ML18026A376

Responds to Request for Justification of Containment Isolation Valve Reset Logic Per SER Outstanding Issue 44. Cites Reasons Why Individual Valves Require No Mods to Prevent Automatic Reopening After Logic Reset

ML18026A376
Person / Time
Site:	Susquehanna
Issue date:	08/04/1981
From:	Curtis N PENNSYLVANIA POWER & LIGHT CO.
To:	Schwencer A Office of Nuclear Reactor Regulation
References
IEB-80-06, IEB-80-6, PLA-898, NUDOCS 8108100109
Download: ML18026A376 (3)

Text

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AGCESSIOV NdR : 8108100109 DVC ~ DATE t 81/08/04 NOTARIZED: NO DOCKET ¹ FACIL:50 357 Susquehanna Steam Electric Station< Unit 1, Pennsylva 0500 BYNAME 50 398 Susquehanna Steam Electric Stationi Unit 2< Pennsylva 050 AUTH AUTH')R AFFILIATION CURTIS' ~ 4. Pennsylvania Po<<er 8 Light Co ~

RECIP ~ VA "E RECIPIENI AFFILIATION SCHNE.VG ER i h, Licensing Branch 2

SUBJECT:

Responds to request f~r Justification of containment isolation valve reset logic oer SER Outstanding Issue 44 reasons <<hy individual valves require no mods to 'ities orevent automatic reooening after logic resets OISTRIB'3 TI JN TITLE: >SA </F C DOE: 8001S SAR AulD TS COPIES RECEI VEO: LTR and Re a ted Cor r esponaence 1

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TWO NORTH NINTH STREET, ALLENTOWN, PA. 18101 PHONEr (215) 770-5151 NORMAN W. CURTIS c$

Vice President-Engineering 8 Construction-Nuclear 7705381 August 4, 1981 r'fKQb "

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Mr. A. Schwencer, Chief Licensing Branch No. 2 Division of Licensing U.S. Nuclear Regulatory Commission Washington, D.C. 20555 SUSQUEHANNA STEAM ELECTRIC STATION SER OUTSTANDING ISSUE 44 ER 100450 FILE 841-2 DOCKET NOS. 50-387 PLA-898 50-388

Dear Mr. Schwencer:

The following is a difinitive statement which you requested justifying the containment isolation valve reset logic as presented in our response to IE Bulletin 80&6.

Valves HV-1F002, HV-1F003, HV-1F007, HV-lF008, HV-1F088 and HV-1F100 require no modifications to prevent automatic reopening after logic reset because the reset switch is a keylock switch with an administratively controlled key.

Any operation of the reset switch requires a deliberate operator action. The operator is required to ensure'that the valve switches are in the correct position prior to operating the keylock reset switch.

Valves HV-1F016 A,B and HV-1F028 A,B require no modifications to prevent automatic reopening after logic reset and all signals clear because the inboard valves, HV-lF021, HV-1F027 and HV-lF024, are already designed so that they do not automatically reopen. The inboard valves will maintain containment integrity when the logic is reset.

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If you have any further questions, please contact us.

QiJJ N. W. Curtis Vice President-Engineering 6 Construction-Nuclear CTC/mks C'DR 8 1 081 00 PDR i O'P 8 10804 ADOCK 05000387 PENNSYLVANIA POWER 8 LIGHT COMPANY &r d

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