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 SLRA SLRA Page Background / Issue Discussion Question / Request Outcome of Number Section (As applicable/needed) Discussion

1. Cite Cite Pg # Description of issue and/or Actual question here PM takes notes Section # background during audit

• Optional link to regulatory basis or breakout, code, as applicable documenting

• If the question pertains to a next steps (ie:

document, cite the document and resolved, page number. supplement,

• Could resemble RAI, but not as ePortal request, detailed etc.).

• Describe the purpose and/or need for the question (i.e., the nexus For complex between the question and aging technical issues, management) the TR should also take notes.

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

Program revising the maintenance procedures cited quote from the program basis basis to preclude use of molybdenum document)?

document 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).

2 B.2.3.3 Program In NEESL00008-REPT-062, Revision PSL is taking an exception to Element basis 0, the discussion in Detection of 4 because of a relief request that document Aging Effects element (Element 4) impacts the requirements in Table and Monitoring and Trending IWB-2500-1. Since Element 5 also element (Element 5) refers to Table refers to Table IWB-2500-1, why not IWB-2500-1 of the ASME Code take an exception to Element 5 also Section XI, consistent with GALL- due to the same relief request?

SLR.

3 B.2.3.3 B-51 The staff needs to see results of the Place in the ePortal the results of the most recent ASME Code Section XI most recent ASME Code Section XI ISI inservice inspection (ISI) exams for exams for the following components the PSL reactor head closure studs (emphasis added to distinguish from (Item No. B6.20) and threads-in- those the staff was able to confirm):

flange (Item No. B6.40) to confirm the 54 PSL Unit 1 reactor closure studs plant-specific operating experience.

(note that file 010620 RPV STUDS 1 THRU 54.pdf does not appear to show The staff was able to confirm the the results, i.e., whether there were results of the most recent ASME Code recordable indications or not)

Section XI ISI exams for the following components from the ePortal 54 PSL Unit 2 threads-in-flange documents:

(note that file 5.12-001.pdf does not 54 PSL Unit 1 threads-in-flange appear to show the results, i.e.,

54 PSL Unit 2 reactor closure studs whether there were recordable indications or not)