ML20003F499
| ML20003F499 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 04/15/1981 |
| From: | MISSISSIPPI POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML20003F494 | List:
|
| References | |
| 05-S-01-EP-7, 5-S-1-EP-7, NUDOCS 8104210416 | |
| Download: ML20003F499 (4) | |
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,EITLE: " Core Cooling Without Level 50 05-5-01-EP -7 REV. C PAGE 1 cf 2 I
ces cretien 1.0. PURPOSE The purpose cf this precedure is to ecci the reacter ccre with spray ficw
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until reactor water level can he restored.
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This procedure is entered from EP-4 (Level Restoration) when the folicwing occur simultanecusly:
((7 2.1 RPV level cannot be restored.and maintained above 0" TAF as reac on tne _,uel tone instrumentation:
P601 - RER Secticn - 321-R615 P601 - RCIC Section - 321-R610
_/ 7 2.2 RPV ressure is less than 50 psig (RCIC low stea= pressure isolation
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e setpoint) and not increasing.
3.0 OPERATOR ACTIOUS
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Ccoldewn rates greater than 100 F/hr =ay be attained when performing step 3.1.
/__7 3.1 Cpen. all ADS valves.
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/_7 3.2 If less than ei=ht ADS valves are cpened, oren other SRV's until a total of eight va19es ars opened.
-/_7 3.3 Maintain Suppression Pool water level greater than 14'6" to ensure the NPSE requirements for the HPCS gnd LPCS pu=ps with a maximum Suppression Pool temperature of 212"F.
f7 3.4 Inject water into the RPV frc= the Suppression Peel with the folicwing systems:
3.4.1 HPCS (04-1-01-E22-1 step later) 3.4.2 LPCS (04-1-01-E21-1 step later)
((7 3.5 When RPV pressure is less than 128 psig, verify HPCS cr LPCS is s c. r a.v i n c. the core as follcws:
((7 3.5.1 Verify hPCS is spraying the core by observing:
.a.
CPCS cu== discharde pressure is a mini =un of 120 e. sic.
creater than RP7 cressure
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b.
EPCS flow is approximately 7115 gp=.
c.
HPCS minimum flow valve (E22-F012) and test :ceturn valve
-te (E22-F023) indicate. closed.
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JRAND GUI.F NUCLEAR STATICN IMERGENCY PRCCIOCRE UITLE** Core Cooling Without Level NO. 05-S-01-EP-7 EEV C PAGE 2 cf ;
Restoration
((7 3.5.2 Verify LPCS is spraying the core by observing:
a.
LPCS pu=p discharge pressure is a minimum of 135 psig greater than RPV pressure b.
LPCS flow is approximately 7115 gp=.
c.
LPCS =inimum flow valve (E21-F011) and test return valve (E21-F012) indicate closed.
((7 3.6 If HPCS or LPCS is scraying the core, secure all other injection inte tne RPt' frc= sources external to the containment.
_/ _ 7 3.7 Initiato suoeressica cool cooling with RHR loops A and 3 (04-1-01-E12 step later).
((7 3.8 When RPV water level is restored to TAF (0" as read on the folicwing fuel none level instrumentation) then enter EP-1 (Level Control) at paragraph 3.3 Level Recorder 321-R615 - RER Section of P601 Level Recorder 321-R610 - RCIC Section of P601 e
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