ML20204J128
| ML20204J128 | |
| Person / Time | |
|---|---|
| Site: | Millstone, Haddam Neck, 05000000 |
| Issue date: | 04/05/1988 |
| From: | CONNECTICUT YANKEE ATOMIC POWER CO. |
| To: | |
| Shared Package | |
| ML20204H467 | List:
|
| References | |
| EOP-3.1-50, NUDOCS 8810240545 | |
| Download: ML20204J128 (6) | |
Text
CONNECTICUT YANKEE ATOMIC POWER C Y
PROCEDURE COVER SHEET PROCEDURE NUMBER TITLE REV.NO.
ORGNOR P. Rainha l DATE 2/17/88 l DEPT.
TECHNICAL REVIEW l
li OPERATIONS d
M HEALTH PHYSICS ENGINEERING CHEMISTRY REACTOR ENGR.
SECURITY
[ MAINTENANCE STORES INST. & CONTROL CM C ADMIN.
RECORDS
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DEPARTMENT HEAD REVIEW
[YES COMPLETE / BIENNLAL REVIEW 7 NO PORC REVIEW REQUIRE 07 YES NO WJOR REVISON?
YESbNO ENVIRot# ENTAL IMPACT?
YES3NO YEShNO WRITTEN SAFETY EVALUATON ATTACHED?
YES2 N'A A CHANGE TO INTENT?
SAFETY EVALUATON REQUIRED 7 YEShNO UNREVIEWED SAFETYOUESTON?
YES3NO f]
APPROVAL j
~^*tD"T k
%%- as 7FS"lLA.A NRC MEETIN i No.
l BATE l PROCEDURE EJECTIVE DATE l REQUIRES UCENSED OPER ATOR REVIEW?
1 6(
l YES [ NO [
l
=
9 87 ACP 1.2 6.5, Attachment 8.1 i
i "a "1882 82a88L a P
PDR w
EOP 3.b50 Rev. 2 gg Connecticut Yankee n"*B'E.PA""'
""**d""
Operations LOSS OF MCC 5 1.0 DISCU3SION 1.1 This procedure applies to the operadon of the reactor plant at any time following a total loss of MCC - 5 and the steam generators are available for heat removal. This procedure does not apply if t w RCS pressure boundary integrity is breached.
2.0 SYhUrIOMS 2.1 Rx trip from Steam Flow / Feed Flow mismatch with a steam generator low level, caused by the tripping of both feedwater pumps on low suction pressure.
Auto auxiliary feedwater system will start.
2.2 loss of all RMS indications, no alarms.
2.3 ! ass of RCP seal water return flows, RCP lower bearing water temperatures and RCPlabyrinth APs.
2.4 loss of Plant Tavs meterindication.
2.5 Loss of a!! pressurimer temperature indications.
2.6 ! ass of pressurizer relief tank pressure, level and temperature indications.
2.7 loss of all red position indication, no rod bottom lights.
l 2.8 loss of ac control power to level 2 and level 3 undervoltare relays 27.W1 8, 27M/19,27T18 and 27T19. Initiates a " LEVEL 2 and IVEL 3 CHANNEL FAILURE" alarm for the associated bus.
2.9 Imlown valves so closed.
2.10 loss of auto makeup capability to VCT.
2.11 Power is lost to almost all plant MOVs.
2.12 SemiVitalbusesdeenergize.
2.13 Control air compressors stop.
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EOP 3.150 Rev 2 APR 5 1986 2.14 All containment isolation trip valves close on loss of control air.
2.15 "A" Battery charger deenergizes.
2.16 "MCC 5 less of voltage " alarm actuates.
l 3.0 AUTOMA~nC ACTIONS 3.1 Reactor trip and turbine trip.
l 3.2 Charging pump trips, after 65 second timers time out.
E l
l 3.3 Standby component cooling water pump starts.
l 4.0 IMhiEDIATE ACDONS 4.1 Stop all operating RCPs.
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4.2 Refer to E-0, REACTOR TRIP OR S AFETY INJECTION, Step 1.
5.0 SUBSEQUE.VT ACTIONS SH,E ACDONSXPECITD RESPOM$E RESPONSE NOT OBTAI'TD 5.1 Close seal water supply valves CH V 354A through 354D 5.2 locally open RWST to metering pump suction (BA MOV 386) and start the metering pump.
