ML22012A263

Trp 3 - St. Lucie Psl SLRA Breakout Question Reactor Head Closure Stud Bolting

ML22012A263
Person / Time
Site:	Saint Lucie
Issue date:	01/10/2022
From:	Office of Nuclear Material Safety and Safeguards
To:
Rodriguez-Luccioni H
References
L-2021-SLR-0002
Download: ML22012A263 (2)

Text

St. Lucie SLRA: Breakout Questions SLRA Section B.2.3.3, Reactor Head Closure Stud Bolting TRP 3 Note: Breakout Questions are provided to the applicant and will be incorporated into the publicly-available audit report.

Technical Reviewer David Dijamco 1/7/2022 Technical Branch Chief Angie Buford 1/7/2022 Breakout Session Date/Time To be filled in by PM Applicant Staff NRC staff To be filled out by PM during breakout Question Number SLRA Section SLRA Page Background / Issue (As applicable/needed)

Discussion Question / Request Outcome of Discussion Cite Section #

Cite Pg #

Description of issue and/or background Optional link to regulatory basis or code, as applicable If the question pertains to a document, cite the document and page number.

Could resemble RAI, but not as detailed Describe the purpose and/or need for the question (i.e., the nexus between the question and aging management)

Actual question here PM takes notes during audit

breakout, documenting next steps (ie:

resolved, supplement, ePortal request, etc.).

For complex technical issues, the TR should also take notes.

1 B.2.3.3 B-49 The staff needs clarification regarding the Enhancement on the Preventive Actions element (Element 2) about Why the need for an enhancement when PSL is already not using molybdenum disulfide (as stated in the

Program basis document revising the maintenance procedures to preclude use of molybdenum disulfide. The program basis document for the Reactor Closure Head Stud Bolting AMP (SLRA Section B.2.3.3), NEESL00008-REPT-062, Revision 0, states that PSL does not utilize lubricants containing molybdenum disulfide (disulfide or polysulfide) (page 10 of the document).

cited quote from the program basis document)?

2 B.2.3.3 Program basis document In NEESL00008-REPT-062, Revision 0, the discussion in Detection of Aging Effects element (Element 4) and Monitoring and Trending element (Element 5) refers to Table IWB-2500-1 of the ASME Code Section XI, consistent with GALL-SLR.

PSL is taking an exception to Element 4 because of a relief request that impacts the requirements in Table IWB-2500-1. Since Element 5 also refers to Table IWB-2500-1, why not take an exception to Element 5 also due to the same relief request?

3 B.2.3.3 B-51 The staff needs to see results of the most recent ASME Code Section XI inservice inspection (ISI) exams for the PSL reactor head closure studs (Item No. B6.20) and threads-in-flange (Item No. B6.40) to confirm the plant-specific operating experience.

The staff was able to confirm the results of the most recent ASME Code Section XI ISI exams for the following components from the ePortal documents:

54 PSL Unit 1 threads-in-flange 54 PSL Unit 2 reactor closure studs Place in the ePortal the results of the most recent ASME Code Section XI ISI exams for the following components (emphasis added to distinguish from those the staff was able to confirm):

54 PSL Unit 1 reactor closure studs (note that file 010620 RPV STUDS 1 THRU 54.pdf does not appear to show the results, i.e., whether there were recordable indications or not) 54 PSL Unit 2 threads-in-flange (note that file 5.12-001.pdf does not appear to show the results, i.e.,

whether there were recordable indications or not)