ML20214W716
| ML20214W716 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 09/29/1986 |
| From: | Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE |
| To: | Noonan V Office of Nuclear Reactor Regulation |
| References | |
| SBN-1206, NUDOCS 8610030192 | |
| Download: ML20214W716 (11) | |
Text
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September 29, 1986 SBN-1205 T. F.
B4.2.7 United States Nuclear Regulatory Commission Washington, DC 20555 Attention:
Mr. Vincent S. Noonan, Project Director PWR Project Directorate No. 5
Reference:
(a) Construction Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 Subj ect: Revisions to Seabrook Station FSAR
Dear Sir:
The following items have been identified as required changes to the Seabrook Station FSAR:
a) FSAR Section 10.4.7.2 (A) b) FSAR Table 6.2-83 c) FSAR Table 14.2-3, page 17 of 49 Enclosure I to this letter provides annotated FSAR pages showing the required changes. These changes will be incorporated into the Seabrook Station FSAR by a future amendment.
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Ve y truly yours, ir sv)
+
John DeVincentis
(
Director of Engineering i
Enclosure cc: Atomic Safety and Licensing Board Service List
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P.O. Box 300 + Seabrook, NH O3874. Telephone (603) 474-9521 L
- - Dicco Currco, E:quira Patar J. Mathswa, Mayer H:roon & Welco City Hall 2001 S. Street, N.W.
Newburyport, MA 01950 Suite 430 Washington, D.C.
20009 Judith H. Mizner Silvergate, Gertner, Baker, Sherwin E. Turk, Esq.
Fine, Good & Mizner Office of the Executive Legal Director 88 Broad Street U.S. Nuclear Regulatory Commission Boston, MA 02110 Tenth Floor Washington, DC 20555 Calvin A. Canney City Manager Robert A. Backus, Esquire City Hall 116 Lowell Street 126 Daniel Street P.O. Box 516 Portsmouth, NH 03801 Manchester, NH 03105 Stephen E. Merrill, Esquire Philip Ahrens, Esquire Attorney General Assistant Attorney General George Dana Bisbee, Esquire Department of The Attorney General Assistant Attorney General Statehouse Station #6 Office of the Attorney General Augusta, ME 04333 25 Capitol Street concord, NH 03301-6397 Mrs. Sandra Gavutis Chairman, Board of Selectmen Mr. J. P. Nadeau RFD 1 - Box 1154 Selectmen's Office Kennsington, NH 03827 10 Central Road Rye, NH 03870 Carol S. Sneider, Esquire Assistant Attorney General Mr. Angie Machiros Department of the Attorney General Chairman of the Board of Selectmen One Ashburton Place, 19th Flocr Town of Newbury Boston, MA 02108 Newbury, MA 01950 Senator Gordon J. Humphrey Mr. William S. Lord U.S. Senate Board of Selectmen Washington, DC 20510 Town Hall - Friend Street (ATTN Tom Burack)
Amesbury, MA 01913 Richard A. Hampe, Eng.
Senator Gordon J. Humphrey Hampe and McNicholas 1 Pillsbury Street 35 Pleasant Street Concord, NH 03301 Concord, NH 03301 (ATTN: Herb Boynton)
Thomas F. Powers, III H. Joseph Flynn, Esquire Town Manager Office of General Counsel Town of Exeter Federal Emergency Management Agency 10 Front Street 500 C Street, SW Exeter, NH 03833 Washington, DC 20472 Brentwood Board of Selectmen Paul McEachern, Esquire RFD Dalton Road Matthew T. Brock, Esquire Brentwood, NH 03833 Shaines & McEachern 25 Maplewood Avenue Gary W. Holmes, Esq.
P.O. Box 360 Holmes & Ells Portsmouth, NH 03801 47 Winnacunnet Road Hampton, NH 03842 Robert Carrigg Town Office Mr. Ed Thomas Atlantic Avenue FEMA Region I North Hampton, NH 03862 442 John W. McCormack PO & Courthouse Boston, MA 02109
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1 . charged to' the condensers. ' The drains from low pressure heaters No. 5, which also receive the cascaded drains from high pressure heaters No. 6, are piped to the heater drain tank. The condensate outlets from low pressure heaters No. 5 are mani-folded in a common header, along with the discharge of the two vertical heater drain pumps, which account for about 30 percent of the total feedwater flow at full power. The heater drain pumps take suction from the heater drain tank. A branch line off the common condensate header, before the steam packing exhauster, con-nects to the individual heater drain pump" suction lines to protect the heater drain pumps against low NPSH during transient conditions. The common condensate header distributes the flow equally to the p suction side of the two steam generator feed pumps, af ter passing through a flow measuring device located in each pump suction line. M These.are used to ' control the respective feedwater pump recircula-tion valves. Condensate is obtained from the condensate storage tank for hotwell h make-up upon receipt of a low level signal from the condenser hot- ' p, wells. Excess condensate is returned to the condensate storage g tank through a control valve upon receipt of a high level signal j from the condenser hotwells. g Demineralized water from the water treatment system, which serves i both units, can be introduced into the three condenser hotwells
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via the condensate storage tank. The condensate storage tank is y protected from freezing by a recirculation system which utilizes a heat exchanger and pump controlled by tank temperature. All con-densate' system connections to the condensate storage tankaare located above the tank level required for emergency plant shutdown (see Subsection 9.2.6). b. Feedwater System The feedwater system receives water from the condensate system and a portion of the heater drain system, (specifically, drains from high pressure heaters No. 6, low pressure heaters No. 5,, MSR shell drains and MSR reheater drains). The feedwater is pumped through the final stage of feedwater heaters (high pressure heaters No. 6) to the four steam generators. .The flow from the two 50 percent, variable speed, horizontal, tur-4 bine driven steam generator feedwater pumps combines into a common header that feeds two parallel high pressure heaters No. 6. The outlets from the high pressure heaters No. 6 are combined into a ~' coannon header for temperature equalization. From thl4 common header, an individual feedwater line supplies each steam generator. The flow through each individual feedwater line is controlled automati- / cally utilizing one of two feedwater regulator valves, one for low I power operation and one for loads from 15 percent to full power. The regulator valves are pneumatically operated and are designed 10.4-19 a
SB 1 &' 2 Amendme:t 59 FSAR May 1986 e TABLE 14.2-3 l (Sheet 17 of 49) 3 Acceptance Criteria The emergency feedwater system operates in accordance with the requirements of. FSAR Section 6.8. The emergency feedwater pump can operate for the 48-hour endurance run with a subsequent restart without exceeding the operational limitations listed in the plant operating procedures.- [ @eedwa'ter isolation valve closure times meet-Teeksi::1 S;;;iG... _ Table ] 2' requirements. 44 + 5 . Steam generator feeding capabilities under a simulated loss of offsite and l onsite ac power condition is demonstrated. w 45 g n. a _. - -}}