ML18283B458
| ML18283B458 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 10/19/1976 |
| From: | Fox H Tennessee Valley Authority |
| To: | Moseley N NRC/IE, NRC/RGN-II |
| References | |
| Download: ML18283B458 (6) | |
Text
U.S, NUCLEAflREOULATORV ~
'lMISSION NI3C FORM "I95 I2. III)
NRC DISTRIBUTION FoR PART 60 DOCKET MATERIAL DOCKET NUMBER 50-296 FII.E NUMBER INCIDEITY REPORT
+(LETTER 0 OR IGINAL PfCOP V DESCRIPTION 0 NO TO R IZ E 0 UNCLASSIFIED Hr. Norman C. Moseley PROP INPUT FORM ENCLOSURE FROM:
Tennessee Valley Authori.ty Chattanooga, Tennessee H, S, Fox DATE OF DOCUMENT 10/19/76 DATE RLCEIVEO 10/21I/76 NUMBER OF COPILS RECEIVED I
none signed I,
Ltr. trans the following:
'CKNOW EDGE13
~
Licensee Event Report (RO 50-296/7613) on 9/20/76 concerni,ng the main steamline D flow indicator FI-46-4 and differential pressure indicatin'g switches Pdis-1-50 (AD) being found unresponsive to s'teamf low duri,ng startup testing at. 270 Mfe.
DO NOT RZMOVE PLANT NAME'rown Ferry Unit ($3 (1-P)
(1-P)
NOTE: 'F PERSONNEL EXPOSUHE IS INVOLVED
, SEND DIRECTLY TO KREGER/J..COLLINS HRANCH CIIIW:
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Knie1 Lee FOR ACTION/INFORMATION 10 22 76 RJ FI NRC PDR INTERNALDISTRIBUTI N SCHROEDER IPPOLITO HOUSTON'OVAK CHECK CASE EEANAUER TEDESCO MACCARY EISENHUT SHAO VOLLMER HUNCH KREGER J.COLLINS LPDRI Athens Ala.
VTC'fGXC:
EXTERNALDISTRIBUTION CONTROL NUMIIER rodZ/
NRC I'OIIM IOS I2 7II)
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October 19, 1976 Mr. Norman C. Moseley, Director U.S. Nuclear Regulatory Cotaxaissio Office of Inspection and Enforcenen Region II 230 Peachtrce
- Street, NP>> Sth Ploor Atlanta, Georgia 30303 TENN SEE VALLEYAUTHORITY Dear Mr. Moseley!
TENNESSEE VALLEYAUTHORITY = BROMNS PERRY NUCLEAR PLAÃZ UNIT 3 DOCKET NO.'0-296 - FACILITY OPERATING LICENSE DPR REPORTABLE OCCURRENCE REPORT BPRO-50-296/7615 1
The qxiclosed report is to provide details concerning the main steamline D
glom'ndicator PI-46-4 and differential pressure indicating mdtches Pdis-1-50 (A-D) that vere found unresponsive to stcamflo~r during startup testing at 270 Mga.
This report is submitted in accordance with Brooms Perry Technical Specifications Section 6.
This event occurred on Browne Perry Nuclear Plant unit 3.
Very truly yours, TENNESSEE VALLEY AUTHORITY H. S, Pox Director of PoUer Production Enclosure (3)
CC (Enclosure);
Director (3)
Office of Management Information and Program Contxol U.S> Nuclear Regul tory Coamission washington, D,C.
0955 Director 40 Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Uashington, D.C.
20555 An Equal Opportunity Employer
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LICENSEE NAVE UO1 A
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89 14 (PLEASE PRINT ALLREQUITIED'INFORMATION)
LICENSE NUMSEA 0
0 0 0
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15 25 26 LICENSE TYPE EVENT TYPE 30 31 32 LIASEE EVENT RE> ORT
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AEPOAT RCPORT CAlfOOAY 1YPF SOURCE OOCKET NUMDCA EVENT OATE
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5 0 0 2
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8 57 58 59 60 61 68 69 74 75 AEPOAT OATE 8I FI Qo7 7
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8 Qoo3 EVENT OESCRIPTION
[ Durin startu testin at 270 NNe ma 9Ldifferential ressure indicatin sw tc 9
Lsteam flow.
As a result "D" main steam line was isolat d
9 twere reversed at panel 25-56 to resolve robins and subse uent 9steam flow was confirmed.
BFR0>>50-2 6
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SYSTEM CAUSE COOE COOE COMPONENT COOE
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10 11 12 17 43 CaUSE OESCRIPTION Low pressure sensin line 84 was switched PAME COMPONENT SUPPUEA COMPONENT MANUFACTUREA B
0 8
0 48 47 44 9)recirculation jet pum riser low ressure sensin line 6
9 FACILITY loZ L0~26 9
10 12 13 FOAM OF ACTIVITY CONTENT AELEASEO OF AFIEASG AMOUNT OF ACTIVITY zJ tJz NA 0
10 11 I'ERSONNEL EXPOSURES 9
11 1P.
13 PERSONNEL INJURIES I:UMSEA OESCAiPFION
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9 11 12 IsIETHOO OF OISCOVEAY OISCOVEAY OESCAIPTION Review of survei d
OTIIEA S'TATUS NA 44 45 46 LOCATION OF RELEASE NA 44 45 NA OFFSITL'ONSEQUENCES 9
Loss OR OAMAGE TO FACILITY TYPF OESCA,PTION L
IILIBLICITY 80 80 80 80 80 80 80 80 80 K~I L aooIRQNIAL FacTQRs g)8
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See attachment.
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BFRO-50-296/7613 (Continued)
Additional Factors All others similar instrument NA lines were checked and found correctly installed.
The LPCI logic was not made inoperable due to the lines been reversed.
Two parallel sets of contacts in each loop provide redundancy.