05000312/LER-1981-045, Forwards LER 81-045/03L-0.Detailed Event Analysis Also Submitted

Forwards LER 81-045/03L-0.Detailed Event Analysis Also Submitted

ML20010J487
Person / Time
Site:	Rancho Seco
Issue date:	09/23/1981
From:	Mattimoe J SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:	Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20010J488	List: 05000312/LER-1981-045, Forwards LER 81-045/03L-0.Detailed Event Analysis Also Submitted 05000312/LER-1981-045-03, /03L-0:on 810827,during Plant Shutdown,Decay Heat Pump B Was Found Leaking.Cause Not Stated.Shaft Seals Will Be Replaced Prior to Next Reactor Startup
References
NUDOCS 8110050152
Download: ML20010J487 (1)

LER-1981-045, Forwards LER 81-045/03L-0.Detailed Event Analysis Also Submitted

Event date:
Report date:
3121981045R00 - NRC Website

text

-

i s

$ SMUD SACRAMENTO MUNICIPAL UTILITY DISTRICT C 6201 S Street, Box 15830, Sacramento, California 95813; (916) 452-3211 4

i i

1 l

September 23, 1981 4

W-

/ip

\\\\'\\

r,r f

[-[p\\>OgI,s/j i

R II ENCELKFN, DIRECTOR k'

REGION V 0FFICE OF INSPECTION & ENTOPCEf!ENT f

A 9 US NUCLEAR REGULATORY COMMISSION A

.M 1990 N CALIFONIA BLVD q

WALNUT CREEK PLA7.A SUITE 202 m

7.,

WA1.MUT LREEK CA 94596

(

g

/

/~

<x

-/

x.

i

- x 4[ 7 q [ '

OPERATING LICENSE DPR-54 DOCKET MO. 50-312 REPORTABLE OCCURRENCE 81-45 i

In accordance with Technical Specification Apnendix A, Sect ion 4.5.3.1,

" Decay Heat Removal System Leakage j

Acceptance Limit," and Section 6.9.4.2.b,

" Operation in Degraded Mode Allowed by a Limiting Condition for a

I Operation", the Sacramento Municipal Utility District hereby submits a t h I r t y-d r.y report of Reportable Occurrence 81-45.

On August 27, 1981, with the plant shutdown for turbine repair s, the "B"

decay heat pump was discovered to be leaking (0.87 gallons per hour) in excess of the Technical Specification allowable limit (0.62 gallons per hour).

This was discovered by an Auxiliary Operator during performance of his normal shift functions.

The "A" decay heat punp was started, and the "B" pump secured for repairs.

Repairs to the pump will consist of replacement of the pump shaft seals.

This work, for which procedure M.21, " Decay lleat Removal Pumps", was specifIcally written, will be completed prior to the next startup of the reactor.

The j reactor was not affected, nor the shutdown extended by q

c,,

g gj this event.

n., El,

.?^.:

N a

u 0 )t[$b y

f W

ohn Mattimoe O

Assistant Gene ral !!anager and Chief Engineer S

[

/

c. c :

I&E Washington (30)

MIPC (3) 8110050152 810923 RI-NS AC PDR ADOCK 05000312 S

PDR Y S T I M SERVthG MOSE fHAN 600,000 IN THE HEART OF CAtlFORNIA