ML20212H286

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Proposed Tech Specs 3/4.6.1.8,allowing Continued Operation Until Next Plant Shutdown at Which Time Valve T4803F601 Will Be Repaired
ML20212H286
Person / Time
Site: Fermi DTE Energy icon.png
Issue date: 09/24/1999
From:
DETROIT EDISON CO.
To:
Shared Package
ML20212H278 List:
References
NUDOCS 9910010018
Download: ML20212H286 (8)
v • d • e


Text

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1 ENCLOSURE 4-PART1 TO NRC-99-0082 l

PROPOSED TECHNICAL SPECIFICATION MARKED UP PAGES INCLUDED PAGE(Sh 3/4 6-14 9910010018 990924 PDR ADOCK 05000341 p

PDR

CONTAINMENT SYSTEMS DRWELL AND SUPPRESS 10k, CHAMBER PURGE SVSTEM LIMIT 1h6 CONDITION FOR.0PERATION. -

20-inch, and 24-inch valves)pression chamber purge syst:v, (6-inch,10-inch, 3.6.1.8 The drywell and sup isolatici valves in one supply line and one extsust line open for inerting, deinerting or pressure control. Ritrogen VENTING / makeup and pressure control is also allowed through the 1-inch valves. purge / vent operations through the SETS shall be limited to 90 hours0.00104 days <br />0.025 hours <br />1.488095e-4 weeks <br />3.4245e-5 months <br /> each 365 days.*

APPLICABILITY: OPERATIONAL CONDITIDMS 1, 2, and 3.

ACTION:

a.

With a drywell and suppression chasber purge systes supply and/or exhaust isolation valve open, except as permitted above, close the valve (s) o~r otherwise isolate the penetration (s) within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWP:

within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

b.

With a drywell ar.d suppressiori chaeber purge systest supply and/or exhaust isolation valve (s) with resilient material seals having a men-sured leakage rate exceeding (the 11adt of Specification 4.6.1.8.2, restore the inoperable valve s) to OPERABLE status witMn 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at least HOT SHUTDOWN within the 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> m in COLD SHUTDOWN within tne following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />,.K.M.

Le SURVE1LLANCE REQUIREMEITS 4.6.1.8.1 Before being opened for purge / vent operation through SGTS, the dry-well and suppression chanter purge supply and exhaust butterfly isclation valves shall be verified nct to have been open for purge / vent operation through SGTS for sore than 90 hours0.00104 days <br />0.025 hours <br />1.488095e-4 weeks <br />3.4245e-5 months <br /> in the previous 365 days.*

4.6.1.8.2 At least once per g2 days each penetration for each 6-inch, each 10-inch, each 20-1pch, and each 24-inch drywell and supp essico charber purge supply and exhaust isolation valve with resilient eaterial stals shall be descostrated OPERABLE by verifying that the measured leakage rate is less l

than or equal to 0.05 L, when pressurized to P,.

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' Primary containment nitrogen VEIT!t;G tr.d pressure control is pers.itted through the 1-inch salves and is not subject to tht 90 nours per 365 day lin.it.

3/4 6-14 Amendnent fic.jHI

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\\

INSERT A l

    • For Penetration X 26 inoperability due to leakage exceeding the limit of 4.6.1.8.2, operation may continue until the next plant shutdown provided that the penetration is isolated via deactivated and closed valves T4800F407, with flanged cover, and T4800F408 and that these valves are verified deactivated and closed every 31 days. For the purpose of this exception, Surveillance testing en T4800F407 and T4800F408 shall be deferred until the next shutdown. At least every 45 days, leak testing will be performed to verify that the limit of 0.6 La is not exceeded due to additional penetration leakage. This testing will. also qualitatively continue to verify the integrity of outboard valves T4800F407 and T4800F408.

These requirements remain in effect until the isolation valve leakage is restored to within applicable limits. This leakage shall be restored to within applicable limits prior to startup from the next plant shutdown.

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ENCLOSURE 4-PART2 TO NRC-99-0082 PROPOSED TECHNICAL SPECIFICATION REVISED PAGES INCLUDED PAGE(Sh 3/4 6-14 3.10-22 [ITS]

3.10-23 [ITS]

B.3.10.8-1 (ITS) i

e CONTAINMENT SYSTEMS DitYWELL'ANDSUPPRESSIONCHAMBERPURGESYSTEM LIMITING CONDITION FOR OPERATION 3.6.1.8 The drywell and sup 20-inch,.and 24-inch valves)pression chamber purge system (6-inch, 10-inch,ay be in ope isolation valves in one suppl line and one exhaust line open for inerting

- deinerting or pressure contro. Nitrogen VENTING / makeup and pressure control is also allowed through the 1-inch valve's.

Purge SGTS shall be limited to 90 hours0.00104 days <br />0.025 hours <br />1.488095e-4 weeks <br />3.4245e-5 months <br /> each 365 days.*/ vent operations through the APPL.ICABILITY: OPERATIONAL CONDITIONS 1, 2, and 3.

ACTION:

a.

With a drywell and suppression chamber purge system supply and/or exhaust isolation valve open, except as permitted above,4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> or close the valve (s) or otherwise isolate the penetration (s) within be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

b.

