ML20204J232

Forwards Request for Addl Info Re Review of 880226 Submittal Concerning Revs to Emergency Ventilation/Exhaust Sys Tech Specs.Items Discussed During 881014 Telcon W/H Chernoff & Other Util Staff Members

ML20204J232
Person / Time
Site:	Wolf Creek
Issue date:	10/19/1988
From:	Pickett D Office of Nuclear Reactor Regulation
To:	Withers B WOLF CREEK NUCLEAR OPERATING CORP.
References
TAC-67571, NUDOCS 8810250047
Download: ML20204J232 (4)

Text

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' October 19, 1988 Docket No. 50-482 Mr. Bart D, Withers President and Chief Executive Officer Wolf Creek Nuclear Operating Corporation Post Office Box 411 Burlington, Kansas 66839

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION REGARDING REVISION TO ENERGENCY VENTILATION / EXHAUST SYSTEMS TECHNICAL SPECIFICATIONS (TAC NO. 67571)

The staff is continuing its _ review of your February 26, 1988 submittal concerning revisions to Ei..ergency Ventilation / Exhaust Systems Technical Specifications. The staff requests additional information identified in the enclosure to continue its review. These items were discussed via telephone conference with Mr. Harold Chernoff and other members of your technical staff on October 14, 1988.

This request for inferitation affects fewer than 10 respondents; therefore, OMB clearance is not required under P.L.96-511.

Sincerely,

/s/

Douglas V. Pickett, Project Manager Project Directorate - IV Division of Reactor Projects - III, IV, Y and Special Projects Office of Nuclear Reactor Regulation

Enclosure:

As stated cc w/ enclosure:

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%,*****/ October 19, 1988 Docket flo. 50-482 Mr. Bart D. Withers President and Chief Executive Officer Wolf Creek Nuclear Operating Corporation Post Office Box 411 Burlington, Kansas 66839 1

SUBJECT:

REQUEST FOR ADDITIONAL !!4 FORMAT 10!i REGARD!!tG REVIS10!! TO El'ERGEllCY VEllTILAT10ft/ EXHAUST SYSTEMS TECHillCAL SPECIFICAT10ftS (TAC NO. 67571)

The staff is continuing its review of your February 26, 1988 submittal concerning revisions to Eraecgency Ventilation / Exhaust Systems Technical Specifications. The staff requests additional inforn.ation identified in the enclosure to continue its review. These items were discussed via telephone conference with 14r. Harold Chernoff and other n. embers of your technical staff on October 14, 1988.

This request for :nfornation affects fewer than 10 respondents; therefore, CFB clearar.ce is not required under P.L.96-511.  !

l Sincerely, '

%.Oe n V  ?

Douglas V. Pickett, Project Managcr Project Directorate - IV Division of Reactor Projects - III, IV, Y and Special Projects Office of Nuclear Reactor Regulation

Enclosure:

As stated cc w/ enclosure:

See next page i

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Mr. Bart D. Withers Wolf Creek Generating Station Wolf Creek fluclear Operating Corporation Unit flo. I cc:

Jay Silberg, Esq. Mr. Gerald Allen Shaw, Pittman, Potts & Trowbridge Public Health Physicist 1800 M Street, NW Bureau of Air Quality & Radiation Washington, D.C. 20036 Control Division of Environment Chris R. Rogers, P.E. Kansas Department of Health Manager Electric Department and Environment Public Service Commission Forbes Field Building 321 P. O. Box 360 Topeka, Kansas 66620 Jefferson City, Missouri 65102 Mr. Gary Boyer, Plant fianager Regional Administrator, Region 111 Wolf Creek Nuclear Operating Corp.

U.S. fluclear Regulatory Cormiission P. O. Box 411 799 Rcosevelt Road Burlington, Kansas 66839 Glen Ellyn, Illinois 60137 Regional Administretor, Region IV senior Resident Inspector / Wolf Creek U.S. Nuclear Resclatory Comission c/o U. S. fluelear Regulatory Comission Office of Executive Director P. O. Box 311 for Operations Burlington, Kansas 66839 611 Ryan Plaza Drive, St.ite 1000 Arlington, Texas 76011 ftr. Robert Ellict, Chief Engineer Utilities Division Mr. Otto Itaynard, Manager Licensing Kansas Corporation Cor.riission Wolf Creek Nuclear Operating Corp.

4th Floor - State Office Building P. O. Box 411 Topeka, Kansas 66612-1571 Burlington, Kansas 66839' t

4 Enclosure f

1 REQUEST FOR ADDITIONAL INFORMATION PLANT SYSTEMS BRANCH Proposed Technical Specification 3/4.7.6, control room emergency ventilation system, 3/4.7.7, emergency exhaustemergency system-fuel building, exhaustWolf system-auxiliary building, Creek Generating Stationand 3/4.9.13,),

(WCGS Unit l;o. 1 - TAC No. 67571

1. Justify deleting thd maintenance surveilience requirements under technical specification 3/4.7.6.c.1. This concerns the pressure differential verification across the filter 5 for the filtration systea and pressurization system.

F. Justify deleting the dirty filter cressure differential verification under technical specification 4.9.13.b.1.

3. Discuss why the exhaust fan flow rate must be changed from 9000 cfm to 6500 cfn in the fuel building.

4 Justify with the bases that the accident releases are adequately controlled during postulated accident conditions at the new negative pressure levels in the auxiliary building and fuel building.

5. What is the thickness of the chr.rcoal beds for each filter and their assigned iodine removal efficiencies? Verify with bases that at the revised flow rates the system complies with Regulatory Guide (RG) 1.52 Position 31 (at least .25 sec/2 inch of adsorbent bed).

6. Provide unfiltered in-leakage flow rates due to the ingress and egress, per SRP 6.4.lli.3.d.3, for use in dose calculations. ,

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