ML19323A896

Emergency Procedure 2-AP-22.7, Loss of Emergency Condensate Storage Tank.

ML19323A896
Person / Time
Site:	North Anna
Issue date:	11/29/1979
From:	Harvey S VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
Shared Package
ML19323A861	List: ML19323A860 ML19323A863 ML19323A865 ML19323A871 ML19323A874 ML19323A878 ML19323A883 ML19323A896 ML19323A897
References
2-AP-22.7, NUDOCS 8005060185
Download: ML19323A896 (5)

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11-29-79 L. . . . .

VIRGINIA ELECTRIC AND POWER COMPANY NORTH A'.NA PO'4R STATION LWIT NO. 2 LOSS OF EtERGENCY CONDENSATE STOP. AGE TANK

REFERENCES:

1. T.S. 3.7.1.2, 3.7.1.3, 3.7.5.1

2. 12050-FM-74A

3. 12050-LSK-5-13A, B and C

4. 12050-ESK-5AA, SAB, 6PR, and 6CL

5. Final Safety Analysis Report k REV. PAGE DATE APPROVAL

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RECO. TEND APPROVAL: nu n[. . b ;q APPROVED BY: N . S.y -w CRAIPJ'ANJATION NUCLEAR S.?SETY A.'.T OPERATING CO.T!ITTEE DATE: 11-29-79 SAFETY RELATED

2-AP-22.7 Page 2 of 5 11-29-79 1.0 Purcose 1.1 This procedure provides indication of, probable causes for and immediate and long term operator actions to be taken in the event of a loss of the Emergency Condensate Storage Tank 2-CN-TK-1.

2.0 Indications 2.1 ECST lo/lo level alam.

2.2 LI-CN-200 indicates decreasing level.

2.3 PI-FV-203A, 203B and 203C indicate decreasing AIV Pump Suction -

Pressure.

NOTE: An AW Pump Suction Pressure of 4 PSIG indicates as ECST Level of approximately 9 feet, which is the lo/lo level alam setpoint.

3.0 Probable Cause 3.1 Water supply to ECST being depleted.

3.2 Rupture of 2-CN-TK-1.

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2-AP-22.7 Page 3 of 5 11-29-79 4.0 Im:nediate Operator Actions 4.1 None

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2-AP-22.7

Page 5 of 5 j 11-29-79 3

! Initials 5.0 Long Term Goerator Action (cont.)

5.9 If it is not desired to fill 2-CN-TK-1 from the firemain syste:n or the service water syste:n unlock and close the following valves:

2-W-145 (Normal Suction for 2-W-P-2).

2- W-162 (Normal Suction for 2- W -P-3A).

2-W-180 (Normal Suction for 2-W-P-3B) .

NOTE: Return auxiliary feedwater syste:n to normal by 2-AP-22.8.

Completed By:

Date:

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2-AP-22.7 Page 4 of 5 11-29-79 Initials 5.0 Long Term Ooerator Action NOTE: When level in emergency condensate storage tank reaches 9 feet (37.3% as read on LI-CN-200 in control room) or when suction pressure to aux feed water pumps reaches 4 psig, commence filling the emergency condensate storage tank.

5.1 Lineup either firemain or service water to supply auxiliary feed water as follows NOTE: Firemain or service water should be lined up to supply auxiliary feed water only in the event that 2-CN-TK-1 is unavailable or will become unavailable and all normal makeup sources to 2-CN-TK-1 are depleted, lost or insufficient and water MUST be added to the steam generator.

5.2 Open 2-FP-84 (Post Indicator Valve).

5.3 Close 2-FW-203.

5.4 Close 2-FW-176.

k 5.5 Unlock and open the following valves:

2-FW-147 (Alternate Suction for 2-FW-P-2).

i 2-FW-164 (Alternate Suction for 2-FW-P-3A). I i

2-FN-182 (Alternate Suction for 2-FW-P-3B).

5.6 If firemain is to be used start the desired fire pump.

NOTE: If 2-FP-02 is used actual water supply will be the S.W.

Reservoir. Firemain f rem the lake is the preffered l source of alternate mode up due to the chemistry of the, 1 S.W. Reservoir. l

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5.7 Unlock and open 2-FW-175. (Firemain supply to auxiliary feed ' d1*

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water).

5.8 If service water is to be used UNLOCK and OPEN 2-FW-202.

(Service water supply to auxiliary feedwater).

NOTE: If the service water reservoir is used as the source of 'k water it must be noted that the S.W. Pumps Lose Suction at a Reservoir Level of 305" 6". S.W. Reservoir Level must be maintained according to T.S. 3.7.5.1.