ML20205M285
| ML20205M285 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 04/11/1986 |
| From: | Johnson W PUBLIC SERVICE CO. OF NEW HAMPSHIRE |
| To: | Noonan V Office of Nuclear Reactor Regulation |
| References | |
| SBN-1002, NUDOCS 8604150159 | |
| Download: ML20205M285 (5) | |
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A Wendell P. Johnson Vice President April 11, 1986
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'"t E.2 ew Hampshire Yankee Division United States Nuclear Regulatory Com.ission Washington, DC 20555 Attention:
~ Mr. Vincent S. Noonan, Project Director PWR Project Directorate No. 5
References:
(a) Construction Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 (b) PSNH Letter, SBN-574, " Diesel Generator Operation at No load", J. DeVincentis to G. W. Knighton, dated October 28, 1983 (c) PSNH Letter, SBN-903, " Resolution of Power System Branch Confirmatory Items", J. DeVincentis to G. W.
Knighton, dated November 27, 1985 (d) Colt Industries Letter, " Diesel Generator Operation at No Load", G. Olson to A. M. Ebner, dated April 9, 1986 Subj ect :
Diesel Generator Operation at No Load, SER Sections 8.3.1.2.8 and 9.5.4.1
Dear Sir:
SER Sections 8.3.1.2.8 (Page 8-10) and 9.5.4.1 (Page 9-73) indi-cate that electric heaters will be installed in the diesel generator air intake plenum for combustion air preheating.
Reference (b) documented that these preheaters were not required based on discussions with the diesel generator manufacturer, Colt Industries.
Note that Reference (b) was also transmitted as part of Appendix B to Reference (c).
In response to the NRC reviewer's request for supporting documenta-tion for Reference (b), enclosed please find a copy of our most recen t correspondence with Colt on this subject [ Reference (d)].
Colt's letter documents that there is no effect on diesel generator output or operation under load after running at no-load without regard for ambient conditions.
Therefore, as provided in Reference (b), there is no need to install pre-heaters.
The requirement given in Reference (d) oi 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> of operation at greater than 50% load af ter each 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of no load operation is already
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included in FSAR Section 9.5.8.3.
8604150159 860411 DR ADOCK 0500
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P.O. Box 300 + Seabrook. NH 03874. Telephone (603) 474-9521
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United States Nuclear Regulatory Comenission Attention:
Mr. Vincent S. Noonan Page~2 l
l We request that the above information be reflected in the next supplement to the Seabrook Station SER.
Very truly yours, g
Wendell P. Joh on Enclosure cc: Atomic Safety and Licensing Board Service List l
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Willica S. Jcrd n, III Doncid E. Chick Dicn3 Curran Town Ma:cg;r Harmon, Weiss & Jordan Town of Exeter 20001 S. Street, N.W.
10 Front Street Suite 430 Exeter, NH 03833 Washington, D.C.
20009 Brentwood Board of Selectmen Robert G. Perlis RED Dalton Road Office of the Executive Legal Director Brentwood, NH 03833 U.S. Nuclear Regulatory Commission Washington, DC 20555 Richard E. Sullivan, Mayor City Hall Robert A. Backus, Esquire Newburyport, MA 01950 116 Lowell Street P.O. Box 516' Calvin A. Canney Manchester, NH 03105
-City Manager City Hall Philip Ahrens, Esquire 126 Daniel Street Assistant Attorney General Portsmouth, NH 03801 Augusta, ME 04333 Stephen E. Merrill Mr. John B. Tanzer Attorney General Designated Representative of Dana Bisbee, Esquire the Town of Hampton Assistant Attorney General 5 Morningside Drive Office of the Attorney General Hampton, NH 03842 25 Capitol Street Concord, NH 03301-6397 Roberta C. Pevear Designated Representative of Anne Verge, Chairperson the Town of Hampton Falls Board of Selectmen Drinkwater Road Town Hall Hampton Falls, NH 03844 South Hampton, NH 03827 Mrs. Sandra Gavutis Patrick J. McKeon Designated Representative of Selectmen's Office the Town of Kensington 10 Central Road RFD 1 Rye, NH 03870 East Kingston, NH 03827 Carole F. Kagan, Esquire Jo Ann Shotwell, Esquire Atomic Safety and Licensing Board Panel Assistant Attorney General U.S. Nuclear Regulatory Commission Environmental Protection Bureau Washington, DC 20555 Department of the Attorney General One Ashburton Place, 19th Floor Mr. Angi Machiros Boston, MA 02108 Chairman of the Board of Selectmen Town of Newbury Senator Gordon J. Humphrey Newbury, MA 01950 U.S. Senate Washingtoc, DC 20510 Town Manager's Office (ATTN: Tom Burack)
Town Hall - Friend Street Amesbury, MA 01913 Diana P. Randall 70 Collins Street Senator Gordon J. Humphrey
'Seabrook, NH 03874 1 Pillsbury Street Concord, NH 03301 Richard A. Hampe (ATTN: Herb Boynton)
Hampe and McNicholas 35 Pleasant Street H. Joseph Flynn Concord, NH 03301 Of fice of General Counsel Federal Emergency Management Agency 500 C Street, SW Washington, DC 20472
YArKEE ATOMIC FRAMINGHM MA Enclosure to P.02 SBN-1002 ColtIndustfies
- temsmeme Engins olvision tott w Annus asten, w gepitaset Teleonenes8004044411 MosesionSGepes4888 (306006)27S i
Aeril 9, itse Gaited Engiacere end Cemetrusters 30 Seath 17th street P.O. Boa Ott3 Philadelphia, Pa 19101 Atteatten Dr. A.E Ebner Subjesti F.0. No. BNs-94, 9763.006-201-1 i
Emergency Diesel Generater Set Publis Sorrice Co. of New Weepshire Seabreah Staties No Lead Engins Operation Referesset A.
