ML19317G107
| ML19317G107 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 04/15/1976 |
| From: | Colombo R, Eisenhuth F SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| To: | |
| Shared Package | |
| ML19317G103 | List: |
| References | |
| NUDOCS 8002210797 | |
| Download: ML19317G107 (1) | |
Text
. _.,
UCENSEE EVENT REPORT CONTROL ELOL..t l
l l l l
l (PLEASE PRINT ALL REQUIRED INFORMATION)
O S"Jf' "E#'
We' uCENsE NuMoER O1 l cI Al Rl Sl Sl1 l l 0 l 0 l-l 0l 0l0 l 0 l 0 l-l 0l 0l l4l1 l1l1l1l l0l1l 7 d0 14 15 25 26 30 31 32
"'Yy foe c4TEcoRY T
coCxET NUMBER EVENT DATE REPORT DATE O 1 CON'T l p l 1l J lL l l 0 l 5 l 0l-l 0l 3l 1l 2l l 0 l 4 l 0l 5l 7l 6l l0 l 4 lll 5l 7l 6l 7.
8 57 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION HE lOn April 5,1976, a calibration check was made on tihe RPS pressure transmitters. All l 7 89 60.
EE If ur transmitters were found to have drif ted beyond their required acc.uracy; a low lg 7 89 80 gg l pressure reactor trip would not have occurred at the specified setpoint. Two previous l 7 89 80 UE.l occurrences of this type have been reported.
(R0 76-4) l-7 89 80 -
@I I_
7 89 e0 :
YEo'E So"Os' couPoNENT CODE ACR R VoLATCN O
lI l A l J l Il Nl SlT l R jU l l Nl l Wl 1l2 l0 l lYl 7 89 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION Q lThe four Veritrak Products Model 59 PR 443-7050 pressure transmitters experienced l
7 89 80.
DIE ldrif t causing three to read low and one high, all outside of specifications. RCS l-7 89 80 EE loressure trin setroints will be set 10 osi more conservative.
l' FAC4JTV METHOD OF STATUS
% POWER OTHER STATUS OGCOVERY OSCOVERY DESCRIPTCN
[GJ l0l0l0l l NA l
lCl l
NA l
7 8 9
10 12 13 44 45 46 80 0
0F E ASE AMOUNT OF ACTNITY LOCATON OF RELEASE BE Izl LzJ l
NA l
l NA U
l 7 8 9
10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTON i
la l 010]
Lzj l
NA l
7 89 11 12 13 80 PERSONNEL INJUAIES NUMBER CESCRIPT;CN
]E l0l0l0l NA l
7 89 11 80 OFFSITE CONSEQUENCES
]E l l~
4A 7 89 80 - -.
LOSS OR DAMAGE TO FAC:UTY TYPE DESCRiPTON g] y l
NA l'-
7 89 10 80 PUBUCITY RE l Sacramento Union and Sacrattento Bee notified April 8,1976.
l 7 89 80
ADDITIONAL FACTORS N
l The drif t was discovered by a biweekly check of the transmitters for drif t, which willl 00 80 -
be continued. Reactor vendor and NRC discussing possibility of permittin;; more
!Inserwent error in the RPS orossure trio setpoints.
l 7 89 eo NAME: R.W. Colombo /F.T.Eisenhuth E.(916) 452-3211 p
goozal 777
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