QA experience at the University of Wisconsin accredited dosimetry calibration laboratory
- Univ. of Wisconsin, Madison, WI (United States)
The University of Wisconsin Accredited Dosimetry Calibration Laboratory (UW ADCL) employs procedure manuals as part of its Quality Assurance (QA) program. One of these manuals covers the QA procedures and results for all of the UW ADCL measurement equipment. The QA procedures are divided into two main areas: QA for laboratory equipment and QA for external chambers sent for calibration. All internal laboratory equipment is checked and recalibrated on an annual basis, after establishing its consistency on a 6-month basis. QA for external instruments involves checking past calibration history as well as comparing to a range of calibration values for specific instrument models. Generally, the authors find that a chamber will have a variation of less than 0.5 % from previous Co-60 calibration factors, and falls within two standard deviations of previous calibrations. If x-ray calibrations are also performed, the energy response of the chamber is plotted and compared to previous instruments of the same model. These procedures give the authors confidence in the transfer of calibration values from National Institute of Standards and Technology (NIST).
- Research Organization:
- Pacific Northwest Lab., Richland, WA (United States)
- OSTI ID:
- 250244
- Report Number(s):
- PNL--10076; CONF-9303220--; ON: DE96008816
- Country of Publication:
- United States
- Language:
- English
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