ML20070E589

Proposed Tech Spec Changes to Section 3.12.F,revising Limiting Condition of Operation for Specific Fire Barrier, Currently Requiring Establishing Continuous Fire Patrol When Penetration Fire Barrier Not Functional

ML20070E589
Person / Time
Site:	Pilgrim
Issue date:	12/15/1982
From:	BOSTON EDISON CO.
To:
Shared Package
ML20070E578	List: ML20070E574 ML20070E589
References
NUDOCS 8212170310
Download: ML20070E589 (2)

Text

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LIMITING CONDITION FOR OPERATION SURVEILLANCE REQUIREMENTS on at least one side of the af-fected penetration within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.

(NOTT: In the case of the fire penetration barrier between the main steam tunnel and turbine building, substitute a "once per hour fire patrol" for the" con-tinuousfirepatrol)

G. Dry Chemical Systems G. Dry Chemical Systems The fixed dry chemical systems Each dry chemical system shall be located in the following areas verified to be OPERABLE:

shall be OPERABLE:

1. Diesel Generator Room "A". A. At least once per 6 months by

2. Diesel Generator Room "B".

checking all stored dry chemical containers by pressure and weight APPLICABILITY: against the required minimums.

At all times when equipment in B. At least once per 18 months by:

the protected area is required to be operable. 1. Verifying the system actuates ACTION.

• manually and automatically, upon receipt of a simulated With a dry chemical system inop- test signal, and erable, establish a continuous fire patrol with backup fire sup- 2. Performance of a flow test pression equipment for the un- through headers and nozzles protected areas within one hour; to assure no blockage.

restore the system to OPERABLE status within 14 days or prepare and submit a Special Report to the Commission within the next 30 days outlining the action taken, the cause of the inoperability and the plans for restoring the system to OPERABLE status.

H. Yard Hydrants and Exterior Hose H. Yard Hydrants and Exterior Hose Houses Houses The yard hydrants and exterior hose

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Each hydrant shall be verified houses shown in Table 3.12-2 shall OPERABLE:

be OPERABLE.

APPLICABILITY: At all times. 1. At least once per month by a visual inspection of the hose ACTION: house to assure all equipment With a yard hydrant inoperable, is available.

within one hour have a sufficient number of additional lengths of 2. At least twice per year (once 2-1/2 diameter hose located in in the fall and once in the an adjacent OPERABLE hydrant,s spring) by inspecting each out-hose house to provide service to door fire hydrant the area protected by the inoper-able hydrant. 3. At least once per year by per-forming surveillance requirements lgg2kNS[ o!$0$ 3 E.3.b or c.

p PDR AmendmentNo.$ 206e-1 ;

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3/4.12F FIRE BARRIER PENETRATION SEALS The functional integrity of the fire barrier penetration seals ensures that fires will be confined or adequately retarded from spreading to adjacent portions of the facility. This design feature minimizes the possibility of a single fire rapidly involving several areas of the facility prior to detection and extinguishment. The fire barrier penetration seals are a passive element in the facility fire protection program and are subject to periedic inspection.

During periods of time when the seals are not functional, a continuous fire patrol is required to be maintained in the vicinity of the affected seal until the seal is restored to functional status.

The substitution of action statements from " continuous fire patrol" to "once per hour fire patrol" for the fire penetration barrier between the main steam tunnel and turbine building is based on:

(1) Only one fire barrier between the Turbine Building and reactor building is required. Thus, the steam tunnel can be included with either the RHR "A" Valve Room or Turbine Building fire areas.

(2) The existing configuration (ie. no-door and an unrated blowout assembly) provides adequate fire separation and protection capabilities on the following bases:

( (a) Combustible loadings in the areas of concern are very low. Transient loadings are administratively controlled.

(b) The blowout panel is constructed of materials consistent with " rated" fire barriers offering protection up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />.

(c) A fire detection system exists in the RHR Valve Room and a fire suppression system exists in the Turbine Building.

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-(. l Amendment 29

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