ML20028B193
| ML20028B193 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 11/23/1982 |
| From: | Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE, YANKEE ATOMIC ELECTRIC CO. |
| To: | Knighton G Office of Nuclear Reactor Regulation |
| References | |
| SBN-382, NUDOCS 8211300156 | |
| Download: ML20028B193 (4) | |
Text
.
suam sum IPUEBUC SERVICE Engineering omm Companyof New W 1671 Worcester Road Framinoham, Massachusetts 01701 (617) - 872 - 8100 November 23, 1982 SBN-382 T.F. B7.1.2 United States Nuclear Regulatory Commission Washington, D. C.
20555 Attention:
Mr. George W. Knighton, Chief Licensing Branch No. 3 Division of Licensing
References:
(a) Construction Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 (b) USNRC Letter, dated April 26, 1982, " Request for Additional Information - Seabrook Station, Units 1 and 2,"
P. J. Miraglia to W. C. Tallman
Subject:
Response to RAI 440.118; (Reactor Systems Branch)
Dear Sir We have enclosed a response to the subject Request for Additional Information which was forwarded in Reference (b).
This response will be included in OL Application Amendment 48.
Very truly yours, YANKEE ATOMIC ELECTRIC COMPANY J. DeVincentis %
Project Manager ALL/fsf cc: Atemic Safety and Licensing Board Service List go ol 8211300156 821123 PDR ADOCK 05000443
^
ASLB SERVICE LIST Philip Ahrens, Esquire Assistant Attorney General Department of the Attorney General Augusta, ME 04333 Representative Beverly Hollingworth Coastal Chamber of Commerec 209 Winnacunnet Road Hampton, NH 03842 William S. Jordan, III, Esquire Harmon & Weiss 1725 I Street, N.W.
Suite 506 Washington, DC 20006 E. Tupper Kinder, Esquire Assistant Actorney General Office of the Attorney General 208 State House Annex Concord, NH 03301 Robert A. Backus, Esquire 116 Lowell Street P.O. Box 516 Manchester, NH 03105 Edward J. McDermott, Esquire Sanders and McDermott Professional Association 408 Lafayette Road Hampton, NH 03842 Jo Ann Shotwell, Esquire Assistant Attorney General Environmental Protection Bureau Department of the Attorney General One Ashburton Place, 19th Floor Boston, MA 02108
440.118 Concerning your response to Q440.49, expand the response to i
indicate the power supplies for the listed instrumentation. Also, it is our position that low floe alarms.in control room should be provided for ECCS pumps (SI pumps, charging pumps and RHR pumps) discharge flows for pump protection. These low flow alarms should be powered from essential power supplies.
RESPONSE
The power supplies for the instrumentation listed in the response to RAI 440.49 are as follows:
Instrument Instrument I.D.
Power Supply CCP discharge SI-FT-917 UPS-1-I-1A or header flow MCC-1-E531 BIT discharge SI-PT-947 UPS-1-I-ID or pressure MCC-1-E531 CCP circuit 125 V de Dist. Panel breaker position 111A and 111B indication CCP breaker Non-vital UPS 2A i
trip alarm and 2B CCP amperage Bus E5 and E6 SIP discharge SI-PT-919 UPS-1-I-lD or pressure MCC-1-E531 SI-PT-923 UPS-1-I-lc or t
MCC-1-E-E531 SIP discharge SI-FT-918 UPS-1-I-ID or flow MCC-1-E531 SI-FT-922 UPS-1-1-1C or MCC-1-E531 SIP circuit 125 V de Dist. Panel breaker position 111A and 111B indication SIP breaker Non-vital UPS 2A trip alarm and 2B SIP amperage Bus E5 and E6 RHR return line RH-FT-618 UPS-1-I-1A or flow to RCS cold MCC-1-E531 legs RH-FT-619 UPS-1-1-1D or MCC-1-E531 l
1
Instrument Instrument I.D.
Power Supply RHR pump RH-PT-61*
UPS-1-I-lD or discharge MCC-1-E531 pressure RH-PT-615 UPS-1-I-lC or MCC-1-E531 RHR pump circuit 125 V de Dist. Panel breaker position 111A and 111B indication RHR pump breaker Non-vital UPS 2A trip alarm and 2B CS pump discharge CB S-PT-2313 UPS-1-1-4 or pressore MCC-1-lll CBS-PT-2315 UPS-1-I-4 or MCC-1-lli CS pump circuit 125 V de Dist. Panel breaker position 111A and 111B indication CS pump breaker Non-vital UPS 2A trip alarm and 2B CS pump amperage Bus E5 and E6 Relative to low flow alarms for ECCS pumps, as stated in the response to RAI 440.18, low flow alarms will be provided for the j
RHR pumps. Additionally, a revised design for the charging pumps' mini-flow system is presently being implemented to assure minimum required pump flow under all conditions. Included, also, in this design are low flow alarms. Low flow alarms will also be provided for the safety injection pumps should inadequate flow result following closure of the pump recirculation valves to the RWST.
i All of the above alarms will be powered from essential power supplies.
l i
i i
-vv
.,-e
---,..~,--n.+,,-y,=-n---.--n--
--,n.
me
-w
-v.-,--
---yy
=
,-----e-----