ML20059C399

Forwards SE Re Relief Requests GR-7 & RCIC-6 for Plant Pump & Valve Inservice Testing Program.Proposed Alternative to OM-1 Safety & Relief Valve Requirements Would Provide Acceptable Level of Quality & Safety

ML20059C399
Person / Time
Site:	Monticello
Issue date:	10/25/1993
From:	Bill Dean Office of Nuclear Reactor Regulation
To:	Richard Anderson NORTHERN STATES POWER CO.
Shared Package
ML20059C403	List: ML20059C399 ML20059C405
References
TAC-M86939, NUDOCS 9311010144
Download: ML20059C399 (3)

Text

- a u . -- - 1._, n a = . -. -r --<a. u. _. - - -,s. > p

'f

+

SQ Ric j" j UNITED STATES

. J-[Y NUCLEAR REGULATORY. COMMISSION - '

.; [ g ' WASHINGTON, D.C. 20066-0001 t

% * .e / October 25,1993 -

Docket No. 50-263 a

Mr. Roger 0. Anderson, Director i ~

Licensing and Management Issues Northern States Power Company ,

414 Nicollet Mall  !

Minneapolis, Minnesota 55401

SUBJECT:

SAFETY EVALUATION OF RELIEF REQUESTS GR-7 AND RCIC MONTICELLO ,

NUCLEAR GENERATING PLANT PUMP AND VALVE INSERVICE TESTING PROGRAM -

(TAC NO. M86939)

By letter dated June 30, 1993, Northern States Power Company submitted Relief- -i Requests GR-7 and RCIC-6 to its Pump and Valve Inservice Testing Program. -

Relief Request GR-7 of your submittal requested relief from certain '

requirements of OM-1 for Class 1, 2, and 3 pressure relief valves not meeting -t acceptance criteria. You proposed that Class 1, 2, and 3 pressure relief '

valves with set point pressures of 70 psi or less have a set point acceptance criteria tolerance of i 2 psi. Relief Request-RCIC-6 of your submittal  !

requested relief from the power-operated valve stroke time test for the reactor core isolation cooling turbine exhaust line pressure boundary valve .

SV-4283. You proposed to verify the valve is closed quarterly by observing that there is no excessive steam leakage past the valve seat during RCIC  :

turbine operation.

The staff has evaluated Relief Request GR-7 and has determined that the proposed alternative to the OM-1 safety and relief valve requirements would provide an acceptable level of quality and safety. Therefore, the staff ,

authorizes its use pursuant to 10 CFR 50.55a(a)(3)(1). However, a list of the safety and relief valves to which this relief request applies shall be -

included in your IST program document. >

The staff has also evaluated Relief Request RCIC-6 and has determined that both verification of closure and stroke timing are impractical and that an ,

interim period of relief is necessary for further evaluation. The staff has further determined that the proposed method of verifying the capability of the valve to close, though not following the pump test, would provide assurance of.

operational readiness for this valve for an interim period considering the impracticalities of design and the burden of immediate imposition of the Code-requirements. Therefore, pursuant to 10 CFR 50.55a(f)(6)(i), relief is granted for a period of 1 year or until the next refueling outage, whichever is later, to provide a period of further evaluation.

S The staff has determined that the granting of Relief Request RCIC-6 is authorized by law and will not endanger life or property or the common defense and security and is otherwise in the public interest giving due consideration to the burden upon the licensee that could result if the Code requirements .

were immediately imposed on the facility.  ;

9[fDl .

2800N NilC Fii.E CENTER COPY 9311010144.931025 ~

PDR ADOCK 05000263 P PDR

4 Mr. Roger 0. Anderson Ocuter 25,1993 The basis for our findings and conditions are provided in the enclosed safety evaluation. This completes the staff's review on these relief requests.

The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P.L.96-511.

Sincerely, William M. Dean, Acting Project Director Project Directorate 111-1 Division of Reactor Projects - III/IV/V Office of Nuclear Reactor Regulation

Enclosure:

Safety Evaluation cc w/ enclosure:

See next page

4  ;

9

.t

-Mr. Roger 0. Anderson October 25,1993  :!

The basis for our findings and conditions are provided in the enclosed safety.

evaluation. This completes the staff's review on these relief requests.

1 The reporting and/or recordkeeping requirements contained in this'. letter j

' affect fewer than ten respondents; therefore, OMB clearance is not required  ;

under P.L.96-511.

Sincerely, Original signed by William M. Dean, Acting Project Director Project Directorate 111-1 ,

Division of Reactor Projects - III/IV/V Office of Nuclear Reactor Regulation j

Enclosure:

Safety Evaluation cc w/ enclosure:

See next page DISTRIBUTION:

Docket File J.Colaccino NRC & Local PDRs OGC ,

T.Murley/F.Miraglia E. Jordan J.Partlow G. Hill (2)

E.Rossi ACRS (10)

J.Lieberman OPA J. Roe OC/LFDCB J.Zwolinski B.McCabe W. Dean B.Jorgensen, RIII M.Gamberoni C.Jamerson

, orricE LA:PD3-1 h/ PM:PD3-1 . BC:EMEBAPPA OGC _ f,. (A)D:PD3-1 NAME CJamerso MGamber b JNorberg WMDean M onc jo /d/ 9b p fiq / 93 /e // /y5 10 fpp/ 4 /Vft1 0FFICIAL RECORD COPY %c4v,q FILENAME: G:\WPDOCS\MONTICEL\ MON 86939.SE2 ";'{r+fe,,

J4

Mr. Roger 0. Anderson, Director. Monticello Nuclear Generating Plant Northern States Power Company CC:

J. E. Silberg, Esquire Lisa R. Tiegel Shaw, Pittman, Potts and Trowbridge Assistant Attorney General 2300 N Street, N. W. Environmental Protection Division Washington DC 20037 Suite 200 520 Lafayette Road i U.S. Nuclear Regulatory Commission St. Paul, Minnesota 55155 Resident Inspector Office 2807 W. County Road 75 Monticello, Minnesota 55362 Site General Manager Monticello Nuclear Generating Plant Northern States Power Company Monticello, Minnesota 55362 Robert Nelson, President Minnesota Environmental Control Citizens Association (MECCA) 1051 South McKnight Road St. Paul, Minnesota 55119 Commissioner Minnesota Pollution Control Agency r 520 Lafayette Road St. Paul, Minnesota 55119 Regional Administrator, Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 Commissioner of Health Minnesota Department of Health 717 Delaware Street, S. E. .

Minneapolis, Minnesota 55440 Darla Groshens, Auditor / Treasurer Wright County Government Center 10 NW Second Street Buffalo, Minnesota 55313 Kris Sanda, Commissioner Department of Public Service 121 Seventh Place East Suite 200 St. Paul, Minnesota 55101-2145 Juty tW3