ML20008F023
| ML20008F023 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 02/12/1981 |
| From: | Ippolito T Office of Nuclear Reactor Regulation |
| To: | Morisi A BOSTON EDISON CO. |
| References | |
| NUDOCS 8103120050 | |
| Download: ML20008F023 (3) | |
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Docket Fil V J. Heltemes, AEOD NRC PDR Docket No. 50-293
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R. Purple R. Tedesco s
Mr. A. Victor Morisi, Manager G. Lainas e
a Nuclear Operations Support Department 0 ELD
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Boston Edison Company OI&E (3) i-M/C Nuclear T. Ippolito y/
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800 Boylston Street M. Williams p
Boston, Massachusetts 02199 S. Norris W
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Dear Mr. Morisi:
TERA
~
ACRS (16)
N Ref. (a) BECo Ltr 80-280 of Novenber 5,1980
SUBJECT:
ADEQUACY OF STATION ELECTRIC DISTRIBUTION SYSTEM VOLTAGES Your last correspondence (Ref. (a)) suggewed that further questions on the subject may best be resolved ir. a meeting with our staff. Subsequent to a review of Ref. (a) we determined that additional infomation was necessary. However, the infomation required analysis, on your part, which obviated the benefit of a meeting.
In an effort to clarify our remaining questions, members of the NRC staff contacted your staff on February 10,1981. The questions are contained in.
Your satisfactory response to these questions should result in the completion of our review. Your response to this letter is requested within 60 days of its receipt. Thank you for your cooperation in this regard.
Sincerely, Thomas A. Ippolito, Chief Operating Reactors Branch f2 Division of Licensing Eaclosure:
Request for Additional Information cc w/ encl:
See next page 9
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3 Mr. '. Victor Morisi Boston Edison Company cc:
Mr. Richard D. Machon Pilgrim Station Manager Boston Edison Company RFD #1, Rocky Hill Road Plymouth, Massachusetts 02360 Henry Herrmann, Esquire Massachusetts Wildlife Federation 151 Tremont Street Boston, Massachusetts' 02111 Plyrroutn Public Library North Street Plymouth, Massachusetts 02360
~ Resident Inspector:
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' C. Sox 867 Plyrouth, Massachusetts 02360 9
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..-e va Ref. 1:
3ECo letter (A. V. Morisi) to NRC (T.
A. Ippolito), dated Sovember 5,1980 Ref. 2:
3ECo let:er (G. C. Andognini) to NRC (D. L. Zie: ann), dated Nove=ber 15, 1976 Ref. 3:
3ECo le::er (G. C. Andognini) to NRC (D. K. Davis), dated Augus: 8, 1977 J
Ref. 4:
NRC le t t e r
('w'. G. Ga==ill) : all Power Reactor Licensees dated Augus: 5, 1979 1.
Per Guideline 1, Ref. 4, sub=1: an analysis fer the 23 KV connection (second of f site source) through the shutdown ::ansformer to :he Class
- .ouses.
3 2.
Provide the canufacturers recc= ended =ini=u: starting ecl: age for all Class lE loads.
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7:: vide the voltage drops fro the Class 1E buses to the tar =inals of
.u,.,e.,ne.) :cr a.:..
cases ana.,y ed.
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a.
c ass,_:,cac.s (,ne:.
n e:ine the plan: opera in; code and the leading cf the Class lE buses f:: the condi:icas iden:ified as " Full load" and "No 1 cad' in Ref. 2, 5.
?e: Cuideline 3, Ref. ', p;cvide an analysis cf the effect on all Class
- I equipnen
- when startint and runnin: the lar es: non-Class lE load
.cadec..
u c u r,.n g a
,_C. A.
. so su.-
- he u-, ass.
buses are heav, -.;
wher ni: a ::ansien analysis for bulk C' ass II lead s:arting (ne secuen-
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=.a.
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- a;:nf-leve'. Of undervo'.:aze prote::icn relaysic.c: d:cp ou: during
- nese lead starting : ndi: ions.
The star-ing of :ne larges: non-Class lE load *.ill have an effec: on the Class lE bus v ltage regardless of f
the load location.
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S. VASGUPTA J.LA7.EVNICK I
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