ML20132C593

Responds to Requesting Clarification Re Applicability of 10CFR50.62 Concerning ATWS to Facility. Requirements of 50.62(c)(3),(4) & (5) Apply to BWRs

ML20132C593
Person / Time
Site:	La Crosse File:Dairyland Power Cooperative icon.png
Issue date:	07/26/1985
From:	Zwolinski J Office of Nuclear Reactor Regulation
To:	Linder F DAIRYLAND POWER COOPERATIVE
References
LSO5-85-07-037, LSO5-85-7-37, NUDOCS 8507300387
Download: ML20132C593 (4)

Text

July 26, 1985

m. DISTRIBUTION Docket File NRC PDR ORB #5 Reading Local PDR Docket No. 50-409 CJamerson HThompson LS05-85-07-037 RDudley PGrines DPyatt JPartlow ELD EJordan JZwolinski ACRS (10)

FGillespie JHannon RKarsch Mr. Frank Linder General Manager Dairyland Power Cooperative 2615 East Avenue South La Crosse, Wisconsin 54601

SUBJECT:

CLARIFICATION OF AflTICIPATED TRANSIENT WITHOUT SCRAff (ATFS) PULE; 10 CFR 50.62 Re: La Crosse Boiling Water Reactor (LACBWR)

By letter dated September 13, 1984, you requested clarification of the applicability to LACBWR of the subject regulation published in the federal Register on June 26, 1984. You stated correctly that requirements 50.62fc)(1) and (2) are for pressurized water reactors and hence are not applicable to LACBWR, which is a boiling water reactor. Requirements 50.62(c)(3), (4) and (5) are stated to apply to boiling water reactors.

Paragraph, 50.62(c)(3) requires BWRs to install an alternate rod injection system with redundant scram air header exhaust valves.

Paragraph 50.62(c)(4) requires that all RWRs granted construction permits prior to June 26, 1984 have a standby liquid control system (SLCS) with a minimun flow capacity and baron content equivalent in control capacity to 86 gallons per minute of 13 weight percent sodium pentaborate solution.

Paragraph 50.62(c)(5) requires that all BWRs must have equipment to trip the recirculation pumps automatically under conditions indicative of en ATWS event.

Paragraphs 50.62(c)(3) and (4) require "each boiling water reactor" to have specified equipment. Since La Crosse is a BWR, the requirements of 50.62(c)(3) and (4) are applicable to the La Crosse Boiling Water Reactor.

We do not believe that further clarification is required.

Regarding paragraph 50.62(c)(5), your September 13, 1984 letter stated that recirculation pump trip equipment was installed at La Crosse during the 1980 refueling outage. Thus, to clarification of this paragraph is required.

Sincerely, 8507300387 850726 PDR Joh"nl. Zwoli~nski, Chief P

ADOCK 05000409 PDR

• Operating Reactors Branch flo. 5 Division of Licensing g cc: See next page 6 36

• SEE PREVIOUS CONCURRENCE g d$

• DL:0RB#5 *DL:0RB#5 *0 ELD DL:0RB'5 CJamerson RDudley:Jb JGray JZwolinski 06/12/85 06/12/85 07/11/85 07/ 6 /85

. DISTRIBUTION Docket File NRC PDR OPB#5 Reading Local PDR CJamerson HThompson RDudley BGrimes DPyatt JPartlow ELD EJordan JZwolinski ACRS (10)

FGillespie JHannon RKarsc Mr. Frank Linder General Manager Dairyland Power Cooperative 2615 East Avenue South La Crosse, Wisconsin 54601

SUBJECT:

CLARIFICATION OF ANTICIPATFD TRANSIENT WIT GUT SCRAM (ATWS) RULE; 10 CFR 50.62 Re: La Crosse Boiling Water Reactor (LACBWR)

By letter dated September 13, 1984, you requeste clarification of the applicability to LACBWR of the subject regulati n published in the Federal Register on June 26, 1984 You stated correct that requirements 50.62(c)(1) and (2) are for pressurized water eactors and hence are not applicable to LACBWR, which is a boiling wate reactor. Requirements 50.62(c)(3), (4) and (5) are stated to apply to boiling water reactors.

