ML20205C742
| ML20205C742 | |
| Person / Time | |
|---|---|
| Site: | Millstone, Haddam Neck, 05000000 |
| Issue date: | 12/13/1985 |
| From: | CONNECTICUT YANKEE ATOMIC POWER CO. |
| To: | |
| Shared Package | |
| ML20204H467 | List:
|
| References | |
| EOP-35-FR-I.1, NUDOCS 8810260562 | |
| Download: ML20205C742 (7) | |
Text
c.
E. J. Mroc:
- 2-1-85 Form Apprcv;d by Station Supsrintendent Effective Date w
STATION PROCEDURE COVER SHEET A. IDENTIFICATION
- v[ )-
Number E0P 35 FR-I.1 Rev. 1_
Title RESPONSE TO HIGH PRESSURIZER LEVEL Prepared By G. Olson B. REVIEW I have reviewed the above procedure and have found it to be satisfactory.
TITLE SIGNATURE DATE DEPARTMENT HEAD I[b /
C. UNREVIEWED SAFETY QUESTION EVALUATION 00CUMENTATION REQUIRED:
(Significant change in procedure method or scope YES [ ] NO NJ as described in FSAR)
(If yes, document in PORC/SORC meeting minutes)
ENVIRONMENTAL IMPACT (Adverse environmental impact) YES [ ] NO[y]
(If yes, document in PORC/SORC meeting minutes)
D. INTEGRATED SAFETY REVIEW REQUIRED (Affects response of Safety Systems, performance YES [ ] NO [y]
of safety-related control systems or performance of control systems which may indirectly affect safety system response.)
(If yes, document in PORC/SORC meeting minutes.)
E. PROCEDURE REQUIRES b ORC REVIEW YES % NO [ ]
F. h $0RC APPROVAL h 0RC Meeting Number 3 -hM SS 4 G. APPROVAL AND IMPLEMENTATION TM attached procedure is hereby approved, and effective on the date below:
~
rA f Station /Serwice/ Unit Superinten6ent l1-/3 -W Effective Date SF 301 Rev. 7 Ogto2gggg h oo7og Page 1 of 1 PDR P
E0P 35 FR-I.1 Page 1 Rev. 1 RESPONSE TO HIGH PRESSURIZER LEVEL Page No. Eff. Rev.
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RESPONSE TO HIGH PRESSURIZER LEVEL E0P 35 FR-I.1 Page 2 Rev. 1 A. PURPOSE This procedure provides actions to respond to a high pressurizer level.
B. ENTRY CONDITIONS This procedure was written for Modes 1, 2, 3 and 4 assuming RHR is not in service and SI has been terminated. Using this procedure when not in these modes requires a step by step evaluation to determine if the required action is still applicable to current plant conditions.
This procedure is entered from E0P 35 F-0.6, INVENTORY Critical Safety Function Status Tree on a YELLOW condition.
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O MPS064-2 19 43
RESPONSE TO HIGH PRESSURIZER LEVEL E0P 35 FR-I.1 Page 3 Rev. 1 STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OSTAINED 1 Check if SI Has Been Return to procedure and Terminated step in effect.
- a. SI pumps - ALL STOPPED
- b. Charging to Cold Leg Cold Leg injection valves - CLOSED CAUTION Charging and letdowrt flows should be carefully-controlled to avoid sudden RCS pressure changes since the PZR may be water solid.
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O OP50641 344
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RESPONSE TO HIGH PRESSURIZER ,- .
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STEP ACTION / EXPECTED R ESPON* ,
PP
- 27 CSTMNED
_h -
2 Check if Charging Flow >-
Established
- a. Vt.Aty Recire Flowpm *
'$ Re ' t ESTABLISEED
- b. Charging pump - AT LEAS' torr the icilc eing ONE RUNNING IF kP'. flow
't3 F . e rmal barrir -
lost, T'2
- M 4 3eal T'ye~ction i effected RCP before starting charging pumps.
- 2. Start one charging Pump ~
- 3. IF geal injection flow isolated THEN restore seal injection to RCPs
- c. Instrument Air to c. Establish instrument air
,~s Containment - ESTABLISHED to contair. ment.
- 1. One instrument air
(\>) compressor RUNNING
- 2. OPEN instrument air containment isolation valves
- d. Charging flow - d. Establish normal ESTABLISHED charging flow I_F charging can NE be established, THEN establish excess letdown as per OP 3304A, CHARGING AND LETD0kW .
Go to Step 5.
3 Check Letdown - IN SERVICE Establish 120 gpm letdown AT 120 gpm IF letdown can NOT be established, THEN establish excess letdown as per OP 3304A, CHARGING AND LETD0%H
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RESPONSE TO HIGH PRESSURI?L LEVEL E0P 35 FR-1.1 Page 5 Rev. 1 STEP ACTION /EEPECTED RESPONSE RESPONSE NOT 08TAINED Check if RCP Seal Return Flow Should Be Established
- a. RCS pressure > 115 psia a. Go to Step 5
- b. Establish flow b. Go to Step 5
- 1. Verify RPCCW flow to Seal Water Heat Exchanger-ESTABLISHED
- 2. OPEN RCP seal return containment isolation valves.
5 Check PZR Pressure
- a. Pressure - LESS THAN a. Verify at least one
- 2350 PSIA PZR PO4V and block valve open. IF MOT, THEN open one PORV and block valve as necessary until pressure less than 2350 psia.
- b. Pressure - LESS THAN b. Control charging and 2275 PSIA letdown flow as
! necessary to decrease PZR pressure to less than 2275 psia.
IF any valve can NOT be closed,
! THEN manually close its block valve.
7 Turn on PZR Heaters OP50441 3-44
RESPONSE TO MIGH PRESSURIZER LEVEL E0P 35 FR-I.1 Page 6 Rev. 1
~-' ACTICWEXPECTED RESPONSE RESPONSE NOT OBTAINED STEP 8 Check PZR Spray Valves
- a. Normal spray valves - a. Manually close spray CLOSED valves. IF any valve can NOT be closed, THEN stop RCP(s) supplying failed spray valve (s).
- b. Auxiliary spray valve - b. Manually close CLOSED auxiliary spray valve. IF valve can NOT be cl~o' sed, THEN perform the following
- 1. CLOSE Charging Header Flow Controller
- 2. CLOSE Letdown Low ,
Pressure Controller
- 3. OPEN one reactor coolant loop drain
- 4. OPEN excess letdown heat exchanger inlet isolation
.N 5. Check excess letdown
( ,
) diversion valve in VCT position
- 6. OPEN excess letdown flow control valve 9 Control Charging and Letdown Flow As Necessary To Maintain RCS Pressure Stable i 10 Check PZR Level - LESS Return To Step 9.
TRAN 89%
11 Return To Procedure And l Step In Effect
-FINAL-l l
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