ML17250B126
| ML17250B126 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 04/09/1990 |
| From: | Widay J ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17250B096 | List:
|
| References | |
| FR-H.2, NUDOCS 9004200743 | |
| Download: ML17250B126 (12) | |
Text
EOP:
FR-H.2 T17t.E:
RESPONSE
TO STEAM GENERATOR OVERPRESSURE REV:
2 PAGE.1 of 6 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE SUPERINT D NT EFFECTIVE DATE QA~ NON-QA CATEGORY 1.0 REVIEWED BY:
GiNNA PjTATION 8! P,RT:
DATF T!i~'
9004200743 9004jp +i
, PDR ADOCg PgPPPP44~
PNU II 1 liUIE.
FR-H.2
RESPONSE
TO STEAM GENERATOR OVERPRESSURE REV 2
PAGE 2 of 6 A.
PURPOSE This procedure provides actions for an overpressure condition affecting any S/G where pressure has increased above the highest steamline safety valve setpoint.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
ENTRY CONDITIONS This procedure is entered from:
a.
F-0.3, HEAT SINK Critical Safety Function Status
- Tree, on a YELLOW condition.
EOP:
FR-H.2 TITLE:
RESPONSE
TO STEAM GENERATOR OVERPRESSURE REV 2
PAGE 3 of 6 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
o Throughout this procedure, "affected" refers to any S/G in which pressure is greater than 1140 psig.
o Adverse CNMT values should be used whenever CNMT pressure is greater than 4 psig or CNMT radiation is greater than 10
~ R/hr.
1 Identify Affected S/G(s):
a.
Any S/G pressure
- GREATER THAN 1140 PSIG
- a. Return to procedure and step in effect.
2 Verify FW Isolation To Affected S/G(s):
a.
MFV pumps
- TRIPPED b.
MFV flow control valve(s)-
CLOSED
- a. Trip MFV pumps.
- b. Manually close valves.
~
MFW regulating valve(s)
~
MFW bypass valve(s) c.
MFW pump discharge valve(s)
CLOSED
- c. Manually close valves.
3 Check Affected S/G(s)
Narrow Range Level LESS THAN 90%
I'85% adverse CNMT]
Go to FR-H.3,
RESPONSE
TO STEAM GENERATOR HIGH LEVEL, Step l.
EOP:
FR-H.2 TITLE:
RESPONSE
TO STEAM GENERATOR OVERPRESSURE REV 2
PAGE 4 of 6 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION IF AFFECTED S/G NARROW RANGE LEVEL INCREASES TO GREATER THAN 90X [85X ADVERSE CNMT], THEN STEAM SHOULD NOT BE RELEASED PROM THE AFFECTED S/G(S).
4 Try To Dump Steam From The Affected S/G(s):
o Open S/G ARVs
-OR-Go to Step 6.
o Open MSIV bypass valves
-OR-o Open steam supply valves to TDAFW pump 5
Check Affected S/G(s)
Pressure:
- a. Pressure
- DECREASING
- b. Pressure
- LESS THAN 1140 PSIG
- c. Control steam release to maintain S/G pressure less than 1140 psig
- d. Return to procedure and step in effect a.
Go to Step 6.
- b. Return to Step 3.
EOP:
FR-H.2
. TITLE
RESPONSE
TO STEAM GENERATOR OVERPRESSURE REV 2
PAGE 5 of 6
STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION APW FLOW SHOULD REMAIN ISOLATED TO AFFECTED S/G(S)
UNTIL A STEAM RELEASE PATH IS ESTABLISHED.
6 Close AFW And SAFW Flow Control Valves To Affected S/G (s) o S/G A Stop pumps feeding affected S/G(s).
~ MOV-4007 and AOV-4480, MDAFW pump
~ AOV-4297, TDAFW pump
~ MOV-9701A, SAFW pump o
S/G B
~ MOV-4008 and AOV-4481, MDAPW pump
~ AOV-4298, TDAFW pump
~ MOV-9701B, SAFW pump 7
Check RCS Hot Leg Temperatures LESS THAN 535'F Cool down RCS to less than 535'P by dumping steam from the unaffected S/G.
EOP:
FR-H.2 TITLE:
RESPONSE
TO STEAM GENERATOR OVERPRESSURE REV:
2 PAGE 6 of 6 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 8
Continue Attempts To Manually Or Locally Dump Steam From Affected S/G(s):
o Open S/G ARVs
-OR-o Open steam supply valves to TDAPW pump
-OR-o Dispatch AO to perform the following:
a.
Open affected S/G MSIV bypass valve Open both priming air ejector steam isolation valves
~ V-3580
~ V-3581 9
Return To Procedure And Step In Effect
-END-
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