ML19275A505

Responds to IE Bulletin 79-15, Deep Draft Pump Deficiencies. Pumps Are Not Yet Installed

ML19275A505
Person / Time
Site:	Millstone
Issue date:	09/07/1979
From:	Counsil W NORTHEAST UTILITIES
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
AEC-MP3-192, NUDOCS 7910040566
Download: ML19275A505 (2)

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crwam HARTFORD CONNECTICUT 06101 (203) 66649II k k J U Ns e c waU wtLUAM G. COUNSIL VCE PRESIDENT NUCLEAR ENGINEERING AND OPERATIONS September 7, 1979 United States Nuclear Regulatory Comission Office of Inspection and Enforcement Region I 631 Park Avenue King of Prussia, Pennsylvania 19496 ATTN: Mr. B. H. Grier, Director Docket No. 50-423 AEC-MP3-192 Gentlemen:

SUBJECT:

Millstone Unit No. 3 LE. Bulletin No. 79-15

Reference:

(1) B. H. Grier letter to W. G. Counsil dated July 11, 1979.

Reference (1) transmitted the subject I.E. Bulletin to Northeast Nuclear Energy Company requesting appropriate action. As a holder of a construction permit, the Applicant need only respond to the first group of six questions. The information requested by Questions 1, 2 and 3 is as shown on the attached table. The Applicant cannot respond to Questions 4, 5 and 6 since the pumps are not yet installed, and have not generated any start-up or operational data. Preoperational ECCS pump testing is currently scheduled for August 1983 at the earliest. Responses to the latter questions will be provided af ter that date.

Very truly yours, NORTHEAST NUCLEAR ENERGY COMPANY 7' r l /

, s ' ,/ o

////'/ i/). ,

William G. Counsil

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Vice President Nuclear Engineering & Operations Attachment cc: Nuclear Regulatory Commission

• Offlce of Inspection and Enforcement ,

t1n1 nn1 Division of Reactor Operations Inspection y.IiUi UUI Washington, D. C. 20555 1910 040 fgg 4

s NRC I.E. BULLETIN 79-15 SAFETY-RELATED DEEP DRAFT PUMPS MILLSTONE NUCLEAR POWER STATION - UNIT 3 Capacity No. of Deep Flow (gpm)/ Plant Overall Pump Draft Pumps !bnu f ac turer Model llead (ft) .* pplication Dimensions ,

1. 4 - Service Water Pumps,  !!ayward-Tyler 24VSN 15000/120 Service rblumn Leneth( /O.D /40zzle 3 SUP*PlA/B/C/D Water (Figure 1) (Sea 29'-9 1/16"/25"/30" Water)

2. 4 - Containment Bingham-Willamette 10X12X20BR-VR 3950/342 contain- a) Fuction u ell Recirculation Pumps (5 Stage) ment Lenethl2)/0.D./ Nozzle -

3RSS*PlA/B/C/D Spray /ECCS (Figure 2) (Borated 21'-9"/28"/12" Water) b) Discharge rolumn tenethl M/ 0.D./ Nozzle 25'-6 1/4"/12 3/4"/10"

1) f rom mounting plate to suction bell

2) from mounting plate to suction barrel

3) from centerline discharge nozzle to suction bell CZ) ,

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