Document: NUREG-0800
Document ID: c37e8c68-ed08-434b-b15c-438f1915858a
Document Type: srp
Title: PROCESS AND POST-ACCIDENT SAMPLING SYSTEMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070526.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.3.2
CFR Part: 
CFR Title: 

Content:
ntial for reactor 51 coolant loss from the rupture of a sample line and provides Accident Evaluation Branchthe PERB with estimates of RCS fluid losses that would result from sample line 52 rupture. 6. CMEBEMCB reviews the post-accident sampling system and operational procedures to 53 determine compliance with the guidelines of item II.B.3 in NUREG-0737 (reference 9) and of Regulatory Guide 1.97 (reference 8) and the additional clarifications in 54 55 specific acceptance criterion II.5 above. CMEBEMCB verifies that dilution, mixing 56 57 and sample collection steps will not introduce excessive analytical errors. CMEBEMCB verifies that the frequency of system functional testing will be adequate 58 to ensure operability of the system and that operators are trained and kept proficient in the use of the system. CMEBEMCB reviews the procedure for relating radionuclide 59 concentrations to the extent of core damage. CMEBEMCB reviews information 60 pertaining to accuracy and sensitivity of chemical analysis procedures and on-line instrumentation under post-accident chemistry conditions (high specific sample activity and possible analytical interference due to high levels of fission products-iodine, iodide, bromide, cesium, rubidium). In the FSERs for the ABWR and System 80+ design certifications the staff accepted exemptions from certain 10 CFR 50.34(f)(2)(viii) and NUREG 0737 post accident sampling system (PASS) requirements. Details of these exemptions are outlined in the following table: 9.3.2-13 DRAFT Rev. 3 - April 1996 APPLICABILITY REQUIRED SOURCE EXEMPTION BASIS SAMPLE -System 80+ Reactor Item II.B.3 of Sample for Sample used only to -ABWR coolant NUREG 0737 boron within 8 confirm mitigation system (RCS) hours measures. Core condition boron obtained by other methods concentration (neutron flux monitoring). within 3 hours -System 80+ RCS activity Item II.B.3 of Sample for Sample used only to -ABWR within 3 hours NUREG 0737 activity within confirm mitigation 24 hours