ML20204G611

Forwards AEOD Engineering Evaluation Rept AEOD/E407, Initiation & Indication Circuitry for HPCI Sys. Actions Taken to Initiate Design Change to Remove Concern Re Compliance Appropriate

ML20204G611
Person / Time
Site:	05000000, Shoreham
Issue date:	03/23/1984
From:	Ashe F NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD)
To:	Seyfrit K NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD)
Shared Package
ML20204G617	List: IA-85-668, Partially Withheld Notice of Board Meeting 85-10 ML20204G611 ML20204G619 ML20204G631 ML20204G654 ML20204J205 ML20205D348 ML20205P875 ML20205P887 ML20205P901 ML20205P971 ML20205P984
References
FOIA-85-668 AEOD-E407, NUDOCS 8404200383
Download: ML20204G611 (2)

Text

_ _ _ _ _ _ _ _ _ _ _ _ _ _ . _ _ . _ _

pa at?u UNITE 3 STATES

/

'o,,

g NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20566 AEOD/E407 E

E

.....+# MAR 2 31984 MEMORANDUM FOR: Karl V. Seyfrit, Chief Reactor Operations Analysis Branch Office for Analysis and Evaluation of Operational Data THRU:

Matthew Chiramal, Lead Engineer Plant Systems Unit Reactor Operations Analysis Branch )

FROM:

Frank Ashe, Plant Systems Engineer Plant Systems Unit Reactor Operations Analysis Branch

SUBJECT:

INITIATION AND INDICATION CIRCUITRY FOR HIGH PRESSURE COOLANT IMJECTION (HPCI) SYSTEMS

REFERENCE:

Nuclear Regulatory Commission, "IE Inspection Report:

50-322/83-28 dated September 14, 1983," Plant Unit: -

{

Shoreham Nuclear Power Station.

i The enclosed Engineering Evaluation Report is forwarded for your review and consideration.

This report provides infonnation concerning the initiation and indication facilities. circuitry for HPCI systems at boiling water reactor (BWR)

Power Station did not appear to meet the intent 279-1971.

of IEEE Stan Specifically, the concern noted was that for certain conditions, the HPCI system function would not go to completion once initiated, although the indication circuitry would respond as though the system had gone to completion. i As a result of this observation, the licensee committed to initiate a design the required standard. change to remove the concern regarding compliance with The identified concern for the HPCI circuitry at the Shoreham Nuclear Power Station prompted the Plant Systems Unit to review the HPCI initiation and indication circuitry for three additional facilities.

Thethree the results of this review was that this concern is applicable to two of facilities.

7 m, ,

9

~ - _ t; /

~ . - _ _

Karl V. Seyfrit Based on our review of this issue, we believe that the actions taken at the Shoreham Station were appropriate and, if implemented properly, the concern regarding compliance with the intent of the required IEEE Standard should be removed. Also, we believe that NRR should consider reviewing the identified area of the HPCI circuitry of other BWR facilities so as to verify that this area of the circuitry is acceptable in tems of complying with the required Standard. Finally , we suggest that the enclosed report be provided to NRR by a separate transmittal memorandum.

b L YL Frank Ashe, Plant Systems Engineer Plant Systems Unit Reactor Operations Analysis Branch

Enclosure:

As stated .

l

_ cc: w/ enclosure G. Rivenbark, NRR M. Grotenhuis, NRR ~

- - - . . - . . . - , . , . , - - , . , - - - .- ., .,n, . , , , . , , - . , , , , - - -, ,.

- . , , , - . - - , , , . . _ - , . . , , - - , -