With a drywell and suppression chamber purge system supply and/or exhaust isolation valve (s) with resilient material sals having a measured leakage rate exceeding the limit of Specification 4.6.1.8.2, restore the inoperable valve (s) to OPERABLE status within 24-hours er be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.**

l SURVEILLANCE RE0VIREMENTS 4.6.1.8.1 Before being o)ened for purge drywell and suppression c1 amber ) urge su/ vent operation through SGTS, thepply and exh

- valves shall be verified not to 1 ave been open for purge / vent operation through SGTS for more than 90 hours0.00104 days <br />0.025 hours <br />1.488095e-4 weeks <br />3.4245e-5 months <br /> in the previous 365 days.*

4.6.1.8.2 At least once per 92 days each penetration for each 6-inch, each 10-inch, each 20-inch, and each 24-inch drywell and suppression chamber purge supply and exhaust isolation valve with resilient material seals shall be demonstrated OPERABLE by verifying that the measured leakage rate is less than or equal to 0.05 La when pressurized to P -

a

  • Primary containment nitrogen VENTING and pressure control is permitted through the 1-inch valves and is not subject to the 90 hours0.00104 days <br />0.025 hours <br />1.488095e-4 weeks <br />3.4245e-5 months <br /> per 365 day limit.
    • For. Penetration X.26 inoperability due to leakage exceeding the limit of 4.6.1.8.2, operation may continue until the next plant shutdown provided that the penetration is isolated via deactivated and closed valves T4800F407, with flanged cover,d every 31 days. For the-purpose of this and T4800F408 and that these valves are verified deactivated and close exception, Surveillance testing on T*800F407 and T4800F408 shall be deferred until the next shutdown. At least every 45 days, leak testing will be performed to verify that the limit of 0.6 La is not exceeded due to additional penetration leakage. This testing will also qualitatively continue to verify the integrity of outboard valves T4800F407 and T4800F408.

These requirements remain in effect until the isolation valve leakage is restored to within applicable limits. This leakage shall be restored to within applicable limits prior to startup from the next plant shutdown.

i FERMI.- UNIT 2 3/4 6-14 Amendment No. #,

L T4803F601, Nitrogen Inerting Drywell Air Purge Inlet Supply Valve L

3.10.8 L

3 c10 SPECIAL OPERATIONS 3.10.8 T4003F601, Nitrogen Inerting Drywell Air Purge Inlet Supply Valve LC0 3.10.8-LC0 3.6.1.3, "PCIVs," may be changed to exclude penetration X26 flow paths for purge valve leakage rate not within limit provided:

a.

Penetration X26 outboard isolation valves T4800F407 and T4800F408 are closed and deactivated; b.

Penetration X26 pi by a blind flange: ping outboard of T4800F407 is closed c.

This Special Operation allowance is withdrawn on the first entry into MODE 2 or MODE 3.

.........................N0TE Upon exiting this S wcial Operation LC0 the 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> Completion Time of _C0 3.6.1.3 Required Action D.1 is considered expired for purge valve leakage not within limit.

APPLICABILITY:

MODE 1 with SR 3.6.1.3.6 not met.

ACTIONS U"

REQUIRED ACTION COMPLETION TIME A.

One or more A.1 Enter the applicable Immediately requirements of the Condition of LC0 not met.

LC0 3.6.1.3, "PCIVs."

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l FERMI UNIT 2 3.10 22 Amendment No. 135

g T4803F601, Nitrogen Inerting Drywell Air Purge Inlet Supply Valve 3.10.8 SURVEILLANCE REQUIREMENTS l

SURVtlLLANCE FREQUENCY SR 3.10.8.1 Verify pnetration X26 outboard isolation

- -NOTE-valves T4800F407 and T4800F408 are closed SR 3.0.2 is not and deactivated.

applicable.

f 31 days i

SR 3.10.8.2 NOTE-----

Results shall be evaluated against acceptance criteria applicable to l

SR 3.6.1.1.1.

Perform leakage rate testing for primary NOTE -- -

i containment purge valves with resilient SR 3.0.2 is not seals on penetration X26.

applicable.

45 days i

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l FERMI UNIT 2 3.10-23 Amendment No. 135

T4803F601, Nitrogen Inerting Drywell Air Purge Inlet Supply Valve B 3.10.8 i

B 3.10 SPECIAL' OPERATIONS B 3.10.8 T4803F601, Nitrogen Inerting Drywell Air Purge Inlet Supply Valve

-BASES The Background, Applicable Safety Analysis, and other related Bases are presented in References 1 and 2.

REFERENCES 1.

'" Request For Enforcement Discretion," letter from D.R. Gipson (DECO) to NRC, NRC-99 0092, dated September 24, 1999.

2.

" Proposed Exigent Technical Specification Change (License Amendment To Technical Specification "TS 1

3/4,6.1.8, Drywell and Suppression Chamber Purge System," letter from D.R. Gipson (DECO) to NRC, NRC 99 0082, dated September 24, 1999.

2.

NRC Safety Evaluation for Fermi-2 Amendment No.135.

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FERMI UNIT 2 B 3.10.8 - 1 Amendment No. 135

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