ML19309F708

From kanterella
Jump to navigation Jump to search
Advises That RO 80-20 in Incorrectly Identified Namco Switches on safety-related Valves as Functional During Accidents.Switches Utilized Only for Light Indication. RO 80-20 Will Be Deleted from LER File
ML19309F708
Person / Time
Site: Rancho Seco
Issue date: 04/23/1980
From: Mattimoe J
SACRAMENTO MUNICIPAL UTILITY DISTRICT
To: Engelken R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
IEB-79-01, IEB-79-1, NUDOCS 8004300421
Download: ML19309F708 (1)


Text

_

e o

OUO4300 O' f/

SD_ CUD S

SACRAMENTO MUNICIPAL UTILITY DISTRICT O 6201 S Street Box 15830, Sacrarnento, California 95813; (916) 452-3211 April 23, !930 Mr. R. H. Engelken, Director Region V Office of Inspection r, Enforcement U. S. Neclear Regulatory Commission 1990 North California Boulevard Walnut Creek Plaza, Suite 202 Walnut Creek, California 94596 Re: OperatingLicenseDPR-54 Occket No. 50-312 Reportable Occurrence 80-20

Dear Mr. Engelken:

Bulletin 79-01B issued January 14, 1980, item 6, required the District to make an immediate report if nonenvironmentally qualified components are utilized as safety equipment and required to function during postulated accidents.

AreportwassubmittedtoyouroificeonApril 17, 1980 stating

~

that NAMCO switches, Model Nos. M-2-300 and D1200G, were identified on safety related valves. The subsequent investigation determined that these switches are solely utilized for light Indication.

The switches do not control actuation, position nor any other interlock function. Therefore, this occurrence is not reportable and Reportable Occurrence -

80-20 will be deleted from the LER flie.

Respectfully submitted, J. J. Mattimoe Assistant General Manager and Chief Engineer i

l JJH:RWC:Jr 1

cs: Director, MIPC (2)

AN ELECTRIC SY TEM S E RVIN G MORE T H A N 6 0 0,0 0 0 IN THE HEART OF CALI F O R N i a