ML20031E305
| ML20031E305 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 10/06/1981 |
| From: | Nix R GEORGIA POWER CO. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML20031E298 | List: |
| References | |
| NUDOCS 8110150358 | |
| Download: ML20031E305 (2) | |
Text
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60 61 DOCKET NUMSER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION ANo PROF ABLE CONSEQUENCES h.
10I21l With the plant in hot shutdown. 2B21'-N301E'.H and K. Safety Relief Valve l
Position Secondary Indicator Pressure Switches, were found to acttste at f
l0 i3i l l 014 l l 26,14.4 and 25.6 psig respectively.
Tech Specs Section 4.4-2, Item b, I
i O i s l' I requires' actuation at 20 +/-5'psig. Redundant secon'da'ry position indicator i
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1O is 1 I 2B21-R614 was operable.
plant operation or public health and safety was 1
not affected by this event. This is a repetitive event as last reported.
l l0l7]l on Reportable Occurrence Report'No.'50'-366/1979-009.
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33 34 35 36 31 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h li [O I I The cause of this event has been attributed to setpoint drift.
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switches were recalibrated then functionally tested successfully and I
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-returned to. service..
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NAME OF PREPARER PDR ADOCK 05000366 S
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LER No. :
50-366/1981-095 Licensee:
Georgia Power Company Facility:
Edwin I. Hatch Docket. No :, 50-366 s
Narrative Report for LER 50,366/1981-095.
With the plant in hot shutdown, 2B21-N301E, H and K, Safety Relief Valve Position Secondary Indicator Pressure switches, were found to actuata at
. psig.14.4. psig.and 25.6..psig. respecttvely... Tect). Specs.Saction.4..h2,..
Item b, requires actuation.at 20 +/-5 psig.
Redundant secondary position.
indicator, 2B21-R614, was operable. ' Plant operation or'the public's health a.nd~ safety. was not,a.ffec.ted. :This',is' a repetitive' event as.last reported, '
on Reportable Occ' rrence Report' Nb. 50-366/1979'009.
~
- u The cause of this event has been attributed'to setpoint drift. The switch'es' were recalibrated per HNP-2-5240, Static-0-Ring Pressure Switch Calibration, thek function'a'lly tested and returned to service.
Unit I uses the same type pressure switches for this application; however, a generic review revealed no inherent problems.
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