ML20055D206

From kanterella
Jump to navigation Jump to search
Staff Requirements Memo Re 900608 Briefing in Rockville,Md on Incident Investigation Team Rept on Loss of Offsite Power & Subsequent Loss of RHR Removal Capability at Vogtle
ML20055D206
Person / Time
Site: Vogtle  
Issue date: 06/28/1990
From: Chilk S
NRC OFFICE OF THE SECRETARY (SECY)
To: Taylor J
NRC OFFICE OF THE EXECUTIVE DIRECTOR FOR OPERATIONS (EDO)
References
REF-10CFR9.7 M900608A, NUDOCS 9007050150
Download: ML20055D206 (2)


Text

e -

cr_

b ses

\\

. ;03

%s

... M 1

UNITED STATES IN RESPONSE, PLEASE

_[ "

,,, ' 4j NUCLEAR REGULATORY COMMISSION REFER TO:

M900608A W ASHIN GTON, D.C. 20555 June 28, 1990

- OFFICE OF THE SECRETARY MEMORANDUM FOR:

James M. Taylor Executive Director for O ations l

1 FROM:

Samuel J.

Chilk, Secreta C=>

SUBJECT:

STAFF REQUIREMENTS - BRI EFJ NG ON IIT REPORT ON VOGTLE EVENT, 10:00 ALMg, FRIDAY, JUNE 8, 1990, COMMISSIONERS' CONFERENCE ROOM, ONE L

WHITE FLINT NORTH, ROCKVILLE, MARYLAND (OPEN TO PUBLIC ATTENDANCE) i The Commission

  • was briefed by the NRC staff on the Incident Investigation Team Report on the Vogtle event involving a L

loss of off-site power and subsequent loss of residual heat removal capability.

'The staff should ensure formal tracking and follow-up of issues relating.to this event.

Consult with the Commission on the specific _ follow-up action plans and the schedule for

-completion.

I (EDO)

(SECY Suspense:

8/3/90)

The Commission requested feedback on the following specific items.

l t

1.

Report the status of ongoing and/or anticipated research into the sequence of events during the loss of residual heat removal and the thermohydraulic processes involved.

(EDO)

(SECY Suspense:

8/31/90) 2.

Does the current NRC effort in the development of risk-based technical specifications include provisions covering-shutdown and refueling modes?

(EDO)

(SECY Suspense:

7/27/90) 3.

How are shutdown risks being addressed in the advanced and evolutionary designs?

(EDO)

(SECY Suspense:

8/31/90)

I l

  • Comm4bsichdr Roberts was not present.

((

I 9007050150 900628 PDR 10CFR 1

l 1

PT9.7 PDC l

Y cl

. e.

as t es

.t T ' ' m.c.

e.

h4 4.

Report-the total 1 man-hour effort required to conduct the IIT.

OneJunec14, 1990, the EDO provided.a-preliminary L

.-estimate of resources expended for the Vogtle IIT.

When!

all data is available,' provide _a; final report.

( EDO) =

(SECY. Suspense:

-8/31/90)

Commissioner Remick expressed an interest in following staff's-

-activities in addressing the procedural 1and training weaknesses

that were uncovered.and requested feedback'on=the following specificLitems.

1.

Review NTSB's prearranged procedures for calling upon technical experts and assess if there is-any element ir

.that program which~ may be useful in otr future :activittas.

f (EDO)

(SECY Suspense:

9/28/90) 2.

Review the ACRS' letters of Septen.ber 14, 1988, Pronosed Resolution of Generic Issue 99. "Imoroved Reliability of RHR Canability'in PWRs," and February 16, 1989, Further

=ACRS Comment'on Procosed Resolution of Generic _ Issue 99, "Imoroved Reliability of RHR Canability in PWRs" in which-the ACRS addressed closure of equipment hatches..

. Summarize the conclusions-(related to equipment hatches) from the inspection program conducted to review licensee's-responses to the recommendations outlined in Generic j

Letter 88-17, and address the ACRS comments in their

{

letter of February 16, 1989.

(EDO)

(SECY Suspense:

8/31/90) cc:

' Chairman Carr Commissioner Roberts Commissioner Rogers Commissioner ~Curtiss

]

Commissioner Remick OGC' GPA ACRS i

PDR

. Advance DCS - P1-24 i

W