Nuclear Power Regulatory Overview The Keys To Our Success By Bob Wills RRPT GEL Laboratories, LLC

Key Objectives REMP-RETS & 10 CFR 61 Activities NRC – ODCM – REG Guides – NUREG-BTP’s Isotopes of Concern (How Hard To Look) QA/QC Regulatory Requirements Review Rad-Waste BTP & REMP BTP MARLAP

What Factors Drive QA/QC in US Nuclear Facilities?

Key Elements Outlined In Title 10 CFR 61 Classification of waste for near surface disposal Considerations given to long lived radionuclides and their shorter lived precursors (Parent to Daughter) Consideration must be given to the concentration of the radionuclide Consideration must be given to the physics form of the radionuclide (Normal or Special Form)

Key Isotopes For Waste Classification As Noted In 10 CFR 61.55 Ni-59 Nb-94 Tc-99 I-129 Pu-241 Cm-242 Alpha emitting nuclides with T1/2 greater than 5yr All nuclides with T1/2 less than 5yr H-3 C0-60 Ni-63 Sr-90 Cs-137

NRC NUREG 6239 Radioanalytical technology for 10 CFR 61 selected radionuclides Analytical methods for C-14, Co-60,Ni-63/59, Tc-99, Sr-90, Nb-94, I-129, Cs-137 Additional isotopes Be-7/10, Al-26, Cl-36, Mo-93, Cd-109/113m, Sn 121m/126

How low do you need to go for 10 CFR 61 isotopes? Limits as noted in the BTP page 5 are 0.01 times the value as noted in Table 1 or Table 2 GEL’s administrative limits are 1000 times lower than the required limits Lets review the values in BTP page 5...

Analytical Requirements in the ODCM Within the ODCM you have license requirements for analytical testing The Environmental Monitoring section lists requirements for interlaboratory comparison programs This may apply to 10 CFR 61 programs Would this be a good work practice for INPO?

Key Isotopes for REMP Gross Alpha / Beta (Air Samples) Tritium (Ground and Drinking Water) Co-60 (Ground and Drinking Water / Food) Cs-137(Ground and Drinking Water/ Food) I-131 (Milk and Air Samples) Ni-63 (Ground and Drinking Water) Fe-55 (Ground and Drinking Water) Sr-89 & 90 (Ground and Drinking Water

How low do you need to go for REMP analysis? All LLD’s (MDC) listed are “a-priori” or prior to the count (page 40 NUREG-1301) guidance for ODCM Limits as noted in the REMP BTP NUREG-1301 page 64 Table 3.12-2 All programs are driving MDC’s well below the required limits Many plants are requesting Tritium at 150 pCi/L

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NRC Regulatory Guides & NUREGs

NRC Regulatory Guide 4.15 Records: Track and Control of Samples, Instrument Data (Backgrounds, Calibration Data etc.) Radionuclide Reference Standards used for Calibration (NIST traceable) Performance checks required with control charts Corrective action program to review conditions that fall outside the predetermined control value

4.15 Guide Continued Alpha and gamma detectors energy calibration Energy resolution checks for spectrometry systems Quality control samples Intralaboratory Analysis (Duplicates), LCS, Method Blank Data Review and Computational Checks Audits of laboratory systems

Overview of MARLAP Volume I, II, III

MARLAP Table Of Contents Review Volume 1 section 3.0 Sample Matrix Planning Volume 1 section 8.0 Data V&V / Quality Control Samples etc. Volume II section 12.0 Laboratory Sample Prep. Volume II section 15.0 Quantification of Radionuclides Volume II section 16 Data Acquisition, Reduction and Reporting Volume II section 18 Laboratory QC

Questions?

Ni-63 Beta Spectrum

Tc-99m Beta/Gamma Spectrum No mass or charge, so are not directly detectable. Normally accompanied by alpha and beta particles, auger and/or conversion electrons Internal conversion …. gamma interacts with orbital electron Energy given to electron allows escape (conversion electron) Outer shell electron fills vacancy…excess energy emitted as xray or Auger Electron. Electron Capture Nucleus captures electron…proton converted to neutron Outer shell electron fills vacancy…excess energy emitted as xray or Auger Electron

Tc-99 Beta Spectrum Shared energy between the beta particle and an antineutrino Because of energy sharing and non-detectability of antineutrinos, the energy spectrum is very broad. 0 to Emax

Fe-55/Fe-59 Beta Spectrum