ML20096F089

Forwards Info Re Advanced BWR Hecw Sys to Replace Info Sent on 920429

ML20096F089
Person / Time
Site:	05200001
Issue date:	05/01/1992
From:	Geoffrey Miller GENERAL ELECTRIC CO.
To:	Burton B NRC
References
NUDOCS 9205200182
Download: ML20096F089 (4)

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From GE M;llet

- uaCoce34 175 Curtner Avenue San Jose, CA 95125 Phone FAY, (408) 925-1193 (408) 925-or (408) 925-1687-Subject N bo ok Ib SVS% ( -

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i NY 01 '92 02tOSPM G E tOCLEAR BLDG J P.2/3 l

.M M Sig.gdardflant _

23A6100AH nrv n (3) The system shall be designed and constructed controlled by a temperatum control valve. The l in accordance with Selsrnic Category 1, ASME .Msbel+mt-ess dr sig' j . tJLDMsion land-.-

code,Section III, Class 3 requirements. DhiseH owesw.speeweJy.

T One comprester-is -b-qcruthrg-anit, while the-other is on- l (4) The system shall be powered from Class 1E etandby, Condenscr coolitag is itom the i buses. corresponding division of RCW.  ;

(5) The HECW system sha!! be protected from Piping and valves for the HECW system, as missiles in accordance with Subsection well as the cooling water lines from the RCW i

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3.5.1. system, designed entirely to ASME Code,Section III, Class 3, Quality Group C, Quality Assurance (6) Design features to pr'eclude the adverse D requif ements. The extent of this effects of water hammer are in accordance clessification is up to and includicg drainage with the SRP section addressing the block valves. There are n primary or resolution of USI A 1 discussed in secondary containment penetrat ons wiC.dn the NUREO 0927. system. The HECW system is not expected to contain radioactivity.

These features shallinclude:

liigh temperature of the returned coolicy [ig water causes the standby cWeWiitt to start (a) an elevated surge tank to keep the system filledt automatically. Makeup water is supplied from the MUWP system, at the surge tank. Each surge (b) vents provided at all high points in the tank has the capacity to replace s', stem water systernt losses for snore than 100 days during an (c) after any system drainage, venting is U i assured by personnel training and 9.2.U.3 Safety Evaluation procedures; and The HECW system is a Seismic Category I (d) system valves are slew acting. system, protected from flooding and tornado missiles. All components of tbc system are (7) The HECW system shall be protected from designed to be operab!c during a loss of normal failures of high and medium energy lines .s power by connection to the ESF buscs. Redundant discussed in Section 3.6. components are provided to ensure that any single componen failure does not preclude sp.

90.132 System Description tem operatio . o system is designed to meet the requirements of Criterion 19 of 10CFR50.

The HVAC emergency cooling water system Each chiller is isolated in a separate room, consists of ri:L.a pbsystems in three isions. " " "^ ku +f two 50% 9.2.13.4 Testa and inspection p, M g,;g 3.g i

Y r units, twe 50% pumps, instrumentation and distribution piping and valves to corresponding Initial testing of the system toelubsg).weh a cooling coils. A chemical addition tank is formance testing of the eWert,,#pum-s and shared by all HECW divnions. Each HECW division coils for conformance with design capacity water shares a surge tank with the cor e o di r flows and heat transfer capabilities. An inte.

division of the RCW y tem. The 'a . grity test is perfortced on the system upon is designed to cool ... Loi iv.h m:h m compicJion, r chillmAu: de =Sthe4eet4ead-af-thespia ums3.ctroom.-wnh-one-chiller. The HECW syster is designed to permit periodic in. service inspt:ction gf all system AA Equipment is listed in Table 9,2 9. Each components to assure thb integrity and

, cooling coil has a three way valve controlled by capability of the system.

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a roots thermostat. Alternately, flow may be ,

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f1AY 01 ' '92 02109Pri G E t4JCLEAR BLDG J P. 3e's tusunT A + The only non-sarety-related portions of the HECW divisions are the chemical addition tank and the piping from the tank to the safety related valves which isolate the safety re-lated portions of the system.

AA The system is shown in Figure 9.2-3. The refrigerators are located in the control building as shown in Figures 1.2-20 and 1.2-21. This system shares the RCW surge tanks which are in the reactor building as shown in Figure 1,2-12.

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