ML20205G340
| ML20205G340 | |
| Person / Time | |
|---|---|
| Site: | McGuire  |
| Issue date: | 10/24/1988 |
| From: | Tucker H DUKE POWER CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| NUDOCS 8810280237 | |
| Download: ML20205G340 (4) | |
Text
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- Duke her Company Hu B Tasa 70 Bax11198 bice President Charlotte, N C 28242 -
Nuclear ProJuction (104)1734S31
'DUKEPOWER October 24, 1988 U.S. Nuclear Regulatory Conmission ATITNTION: Doctanent (bntrol Desk Washington, DC 20555
Subject:
McGuire Phaclear Station, thit 1 Docket No. 50-369 Techrtical Specification 3.7.14.a and 6.9.2 Special Report Gentlanen:
Pursuant to Technical Specification (T.S.) 6.9.2 as specified by T.S.
3.7.14.a find attached a special report concerning inoperability of the Standby shutdown Facility on Septaber 16, 1988.
Should there be any quescions concerning this matter, please ecntact S.E. IeBoy at (704) 373-6233.
Very truly yours, JR1:4
,c Hal B. Tucker SII/353/mnf xc: Dr. J. Nelson Grace Mr. P.K. Van Doorn Regional Mministrator NRC Nsident Inspector U.S. Nuclear Regulatory Conmission tbGuire !bclear Station Region II 101 Marietta St., PM, Suite 2900 Itao Records Cbnter Atlanta, Gcorgia 30323 Suite 1500 1100 circle 75 Parkway Mr. Darl Ibod Atlanta, Georgia 30339 Office of Nuclear Nactor Ibgulation U.S. Nuclear Ngulatory Ommission MishinJton, DC 20555 h
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a Document Control Desk 0:tcber 24, 1988 Page 2 bxc P.M. Abraham B.W. Bline D.R. Bradshaw R.M. Dulin II.E. Edwards R.C. Mitrell R.M. Glover (CNS)
G.W. Ihllman C.L. Ihrlin (CNS)
A.D. Ihrrington (PSD)
J.J. Maher R.P. R1th (FUS)
A.R. Sipo (FNS)
R.O. Sharpe (FNS)
J.E. 'Ihatns V.D. 'Atrner R.L. Weber m Tech. Services imC Coordinator (II 12/55)
S.S. Kilborn (W)
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R.L. Gill S.A. Gewehr P.B. Nardoci MC-815-04 (23)
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Documerit Control Desk October 24, 1988 ATDOfGNT 1 Duke Power Orpany McGuire Nuclear Station Stan&y Shutdown Facility Inoperability Technical Specification 3.7.14.a special Report 4
On Septaber 16,1988 at 1835, the Stancby Simtdown Facility (SSP) ms declared inoperable when the transfer canal was isolated and drained utilizing the wir gate. h fuel transfer tube was also drained; thus, a flew path frm the spent fuel pool to the suction of the standby makeup punp was not available, and exceeded the seven day allowance of 'Ibchnical Specification (TS) Action Statment 3.7.14.a.
h drain doim was for periodic maintenance of the fuel transfer syste, "he manipulator crane mast, and for an investigation into why the transfer syste ha.:
sufficient friction to cmmonly trip the torque overload switches en the prine mover.
On Septaber 22, 1988, Special Order 88-13 (Reference Attac1 ment 2) was issued to enhance availability of the spent fuel pool as a supply to the stanby makeup pmp.
It should be noted that in a total blackout situation, the availability of the spent fuel pool as a supply is empletely passive, relying solely csn deflation of the wir gate coals. With the seals deflated, the transfer canal and the transfer tube will rapidly flood (within minutes).
By Septaber 29, 1988, all periodic maintenance and repairs in the canal had been crmpleted, the canal and transfer tube flooded to nomal spent fuel pool level, and the ST declaral operable.
Document Control Desk 7 October'24, 1988 Duke Power Company McGuire Nuclear Station Operations' Special Order # 88-13 Operation of SSF Standby transfer._
mak<tiip pump canal drained Applicable to Unit (s):
X One Approved by:
Two Yasue Date:
(,4/f2Afa Whenever it becomes necessary to sucolv NC oumna semin with the SSF Standy-by makeuo oumo while the SFP tranafar ennal fa drained.
Do 'A' or 'B' in neeuence listed ('As has nenfarance).
(A)
No unit blackoue ennditinna (1.) Open or verify anan 1EF-172 (2.) Verifv all narannnel elear nf Prmnsfer emnm1 anA Abnanea of Innaa mmPay(m1 A dahrte in ennal (3 ) Stare Incal mien en P emn a Fa r uneme Fen = anane fuel non1 Po Prmnefer emnm1 (4.) Lift uh(Ps Pie (1 RMYn.7&P (ffi.CCP niinni anA einem b ra sk a r.
(9.) en Pn op /n /1/ A100 /17 (AnmemPfan af R4F1 (B) Unit blackout conditions (1.) Open or verify open 1KF-122 (2.) Verify all personnel clear of transfer canal and absence pf loose material & debris in canal (3.) Lif t red tag and close ivI-304 (VI air to wet.r-gate seals) to deflate seals - verify seals deflated and water entering transfer canal (4.) Lift white tag G SMXG-F4F (U1-SSF pump) and,close breaker (5.) Go to OP/0/A/6100/17 (Operation of SSF)