ML18191A297

Wppss Nuclear Project No. 2, Post Construction Permit Item, Piping and Instrumentation Diagrams

ML18191A297
Person / Time
Site:	Columbia
Issue date:	02/21/1975
From:	Stein J Washington Public Power Supply System
To:	Giambusso A Office of Nuclear Reactor Regulation
References
G02-75-51
Download: ML18191A297 (10)

Text

NRC DISTRIBUTION FOR PART 50 DOCKET MATERIAL (TEMPORARY FORM)

CONTROL NO:

FILE F RQM ~ Washington Pub 1 ic Pwr DATE OF DOC DATE R EC'D LTR TWX RPT 'OTHER Richland, Wash "

2-21-75 2-27-75 J Stein TO: ORIG CC ,OTHER SENT AEC PDR Mr Giambusso .one signed SENT LOCAL PDR CLASS UNCLASS PROPINFO INPUT NO CYS REC'D DOCKET NO:

1 50-397 DESCRIPTION: ENCLOSURES:

Ltr re our 2-14-75 ltr......notarized 2-21-75

.......furnishing responses to questions QIDGED concerning piping & instrumentation diagrams q 0+<

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Washington Public Power Supply System A JOINT OPERATING AGENCY P'de CV-g<~IIt~toPf P. 0, BOX 968 3000 GEO. WASHINGTON WAY RICHLAND, WASHINGTON 99352 PHONC (509) 946-968l Docket No. 50-397 t'J February 21, 1975 G02-75-51 Mr. A. Giambusso, Director ~~gumII<

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Division of Reactor Licensing COO'JgA0%

Office of Nuclear 'Reactor Re g ulation U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Ol 6

Subject:

l<PPSS NUCLEAR PROJECT NO. 2 POST CONSTRUCTION PERMIT ITEM PIPING AND INSTRUMENTATION DIAGRAMS

Reference:

Letter, W. R. Butler to J. J. Stein, transmitting Request for Additional Information dated February 14, 1975, Letter No. GI2-75-28.

Dear Mr. Giambusso:

This is in response to the reference letter's request for additional information on the WPPSS Nuclear Project No. 2 Piping and Instrumentation Diagrams. WPPSS,response to each item identified is as follows:

f Comment 211. 1':

e In Drawing M-512, the applicant should indicate the seismic and quality group classification of the diesel 'oil system and the diesel auxiliary systems (cooling water,, lube oil,'nd starting air). It is our position that these systems be Seismic Category I, guality Group C.

~Res ense:

Drawing.,M-512, Rev. 0 presently indicates the seismic category and quality group classification 'of the diesel auxiliary systems.

Presently the diesel fuel oil system up to the engines is Seismic Category I,, guality Group C.

All of the diesel systems mounted on the engine are Seismic Category I (lube oil, fuel oil, starting air, cooling water). The diesel cooling water heat exchangers that interface with the standby ser-vice water system are Section III, Class 3. Since the diesel engine manufacturer, Electro Motive Division of General Motors (EMD) does not possess an ASME Code stamp it is not possible to upgrade the diesel engine system to guality Group C.

0.

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Mr. A. Giambusso Page 2 February 21, 1975 G02-75-51 The PSAR (page C.6-9) states that the diesel generators are Safety Class 2, guality Assurance Requirement B, no appropriate construction code applicable and seismic requirement 0/D. The design of the diesel generator is consistent with these requirements.

Comment 211.2:

In Drawing M-527, the HPCS suction line from the condensate storage tank provides the initial source of makeup water to the HPCS system for safety injection. Consequently, this line should be constructed to standards higher, than normal industry practice. The applicant should provide full volumetric exami-nation of every weld in the HPCS pump suction line.

~Res onse:

Every weld in the HPCS pump suction line will be given full volumetric examination.

Comment 211.3:

In Drawing M-529, the 2 inch line (4 inch at the vessel connec-tion) connected to the reactor vessel head is incorrectly classified as guality Group D. This line should be classified guality Group A.

~Res onse:

Drawing M-529 has been corrected to show the 2 inch line (4 inch at the vessel connection) is classified guality Group A.

Comment 211.4:

In Drawing M-529, the main steam drain line, classified guality Group D, is connected to main steam lines A and B, classified guality Group B. The main steam drain line should be guality Group B out to and including an isolation valve either normally closed or capable of automatic closure in the event of failure of the guality Group D portion of the drain line.

~Res onse:

II The 2 inch main steam line (MS 20-4) out to and including the isolation valve (MS-V-20) has been changed to guality Group B.

In addition the isolation valve (MS-V-20) will automatically be closed on a main steam line isolation signal.

%1

~- Plr. A. Giambusso Page 3 February 21, 1975 G02-75-51 Comment 211.5:

In Drawing M-530, the 2 inch line connected to the bottom of the reactor vessel is incorrectly classified as guality Group C.

This line, as shown, forms part of the reactor coolant pressur e boundary and should be classified guality Group A.

~Res onse:

In Drawing M-530, the 2 inch line connected to the bottom of the reactor vessel has been changed to guality Group A.

Comment 211.6:

In Drawing M554, indicate the classification of the components of the hydrogen recombiner system. This system should be Seismic Category I and guality Group B.

~Res onse:

Drawing M-554 Revision 0 classifies the components of this system Seismic Category I and guality Group B.

Please do not,hesitate to'ontact us if you. have any questions regarding this matter.

Very truly yours, Managing Director JJS:GLG:vlm cc: JJ Byr nes - Burns and Roe, Inc.

BM Kennedy - Bonneville Power Administration JJ Verderber - Burns and Roe, Inc.

L Letter, JJ Stein to Giambusso, February 2g 1975, st Construction Permit Item Piping and Instrumentation Diagrams," Letter'o. G02-75-51 STATE OF WASHINGTON )

) ss COUNTY OF BENTON N ~ 0. STRAND, Being first duly sworn, deposes and says: That he is the acting Deputy Managing Director of the WASHINGTON PUBLIC POWER SUPPLY SYSTEM, the applicant herein that he is authorized to submit the foregoing on behalf of said applicant; that he has read the foregoing and knows the contents thereof; and believes the same to be true to the best of his knowledge.

DATED ~/, 1975 N. 0. TRAND On this day personally appeared before me N. 0. STRAND to me known to be the individual who executed the foregoing instrument and acknowledged that he signed the same as the free act and deed for the uses and purposes therein mentioned.

GIVEN under my hand and seal this 4/~ay of , 1975.

Notary Public in and for th State of Washington Residing at

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