ML20237H703

Rev 0 to Function Restoration Guidelines FR-I.2, Response to Low Pressurizer Level

ML20237H703
Person / Time
Site:	Sequoyah
Issue date:	08/21/1985
From:	Patterson B, Strickland G TENNESSEE VALLEY AUTHORITY
To:
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References
FR-I.2, NUDOCS 8708170318
Download: ML20237H703 (5)

Text

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TENNESSEE VALLEY AUTHORITY SEQUOYAH NUCLEAR PLANT [ 1 FUNCTION RESTORATION GUIDELINES -

FR-I.2 RESPONSE TO LOW PRESSURIZER LEVEL .

s Revision 0 PREPARED BY: G. Strickland .

RESPONSIBLE SECTION: Operaticyfs')

REVISED BY:  ! l SUBMITTED BY: //dA

,eC **

Re~spontfible ection Supervisor PORC REVIEW DATE:

APPROVED BY: %wtf N/scw Plant Manager '

DATE APPROVED:

Reason for ravision (include all Instruction Change Form Nos.):

New Instruction written per commitment to NUREG 0737. '

The last page of this instruction is number: 3

' 8708170318 87 327

.PDR ADOCK O pg i, P i

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SEQUOYA_H, NUCLEAR PLANT C , PLANT INSTRUCTION REVISION LOG .

FUNCTION RESTORATION GUIDELINES FR-I.2 REVISION Date -+Pages "- REASON'FOR REVISION (INCLUDE COMMIT-LEVEL Approved Affected MENTS AND ALL ICF FOPJ1 NUMBERS)

~New-instruction written per commitment 0 .AUG 211985 All to.NuREG 0737 -

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0266L/mbs 4

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., SQNP FR-I . 2 Unit 1 or 2

. Page 1 of 3 Rev. O C R$SPONSE TO LOW PRESSURIZER LEVEL ~

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l A. PURPOSE '

. l This guideline provides actions to respond to a low pressurizer level l B. SYMPTOMS l l

Pzr level less than 17%

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C. TRANSITION FROM OTHER INSTRUCTIONS Status Tree O

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SQNP

• FR-I . 2 Unit 1 or 2 Page 2 of 3 Rev. 0 RhSPONSE TO LOW PRESSURIZER LEVEL STEP _, ACTION / EXPECTED RESPONSE ' RESPONSE NOT OBTAINED 1 Check If SI Has Been Terminated IF SI has NOT been terminated ,

a. BIT has previously been TIIEN do NOT use this isolated instruction . Return to instruction in effect

b. SI Pumps have previously been stopped 2 Verify Letdown Isolation

a. FCV-62-69, 70, 72, 73, ,

and 74 - CLOSED 3 Verify Excess Letdown Isolated s ( 4 a.

FCV-62-54 or 55 - CLOSED Isolate Charging

a. FCV-62-90 or 91 - CLOSED 5 Stabilize T-avg l

a. Control steam dump as l necessary l

b. Control AFW as necessary l

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SQNP FR-I . 2 Unit 1 or 2 Page 3 of 3 Rev. O

( R$SPONSE TO LOW PRESSURIZER LEVEL STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED  !

6 Restore Pzr Level Through IF pzr level decreasing, ItCP Seal Injection THEN evaluate need for charging or selective

a. Charging Pump - RUNNING ECCS use to reestialish '

and maintain pzr level

b. Adjust FCV-62-89 and 93 '

to establish following:

1) Seal injection flow 8 gpm per RCP

2) Pzr level increasing ,,

c. WHEN pzr level > 17%,

THEN:

1) Establish charging and letdown

2) Turn on pzr heaters as necessary 7 Return To Instruction in Effect

- END -

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