ML20205A274
| ML20205A274 | |
| Person / Time | |
|---|---|
| Site: | Millstone, Haddam Neck, 05000000 |
| Issue date: | 06/03/1988 |
| From: | CONNECTICUT YANKEE ATOMIC POWER CO. |
| To: | |
| Shared Package | |
| ML20204H467 | List:
|
| References | |
| EOP-576, NUDOCS 8810250446 | |
| Download: ML20205A274 (9) | |
Text
-
r E.J. Hroczka 8-25-03 corm $cproved by Station Suoerintendent Effective Date t
)
STATION PROCEOURE COVER CHEET A.
IDENTIFICATION Number E0P 576 Rev.
1 Title RPV LEVEL RESTORAf!0N EMERGENCY PROCEDURE Prepared By W. R. McCollum B.
REVIEW I have reviewed the above procedure and have found it to be satisfactory.
TITLE
$1GNATURE DATE DEPARTMENT HEAD
-[.
2/02/37 h*W h/W YW Z)h1fff C.o.
jfRAA dolm C.
UNREVIEVE0 SAFETY QUESTION EVALUATION DOCUMENTATION REQUIRED:
3 (Significant change in procedure method or scope
]I as described in FSAR)
YES[2 NO [ ]
(If yes, document in DORC/50RC meeting minutes)
ENVIRONMENTAL IMPACT (Adverse environmental impact)
YES [ ]
NO [d (If yes, docurcent in PORC/50RC meeting minutes)
D.
PROCEDURE REQUIRFS PORC/$0RC REVIEW YES ['f NO [ ]
E.
PORC/SORC APPROVAL
/"8['((
PORC/SORC Heeting Number F.
APPROVAL AND IMPLEMENTATION The atI. ached procedure is hereby approved, and effective on the date below:
NA G sh J,2o -fj*
7.~
Station /ServiceWnit Superintendent Effective Date SF-301 Rev. 6 0010250446 001007 DR ADGCK 050 13
s RPV L3 vel Restoration E0P 576 Page 1 Rev. 1 Unit I
, ~.,
l' v')
RPV Level Restorhtion Emergency Procedure PAGE NO.
EFF. REV.
1-6 1
STEP 5 06JECTIVE5 Enter from CQP
$70 if RPV water level cannot be maintained
> TAF or E0P 577 Upon Deoressurtration b
l Initiate'IC l Release cold leg watar inventory b
t taonsn Injection Lineup Prepare for level restoration d
Monitor RPV tevel/ Pressure Diagnose plant conditions u
late Action Based Upon Parameter Trends and Systee Availability
- GO TO E0P 573 "RP" spray Cooling"
- Go 70 E0P $74 'RPV Steam Cooling"
References:
1)
Emergency Procedure Guidelines, Millstone Unit One 2)
Emergency Procedure Guidelines, Appendix 8 3)
Emergency Procedure Guidelines, Appendix C 4)
ACP-QA-3.02, Attachment A ECP 576 RPV Level Restoration
i' I
RPV Level Restoration E0P 576 Page 2 Rev. 1 i
(%v)
I r
1.
PURPOSE The purpose of this procedure is to restore RPV water level to above i
top of active fuel.
l l
2.
ENTRY CONDITIONS 2.1 This procedure is entered from E0P 570 "RPV Level Control" step 3.2 when RPV water level cannot be maintained above the top of the active fuel (TAF = -127),. or E0P 577 upon depressurization.
l 3.
OPERATOR ACTIONS While executing the following steps:
E Boron injection is required.
THEN GO TO E0P 575 "RPV Level /Rx Pcwer Control" E RPV water level cannot be determined, RPV Flooding is required, THEN GO TO E0P 578 "RPV Floodir.g".
E RPV Flooding is required for other reasons, LHM GO TO E0P 578 "RPV Flooding".
3.1 Initiate Isolation Candenser 3.2 Line-up for injection and start pumps in two or more of the following normal injection subsystems:
3.2.1 Condensate /Feedwater 3.2.2 LPCI A 3.2.3 LPCI B 3.2.4 Core Spray A 3.2.5 Core Spray B E0P 576 RPV Level Restoration
RPV Level Restoration E0P 576 Page 2a Rev. 1
))
1.
C04171045 REQUIRING RPV Floo0!NC A.
RPY Level control (EOP $70) 1.
RPY water level cannot be deteraleed.
B.
Centatteent Control (E0P 540)
I 1.
Drywell temperature reaches the RPY Saturation Te'perature.
e 2.
Suppression Chamber pressure cannot be saintained below the Primary Containment Design Pressure.
C.
RPV Level Restoration (EOP $76) 1.
RPV water ieval cannot be determined.
4 0.
RPV Level /h Power (EOP 575) 1.
RPV water level cannot be determined, and h Power cannot be determined or maintained above 85.
II. 8090N INJECT!04 IEQUIREMENTS 6
A.
h Power Control (EOP 572) 1.
