ML20205B480

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Rev 2 to Emergency Operating Procedure EOP 35 ES-1.4, Transfer to Hot Leg Recirculation
ML20205B480
Person / Time
Site: Millstone, Haddam Neck, 05000000
Issue date: 06/15/1988
From:
CONNECTICUT YANKEE ATOMIC POWER CO.
To:
Shared Package
ML20204H467 List: ... further results
References
EOP-35-ES-1.4, NUDOCS 8810260252
Download: ML20205B480 (6)
v • d • e


Text

_ _ _ _ _ _ _ _ _

Stephen E.

aco 3-31-87 87-M t

Fora Approved by Stativa Superintsndsr.c Effective 0 he 50RC Mtg. No.

STATION PROCEDURE COVER SHEET V

A.

IDENTIFICATION Humber: EOP 35 ES-1.4 Rev.

2

Title:

TRANSFER TO HOT LEG RECIRCULATION Prepared By: H. K. COVIN B.

REV!EW I have reviewed the above procedure and have found it to be satisfactory.

TITLE SIGNATURE DATE f !/ N DEPARTMENT HEAD hN f

w I

C.

SPECIFIC UNREVIEWED SAFETY QUESTION EVALUATION REQUIRED:

Modifies intent of procedure and changes operation of systems as described ir, design documents.

YES [ ]

NO [(

(If yes, perform written USQ determination an5000 gpm and can be run for only I hour at flows

>4600 gpm.

Excessive flows through the HX can cause tube failure.

_____1 Verify at least cae Si and Try to start a charging or one charging pump are SI pump.

IF no SI or charging running pumps running, consult the O

Director of Station Emergency Organization (DSEO) on how to establish hot les vectre. Go to step 3.

j 2

Align the Safety Injection System For Hot leg Recirculation 4.

CLOSE RHR Cold Leg Injection Vaives

( 3SIL* MV8809 A/ B) b.

STOP SI pump A c.

CLOSE SI pump A Cold Leg Injection (3Sth2MV8821A) 4.

OPEN SI pump A to Hot leg Injection (3SlH*MY8802A) e.

START SI pump A ON--

f.

STOP SI pump B 4

CPkE41 3 34

TRANSFfR TO HOT LEG KECIkCULAIloN EUP 35 ES-1.4 Page 4 Rev. 2

,3 (v)

STEP ACTIONS EXPECTED RESPONSE RESPONSE NOT CSTAINED g.

CLOSE SI pump B Cold Les Injection (3SIH*MV88218) and SI Cold Leg Master Isolation valves (351H*MV8835) h.

OPEN SI pep B to llot Les Injection (3SIH'MV8802B) i.

START SI purnp B j.

Vertfy discharge flow l

for 51 pumps A and B l

1 3

Return to procedure and step in effect

-FINAL-O l

l i

i I

m.,..

e i

E0P 35 ES-1.'<

Rev. 2 K.

/

FOLDOUT FOR EOP 35 E-1 SERIES PROCEDURES 1.

SI REINITI/. TION CRITERIA Manually operate SI pumps as necessary IF EITHER condition listed l

below occurs a.

RCS subcooling based on core exit TCs - <30*F (90*F FOR ADVERSE CONTAINMENT)

- OR -

b.

PZR level - CAN NOT BE MAINTAINED >7% (50% FOR ADVERSE CONTAINMENT) 2.

_RF' P/.TH

SUMMARY

SUBCRITICALITY - Nuclear power >5%

JORE COOLING - Core exit TCs'>1200*F HEAT SINK -

Narrow range level in all SGs <4% (34% FOR ADVERSE CONTAINMENT) A@ total feedwater ficw

<525 gpm.

d.

INTEGRITY -

Cold leg temperature decrease >100*F in last 60 minutes AND RCS cold leg temperature <252*F e.

CONTAINMENT - Containment pressure >60 PSIA 3

SECONDARY INTEGRITY CRITERIA Go to E0P 35 E-2, FAULTED STEAM GENERATOR ISOLATION, Step 1, IF EITHER condition listed below occurs

[ '}

a.

Any SG pressure is decreasing in an uncontrolled manner, AND has

\\m,/

NOT been isolated.

- OR -

b.

Any SG has completaly depressurized, AND has NOT been isolated.

4.

E-3 TRANSITION CRITERIA Go to E0P 35 E-3, STEAM GENERATOR TUBE RUPTURE, Step 1, IF any SG 1evel increases in an uncontrolled manner OR any SG has abnormal radiation.

5.

COLD LEG RECIRCULATION SWITCHOVER CRITERION Co to E0P 35 ES-1.3, TRANSFER TO COLD LEG RECIRCULATION, Scep 1, IF RWST level decreases to <520,000 gal.

6.

AFW SUPPLY SWITCHOVER C IITERION Establish the CST alternate AFW water supply IF DWST level decceases to <80,000 gal.

ps.

-

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