Paragraph, 50.62(c)(3) requires BWRs to in tall an alternate rod injection system with redundant scram air header exhaust valves.

Paragraph 50.62(c)(4) renuires that all Rs granted construction permits prior to June 26, 1984 have a standby 1 quid control system (SLCS) with a minimun flow capacity and boron conten equivalent in control capacity to 86 gallons per minute of 13 weight pe cent sodium pentaborate solution.

Paragraph 50.62(c)(5) requires that 11 BWRs must have equipment to trip the recirculation pumps automatically u . der conditions indicative of an ATWS event.

Paragraphs 50.62(c)(3) and (4) re uire "each boilina water reactor" to have specified equiprent. Since La C asse is a BWR, the requirements of 50.62(c)(3)and(4)are . applicable to the La Crosse Boiling Water Reactor. N c+'" 4 .cesi9 i= issui- r r=g,tien fer thcsc t= 'tc: ;

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Regarding peragraph 50.62 .)(5), your September 13, 1984 letter stated that recirculation pump trip uipment was installed at La Crosse during the 1980 refueling outage. Thus no clarification of this paragraph is required.

Sincerely, l

John A. Zwolinski, Chief l Operating Reactors Branch No. 5

Division of Licensing l

cc: See next page

• SEE PREVIOUS CONCURRENCE -

• DL:0PB#5 *DL:0RB#5 EL DL:0RB#5 t CJarerson RDudley:jb ScrM/ JZwolinski 06/12/85 06/12/85 7 /s;/85 07/ /85

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The staff has determined that the requirements of 50.62(c)(3) nd(4)are legally applicable to the Lacrosse Boiling Water Reactor. r evaluation of the LACBWR's need for installation of equipment requir by these paragraphs is ongoing. "':n go iecc.'"- #"-+he s pci "

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=Pe. 3,opha C(t) and (4) will-- te reettfrede-Sincerely, John A. wolinski, Chief Opera ng Peactors Branch No. 5 Div ion of Licensing cc: See next page DISTRIBUTION Docket File NRC POR ORB #5 Reading Local PDR CJamerson HThompse RDudley BGrime- .

DPyatt JPart ow ELD EJ dan JZwolinski A S (10)

FGillespie ,,c,o f, p,s ,, n .- a p 6,, w c,? th DL:0RB#50ML CJarerson RDudley:jb kEJGE4Y DL:0RB#5 JZwolinski 06/[p/85 j 06/ 85 06//7/85 06/ /85 1

Mr. Frank Linder La Crosse Boiling Water Reactor Dairyland Power Cooperative cc Fritz Schubert, Esquire Clarence Riederer, Chief Engineer Staff Attorney Wisconsin Public Service Dairyland Power Cooperative Commission 2615 East Avenue South Post Office Box 7854 La Crosse, Wisconsin 54601 Madison, Wisconsin 53707

0. S. Heistand, Jr., Esquire Morgan, Lewis & Bockius 1800 M Street, N.W.

Washington, D.C. 20036 Mr. John Parkyn, Plant Manager la Crosse Boiling Water Reactor Dairyland Power Cooperative P. O. Box 275 Genoa, Wisconsin 54632 U.S. Nuclear Regulatory Commission Resident Inspectors Office Rural Route #1, Box 276 Genoa, Wisconsin 54632 Town Chairman Town of Genoa Route 1 Genoa, Wisconsin 54632 Chairman, Public Service Commission of Wisconsin Hill Farms State Office Building Madison, Wisconsin 53702 U.S. Environmental Protection Agency Federal Activities Branch Region V Office ATTN: Regional Radiation Representative 230 South Dearborn Street Chicago, Illinois 60604 Regional Administrator Nuclear Regulatory Comnission, Region III 799 Roosevelt Road Glen Ellyn, Illinois 60137 l