ML19260C129

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Clarifies 791107 Response to NRC Re Steam Generator Water Hammers.No Water Hammer Experience Since Plant 1966 Mod
ML19260C129
Person / Time
Site: Yankee Rowe
Issue date: 12/07/1979
From: Moody D
YANKEE ATOMIC ELECTRIC CO.
To: Ziemann D
Office of Nuclear Reactor Regulation
References
TASK-05-13, TASK-5-13, TASK-RR WYR-79-151, NUDOCS 7912180611
Download: ML19260C129 (1)


Text

Telephono 617 366-9011 Twx UC-390-0739 YANIGE ATOMIC ELECTRIC COMPANY R.2.2.1 7 *~

^*

WYR 79-151

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20 Turnpoke Road Westborough, Massachusetts 01581 L

ANKE" December 7, 1979 United States Nuclear Regulatory Cotsissicn Washington, D.C.

20555 Attention: Office of Nuclear Reactor Regulation Mr. D. L. Ziemann, Chief Operating Reactors Branch #2

References:

(A) License No. DPR-3 (Docket No. 50-29)

(B) USNRC Letter to Yankee Rcwe dated September 12, 1979 (C) YAEC Letter to USNRC dated July 18, 1975 (D) YAEC Letter to USNRC dated November 2,1977 (E) YAEC Letter to USNRC dated Nove=ber 7.1979

Dear Sir:

Subject:

Water Hatter Reference (E) was submitted in response to your letter Reference (B) regarding steam geneaator water ha==er.

Discussions with NRC staff requesting additicnal informatien has prompted us to submit' this clardfication letter.

The intent of our response was to state that the plant has not experienced water ha=er since the 1966 =cdification. TP.s was & cribed to the Ccemissicn in previous letters, References (C) and (D).

In response to Question 5 of Reference (3) we stated that "...There have been relatively few and weak nhr ha=cer occurences".

The term

" water hammer" in this respense was morly chosen and incorrect. What we intended to say was that the plant does experience occaticnal noises which are minor in nature and would be considered typic;.1 of any power plant whether nuclear er fossil.

We trust this clarificatien adequately addresses yo ar concerns; however, if you should desire additional information, please centact. us.

Very truly yours,

\\

YANKEE ATOMIC ELECTR::C COMPANY 0$fQ

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3.CwM A

e D. E. Moody Manager of Cperatieno BLD/d=p 1614 309 79121 80 80

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