ML19317G026
| ML19317G026 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 12/10/1976 |
| From: | Colombo R, Eisenhuth F SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| To: | |
| Shared Package | |
| ML19317F923 | List: |
| References | |
| NUDOCS 8002210729 | |
| Download: ML19317G026 (1) | |
Text
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LICENSEE EVENT REPORT CONTROL BLOCK:e l
l l
l l
l (PLEASE PRINT ALL REQUIRED INFORMATION) 1 8
LCENSE NUMBER Y
Y lClAlRlSlSl'l l 0l 0l-l 0 l 0 l 0 l 0 l0 l-l0 l0 l l 4 l 1 l1 l1 l1l l 0l 3l 1
7 89 14 15 25 26 30 31 32 CATEGORY TYP RC OCOKET NUMBER EVENT DATE REPORT DAld 01 CONT lM lI l l0] W l 0l 5l 0 ',-l 0 l 3 l 1 l 2 l l 0l 5l0 l 5l 7l 6 l l 1l 2l1 l0 l7 l6 l 7 8 57 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION Q l On May 5,1976, a daily grab sample revealed a plant effluent chlorine concentration l
7 89 80 ;
@ l of 0.3 ng/1, in excess of Technical Specification Limit of 0.2 mg/1. Source of l??
7 89 g l chlorine was located and isolated and levels dropped within specification in 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.80l 7 89 80 -
32 l A similar occurrence was reported as "E 74-3 and there have been other instances of l;
7 89 80 Q [ high chlorine releases from other causes.
(UE 76-1) l 7 89 pse4E 80.
E CODE COMPONENT CODE M
VOLATON 3E l W l D l d lP l U l Ml Pl XlI l lAl lCl6l6l5l y
7 89 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION g
av gg l The motor coupling on the sewage sump pump worked loose, causing continuous operation l 7 89
- 80. J 33 l of the motor. The sewr.ge hypochlorite tank operates when the su=p pu=p motor is l
7 89 80 1 l operatina, resulting in excessive chlorination.
l4 ST
% POWER CTHER STATUS OSCOVERY OtSCOVERY DESCRtPTON lGl l0l0l0l l NA l
l Bl l NA l
7 8 9
10 12 13 44 45 48 80 ACTMTV CONTENT RELEASED OF RELEASE l NA
]
l NA l
AMOUNT OF ACTMTV LoCATCN OF RELEASE f
W W
7 8 9
10 11 44 45 BO-PERSONNEL EXPOSURES NUMBER TYPE CESCRIPTON DE l 0l 0l0 l Jl NA l
7 89 11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTON 3[ l0l0l0l l NA l
7 89 11 12 80 OFFSITE CONSEQUENCES gg l Minimal to None l
7 89 80 l
LOSS OR DAMAGE TO FACILITY l
TYPE DESCRrPTON
-l,
@dl NA l
l 7 89 10 ef) l PUBUCITY gg l Local papers notified December 15, 1976.
l a
l 7 89 80
-l i
l ADOTTIONAL FACTORS h
O l NRC Operations Office, Region V, was notified of event. 8 0 0 2 210 /R7 l _
/
9 80 g l Report held pending decision of whether limit was instantaneous or a 24-hour average. l 7 89 eg NAME: R.W. Colombo /F.T. Eisenhuth PHONE:(916) 452-3211 oro ess.esi