ML20209J504

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Forwards Info Re Relief Valve Operation at Facility,Per Item 1 of 731219 Request.In Response to Item 2,licensee Has Proposed Tech Specs Change Re Refueling Outage Torus Insp, Pending,Therefore,No Addl Changes Necessary
ML20209J504
Person / Time
Site: Monticello, 05000000
Issue date: 01/30/1974
From: Mayer L
NORTHERN STATES POWER CO.
To: Ziemann D
US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20209J032 List:
References
FOIA-87-40 1016, NUDOCS 8705040300
Download: ML20209J504 (5)
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Text

.

NORTHERN STATES POWER COMPANY M IN N E A PO LI S, M I N N E S OTA 55401 January 30, 1974 Mr. Dennis Ziemann TI . . ,

Chief f.; i; , ,

Operating Reactors Branch #2 \A -

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(

Directorate of Licensing 6,g , -C/

Office of Regulation h l I k')( s,; ./

U S Atomic Energy Commission Washington, DC 20545

Dear Mr. Ziemann:

MONTICELLO NUCLEAR GENERATING PLANT Docket No. 50-263 License No. DPR-22 The attached information is submitted in response to Item 1 of your request of December 19, 1973, which asked for specific information regarding relief valve operations. It was asked that your information be submitted 30-days from the date of your letter. Since this letter was not received until December 31, 1973, arrangements were made by NSP through the AEC to have this information available within 30-days of the receipt of your letter.

Item 2 of your letter requested that within 60-days of receipt, that we submit to the AEC proposed Technical Specifications for limiting conditions of operation and surveillance requirements of the torus structure. We wish to remind you, that we have pending before the Commission, a proposed change to the Technical Specifications (L 0 Mayer to A Giambusso, " Supplement 1 to Change Request 3," Item 3, dated September 22, 1972) which augmented the scope of the refueling outage torus inspection. In addition, external torus inspection subsequent to each relief valve operation, was instituted on a procedural basis following the re-balancing of the torus ring header. This inspection will be conducted until sufficient confidence is established in the torus capability to withstand the dynamic interactions with relief valve discharge.

We believe that these measures are adequate to ensure torus integrity during operation and that no additional Technical Specification submittals are necessary.

Yours very truly,,

) JV /*" % ,

L 0 Mayer, PE Director of Nuclear Support Services LOM/DWJ/1h 8705040300 870428 PDR FOIA THOMAS 87-40 PDR f'

'1 " ~u .s cc: J G Keppler G Charnoff Minnesota Pollution Control Agency Attn. E A Pryzina

,- l* . ,

Ralief Volva Operating Dato +

  • page 1 of 4 Sumary of Operations A B C D No. Automatically 7 6 14 4 No. Manually 13 7 7 26 Total No. Of Operations 20 13 21 30 December 10, 1970 - June 30, 1971 RV 2-71A Date How Initiated No. of Operations 2/22/71 Manually During Operability Test 1 4/17/71 Manually During Operability Test 1 Manually During Startup Testing 1 4/21/71 4/22/71 Auto During Startup Testing 2 4/22/71 yanually During Startup Testing 1 5/20/71 Auto During Startup Testing 1 7 - TOTAL RV 2-71B 2/22/71 Manually During Operability Test 1 4/17/71 Manually During Operability Test 1 4/21/71 Manually During Startup Testing 1 i 5/20/71 Auto During Startup Testing 1 4 - TOTAL 1

RV 2-71C 2/22/71 Manually During Operability Test 1 4/17/71 Manually During Operability Test 1 4/21/71 Manually During Startup Testing 1 Auto During Startup Testing 1 5/20/71 4 - TOTAL RV 2-71D 1

2/22/71 Manually During Operability Test 1

4/17/71 Manually During Operability Test 2

4/21/71 Manually During Startup Testing 1

4/22/71 Manually During Startup Testing Auto During Startup Testing 1 5/20/71 6 - TOTAL

I

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R211ef Volva Opsrating Data .

Page 2 of 4

.4 July 1, 1971 - December 31, 1971 Date How Initiated No. of Operations RV 2-71A 7/5/71 Auto During Startup Testing 1 7/14/71 Auto Following a Scram During Normal Operation 1 8/9/71 Manually Following a Scram During Nonnal Operation 1 10/7/71 Nanually During Operability Test 2 5 - TOTAL RV 2-71B 7/5/71 Auto During Startup Testing 1 7/14/71 Auto Following a Scram During Normal Operation 1 10/7/71 Manually During Operability Test 1 3 - TMAL RV 2-71C 7/5/71 Auto During Startup Testing 1 7/14/71 Auto Following a Scrarr. During Normal Operation 9 10/7/71 Manually During Operability Test 1 il - TMAL RV 2-71D 7/5/71 Auto During Startup Testing 1 7/14/71 Auto Following a Scram During Nonnal Operation 1 8/20/71 Manually Following a Scram During Nonnal Operation 1 9/28/71 Manually Following a Scram During Normal Operation 3 10/7/71 Manually During Operability Test 1 7 - TNAL January 1, 1972 - June 30, 1972 RV 2-71A 1/29/72 Manually During Operability Test 2 2 - TM AL RV 2-71B 1/29/72 Manually During Operability Test 1 5/23/72 Auto Following a Scram During Normal Operation 1 2 - TMAL ,

,3 .

R211$f Volva Operating Data Page 3 of 4 t

January 1, 1972 - June 30, 1972 (Cont'd.)

No. of Operations Date flow Initiated RV 2-71C 1

1/29/72 Manually During Operability Test 1 . TOTAL RV 2-71D 1

1/29/72 Manually During Operability Test 7 4/21/72 Manually Following a Scram During Nomal Operation 8 - TOTAL July 1, 1972 - December 31, 1972 RV 2-71A 1

7/10/72 Auto Following a Scram During Nomal Operation

, 1

7/10/72 Manually Following a Scram During Nomal Operation 1 7/21/72 Auto Following a Scram During Nomal Operation 3 - TOTAL RV 2-71B 1

7/10/72 Auto Following a Scram During Nomal Operation 1 7/21/72 Auto Following a Scram During Nomal Operation 2 - TOTAL 4

RV 2-71C 1

7/10/72 Auto Following a Scram During Normal Operation 1 l

7/21/72 Auto Following a Scram During Nomal Operation 2 - TOTAL RV 2-71D No Operations During This Six bbnth Feriod.

January 1, 1973 - June 30, 1973 l

RV 2-71A 1

5/16/73 Manually During Operability Test 1 - TOTAL

(!..

Page 4 of 4

- R311sf Volve Opareting Data ,

January 1, 1973 - June 30, 1973 (Cont'd.)

No. of Operations Date How Initiated, RV 2-71B ,

1 5/16/73 Manually During Op.erability Test 1 - TOTAL RV 2-71C 1

5/16/73 Manually During Operability Test 1 - TOTAL RV 2-71D 1

5/16/73 Manually During Operability Test 1 - TOTAL July 1, 1973 - December 31, 1973 RV 2-71A 2

10/5/73 Manually During Operability Test 2 - TOTAL RV 2-71B 1

10/5/73 Manually During Operability Test 1 - TOTAL

! RV 2-71C I 1 10/5/73 Manually During Operability Test 1 l 11/6/73 Auto Following a Scram During Normal Operation t

2 - TOTAL RV 2-71D l

2 10/5/73 Manually During Operability Test 1 l 11/6/73 Auto Following a Scram During Normal Operation 5

i 11/6/73 Manually Following a Scram During Normal Operation 8 - TOTAL

. . _ . . - - - . - - - - - . - - . - _ . . _ , . . . _ - . .

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