ML20204J707

Rev 2 to Emergency Operating Procedure E-2, Faulted Steam Generator Isolation

ML20204J707
Person / Time
Site:	Millstone, Haddam Neck, 05000000
Issue date:	06/03/1988
From:	CONNECTICUT YANKEE ATOMIC POWER CO.
To:
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ML20204H467	List: A07413, Forwards Specific Emergency Operating Procedures for Use During Incident Response Ctr Activation ML20204H704 ML20204H734 ML20204H868 ML20204H928 ML20204H963 ML20204J027 ML20204J039 ML20204J092 ML20204J109 ML20204J115 ML20204J120 ML20204J128 ML20204J133 ML20204J139 ML20204J147 ML20204J497 ML20204J543 ML20204J565 ML20204J627 ML20204J633 ML20204J638 ML20204J642 ML20204J659 ML20204J669 ML20204J685 ML20204J707 ML20204J733 ML20204J739 ML20204J746 ML20204J767 ML20204J781 ML20204J786 ML20204J814 ML20204J824 ML20204J849 ML20204J853 ML20204J865 ML20204J878 ML20204J902 ML20204J914 ML20204J920 ML20204J939 ML20204J947 ML20204J954 ML20204J958 ML20204J965 ML20204J975 ML20204J982 ML20204J994 ... further results
References
E-2, NUDOCS 8810250223
Download: ML20204J707 (3)

Text

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JUN 3 1988

', I511MBER 1TI1E REV. ISSUE /DATE E.2 FAULTED STCAM GENERATOR Rev. 2

ISOLATION I

A. PURPOSE This procedure provides actions to identify and isolate a faulted steam generator.

B. SYMPTOMS OR ENTRY CONDITIONS This procedure is entered from:

1. E.0, REACTOR TRIP OR SAFETY INJECTION, Step 21 with the following symptoms: 1 I

a. Any SG pressure decreasing in an uncontrolled manner.

b. Any SG completely depressurized.

2. E 1, LOSS OF REACTOR OR SECONDARY COOLANT, Step 2, E-3, STE AM GENERATOR TUBE RUlrrURE, Step 6, ECA-3.1, SGTR WITH LOSS OF REACTOR COOLANT - SUBCOOLED RECOVERY DESIRED, Step 7, ECA 3.2, SGTR WITH LOSS OF REACTOR COOLANT - S ATURATED RECOVERY DESIRED, Step 3, with the following symptoms and/or conditions:

a. Any SG pressure decreasing in an uncontrolled manner,

b. Any SG completely depressurized.

c. Faulted SG isolation not verified.

3. FR H.5, RESPONSE TO STEAM GENERATOR LOW LEVEL, Step 3, when the affected SG is identified a: faulted.

4. Other pro.Jurcs whenever a faulted 30 is identified.

i 8010250223 001007 Page 1 of 3 PDR ADOCK 05000213 P PUR L

JUN 3 B88 NUhBER TTTLE REV. ISSUE /DATE E2 FAULTED STEAM GENERATOR Rev. 2 ISOLATION ST3.P ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED r 7 CAUTION: o AT LEAST ONE SG MUST BE MAINTAINED AVAllABLE FOR RCS COOLDOWN.

o ANY FAULTED SG OR SECONDARY BREAK SHOULD REMAIN ISOLATED DURING SUBSEQUENT RECOVERY ACTIONS UNLESS NEEDED FOR RCS COOIDOWN.

L J 1 CliECK MAIN STEAMLINE ISOLATION MANUALLY CLOSE VALVES AND BYPASS VALVES OF AFFECED SG(s) CLOSED 2 CHECK FOR AT LEAST ONE INTACT SG:

a. Check pressures in all SGs - a. IE all SG pressures decreashg in an ANY STABLE OR INCREASING uncontrolled manner, THEN GD IQ ECA-2.1, UNCONTROLLED DEPRESSURIZATION OF ALL STEAM GENERATORS, Step 1.

3. IDENTIFY FAULTED SG(s):

a. Check pressures in all SGs - a. QQ IQ Step 5, Ab'R search for initiating break:

o ANY DECREASING IN AN UNCONTROLLED MANNER o Main steamlines o Main feedlines l .QR o Other secondary piping o ANY COMPLETELY DEPRESSURIZED l

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, JijN 3 1988 NUMBER TTTIE REV. ISSUE /DATE E2 FAULTED STEAM GENERATOR Rev. 2 ISOLATION s

i STEP ACT10N/E,XPECTED RESPONSE RESPONSE NOT OBT AINED 4 ISOLATE FAULTED SG(s):

(SEE OPPOSITE PAGE)

a. Manually close the following valves: a. Dispatch operator to locally close valves, o Main feedline MOV o Feedwater bypass AOV i o Main steamhne trip valve  !

b. Dispatch operator to lo dly close the following valves: i o Steam supply tc sanospheric vent and turbine ddven AFW pump o Steamline low point dram valves o Check steamline vent valve closed o Steam generator blowdown valve 5 GIECK DWST LEVEL GREATER START MAKEUP TO DWST.

THAN 54,000 GALLONS 6 GiECK SECONDARY RADIATION QQIQ 5 3, ,

INDICATES BACKGROUND STE AM GENERATOR TUBE i RUPTURE, Step 1.

7 QQ IQ E 1, LOSS OF REACTOR OR SECONDARY COOLANT, Step 1

, END ,

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