ML20140C885

Staff Requirements Memo Re SECY-97-077, Draft Rg,Std Review Plans & NUREG Document in Support of Risk Informed Regulation for Power Reactors

ML20140C885
Person / Time
Issue date:	06/05/1997
From:	Hoyle J NRC OFFICE OF THE SECRETARY (SECY)
To:	Callan L NRC OFFICE OF THE EXECUTIVE DIRECTOR FOR OPERATIONS (EDO)
References
REF-10CFR9.7 FACA, SECY-97-077-C, SECY-97-77-C, NUDOCS 9706100104
Download: ML20140C885 (2)

Text

-

~

f * * % UNITED STATF S syg c; NUCLE AR REGULATORY COMMISSION (Ef' "

mt 13 S8 y(f 'l.:

.,  ; W ASmNGTON, D C 20555

[  %, vjf June 3, 1997

,0 ^ ' *****

OFFICE OF THE

{ SE C R E T AR v'

. .w .

f L. Joseph Callan Execu iv Dir ctor for Operations MEMORANDUM TO:

(~

ACu -

John '. Hoyl ,

Secretary FROM:

/

SUBJECT:

STn F REQUIREMENTS - SECY-97-077 - DRAFT REGULATORY GUIDES, STANDARD REVIEW PLANS AND NUREG DOCUMENT IN SUPPORT OF RISK INFORMED REGULATION FOR POWER REACTORS regula' tory The Commission has approved publication of the draftfor a 90-day guides, standard review plans and NUREG document public comment period. (SECY Suspense: 6/13/97)

(EDO)

The staff should provide the Commission The information public workshop on (s) itstoplans be for conducting public workshops. period should be of conducted during the public commentsufficient duration and depth to p the approaches described in the documents.

In addition, the staff should provide the Commission information on the risk-informed on its plans for training the NRC staff 1) contained in the regulatory guidance regulatory approachtes) in overall PRA methods and standard techniques.

review plan documents and 2)Particular the attention regional should level. be give basic user-level knowledge of PRA methods at (SECY Suspense: 9/30/97)

(EDO) l The staff should continue to evaluate the proposed d The staff should also develop guidance on how to confirm thelicensing basis assumptions and analyses used to justify current changes.

Of0.5

,9 I

I THIS SRM, SECY-97-077, AND THE COMMISSION VOTING SECY NOTE:

RECORD CONTAINING THE VOTE SHEETS OF ALL ,

COMMISSIONERS WILL BE MADE PUBLICLY AVAIL

<_.c

' WORKING DAYS FROM THE DATE OF THIS SRM. i m m .,_ ; -

l

?.I 9706100104 970605 Cg f af 4 5 A "

1

"- PDR 10CFR .

l PT9.7 PDR

i 4:

1.

$'5 1 j lt2 In particular, the staff should explore the following areas to

,j add clarity and consistency to the process.

l

,r i 1. The feasibility of assigning assurance levels for l conformance to decision criteria.

l

2. The use of point values for comparisons with decision l

l criteria, without any explicit consideration of uncertainty (i.e., how consideration of uncertainty 4

j should be explicitly considered in conjunction with j

using point values -- for example, use of probability ,

j limits)  !

i j 3. The implications of small increases in core damage j frequency (CDF) and large early release frequency j

(LERF) codified in the guidance documents, as a j

function of the uncertainty associated with the FRA results.

4. Codifying in the guidance documents the experience gained from the pilots to provide additional guidance on the " increased management attention" process when proposed changes approach the guidelines. 4 1

1

5. Clarifying the distinction between risk-informed and l risk-informed, performance-based regulatory approaches. J The staff should continue to pursue the long range goal of  ;

improving the overall quality and consistency of PRAs performed  !

by different licensees by promoting high quality standards.

The staff should continue its efforts to complete, in a timely  !

manner, the pilot applications of risk-informed regulation, and l to complete the draft regulatory guidance and standard review plan for inservice inspection.

cc: Chairman Jackson Commissioner Rogers Commission =r Dicus Commissioner Dia:

Commissioner McGaffigan OGC CIO CFO OCA OIG Office Directors, Regions, ACRS, ACNW, ASLEP (via E-Mail)

PDR DCS