Colt letter to the NRC dated 9/11/75 3.
Colt 1stter f243 to D.N. Ehedos dated $/26/43 C.
Toskaa Atomie letter to colt dated 4/3/84 Attaehment:
Colt letter se the NRC dated 9/11/73 Oustlement I
la reopease to your_ concern en ne lead operation of the Colt 701 engine we offer the following.
Our Mr. Stenshockere letter of 9/11/75 to Mr. Fred Clem$ son of the Nac in Bethesda. Md. eleerly outlinas Celte peettien en low or ao lead engine operation resordless of embtent conditions.
The 1stter states the engine ehesis be operated above 50s lead for et least I hour for amah 14 heute of low lead (1ase then 101) er ne lead operation La each 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> t
%ede witness regard for esbient osaditions.
This to semeistent with the colt Operesies and Maintenanos,Nemual for the Seabrook Plaat.
The first paragraph of Celte 1stter #243 dated S/26/43 was in roepense to a speoitta stion directed at Celt by the NRC reytower during an FSAR review on the Seabroek Tient. Cette saever et the time of the PSAR meeting were predieeted on the specifie question of g or mini _ um degradation of the m
dieseio during g periods of no lead operaties.
i Colt standard peettien is se expressed in the Sept. 11.1975 1stter to Mr.
Fred Clemeneen.
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(106044)173 United Engineers and Constructors Philadelphia, PA
=2-April 9, 1986 We trust this will resolve any Seabrook/ Colt PC2 diesel sagines. questions on the no load operation of the Sincerely.
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B 5.W. Olsen, Supervisor Contract Administration suo/ji Attch.
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- 1. Casaprima - New York Balas Office 1.J. Iayser V.T. Stoeshocker N. Traeger
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September 11,1975 U.5. Nuclear Reguisting Comission Ava111ery & Power Cedversion Systems tranch PhillipsB1dg5 venue 7900 Norfolk Betheeds,Md.
20014 Attention: Mr. Fred Clemenson Dear Mr. Clonensoni This letter is in rooly to your verbal inqutry of our Mr. R. H. teadle in regard to any problems that could be encountered or limitations we would i se on the operation of our' engine generator sets for extended periods up to 30 days 720 hrs.) at various levels of load (from no lead to ull rated conditions)f this tree and come to the fellowing con-a have made a thorough restudy o closiens.
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There exists no mechanical limitgtion within the engine or any of its supportive systems which would limit operation over extended i
periods of time at rated speed between ne load and rated load with the exception of the possible accumulation of combustion and lobe oil products in the exhaust system, at the lower loads.
- t. This limitation can be overcome by the following method of operating the engine when it is necessary to keep it runn'ng over extended periods j
of time.
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- a. For the PCI model engine we wouId sukending over 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> a to be. operated for periods of time as i
loads were such that they did not exceed 205 of the en!ine rating, I
the engine.
Id he'nn at above los load fer at less one hour in each 24 e period In products..ot combustion and.lrder to minimize the accumulatio l
the 305 rating.'the engina may be run continuously as required, with 1
i the recomendation that the engine parameters be monitored closely.
and legged at least daily, se as to be able to discover any problems ear 1{n. Changes in cylinder exhaust temperatures would be of par i
i lar terest.
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- b. 81/8 Op models, the ttatement would read the same as for the PCI models with the exc6ption that the extended period should be 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> when the engine is operated free no load og to 305 load, with e one hour run at 505 load or greater, in each I hours. Above 305 i
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g[g ention as indicated,above the is kegn gy 3.
The consequences of allowing accumulation of combustion and lube oil products in the exhaust sytem would be primarily twofold l
The possibility of fire hazard on resuminq high loan operation with a.
i exhaust temperatures above the flash ooin'; of the products accumulated.,
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Fouling of the exhaust side of the turbochargers with crobable effects on their perfomance and/or vibration due to upsetting the balance of the rotating assemblies.
4.
We are including statements in the operating instruction manuals to cover this extended operation as indicatec above.
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We also recomend in our maintenance manuals, that there be an extensive
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inspection of the engina power parts after such extended operation to further operations. ascertain that all it in order and that the engine stays in i
J We hope this infomation will satisfy your needs.
flerther infomation, platse contact the writer.
In the event you need l
Very truly yours, i
i C01.T INDUSTRIES OPERAtts CORP.
l FAIRBANXS HORSE 'EMIME DIVI $10N
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V. T. 5tonthocker Manager systems Engineering VT5:b
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