ML20004C518

Forwards Summary of 810529 Telcon W/Nrc Re Postulation of Simultaneous Breaks in Safety & Nonsafety Piping.Breaks in Nonsafety Main Steam or Feedwater Lines Are Not Required to Be Postulated Concurrently W/Loca

ML20004C518
Person / Time
Site:	Perry
Issue date:	05/29/1981
From:	Stevens D GILBERT/COMMONWEALTH, INC. (FORMERLY GILBERT ASSOCIAT
To:	Parr O Office of Nuclear Reactor Regulation
References
NUDOCS 8106040204
Download: ML20004C518 (2)

Text

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• {0~ if0 Gilbert / Commonwealth engineers and consuitants 5

' GILBE T ASSOC ATES. NC., 0 Box 1496 eading, PA 19603/Tel 215-775-2600/ Cable Gdasoc/ Telex 836-431

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Mr. Plan Parr - m k.'/.-

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Dear Mr. Parr:

Ihe attached telephone memo contains my understanding of my conversation this morning with yourself and Mr. Jerry Wermeil, concerning interpretation of section B.3 of BTP-APCSB 3-1.

Please advise us of any corrections.

We appreciate your courtesy and helpfulness on this question.

Very truly yours, 1- L D. H. Stevens Nuclear Engineer DHS/lls Attachment cc: P. B. Gudikunst - 2 M. Plica J. P. Sockel M. E. Files - SRP 3.6.1, 2 PY-DIDR-025 Rev. 2

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' - C I L R E R T._' A S S O C I A'T E S. I N C.

. PY-DIDR-025 .Rev. .-2 '

< , TELEPHONE.-AND_' CONFERENCE MEMORANDUM

-DATE' M#Y 29'~1981' H.'Stevens work ORDER No. 044549-180

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. TELEPHONE CAlbb CONF ERENCE Cl-

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.Olan Parr and. Jerry Wermeil

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fCOMPANY:

Postulation of Sim'ltaneous u Breaks.in Safety..and Non-Safety. Piping.

SUBJECT:

NOTES:

-Mr. Parr.and Mr.:Wermeil-confirmed our interpretation of section B.3-

'of BTP-APCSB 3.1,- to the ef fect that breaks in non-safety,. non-seismic piping are not required to be postulated concurrent' with a break in

. safety-related-piping. Specifically, a break in the Perry non-safety rain steam er feedwater lines is not required to be: postulated con-- -

-currently with a'LOCA. With specific reference to Ferry and cencern for the Nil-F020 main steam gate valves and MSIV-leakage control-svstem. Mr. Vermeil stated that the APCSB has accepted statements of the form "... this system is required only for loss-of-coolant accidents, and protection from these breaks outside containment is,

i. therefore, not required."

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D. H. STEVENS DHS/lls ,

cc: O. Parr, USNRC o m , .u s, m - 2 M. Plica J. Socke' M ~. ciles.- SRP 3.6.1, 2 PY-DIDR-025 Rev. 2 i

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