ML20128N068
| ML20128N068 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 10/03/1996 |
| From: | Whits T ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17264A686 | List: |
| References | |
| PROC-961003, NUDOCS 9610160282 | |
| Download: ML20128N068 (5) | |
Text
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O EC':
REV: 5
.ATT-10.0 ATTACHMENT FAULTED S/G PAGE 1 of 2 WA4 !
t Date /d-3-$
Responsible Manager
/
Dispatch AO with locked valve key to complete local isolation of faulted S/G as follows:
NQTE:
Intermediate Building environment should be assessed for radiological or other personnel safety concerns.
-1.
Request identification of faulted S/G from Control Room.
NOTE:
Steps may be done in any order, 1
2.
Verify faulted S/G MSIV bypass valve closed (INT BLDG steam header area) o S/G A, V-3615
-O R-o S/G B, V-3614 3.
Isolate steamlines for the faulted S/G:
o Steam sampling system (INT BLDG steam header area) o S/G A, close V 3413A O R-0 S/G B, close V-3412A o
Support heating steam (INT BLDG steam header area) o S/G A, close V-3669 O R-0 S/G B, close V 3668 o
Upstream trap'3 (TURB BLDG east of MFW regulating valves) o S/G A, close V-3521 OR-0 S/G B, close V 3520 9610160282 961003 PDR ADOCK 05000244 Y
goes ritLE:
REV: 5 1
I i
$TT-10.0 ATTACHMENT FAULTED S/G PAGE 2 of 2 O
CAUTION CONTROL ROOM SHOULD BE NOTIFIED BEFORE ISOLATING TDAFW PUMP l
STEAM OR FEED FLOW.
4.
'..,cally CLOSE TDAFW pump steam root valves o
S/G A, V-3505
-O R-0 S/G B, V-3504 5.
Locally close TDAFW pump feed header isolation valve for affected S/G:
o S/G A, V-4005 (steam header west end on catwalk by CNMT wall)
I
-O R-0 S/G B, V-4006 (Main steam header east end by stairs) 6.
Locally close MFW regulating valve and bypass valve outlet isolation valves for the faulted S/G:
o S/G A, V-3987 and V,991
-O R-o S/G B, V-3986 and V-3990
k3 go :
rirtt:
REVi 6
'ATT-16.0 ATTACHMENT RUPTURED S/G PAGE 1 of 3 O
Responsible Manager Lov/[L J
Date /d-3-9/,
/
NOTE:
Intermediate Building environment should be assessed for radiological and other personnel safety concerns.
PART A.
Dispatch AO with locked valve key to complete localisolation of l
ruptured S/G as follows:
l NOTE:
Steps may be done in any order for PART A.
l CAUTION l
CONTROL ROOM SHOULD BE NOTIFIED BEFORE ISOLATING TDAFW PUMP l
STEAM OR FEED FLOW.
1)
Verify BOTH S/G MSIV bypass valves closed (INT BLDG steam header area):
o S/G A, V-3615 o
S/G B, V-3614 l
l 2)
Locally close TDAFW pump steam root valves o
S/G A, V-3505
-O R-O S/G B, V 3504 l
3)
Locally close the following steam valves from the ruptured S/G:
l o
Steam to sampling system valve (INT BLDG steam header area):
S/G A, close V-3413A O R-S/G B, close V 3412A l
l 0
Support heating steam valve (INT BLDG steam header area):
I S/G A, close V 3669
-O R-
>0 s'o 8.ci v see8 l
EOP:
ilfLE REV: 6 i
$TT-16.0 i
ATTACHMENT RUPTURED S/G PAGE 2 of 3 f~
\\
o Upstream trap isolation valve (TURB BLDG near MFW reg vivs):
S/G A, close V-3521
-O R-S/G B, close V 3520 4)
Locally close TDAFW pump manual feedwater isolation valve to ruptured S/G (INT BLDG steam header area):
S/G A, V 4005
-O R-S/G B, V-4006 k
5)
Bypass condensate polishing demineralizers as follows:
1 1.
Place AVT bypass valve controller in MANUAL (east end of AVT panel).
I 2.
Open bypass valve.
3.
Isolate _A.LLiinservice demineralizers as follows:
a)
Place the Mixed Bed Service Selector switch to override AND select the bed to be removed from service.
j b)
Place the 4 position selector switch for the selected bed to OFF.
l c)
Repeat steps a and b for each inservice bed.
]
i 6)
Locally place TURB RM WALL EXH FAN switches to CLOSE.
7)
Locally place TURB RM ROOF VENT switches to CLOSE.
l CAUTION l
PART B OF THIS ATTACHMENT SHOULD ONLY BE PERFORMED IF RUPTURED
)
S/G MSIV CANNOT BE CLOSED.
1 PART B.
Dispatch AO to locally perform the following when ruptured S/G MSIV cannot be closed, if areas are accessible:
l 1)
Close Air Ejector / Gland steam root valve, V-3540 (Main steam header TURB j
BLOG).
2)
Close flange heating isolation valves, MOV-3601 A and MOV 3602A.
tops ilfLE:
REW 6 ATT-16.0 ATTACHMENT RUPTURED S/G PAGE 3 of 3 l
\\
3)
Notify Control Room that main flowpaths are isolated, THEN complete isolation by closing the following valves:
NOTE:
Substeps may be done in any order.
a)
MFW regulating valve and bypass valve manualisolation valves for both S/Gs:
o S/G A, V-3985 and V-3989 l
o S/G B, V-3984 and V-3988 l
b)
Reheat steam chain valves:
l 0
1 A MSR, V-3551 l
0 18 MSR, V-3550 0
2A MSR, V-3553 o
28 MSR, V-3552 c)
Steam dump header isolation and bypass valves (Main steam header TURB BLDG on platform overhead) o V-3532 and V-3659 o
V-3533 and V-3658 d)
Reheat steamline warmup valves (warmup vivs located east end of 1 A and 2A MSRs TURB BLDG middle floor):
l o
V-3645 o
V-3646 o
V 3647 o
V-3648 e)
Reheat steamline common vent, V-8500 (at condenser north of 1 A l
MSR).
l f)
Steam to trap header isolation valves o
V-8513 (Main steam header TURB BLDG) o V-8529 (south side EH skid) o V-8510 (south side EH skid) s l
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