ML20009D194

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Station Blackout Emergency Procedure.
ML20009D194
Person / Time
Site: Shoreham File:Long Island Lighting Company icon.png
Issue date: 07/02/1981
From:
LONG ISLAND LIGHTING CO.
To:
Shared Package
ML20009D181 List:
References
29.015.02-DRFT, NUDOCS 8107230270
Download: ML20009D194 (5)
v • d • e


Text

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.tittad: SP Numbar: 29.015.02 (Section hard)

Revision: C

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(Plant Manager) Date Effective:

~ STATION BLACKOUT EMERGENCY PROCEDURE S77 j* [

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1.0 SY11PTOMS

1.1 Lose of both normal and reserve station power.

1.2 Failure of all Emergency Diesel G2nerators to re-energize any of the emergency AC buses.

2'. 0 ~ AUTOMATIC ACTIONS:

2.1 Reactor Scram 2.2 Main Turbine Trip 2.3 NSSSS Isolation

2. 4 - 125V AC Uninterruptible Power Supplies (UPS #1 & 2) switch to 125V DC batteries.

3.0 IMMEDIATE ACTION:

3.1 Initiate SP29 919 01 Emergency Shutdown.

3.2 Enter. SP29.923 91 (Level Control) as necessary to maintain <C reactor water level betweem 29"-59".

CAUTION: HPCI and RCIC are the only means available to restore reactor water level.

3.3 Enter SP 29 923 95 (RPV Depressurization) as necessary to Itduce and maintain RPV pressure at 199#-159#.

CAUTION: Depressurization should not result in a cooldown rate in excess of 199'F/ER.

3.4 Notify the system operator that a station blackout exists.

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4. -1 Stabilize _ plant conditions by performing the following:

4.1.1 Secure the HPCI pump if the RCIC pump is available to maintain RPV level.

-NOTE: If the RCIC pump trips en high.RPV level (58.75"), the trip throttle valve must be reset by running 1E51*MOV-944 to the full close position and then slowly re-open.

4.1.2 Adjust RCIC pump speed to maintain RPV level between-29"-59~. Do not reduce spr.ed below 2259 RPM.

4.1.3 Cy;1e SRV's as necessary to maintain RPV presau t between 1998-1599 NOTE: - Steps 4.2, 4.3, and 4.4 should be perforoad con-currently.- If AC power is rcetored to any of the emergency AC buses, refer to SP 29 915.91, Loss of Off-site Power.

, '4. 2 - . Verify the following equipment starts:

4.2.1 thin Turbine Emergency Lube Oil Pump .

4.2.2 Hydrogen Seal Oil Em.'rgency Lube Oil Pump 4.2.3 RFP Turbine A Emergency Lube Oil imp 4.2.4 RFP Turbine B Emergency Lube Oil Pump _

4.2.5 MG Set 1A Emergency Lube Oil Pump 4.2.6 MG Set IB Emergency Lube Oil Pump

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4.3 . Start'the_ Emergency Diesel Generators from the Control Room to re-energize the emergency AC buses.

'4.3.1 If the Emergency Diesel Generators will not start from the Control Room, proceed to the Diesel Cenerator Rooms and perform the following:

NOTE: Preferred starting sequence is 191, then 192, then 193.

4.3.1.1 Verify DC control power breakers in control cabinet 1R43*PNL-DG1 (2, 3) are closed.

SP 29 915.92 Rev. C

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4.3.1.2 Placs tha moda esisctor in local and dsprass <C th2 etart pushbutton for at lanat 3 escends.

4.3.2 _ If the emergency diesels are running, but the buses are not energized, proceed to the Switchgear Rooms'and locally close the diesel generator tie breakers.

4.4 ' .1Line-up the RHR heat- oxc'nangers for steam condensing by performing the following:

4.4.1 Manually close the following valves:

4.4.1.1- IP41*29V-9997A (B), RHR Hx Service Water inlet.

4.4.1.2 1E11*MOV-933A (E), RHR Ex Shell Side inlet.

4.4.1.3 1E11*MOV-935A (B),' RRR Ex Shell Side Outlet.

