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               $A S              % POWER                      OTHER STATUS                DIS O RY                            DISCOVERY DESCRIPTION I115 I W@ l 0 l 816 l@l                                          NA                  l    lBl@l                Inservice. Inspe: tion                                    1 ACTIVITY CO TENT AMOUNT OF ACTIVITY                                                      LOCATION OF RELEASE RELEASE l
               $A S              % POWER                      OTHER STATUS                DIS O RY                            DISCOVERY DESCRIPTION I115 I W@ l 0 l 816 l@l                                          NA                  l    lBl@l                Inservice. Inspe: tion                                    1 ACTIVITY CO TENT AMOUNT OF ACTIVITY                                                      LOCATION OF RELEASE RELEASE l
[1.,J.6.J l Zj @D OF RELEASE NA                              l Z.j@l                  l.        l                            NA PERSONNEL EXPOS ES NUMBER            TYPE          DESCRIPTION I117 l l Ol Ol0 l@l_Zj@l                                                          NA                                                                                      l PERSONNEL NJU IES NUM8ER            DESCRIPTION NA                                                                                      l 11 la l I Ol Ol Ol@l12                                                                                                                                                  80 7      8 9                11 LOSS OF OR DAMAG TO FACILITY I
[1.,J.6.J l Zj @D OF RELEASE NA                              l Z.j@l                  l.        l                            NA PERSONNEL EXPOS ES NUMBER            TYPE          DESCRIPTION I117 l l Ol Ol0 l@l_Zj@l                                                          NA                                                                                      l PERSONNEL NJU IES NUM8ER            DESCRIPTION NA                                                                                      l 11 la l I Ol Ol Ol@l12                                                                                                                                                  80 7      8 9                11 LOSS OF OR DAMAG TO FACILITY I
1 9      (_2j@l                                                              NA 80 7      8 9            to                                                          8107210405 910709                                                NRC USE ONLY DR ADOCK 05000366 ISSu        OE CRIPTION @                                                                            PDR                            [[;;;gl;;; ; ; l7 1.3 l oJ LSe81          10 1, ,,                                                  ,
1 9      (_2j@l                                                              NA 80 7      8 9            to                                                          8107210405 910709                                                NRC USE ONLY DR ADOCK 05000366 ISSu        OE CRIPTION @                                                                            PDR                            ((;;;gl;;; ; ; l7 1.3 l oJ LSe81          10 1, ,,                                                  ,
68 69                          80 5
68 69                          80 5
.7        #1 3
.7        #1 3

Revision as of 12:03, 15 March 2020

LER 81-059/03L-0:on 810622,defective Transmitter 2T48-N0101A Discovered in post-accident Torus Water Level Indicator 2T48-R622A During Testing.Caused by Low Fluid Level in Ref Leg Sensing Line.Line Backfilled
ML20009C729
Person / Time
Site: Hatch Southern Nuclear icon.png
Issue date: 07/09/1981
From:
GEORGIA POWER CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20009C724 List:
References
LER-81-059-03L-01, LER-81-59-3L-1, NUDOCS 8107210405
Download: ML20009C729 (2)
v • d • e


Text

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NRC FOZM 366 U. S. NUCLEAR REGULATCRY COMMISSION

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EVENT DESCRIPTION AND PROBA8LE CONSEQUENCES h 10 l21 l While coeratina at 210R MWt HNP-2-10RO. Surveillanco C h o c k <: . wat ner- I lo ia l I formed. This procedure revealed a defective transmitter 2T48-N0101A in I

.lo 141 I the ocstaccident torus water level indicator 2T48-R622A. Plant operationl lo is t I was not affected as a result of this event. The health and safety of I lo is] I the oublic was not affected. This is a nonrecetitive event. A ceneric 1 10171 I review revaaled that Unit 1 uses a different tvoe of indicator. I e

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l i 101 1 Th e cause of this event has been a tt ri b ute[i to low fluid level in the 11 111 I reference lea sensino line. MR 2-R1-9793 was w ri tt en tn backfill the I u_ilj1 low sensino line on the t; ansmitter. The indicator was declared ooera- I W ltive and returned to service. I l

Li 1.4 ] I 80 7 8 9

$A S  % POWER OTHER STATUS DIS O RY DISCOVERY DESCRIPTION I115 I W@ l 0 l 816 l@l NA l lBl@l Inservice. Inspe: tion 1 ACTIVITY CO TENT AMOUNT OF ACTIVITY LOCATION OF RELEASE RELEASE l

[1.,J.6.J l Zj @D OF RELEASE NA l Z.j@l l. l NA PERSONNEL EXPOS ES NUMBER TYPE DESCRIPTION I117 l l Ol Ol0 l@l_Zj@l NA l PERSONNEL NJU IES NUM8ER DESCRIPTION NA l 11 la l I Ol Ol Ol@l12 80 7 8 9 11 LOSS OF OR DAMAG TO FACILITY I

1 9 (_2j@l NA 80 7 8 9 to 8107210405 910709 NRC USE ONLY DR ADOCK 05000366 ISSu OE CRIPTION @ PDR ((;;;gl;;; ; ; l7 1.3 l oJ LSe81 10 1, ,, ,

68 69 80 5

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O LER #: 50-366/1981-059 Licensee: Georgia Power Company Facility Name: Edwin I. Hatch Docket #: 50-366 Narrative Report for LER 50-366/1981-059 On 6-22-81, while oper.ating at 86% power, HNP-2-1050, Daily Channel Surveillance Checks, was performed. This procedure revealed that the postaccident torus water level indicator 2T48-R622A was reading approximately 25 inches higher than the redundant indicator 2T48-R622B. The indicator was declared inoperative per Tech Specs section 3.3.6.4.a. This is a nonrepetitive event. The cause of this event has been attrib-uted to low fluid level in the reference leg sensing line. MR 2-81-2723 was written to backfill the low sensing line on transmitter 2T48-N0101A. The indicator was declared operative and returned to service.

Plant operation was not affected as a result of this event.

The health and safety of the public was not affected. A generic review revealed that Unit 1 uses a different type of indicator.

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