Dealing with Both BWR and PWR in my current job points out a glaring difference between the BWR and PWR Reload Testing and Power Ascension programs. BWR generally only verify SDM and do not do any other Low Power Physics testing such as ITC/MTC, Zero Power Flux Maps, Boron End Point (Reactivity Anomaly) etc.
I have found Reg Guide 1.68 that applies to Initial New Reactor Testing requirements Appendix A.3 and A.4 , but have found no such Reg Guide for Reload Testing Requirements.
ANSI/ANS 19.6.1 "Reload Startup Physics Tests for PWR" is generally referenced in procedures.
Where does the NRC endorse the 19.6.1 as acceptable, and to meet the requirements of what regulation/document?
Has anyone tried to remove the LPPT program or reduce it to just SDM (Rodworth)?
Ken,
We've never tried to remove LPPT program or reduce it to just SDM. There is another Tech Specs besides SDM that require LPPT, MTC verification prior to Mode 1 (TS 3.1.3.1). As to why PWRs still perform LPPT, it is not an NRC requirement but we all do it. It has been streamlined from a 2-day evolution when I started 29 years ago to 8 hours of testing. I don't believe the NRC has ever endorsed the ANSI standard. This was developed by industry and recently approved by PWROG.
AR
From: "Kenneth R Pike" kpike01@comcast.net To: pwrrm@retaqs.com Date: 07/15/2011 08:50 AM Subject: [Pwrrm] PWR Low Power Physics tests WHY? Sent by: pwrrm@retaqs.com
Dealing with Both BWR and PWR in my current job points out a glaring difference between the BWR and PWR Reload Testing and Power Ascension programs. BWR generally only verify SDM and do not do any other Low Power Physics testing such as ITC/MTC, Zero Power Flux Maps, Boron End Point (Reactivity Anomaly) etc.
I have found Reg Guide 1.68 that applies to Initial New Reactor Testing requirements Appendix A.3 and A.4 , but have found no such Reg Guide for Reload Testing Requirements.
ANSI/ANS 19.6.1 "Reload Startup Physics Tests for PWR" is generally referenced in procedures.
Where does the NRC endorse the 19.6.1 as acceptable, and to meet the requirements of what regulation/document?
Has anyone tried to remove the LPPT program or reduce it to just SDM (Rodworth)?_______________________________________________ PWRRM mailing list PWRRM@retaqs.com http://www.keffective.com/mailman/listinfo/pwrrm
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Kenneth R Pike