ML20135H800

Procedure CP.102 Re Normal Cooldown

ML20135H800
Person / Time
Site:	Rancho Seco
Issue date:	04/12/1985
From:	SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
Shared Package
ML20135H794	List: ML20135H793 ML20135H797 ML20135H800 ML20135H803 ML20135H807 ML20135H809 ML20135H812
References
CP.102, TAC-57558, NUDOCS 8509240242
Download: ML20135H800 (1)

Text

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CP.102 -

NORMAL COOLDOWN . . -

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'l.0 START RCPs.

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.1 -E any RCPs are running, THEN go to Step 2.0, otherwise continue.. . Il y ' iI.

)~ .2 E natural circulation is in progress,' =THEN st' art RCPs'per OP- A32,CRCP.ib'En : l' 5 One operating RCP per loop is desired. .' Ou e 6 2: I

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i 2.0 E TWO OTSGs ARE IN SERVICE. THEN TO GO OP B.4, SECTION 5.0,' OTHERWISE i> Id.' ";i i CONTINUE. L ' ' -

.1 E RCPs ARE NOT AVAILABLE GO TO OP B.4 SECTION 6.0. '

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3.0 PREPARE FOR COOLDOWN WITH A ORY OTSG. 10 PRETT ~ilJ

.1 Calculate the existing tube to shell AT for the dry OTSG. '

- C ARllm ' d AT = Sum OTSG Shell T/C -Tcold #* '"'

l( number of T/Cs '

y a

AT = F. This value must not exceed + 100*F. C 4 OR 1

! Computer point G-613 ( A OTSG) and G-614 (B OTSG). < ::L i-I j .2 When the a T, as determined in Step 3.1 above, is <100*F, open the ' "> ,

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bypass valves in the operable OTSG and commence cooldown. 00 NOT exceed it- ,: n

. 100*F tube to shell AT on the dry OTSG. -W t i

l .3 If reactor coolant flow is by natural circulation, use the auxiliary ' - -

spray from the HPI system if spray water to pzr AT < 410*F or the EMOV _

to depressurize the RCS. '

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i 4.0 E A SMALL BREAK LOCA HAS OCCURRED, THEN GO TO CP.103, STEP 11.0, 1  : ' 5'

! OTHERWISE CONTINUE. - .! 'I 5.0 GO TO OP B.4, SECTION 5.0, OR 8.4 SECTION 6 IF ON NATURAL CIRCULATION. e

, END i 92gO 2 CP.102-1 4

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