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

_,

j

!j 1

j 04-12-85 Original WP0010F

[<';

~

0-0058P i

t CP.102 NORMAL COOLDOWN 1, !

I I.

.I,

'l.0 START RCPs.

- I.'

~' W 4

.1

-E any RCPs are running, THEN go to Step 2.0, otherwise continue...

Il y ' i I.

)~

.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

+'

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.

KW ' '

l-

,l.

.4 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 i,:

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.

u' 5'

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

OTHERWISE CONTINUE.

'I 5.0 GO TO OP B.4, SECTION 5.0, OR 8.4 SECTION 6 IF ON NATURAL CIRCULATION.

e END 92gO 2

CP.102-1 i

P e

4 r

F k

f i

.,,_.,.._.-.__-mm---.-,---_,..-_,

-._-.,___.-.--_,_.---.-_..._-4.

_, ~. -

--,_.,_...m

,,, _ _,..i