ML20009F540
| ML20009F540 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 07/02/1981 |
| From: | Nix R GEORGIA POWER CO. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML20009F537 | List: |
| References | |
| LER-81-053-03L, LER-81-53-3L, NUDOCS 8107310283 | |
| Download: ML20009F540 (2) | |
Text
U. S. NUCLEAR REGULATO?.Y COMMif,SION NRC FORM 366 (7 77)
. LICENSEE EVENT REPORT (PLEASE I 41NT OR TYPE ALL REQUIRED FWORMATION)
CONTROL BLOCK: l l l l l l lh e
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7 8 9 LICENSEE CODE 14 15 LICENSE NUMtlE n CON'T IoI11 3E l L j@l 01 S l 0 l 01 01 3 l 6 I 686 l@l 69 016 l 1 1 1 l 8 l 1 75l@l0171Ol218Il EVENT OATE 74 REPORT DATE 80 l@
/ 8 60 61 OOCKET NUMBER EVENT DESCRIPTION AND PnOBABLE CONSEQUENCES h ITTTI L With the plant in steady state operation at 1927 MWt and while performina I iO i3i l HNP-2-5279, Barksdale Pressure Switch Calibration, 2C71-N003A,B and C, l I o 141 l Turbine First State Pressure, Permissive Switches, were found out of tol- l lO isi l erance. Tech Specs Table 3.3.1-1, Item 9, requires actuation at 160 psig l 10181 l +12 psig head correction. Plant operation nor the health and safety of I l0l7j I the public was affected. This is a non-repetitive event. I I
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44 47 CAUSE DESCRIPTION AND COARECTIVE ACTIONS h The cause of this event has been attributed to setonint drift. The l l i 10 l l I
I1 liI I switches were recalibrated oer HNP-2-5279 Barksdale Pressure Switch I li12i 1 Calibration, and functionally tested successfully oer HNP-2-3010. I I
ml Turbine First Staae Pressure Permi,ssive Functional Test and Calibration. I I
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/
e LER No.: 50-366/1981-053 Licensee: Georgia Power Company Facility: Edwin I. Hatch Docket No. : 50-366 Narrative Report for LER 50-366/1981-053 On June 11, 1981, while the plant was in steady state operation at 1927 MWt and while performing HNP-2-5279, Barksdale Pressure Switch Calibration, 2C71-N003 A,B and C, Turbine First Stage Pressure Permissive Switches, were found out of tolerance. Switch 2C71-N003D was found to be operable and actuating within expected tolerance. Tech Specs Table 3.3.1-1, Item 9, requires actuation at 160 psig + 12 psig head correction. Plant operation nor the health and safety of the public was affected by this event. This is a non-repetitive event.
The cause of this event has been attributed to setpoint drift.. The switches was recalibrated per HNP-2-5279, Barksdale Pressure Switch Calibration, and functionally tested successfully per HNP-2-3010, Turbine First Stage Pressure Permissive Functional Test and Calibration, and returned to service.
Unit I uses the same type switch -for this application. A generic review revealed no inherent problems.
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