If the h is not shut down and Suppression Pool Temperature reaches 110*F.
l E0P 576 RPV Level Restoration
RPV Level Restoration E0P 576 Page 3 Rev. 1 O
NOTE sj Completion of step 3.3 is not necessary for execution of step i
3.4.
i 1
3.3 E at least two normal injection subsystems (step 3.2) can not be lined up, line-up as many of the following alternate injection subsystems as possible, BUT 00 NOT INJECT 3.3.1 SLC Test Tank OP 304".
3.3.2 M/U Water to SLC System "0P 304".
3.3.3 Boron Tank to SLC System "0P 304".
3.3.4 CRD Pump Test Line "0P 302".
3.3.5 CST to LPCl/CS "0P 335".
3.3.6 Fire System "0P 332A".
3.3.7 ESW to ECCS X-Tie "00 335" 3.4 Monitor RPV pressure and water level.
Continue in this procedure at the step indicated in the following table.
RPV Pressure Region High* (> 33n psig)
LO(< 330 psig)
$ '$ RISING 3.5 3.6
~
?%*
m :n 3 LOWERING l
3.7 3.8
- RPV pressure at which Core Spray Pump shut-off-head is reached.
EOF 576 RPV t.evel Restoration
l RPJ Level Restoration E0P 576 Page 4 Rev. 1 b')
While executing the following steps:
E the RPV water level trend reverses or RPV pressure changes region, THEN GO T0 step 3.4 of this procedure.
E RPV water level drops to -48" THEN prevent automatic RPV depressurization by depressing the APR Timer Reset pushbutton and CONTINUE to reset every minute UNTIL, RPV water level is o -48", @
Drywell pressure is < 2 psig and the "High Drywell Pressure Reset" key is in the resat position, OR All Core Spray and LPCI pumps are not running, AND the "APR Auto-Blowdown A/C Interlock" alarm is clear.
3.5 RPV level rising end RPV pressure > 330 psig.
3.5.1 IF RPV water level is > -127" THEN GO TO E0P 570 "RPV Level Control", step 3.3.
l 3.5.2 IF RPV water level is < -127" AND Undensate/Feedwater is available, THEN GO TO E0P 570 "RPV Level Control", step 3.3.
l 3.5.3 IF RPV water level is < -127" AND E ndensate/Feedwater is not available, THEN GO TO E0P 577 "Emergency RPV Depressurization".
3.6.1 E RPV pressure is rising, THEN GO TO E0P 577 "Emergency RPV Depressurization" 3.6.2 E RPV pressure is M rising, WHEN RPV water level reaches -127" THEN GO TO E0P 570 "RPV Level Control", step 3.3.
E0P 576 RPV Level aestoration
RPV Level Restoration E0P 576 Page 4a Rev.1 ICC5 AUTO-lm!TIATION
)
i I
APR - Drywell Hi Pressure (2 psig) M j
RPV Low Low Water Level ( 44") M AC !.'.terlock (1 C5 or 1 LPCI) M 120 Sec finer (Timed out)
- Orywell Hi Pressure (2 pelg) M 68
I LPCI
- Drywell Hi Pressure (2 psig) M RPV Low-Low Water Level (-44") WITH a
RPV Pressure Low (300-350 psil)
)
l l
E0P $76 RPV l.evel Restoration
r>
RPV Level Restoration E0P 576 Page 5 Rev. 1 (D
3.7 RPV level lowering and RPV pressure > 330 psig.
V 3.7.1 H, Condensate /Feedwater is not operating, THEN attempt to start Condensate /Feedwater.
3.7.2 LF, CRD is not operating, THEN attempt to start CRD 3.7.3 E CRD is not operating, AND IF at least two normal injection subsystems are IIned-up for injection with pumps running, THEN GO TO E0P 577 "Emergency RPV Depressurization" 3.7.4 E CR0 is rot operating, AND IF no normal injection subsystem.is lined-up Tor injection with at least one pump running, THEN start pumps in the alternate injection subsystems which are lined-up for injection (step 3.3 of this procedure).
~
NOTE For Hydrogen / oxygen control following a LOCA, refer to section 7.6 of OP 311.
3.7.5 WHEN RPV level approaches -127" (TAF),
E any system, or normal injection subsystem, or a? ternate injection subsystem is lined-up with at least one pump running.
THEN GO TO E0P 577 "Emergency RPV Depressurization".
IF no system, or normal injection su'> system, or aTternate injection subsystem is liaed-up with at least one pump running, THEN GO TO E0P 574 "RPV Steam Cooling".
E0P 576 RPV Level Restoration
RPV Level Restoration E0P 576 Page 6 Rev. 1 0
3.8 RPV water level lowering and RPV pressure < 330 psig.
3.8.1 IF no normal injection system is lined-up for injection Eth at least one pump running, THEN start pumps in the alternate injection subsystems which are lined-up for injection (step 3.3 of this procedure).
3.8.2 g RPV pressure is rising, THEN GO TO E0P 577 "Eu egency RPV Depressurizatior".
WHEN RPV water level drops to -127" (TAF),
THEN GO TO E0P 573 "RPV Spray Coeling".
WRM: dip O
FINAL 0
"CP ~;75 iPV *.evel iustoration
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