, 2024

030.01 REQUIREMENTS. A licensee must calibrate the survey instruments used to show compliance with 180 NAC 7 and 180 NAC 4 before first use, annually, and following any repair that affects the calibration. A licensee must:

(A) Calibrate all required scale readings up to 10 mSv (1000 mrem) per hour with a radiation source;

(B) Have each radiation survey instrument calibrated:
(i) At energies appropriate for use and at annual intervals or after servicing instrument, other than battery changes;

(ii) For linear scale instruments at two points located approximately one-third and two-thirds of full-scale on each scale; for logarithmic scale instruments, at mid-range and each decade, and at two points of at least one decade; and for digital instruments, at three points between 0.02 and 10 mSv (2 and 1,000 mrem) per hour; and

(iii) For dose rate instruments, so that an accuracy within plus or minus twenty percent of the true radiation dose rate can be demonstrated at each point checked; and

(C) Conspicuously note on the instrument the date of calibration.

030.02 TOLERANCE. The licensee may not use survey instruments if the difference between the indicated exposure rate and the calculated exposure rate is more than twenty percent.

030.03 SURVEY INSTRUMENT CHECK. A licensee must check each survey instrument for consistent response with a dedicated check source before each use. The licensee is not required to keep records of these checks.

030.04 RECORD. A licensee must maintain a record of each survey instrument calibration according to 180 NAC 7-092

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