ML20024G435
| ML20024G435 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 09/28/1977 |
| From: | Desiree Davis Office of Nuclear Reactor Regulation |
| To: | Mayer L NORTHERN STATES POWER CO. |
| Shared Package | |
| ML20024G436 | List: |
| References | |
| NUDOCS 9102120450 | |
| Download: ML20024G435 (2) | |
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S ao NRC PDR OPA(C, Miles) 1 r
L PDR TAbernathy Docket NoC50_-263 ORBf2 Rdg. JBuchanan j
gEP 281977 VStello ACRS (16) i KGoller TCarter l
DDavis Northern States Power Company RDiggs ATTN: Mr. L. O. Mayer, Manager RSnaider l
Nuclear Support Services OELD 414 Nicollet Mall - 8th Floor 0!&E (2 l
Minneapolis, Minnesota 55401 BJones ( )$
RENHKX !
l Gentlemen:
BScharf(2)
DEisenhut By letters dated August 31, 1977 and September 23, 1977, you briefly described your feedwater nozzle repair prograte to be perfomed during f
the present refueling outage at the Monticello Wclear Generating Plant. You also stated, in the August 31 letter, that you were recal-culating the adequacy of nozzle reinforcement because removal of seine r
base material is planned.
Your caiculations were being perfomed in accoraance with the requirements of the ASitE (Anerican Society of Mechanical Engineers) Boiler and Pressure Vessel Code Section !!I, Paragraph NS-3330, and specifically to the alternative rules of NB-3339.
You noted that because the nearest feedwater nozzles are closer to the control rt>d drive return line nozzle and instrument line nozzle than is allowed by NB-3339.1, you propose to invoke the rules of Code i
Case 1804.
Footnote 6 to paragraph 50.55a (Title 10, Code of Federal Regulations, Part 50) states that the use of specific Code Cases may be authorized if proposed alternatives to the descrioed remirements or portions j
thereof provide an acceptable level of cuali and safety.
We have reviewed the application of Code Case 1804 to the specific case at Monticello and have detenained that acceptable levels of quality and safety are indeed provided.
Therefore we approve your invocation of Code Case 1804 with respect to this particular action at the Monticelle Nuclear Generating Plant. Our related Safety Evaluation is attached. b bdfl((SSYkedby g
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Don. Davis, Acting Chief g (k g Operating Reactors Oranch #2 Division of Operatina Reactors ~7
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Enclosure:
1 Safety Evaluation V
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NRC FORM 318 (9-76) NRCM 0240 us s. oovannuswv PsiiMTime oppscue s.fo - ese ad 9102120450 770928 DR ADOCK 050 3
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Northern States Power Company September 28, 1977 J
cc w/ enclosure:
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Gerald Charnoff, Esquire l
Shaw, Pittman, Potts and i
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Trowbridge 1800 M Street, N. W.
3 Washington, D. C.
20036 3
Arthur Renquist, Esquire Vice President - Law Northern States Power Company 414 Nicollet Mall Minneapolis, Minnesota 55401 Russell J. Hatling, Chairman Minnesota Environmental Control Citizens Association (MECCA) i Energy Task Force 144 fielbourne Avenue, S. E.
Minneapolis, Minnesota 55414 Mr. Kenneth Dzugan i
Environmental Planning Consultant g
Office of City Planner Grace Building 421 Wabasha Street St. Paul, Minnesota 55102 l
i Sandra S. Gardebring Executive Director h
Minnesota Pollution Control Agency 6
1935 W. County Road B2 c
Roseville, Minnesota 55113 s
Anthony Z. Roisman, Esquire Sheldon, Hannon & Roisman 102515th Street, it.
W., 5th Floor Washington, D. C.
20005 Mr. L. R. Eliason Plant Manager Monticello Nuclear Generating Plant Northern States Power Company Monticello, Minnesota 55362 The Environmental Conservation Library
~ Minneapolis Public Library 300 Nicollet Mall Minreapolis, Minnesota 55401 t
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