ML20202C988

From kanterella
Jump to navigation Jump to search
Discusses Agreement on 10CFR50.55a
ML20202C988
Person / Time
Issue date: 02/05/1996
From: Serpan C
NRC
To: Cherny F
NRC
Shared Package
ML20202C086 List:
References
FRN-62FR63892, RULE-PR-50 AE26-1-035, AE26-1-35, NUDOCS 9802130094
Download: ML20202C988 (3)


Text

_ _ _ _ _ - _ _ - . _ _ - - _ - _ _ _ _ -

+

e ' - ' .+

lg j p -/

From: Charles Serpan To:: FCC1-Date: '2/5/96 8:24am C heVettV , $, C- ,

Subject:

- agreement.on 5055a I

i i

J i

l I

~

9902130094 900206 PDR PR SO 62FR63892 PDR frozidoo7Y '

35

/

As n -/

Meeting on 50.55a 2 February, 1996 Serpan, Cherny, Strosnider, Wessman, Campbell Proposed approach for rulemaking on 50.55a Delete " baseline" concept using 1989 ASME-XI/ISI and 1990 ASME/IST Retain ongoing procedure for 120-month update of NRC-approved code.

Results in de facto "baselining" to 1989-XI and 1990 O&M as they are already accepted.

Any new 120-month update will have to pick up to that level anyway.

Allow voluntary use of 1995 addenda to Code.

Only issue beyond the 1989/1990 editions not considered voluntary is Appendix VIII; we intend to impose that now through backfit.

RES must be sure that such voluntary use does not result in an unacceptable decrease in sa'ety. ,

Industry 120-month updates beyond those based on 1989/1990, would therefore not have to modify plans just to accommodate administrat te changes.

Assume that Appendix VIII can proceed as a backfit with the present justification Get the package to CRGR with the present backfit analysis, under assumption they will agree and force the issue versus OGC with Taylor. j Await (hope for) decision on compliance /backfit issue for IWE/IWL, then perhars use that as precedent for the Appendix VIII issue.

Redefine " adequate protection" per Gery Mizuno, and proceed with imposition of Appendix VIII on that basis. I proceed with new, revised package including all other elements.

\

?* .

j)g 7k-l g% F propose subsequent, new rulemaking to reviss backfit rule ~to allow for a lower hurdle to be met for codes s and standards. adoptions, which are believed to represent a " substantial increase" in safety; this concept is suggested in NUREG/BR-0058, Rev. 2, footnote 5, page 3.

Once-the revised 50.55a rulemaking and the_ subsequent backfit rule change on the codes and Standard- hurdle is resolved, - (?i999/2000?) initiate another lemaking to update code to the then, code addendum a voluntary basis, with appropriate backfits .or items 1 considered safety issues.

Use the Jordan-Sheron procedure for backfitting safety-significant issues both as part of the normal update process, and on an urgent no-waiting-time imposition basis. Da not codify this process per se, but self-impose on ourselves.

Urge the: code to separate safety-significant and administrative issues in updates so that NRC can clearly identify those .tt wants to be backfitted as saf ety-significant iter.is ,

i 1 4 r =-

n