ML20009D192

Reactor Pressure Vessel Flooding Emergency Procedure

ML20009D192
Person / Time
Site:	Shoreham File:Long Island Lighting Company icon.png
Issue date:	07/14/1981
From:	LONG ISLAND LIGHTING CO.
To:
Shared Package
ML20009D181	List: ML20009D180 ML20009D183 ML20009D184 ML20009D185 ML20009D188 ML20009D189 ML20009D192 ML20009D193 ML20009D194
References
29.023.09-DRFT, NUDOCS 8107230268
Download: ML20009D192 (7)

Text

._.

w-Submitted:

SP humber 29.023.03 (Section Head)

Approved:

Revicion C

(Plant Manager)

Effettive Date REACTOR PRESSURE VESSEL FLOODING

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f.1E. E MEUlh,.=Ha f3:.i EMERGENCY PROCEDURE 5

1.0 PUPSOSE e

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The purpose of this procedure is tes flood the RPV using all the available injection subsystems.

2.0 ENTRY CONDITIONS This procedure is entered from SP 29.023.05 (Rapid RPV Depressurization) if any of the following occur:

2.1 Temperature near the cold reference leg instrument vertical runc exceeds the RPV saturation limit.

2.2 RPV water level cannot be determined.

2.3 Suppression chamber pressure er.ceeding cuppression limit.

3.0 OPERATOR ACTIONS 3.1 If at least (later) SRV's are open, or if core cpray or other motor driven feedwater pumps are availr.ble for injection, perform the following.

3.1.1 All MSIV's 1B21-A0V-081A IS21-A0V-082A

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1B21-A0V-001C ~

IB21-A0V-082B 1B21-A07-081B IB21-A0V-082C IB21-A0V-081D 1B21-A0V-082D 3.1.2 MSL Drain Lines IB1 MGV-038 IB21 MOV-033 IB1.. A0V-088 IB21 A0V-089 i

I 3.1.3 RHR Steam Condensing Valve 1El1 MOV-049 3.1.4 HPCI Isolation Valves IE41 MOV-041 1E41 MOV-047 1E41 MOV-042 IE41 MOV-048 g=,i !

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3.1.5

-RCIC leciatica Vilv:s s

1E51 MOV-041 1E51 MOV-047

-1E51 MOV-042 1E51 MOV-048 3.1. 6 - RWCU Isolation Valves 1G33*MOV-031 IG33*MOV-041 1G33*MOV-032-3.2

' Inject water into the RPV with all of the following.

3.2.11 Core spray per SP 23.204.01 Core Spray System.

3.2.2 condensate booster pumps per SP 23.103.01 Condensate.

3.2.3

_LPCI per SP-23.204.01 Low Pressure Coolant Injection.

3.2.4 Condensate pumps per SP 23,103.01 Condensate.

3.2.5' 'CRD'per SP 23.106.01 Control Rod Drive.

3.3._

If.RPV water level is' increasing, then continue in this procedure

.at Step 3.7.

3.4 L When RPV pressure is stable,' cycle one SRV closed for about 3 minutes and then open to determine the single SRV pressure rise.

3.5

1f the single SRV pressure rise exceeds the minimum single SRV 1 pressure rise,' Fig.11, continue in this procedure at paragraph 3.7.

If the single SRV pressure rise is less than the minimum single SRV pressure rise, per form Step 3.6.

3.6 Inject. water'into the RPV with all of the following.

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3.6.1 Service water /recirc loop ultimate cooling water crosstie-valves IP41-MOV-033A, MOV-933B, MOV-933C and MOV-033D.

3.6.2-ECCS connections from the condensate transfer system.

l 3.6.3 SLC.(test tank) and SLC (boron tank) per SP 23.123.01.

_ 3. 7_

LIf-suppression chamber pressure cannot be maintained below the primary containment pressure limit, Fig. 2, initiate the following systems irrespective of whether adequate core cooliPS is assured:

3.7.1 Drywell sprays 3.7.2 Suppression pool sprays only when suppression pool water level is below (later)

SP29.923.99 Rev. C

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CAUTION Defeating' isolation interlocks may be required to acconplish this step.-

5.8.

If suppression chamber pressure exceeds the primary containment

. pressure limit, vent the primary containment in accordance with

_(later) to reduce pressure below the primary containment pressure

-limit.

3.9 Fill all RPV level instrumentation reference columns.

3.10 Continue injection until temperature near the cold refercnce leg

vertical runs is below 212*F and RPV water level instrumentation is available.

3.11 If it can be determined that the RPV is filled, continue in this procedure at step 3.14.

~ NOTE:

Several methods of determining if the RPV is filled are provided, however, these may not be the only means.

.c.

3.11.1 RPV water level indication

~3.11.2 Starting and stopping a condensate booster pump and determining that the pressure in the vessel goes to the shutoff head of the booster pump.

3.11.3 If no external source is being injected a stable RPV

. pressure coincident with a stable suppression pool level

-may indicate the RPV filled.

3.11.4 ' A rapid increase in suppression pool temperature may

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indicate the RPV filled.

3.11.5 The open SRV's tailpipe temperature increasing to and equalizing with RPV temperature may indicate the RPV filled.

3.12 If the level is still unknown, cycle one SRV closed for above three minutes and back open to determine the RPV pressure rise (referred to as single SRV pressure rise). If the RPV pressure indicates the vessel is filled, proceed to step 3.14.

3.13. If the single SRV pressure rise is less than the minimum single SRV pressure rise, return to paragraph 3.11.

SP29 923 99 Rev. C

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CAUILON Refer to Figure 3 for maximum acceptance core uncovery time prior to performance of step 3.14.

3.14 Terminate all injection into the RPV and reduce RPV water level.

3.15 -1f RPV water level indication is not restored within the maximum acceptable core uncovery time as determined by Figure 3, return to paragraph 3.2.

3.16.lf RPV water level indication is restored within the maximum acceptable core uncovery time as' determined in paragraph 3.15, proceed to SP 29.923 91 (level control) at paragraph 3.3.

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