ML20084T906
| ML20084T906 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 09/30/1976 |
| From: | Fox H TENNESSEE VALLEY AUTHORITY |
| To: | Moseley N NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML20084T908 | List: |
| References | |
| LER-BFRO-50-259-761, NUDOCS 8306240260 | |
| Download: ML20084T906 (2) | |
Text
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D" O LICENSEE EVENT REPORg CONTROL' SLOCK:l l
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[pLEASE PRINT ALL REQUIRED INF RMATION) 1 6
TV LCENSE NUMBER E lA!1,!B!R!Fl1l l Ol 0l-l0 l0 l 0 l 0 l 0 l~l 0l 0 l l 4l 1l1l 1l fl l0l1l NAM 7 il 9 14 15 25 26 30 31 32 CATEGORY T E DOCKET NUMBER EVENT OATE REPORT OATE 01 cDN'T l__
l l W W l 0l 5l 01-l0 l2 l5 l9 l l0l9l2l1l7l6l l
l l
l l
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78 57 58 53 60 61 68 69 74 75 80 EVENT DESCRIPTION l
@ l HPCI tripped during testing due to a leaking rupture disc located on the steam dis-SO 9@ l charge line. Following the HPCI trip. the RCIC failed the required surveillance l
7 89
'7 09 80 l
due to a altiopi ah envernor.
Donctor chutdown was initiated and nressure h.! emet 7 89 60 92 l reduced to less than 100 psi.
(BFRO-50-259/7615) l 80 7 -89 1
@l a0 M
VOLATON E
C DE COMPONENT CCCE O7 l Cl Jl W lX lX lX l Xl Xl XI y
l Xl 9l 9l 9l lYl 7 89 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION The l
@ l The HPCI rupture disc cracked as a result of alternating pressure and vacuum.
7 89 l
h l Woodward Governor EG-R on the RCIC malfunctioned.
SG 7
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bl STA 3
% POWER OTHER STATUS O SCOVERY OSCOvinY OESCRCTON E
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l Lal I Control Room innunciation I
80 7 8 9
10 12 13 44 45 46 ELE EO OF L ASE AMOUNT OF ACTMTV LOCATON OF RE6 EASE DE Laj LaJ l
m I
i wA I
80 7 8 3
10 11 44 45 PERSONNEL EXPOSURES NUMBER TYPE OCSCR4PTON I
H 10l 01 01 LaJ l
m 7 89 11 12 13 80 PERSONNEL INJUR;ES MD 9t1ER
- DESCRPTON l
H l 0101 0l 1
m 80 7 89 11 12 OFFSITE CONSEQUENCES DE I m
80 7 89 LOSS OR OAMAGE TO FACluTY l
- M PE CESCR* TON 8 I al I
m 80 7 8 9306240260 760930 PU8uCITY,
PDR ADOCK 05000259 l
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PDR g
00 y-gg ADDIT!ONAL FACTORS A new Woodward l
- @ lA new rupture disc with a vacuum support was _ installed on the.HPCI.
80 7:.09-
'h.he,rnorEG-RwasinstalledontheRCIC. Both operated satisfactorily following repairs.]
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- 7'89
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9 TENNESSEE VALLEY AUTHORITY J
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c CHATTANOOGA. TENNESSEE 37401
///6-19 8 4
Septetber.30, 1976 g
rec $vE0*
9 OCT 5 1976 4
Mr. Non.an C. Moacley, Director U.S. Nuclear Ec D tory Couaission
- i 58 M P O 4MI Mus D
office of Inapection and Enforecx.nt Rocion II d7 6
230 Feachtroo Stroct, IET., 8th Floor II 01 Atlanta, Goorgia 30303 Dear Mr. Moseleb TZtilIESE VAILEY AUTIIORITY - BROLTIE FERY NUCIIAR FIANT LEZIT 1 -
DOCET H0 50-253 - FACTTT'" nWPATHIG LICCGE DPR REPORTABLE OCCURRaK:ERCEORTB7E0f259/7&
The enclosed report is to provido details concerning the HPCI that tripped during testing due to a lonHng rupture disc located on the stcaa dischargo line. L'ollowing the HFCI trip, the ICIC failed the required curveillance test due to a slucJish governor. Tais report in sub::.itted in accordance with Brcr. ins Ferry Technical SI.ccifications Section 6.
'fnia cycnt occurred on Browna Ferry Nnninnv Plant unit 1.
Very truly yours, TENESSE VALIEY AUIHORITY E. S. Fox Director of Power Freduction D
Enclosure (3)
CC (Enclosuro):
Director (3)
Office of Manacecent Inforation and Program Control U.S. Nuclear Regulatory Cor.uission i
Washington, D.C.
20555 THvoeter(40)/
4 Office of Inapection and Ihforcecent U.S. Nuclear Regulatory Cox.ission washincton, D.C.
20555 l
E f
COPY SENT REGION k_
@fl2 An Equal Opportunit,r Employer
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