ML19305C388

Second Interim Deficiency Rept Re Safety Injection Sys Containment Emergency Sump Piping Design.Redesign of Piping Sys in Progress.Final Rept Submitted by 800530 If Alternative Re Anchoring Process Pipe Found Acceptable

ML19305C388
Person / Time
Site:	South Texas
Issue date:	03/19/1980
From:	Eric Turner HOUSTON LIGHTING & POWER CO.
To:
References
ST-HL-AE-431, NUDOCS 8003280479
Download: ML19305C388 (3)

Text

a Y The Light Company s-musce- m uxi7oo a m.wxa,77ooi <7im2s.92ii March 19, 1980 ST-HL-AE-431 SFN: V-0530 Director, Region IV Nuclear Regulatory Corr... sion 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76102

Dear Sir:

South Texas Project Unit 1 & 2 Docket Nos. STN 50-498, STN 50-499 Second Interim Report on the Safety Injection System Piping Deficiency On October 25, 1979, pursuant to 10 CFR 50.55(e), Houston Lighting and Power Company notified your office of a deficiency in the Safety Injection System containment emergency sump piping design. The Interim Report of November 21, 1979, indicated that the final report would be submitted by March 23, 1980.

However, redesign of this piping system is still in progress; therefore, the final report can not be submitted at this time.

One design alternative, to allow the sump liner to accept the projected loads, has been studied and rejected as not being technically feasible. A second alternative, anchoring the process pipe to the guard pipe, is presently being analyzed. If this second alternative is found to be acceptable, a final report will be submitted by May 30, 1980. If the second alternative is not acceptable, a subsequent submittal date will be established as soon as possible.

Further questions should be directed to Mr. S. S. Rodgers, (713) 676-7953.

Very truly yours, 0 . l= - -

E. A. Turner Vice President Power Plant Construction

& Technical Services PLW:bf ho/7 ss

///

80032 so t71

5 i

I h e t Hmston Upq & h Conymy l

l ST-HL-AE 431 Page 2 G. W. Oprea, Jr.

cc: D.G. Barker i C.L. McNeese H.R. Dean

~

R.L. Waldrop G.B. Painter A.J. Granger R.A. Frazar M.D. Schwarz (Baker & Botts)

R. Gordon Gooch (Baker & Botts)

J.R. Newman (Lowenstein, Newman, Reis, Axelrad & Toll) t '6irector Office of Inspection & Enforcement Nuclear Regulatory Commission Washington, D.C. 20055 M.L. Borchelt Executive Vice President Central Power & Light Company P.O. Box 2121 Corpus Christi, Texas 78403 R.L. Hancock Director of Electrical Utilities City of Austin P.O. Box 1088 Austin, Texas 78767 J.B. Poston Assistant General Manager of Operations City Public Service Board P.O. Box 1771 San Antonio, Texas 78296 R.C. Mecke City Public Service Board P.O. Box 1771 San Antonio, Texas 78296 M.C. Nitcholas City of Austin P.O. Box 1088 Austin, Texas 78767 R.L. Range Central Power & Light Company P.O. Box 2121 Corpus Christi. Texas 78403 Charles Bechoefer Esquire Chairman, Atomic Safety & Licensing Board U.S. Nuclear Regulatory Connission Washington, D.C. 20555 2

_ _ _ _ . _ . ~ . _ _ m

Hasen Qpbqg & Pbwa Cmqmgr l l

ST-HL-AE - 431 1 Page 3 Dr. James C. Lamb, III 313 Woodhaven Road Chapel Hill, North Carolina 27514 Dr. Emmeth A. Luebke Atomic Safety & Licensing Commission U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Steven A. Sinkin, Esquire 116 Villita Street San Antonio, Texas 78205 Citizens for Equitable Utilities c/o Ms. Peggy Buchorn Route 1, Box 432 Brazoria, Texas 77422 Richard W. Lowerre, Esquire Assistant Attorney General for the State of Texas P.O. Box 12548 Capitol Station Austin, Texas 78711 Henry J. McGurren, Esquire Hearing Attorney Office of the Executive Legal Director U.S. Nuclear Regulatory Commission Washington, D.C. 20055 l

l l

l l

E

_