ML20050A797

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Responds to NRC 820225 Request for Addl Info Re TMI Action Plan Item II.B.1 Concerning RCS High Point Vents.Info Re Positive Valve Position Indication for Shut Down Offgas Valve & Verification of Vent Isolation Included
ML20050A797
Person / Time
Site: La Crosse File:Dairyland Power Cooperative icon.png
Issue date: 03/23/1982
From: Linder F
DAIRYLAND POWER COOPERATIVE
To: Crutchfield D
Office of Nuclear Reactor Regulation
References
RTR-NUREG-0737, RTR-NUREG-737, TASK-2.B.1, TASK-TM LAC-8166, NUDOCS 8204020281
Download: ML20050A797 (2)


Text

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D DA/RYLAND h

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  • PO BOX 817
  • 2615 EAST AV SOUTH
  • LA CnOSSE. WISCONSIN 54601 (608) 788-4000 MdrCh 23, 1982 In reply, please refer to LAC-8166 DOCKET NO. 50-409 U. S. Nuclear Regulatory Commission ATTH:

Mr. Dennis M. Crutchfield, Chief Operating Reactors Branch #5 g

Of fice of Nuclear Reactor Regulation g//

Division of Operating Reactors D

Washington, D. C.

20555 P.EL,,*p,:.py

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SUBJECT:

DAIRYLAND POWER COOPERATIVE APR 01ggg2>

LA CROSSE BOILING WATER REACTOR (LACBWR)

I PROVISIONAL OPERATING LICENSE NO. DPR-45 sup8 %

8 POST TMI REQUIREMENTS (ITEM II.B.1) m 1>

//

REFERENCE:

(1) NRC Letter, Crutchfield to Linder, dated Februa ry 25, 1982 Gentlemen:

Your letter (Reference 1) requested additional infonnation on TMI Action Plan, Item II.B.1, RCS High Point Vents.

The information is provided as follows:

ITEM 1 NRC RPQURST Verify that pccitive valve pmitim indicaticn is prcoided for Shutdant Ccndence r Off-Gaa Valve lhartbar 62-25-003 (refe rence tiURRG-0737 Item IT.R.1 Clarifimtim A.(5)).

DPC RESPONSE Positive valve position indication is provided for Shutdown Condenser Off-Gas Valve, 62-25-003. There is an ann directly connected to the valve stem which activates one of two switches energizing either the open or closed valve light.

ITEM 2 NRC RPQURST In pair n?apmne to NURRG-0737 Itert II.b.1 (LAC-7624) pcu indimte that the Shutdam Ccndeneer Off-Gac Vent can la icolated by elcning the too normily iceked men inclation tulves, yet air emy of Druning 41-300-084 indicates the toe tnloc.s are ncnnity men rnmaal glohr valves and no indicati n is given that their menit.cra am c.rtericr co the ecntainment. Verify that the Oh hi 0 n D204020281 820323 1-PDR ADOCK 05000409 P

PDR

Mr. Dennis M. Crutchfield Chief March 23, 1982 U. S. fluclear Regulatory Conmission LAC-8166 Shutd:vn Ccndencer Off-Gao vent 02n le isciated in cnier to mininine the pectability $ a vent path failing to cime cnce cpened (reference NUREG n?37 Iten II.R.1 Clarificaticn A. ( 8) ).

UPC RESP 0flSE Valve No. 55-24-039 Shutdown Condenser Vent to Holdup Tank is a normally locked open manual valve located in the Turbine Building Tunnel. This valve can be closed to isolate the Shutdown Condenser Off-Gas Vent Line if Valve No. 62--25-003 failed to close once opened. Training has been provided in use of this valve in Emergency Plan exercises.

ITEM 3 NRC REQUES'i' Penides the mactor cociant aycten and the chutda3n ecndenser, identify any cther eyctene, required to mintain adecmate ccre eccling, in which ths cctiecticn 6 a large anmnt i ncnecndensible gas emld a2uee the ices f functicn i these systene.

Pcr any identified syntene provide infcm1ticn cn the wncte venting capability prcvided fcr these apetene necessary to satisfy each mquirenent $ NUREG-0737 Iten II.R.1 (refenenen NUREG-0737 Iten II.R.1 Clarificat icn B. (2)).

DPC RESPONSE There are no other systems required to maintain adequate core cooling, in which the collection of a large amount of noncondensible gas could cause the loss of function of these systems during an accident.

If there are any questions regarding this letter, please contact us.

Very truly yours, DAIRYLAND POWER COOPERATIVE MW/Mu#

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Frank Linder, General Manager FL:LSG:eme cc:

J. G. Keppler, Regional Director, NRC-DRO III NRC Resident Inspector WP-1 l