ML20003B496

Tech Specs Sections 3.6.4.3,4.6.4.3 & 3/4.6.4.3 Re Hydrogen Control Interim Distributed Ignition Sys

ML20003B496
Person / Time
Site:	Sequoyah
Issue date:	02/05/1981
From:	TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20003B493	List: ML20003B492 ML20003B496
References
TVA-SNP-TS-9, NUDOCS 8102120252
Download: ML20003B496 (2)

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ENCLOSURE SEQUOYAH NUCLEAR PLANT UNIT 1 PROPOSED CHANGE TO TECHNICAL SPECIFICATIONS I

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! CONTAINMENT SYSTEMS HYDROGEN CONTROL INTERIM DISTRIBUTED IGNITION SYSTEM LIMITING CONDITION FOR OPERATION I

3 6.4.3 The primary containment interim distributed ignition system shall i be operable.

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f APPLICABILITY: MODES 1 and 2 ACTICN

'dith the interim distributed ignition system inoperable, restore the

inoperable system to OPERABLE status within 7 days er be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

SURVEILLANCE REQUIREMENTS 4.6.4.3 The interic distributed ignition system shall be demonstrated CPERASLE:

a. At least once per 92 days by energizing the supply breakers.

. b. At least cnce per 18 cenths by: ,

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1. Verifying the cleanliness of each glow plug by a visual inspection.

2. Energizing each glow plug and verifying a surface temperature l

of at least -1500 F.

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t CONTAINMENT SYSTEMS BASES 3/4.6.4 3 HYDROGEN CONTRCL INTERIM DISTRIBUTED IGNITION SYSTEM The operability of the 32 ignitors in the hydrogen control distributed ignitien system will =aintain an effective coverage throughout the centaincent. This system of ignitors will initiate cc=bustion of any j significant a: cunt of hydrogen released after a degraded core accident.

l This system is to ensure burning in a controlled =anner as the hydrogen is released instead of allowing it to be ignited at high concentrations by a randcc ignitien source.

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