(Need control air to speed controller to increase flow above minimum) 5.3 Open service air to control air cmss connect valves (S A V-407 and CA V 121) 5.4 Line up well water to the closed cooling witer sptem in acconiance with AOP 3.2.0 5.5 Verify auto AUX feedwater wtuation:
- a. Auto AUX feedwater WLs -
- a. Perform the following:
i TRIPPED
- 1. Place defeat switches in the defeat position.
- 2. Manuany OR tocally start AUX feedw ater pumps.
- 3. GQ IQ Step 5.7.
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EOP 3.150 Rev 2 APR 5 1988 sIy.g ACTION /EXPECIED RESPONSE RESPONSE NOT OBTAINED i
5.6 Defeat Auto AUX feedwater.
- a. Place defeat switches in the defeat pos' tion
- b. Reset Auto AUX feedwaterWLs
- c. Manually start AUX feedwater
- c. locally start AUX feedwater pumps pumps.
5.7 Manually throttle feedwater bypass
[acally throttle feedwater bypass AOVs to control SG levels valve manual outlet isolation valves to control SG levels.
5.8 Open bypass valves for MSIV and non itturn valves and Hog Jet steam supply valves to vent steam to control RCS Tave.
5.9 Check RCS inventory remains
- E inventory is decreasing, approximately stable THEN;xrfonn 4e following to establisi a charging path:
- 1. Stop both charging pumps and place control switches in TPO.
- 3. Locally open BA MOV 373.
- 4. Check power available to MCC 8, then start one Charging Pump AUX oil aump 5.
Mace the Charging Pump UV Trip bypass switch, on the chargmg pump with the i
running AUX oil pump,in the
ass" position.
- 6. Start charging pump with the running AUX oil pump.
- 1 5.10 MonitcrVCrlevelandlocally drain VCT to the PDT to control VCTlevel 5.11 Verify turbine tube oil pump Start AUX oil pump.
operating and suppling turbe beanngs j
i t
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EOP 3.150 Rev 2 ER 5 1988 IIZE ACHONKXPECHD RESPONSE RESPONSE NOT OBTAINED 5.12 Place control svitches for letdown orifice isolation AOVs in the closed position (LD AOV 202,203 and 204) i 5.13 Close RCP thermal barrier manual isolation valve (CC V 841) 5.14 Stop all gas and liquid releases 5.15 Attempt to restore power to MCC 5 bylocally closing feed from Bus 6 QR Bus 5 5.16 Open RCP thermal banier trip Isolate control air by closing valves (CC TV 608, CC-TV 912 CA V 972, and CC-TV 913)
'ITIEN open CA V 971 to supply i
nitrogen to thermal barrier trip valves.
5.17 Check thermal barrier trip QQIQ Step 5.19.
valves n,
DEN s wly open thermal bamer manualisolation valve (CC V 841) to establish cooling flow 5.18 WHEN RCP lower bearing temperature is LESS DIAN 1700 F.,
2 4
IliES slowly establish seal water injection flow by throttling open CH V-354A thru 354D j
5.19 Continue to monitor plant IE power to MCC 5 can HQIbe conditions and try to restore
5.20 RFIURNID procedure and step in effect l
END 6.0 FOOTNOTES
'l M. V. JOHNSTON letter to E. J. MORCZKA, transmitting inspection No. 50 213/87 22, dated December 7,1987.
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l B
y
EOP 3.150 Rev.2 APR 51988 4
7.0
SUMMARY
OF CHANGES l
Step #
Changes Reasons Symptoms Deleted 2.7 and change 2.4 RPS modincations (PDCR 861) t, changed power supplies 3.2 Added time for chg pump trip Provide additionalinformation
- l c
5.0 Changed format to two column To conform to emergency response
, rocedures q
p i
5.3 Added valve names Provide additionalinformation old 5.8 Deleted RPS modincations (PDCR 861) l changed power supplies 5.6 to 5.8 Added actions To defeat AlJr0 AUX feedwater to gain manual control of system 5.9 Added actions To monitor system inventory and I
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provide manual actions to establish a charging flow path j
NRC inspection No. 50 213/87 22 5.16 Added actions To al_ign emergency nitrogen supply to RCP thermal barrier trip valves a
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