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:
Shared Package
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References
FR-I.2, NUDOCS 8708170318
Download: ML20237H703 (5)

Text

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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 C

SUBMITTED BY:

//dA Re~spontfible ection Supervisor

,e 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

.PDR ADOCK O 327 pg 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 l(

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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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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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.___________-__O

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

(

a.

FCV-62-54 or 55 - CLOSED s

4 Isolate Charging a.

FCV-62-90 or 91 - CLOSED 5

Stabilize T-avg l

a.

Control steam dump as l

necessary b.

Control AFW as necessary

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

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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

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