4.4.2 Connect a 21/2 inch fire hose between hose reel supply

~ valve IM43-93V-(Later) and RHR Hx -Flush Connection

' 1P41*92V-3991A (B).

4.4.3 > .tianually open the following valves:

-4.4.3.1 . 1E11*MOV-955A (B) and 1E11*MOV-956A (B) RHR Hx

- Vents.

4'.4.3.2 1E11*MOV-914A (B) RHR Hx Drain to Suppression Pool.

4.4.3.3 - 1E11*MOV-934A (B) RHR Ux Service Water Outlet.

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4.4.3.4' 1E11*MOV-949 RHRS Steam Inlet Valve.

4.4.3.5 1P41*$2V-3991A (B) RHR Hx Flush Connection.

4.4.3.6 - 1H43-93V-(Later) Fire Water to Hose ' Reel.

-4.4.4 Start the diesel driven fire pump, IM43-P-958, if

not running due to low header pressure.

I 4.4.5 Manually open IE11*PCV-997A (B) to lower RRR Hx Water Level to es3/4-level.

j 4.4.6 Slowly open IE11*PCV-993A (B) to raise RRR Hx Steam Pressure'to re125 psig.

CAUTION: Do not exceed 499*F or 459 psig at the shell.

side of 6he RHR heat exchanger.

SP 29.P15 92 Rev. C l: / -/ Page 3 I

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, 4.4.7 Adjust RHR lix lsval for ths nsetacary amount of stema <C candInsing rcquired to maintain RPV pressure c' t.25 psig.

~4.4.8 Maintain RCIC pump suction from the CST until level falls to 10,000 gallons.

4.5 Isolate all non essential DC loads to prolong battery life.

4.6 Contact the local fire department to draft from the intake canal to the fire connection at the Northwest corner of the warehouse.

4.7 If AC power can not be restored and the DC batteries approach complete discharge, perform the following:

4.7.1 Connect a fire hose from the fire header to the ultimate cooling water connection IP41-96V-3929.

,, 4.7.2 Close IP41-MOV-039A. _

'4.7.3 Open IP41-06V-3929, IP41-MOV-033C, and '

lEll-MOV-937A.

4.7.4 Secure the RCIC pta.p, open all SRV's, and fill the RPV to the highest level of available indication. ,

4.8 Implement the Emergency Plan and consult Plant Staff for further actions.

5.0 FINAL CONDITIONS:

5.1 All sources of electrical power have been depleted.

5 The emergency plan has been implemented.

5.3 - The core can be maintained covered with water but containment integrity is not assured.

'6.0 DISCUSSION:

l 6.1 This procedure provides information and instructions for actions in the event off-site power is lost and all emergency diesel generators fail to start and no method of restoring AC power can be accomplished for an extended period of time.

6.2 If at aay time during-the performance of this procedure AC power can be restored by Jan method (off-site, diesels, portable generators, etc.),

proceeding to SP29 915 91 will previde the necessary information and instructions to place the plant in a safe condition.

SP 29 015.62 Rev. C

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6,3 Due t3 th] ralichil~ty cf.the diOOG1 g:nerscors, Off-sito cystem <C

, ict rcannectitna cnd avail bility cf portable alcetrical gsnsrcting

,, cquipment, o tet:1 lees of powar for th2 cxtcadad time covarad by thic procedure is highly unlikely.

6.4 Early RPV depressurization and utilization of the RHR Heat Exchangers for steam condensing will result in suppression pool and drywell temperatures and pressures remaining below design limitations until well af ter battery depletion.

6.5 The time available in which to restore A* power before injecting seawater into the RPV is determined by the battery depletion rate. This time can be significantly increased by securing non-essential DC equipment and lighting and by using RCIC until the red battery is depleted and then transferring to HPCI to maintain RPV level until the blue battery is exhausted. The CST should be utilized as long as available before shif ting suction to the suppression pool. This will result in slower rates of containment temperature and pressure rise and avoid failure of the HPCI/RCIC turbines due to high lube oil temperatures.

l SP 29 915.02 Rev. C

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