ML20204K052

Rev 2 to Emergency Operating Procedure FR-Z.1, Response to High Containment Pressure

ML20204K052
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Site:	Millstone, Haddam Neck, 05000000
Issue date:	06/03/1988
From:	CONNECTICUT YANKEE ATOMIC POWER CO.
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References
FR-Z.1, NUDOCS 8810250328
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Text

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JUN' 31986 1

NUMBER mu REV. ISSUE /DAR F R.Z.1 RESPONSE TO HIGH CONTAINMENT Rev. 2 PRESSURE

(

A.

PURPOSE nis procedure provides acdons to respond to a high containment pressure.

B.

SYMPTOMS OR ENTRY CONDITIONS nis procedure is entered frorn F-0.5, CONTAINMENT Crideal Safety Funcdon Status Tree on a RED or ORANGE condition.

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Page 1 of 3 8810250320 081007 PDR ADOCK 05000213 p

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JUN 3 1988 NUMBER TTT12 P2V. ISSUE /DATE FR.Z.1 RESPONSE TO HIGH CONTAINMENT Rev.2 PRESSURE I

STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 1

VERIFY CONTAINMENTISOLATION IE FLOW PATH b'QINECESSARY, VALVES CLOSED THEN CLOSE VALVES.

(SEE OPPOSITE PAGE) 2 CHECK IF CONTAINMENT SPRAY IS REQUIRED:

a. Check containment pressure -

a QQIQ Step 3.

GREATER THAN 40 PSIO

b. Check two LPSI pumps -

b, Open RII MOV 31 RUNNING (fire main to containment spray),

WTEN containment pressure dect:ases to 35 PSIO.

11EN close RH MOV 31.

c. Open containment s xay valves Ril MOV 23 and Rfi MOV 34 WlEN containment pressure decreases to 35 PSIO.

THEN close containment sway valves RH MOV 23 and RH MOV 34 3

VERIFY CARFANs RUNNING IN PERFORM "ITIE FOLLOWTNG:

EMERGENCY MODE %Tni SERVICE WATER FLOW

a. Place face damp contml switches ESTABLISIED in the test posinon.

b. Manually start all available CARFANs.

c. Verify service water flow to exh containment CARFAN cooler.

4 CLOSE MAIN STEAMLINE LOCAL 1Y CLOSE MAIN STEAMLINE TRIP VALVES NON RETTJRN VALVES.

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JUN 3 1986 5MiBER TIT U REV. ISSUE /DATE i

FR Z.1 RESPONSE TO IIIGli CONTAINh!ENT Rev.2 PRESSURE

(

STEP ACT10N/ EXPECTED RESPONSE RESPONSE NOT OBTAINED r

7 CAUTION:

AT LEAST ONE SG MUST BE MNNTAINED AVNLABLE FOR RCS COOLDOWN.

L J

5 CllECK IF FEEDWATER FLOW SHOULD BE ISOLAED TO ANY SG:

a. Check pressures in all SGs -

a. QQ IQ Step 6.

o ANY SG DECREASING IN AN UNCONTROLLED htANNER o

ANY SG COhtPLETELY DEPRESSURIZED

b. Isolate feedwater flow to affected SGs:

o Isolate main feedwater o

Isolate AUX feedwater 6

.'lIECK CONTAINMENT alYDROGEN CONCENTRATION:

a. Current hydrogen concentration

a. Otuin a PASS containment measurement AVAILABLE atmospheric sample and measure hydrogen concentration.

7 NOTIFY PLAST ENGINEERING STAFF OF IIYDROGEN CONCENTRATION IN CONTAINhtENT 8

Bell!RNIQ PROCEDURE AND STEP IN EFFECT EST) l l

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