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NEI/NIST Measurements Assurance Program for the Nuclear Power Industry

NEI/NIST Measurements Assurance Program for the Nuclear Power Industry

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NEI/NIST Measurements Assurance Program for the Nuclear Power Industry

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  1. NEI/NIST Measurements Assurance Programfor the Nuclear Power Industry 17th Annual RETS-REMP Workshop June 25-27, 2007 Dan Golas Nuclear Energy Institute

  2. Overview • History of Program • Original Program Details • Samples • Results • Current Program • Benefits of Participation • Conclusion

  3. History of Program • 1985 - quality assurance conference in Las Vegas • February 1986 - 8 source suppliers and utilities, NRC and EPA met at NIST • April 1986 – follow-up meeting at NIST to refine and formulate the program • Summer 1986 – Recruitment of participants began • December 1986 – Meeting of interested parties to finalize the program framework • April 1987 – Program is kicked off

  4. Original Program • Modeled after NEI/NIST Radiopharmaceuticl Measurement Assurance program in existence since 1974 • Three categories of membership • Utilities • Service Laboratories • Source suppliers

  5. Original Program • Six sources per year • Individual radionuclides or mixtures with and without interferences • Distributed as “blinds” • Activities in kBq (µCi) range

  6. Radionuclides Ag-110 Am-241 Ba-133 Be-7 C-14 Cd-109 Ce-139 Ce-141 Ce-144 Cm-244 Co-57 Co-58 Co-60 Cr-51 Cs-134 Cs-137 Eu-152 Fe-55 Fe-59 H-3 Hg-203 I-125 I-129 I-131 Kr-85 Mn-54 Nb-95 Ni-63 Np-237 Pb-210 Pm-147 Pu-238 Pu-239 Pu-241 Ru-106 Sb-124 Sb-125 Se-75 Sr-85 Sr-89 Sr-90 Tc-99 Th-230 U-234 U-235 U-238 Xe-127 Xe-133 Y-88 Zn-65 Zr-95

  7. Sources NIST 5-mL ampoule Filters for dissolution 30 cc double stopcock sphere Simulated 47-mm diameter air filter

  8. Original Program • Six sources per year • Individual radionuclides or mixtures with and without interferences • Distributed as “blinds” • Activities in kBq (µCi) range • Sources determined by participants at annual steering committee meeting • Assistance with measurement problems

  9. Participants’ Results

  10. Participants’ Results 2

  11. Original Program • Six sources per year • Individual radionuclides or mixtures with and without interferences • Distributed as “blinds” • Activities in kBq (µCi) range • Sources determined by participants at annual steering committee meeting • Assistance with measurement problems • Development of new calibrations and geometries

  12. Development • 141Ce, 5 mL solution in NIST ampoule • 144Ce-144Pr, 5 mL solution in NIST ampoule • Marinelli beaker mixed gamma calibration source 1 Liter GA-MA “130G” with: 51Cr, 57Co, 60Co, 88Y, 109Cd, 137Cs, 139Ce, 203Hg, and 241Am • Marinelli beaker mock “soil” calibration source 1 Liter GA-MA “130G” with: 57Co, 60Co, 85Sr, 88Y, 109Cd, 113Sn, 137Cs, and 241Am, (203Hg) • Calibration of simulated 47-mm diameter air filter and double stopcock 30 cc gas sphere geometries

  13. Utility Results

  14. Service Laboratory Results

  15. Source Supplier Results

  16. Current Program • Six test sources each year - approximately bimonthly (determined at annual meeting the prior year) • Same test source to multiple reactor sites and to the utility’s contract laboratory • Sources are prepared and calibrated at NIST – distributed with activity undisclosed • Participants measure the source and report results by way of the internet • Report of Traceability and a Report of Test is then issued by NIST (source may then be used as a calibration source) • $15,000 per year for each participant – covers program expenses and source development

  17. 2007 Source Supplier Samples

  18. 2007 Utility Samples

  19. Benefits of Participation • Participation in the program provides direct traceability to NIST and would be fully compliant with Regulatory Guide 4.15 • Participation in the program meets NQA 1 requirements for testing and verification of laboratory measurements • Participants in the program have received minimal scrutiny from the NRC • In one case were there were differences under question from the NRC the program served as a independent referee which resulted in favor of the utility • The program can be used as a means of verifying the accuracy of contract laboratory • For multi-site utilities it provides a means of cross checking between on-site laboratories

  20. Testimonial The South Texas Project with only one site has used this program to meet all required inter-comparisons including the Part 50 analysis, the Part 61 analysis, the REMP program plus the in-plant Health Physics and Chemistry counting rooms. The site has been inspected numerous times by the NRC since these inter-comparisons were implemented and they have been recognized as good programs. J. Darrell Sherwood

  21. Conclusion – What you should do • If you are already in the program – stay in the program • If you aren’t in the program – join the program • If you aren’t in the program and don’t want to join the program – specify on all vendor contracts that they must belong to the program