ML20204B986

Forwards Rev 5 to Component Cooling Water Pump Logic Diagram.Physical Mods to Circuits Complete & Logic Drawing Revised Accordingly.W/One Oversize Drawing

ML20204B986
Person / Time
Site:	South Texas
Issue date:	03/19/1987
From:	Wisenburg M HOUSTON LIGHTING & POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20204B989	List: ML20204B986 ST-HL-AE-1983, Component Cooling Water Pumps Logic Diagram System:Cc
References
ST-HL-AE-1983, NUDOCS 8703250190
Download: ML20204B986 (3)

Text

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The Light Company ii,>usm u iioux x & i>- m i m i m m>us m . i m m i gi m . n ii March 19, 1987 ST-HL-AE-1983 File No.: G9.17, G12.227 10CFR50 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555 South Texas Project Units 1 and 2 Docket Nos. STN 50-498, STN 50-499 Revision to the Component Cooling Water Pump Logic Diagram

References:

A. Responses to NRC staff questions regarding review of the Component Cooling Water Pump Logic Diagrams, M. R. Wisenburg, HL&P Letter to Vincent S. Noonan, NRC; dated December 9, 1986; ST-HL-AE-1840.

B. Revised Final Report Concerning Potential Failure of Non-Seismic CCW Tank Level and Flow Switches, J. H. Goldberg, HL&P Letter to Robert D. Martin, NRC; dated July 22, 1986; l ST-HL-AE-1691 1

The non-Class lE to Class lE interface within the Component Cooling Water

.(CCW) pump control circuits was discussed during a meeting with the NRC staff l on March 10, 1987. References A and B indicated that the non-Class lE components were being removed from the CCW pump control circuits. Reference A indicated that the design changes had been issued through the project's l configuration management program and the drawings would be revised when implementation was complete.

The physical modifications to these circuits have been completed and the logic drawing has been revised accordingly. A copy of Revision 5 to the CCW pump logic diagram is attached for your information.

8703250190 870319 PDR yth l

A ADOCK 05000498 s PDR [ g Ll/NRC/ch (e.5

r Houston Light ng & P wer Company ST-HL-AE-1983 File No.: G9.17, C12.227 Page 2 If you should have any questions on this matter, please contact Mr.

M. E. Powell at (713) 993-1328.

I w

M. R. Wis.pnburg Deputy Prdject Man er THC/yd

Attachment:

Component Cooling Water Pump Logic Diagram, Drawing No. 5R209Z42040, Rev. 5 i

Ll/NRC/ch

. ST-HL-AE-1983

? Filo Ns.: G9.17, C12.227 Houston Lightmg k Power Company Page 3 cc:

Regional Administrator, Region IV M.B. Lee /J.E. Malaski Nuclear Regulatory Commission City of Austin 611 Ryan Plaza Drive, Suite 1000 P.O. Box 1088 Arlington, TX 76011 Austin, TX 78767-8814 N. Prasad Kadambi, Project Manager M.T. Hardt/A. von Rosenberg U.S. Nuclear Regulatory Commission City Public Service Board 7920 Norfolk Avenue P.O. Box 1771 Bethesda, MD 20814' San Antonio, TX 78296 Robert L. Perch, Project Manager Advisory Committee on Reactor Safeguards U.S. Nuclear Regulatory Commission U.S. Nuclear Regulatory Commission 7920 Norfolk Avenue 1717 H Street Bethesda, MD 20814 Washington, DC 20555 Dan R. Carpenter Senior Resident Inspector / Operations c/o U.S. Nuclear Regulatory Commission P.O. Box 910 Bay City, TX 77414 Claude E. Johnson Senior Resident Inspector /STP c/o U.S. Nuclear Regulatory

-Commission -

P.O. Box 910 o Bay City, TX 77414 IM M.D. Schwarz, Jr., E2 quire M Baker & Botts b s p. d One Shell Plaza Houston, TX 77002 pg J.R. Newman, Esquire 1 bM$

Newman & Holtzinger, P.C.

1615 L Street, N.W.

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Washington, DC 20036 T.V. Shockley/R.L. Range h '

Central Power & Light Company P. O. Box 2121

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• Corpus Christi, TX 78403 k I .

l Ll/NRC/ch Revised 2/3/87 l

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OVERSIZE DOCUMENT ,

PAGE PULLED i

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SEE APERTURE CARDS NUMBER OF OVERSIZE PAGES FILMED ON APERTURE CARDS APERTURE CARD /HARD COPY AVAILABLE FROM RECORD SERVICES BRANCH,TIDC FTS 492-8989 D

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