ML20127M481

Proposed Tech Specs Revising TS Section 4.7.10.e,to Extend SR Frequency for Snubber Functional Tests by Allowing one-time Extension to Current 18 Month Surveillance & Addl 25% Allowed by TS 4.0.2

ML20127M481
Person / Time
Site:	Millstone
Issue date:	01/15/1993
From:	NORTHEAST UTILITIES
To:
Shared Package
ML20127M476	List: B14347, Application for Amend to License NPF-49,changing TS Section 4.7.10.e,to Extend SR Frequency for Snubber Functional Tests by Allowing one-time Extension to Current 18 Month Surveillance,Plus Addl 25% Allowed by TS 4.0.2 ML20127M481
References
NUDOCS 9301280214
Download: ML20127M481 (2)

Text

_ _ _ _ _ _ _ _ _ _ _ _ - _ _ _ _ _ _ _ _ _ _ _ _

. . 1 Q.ocket llo. 50-42'l B14347 Attachment 1 Millstone fluclear Power Station, Unit tio. 3 Proposed Revision to Technical Specifications Snubber functional Testing January 1993 9301200214 930115 PDR ADOCK 05000423 P PDR

l

. y > i, .

. 1 PLANTSJSTEMS l

SURVEILLANCE RE0VIREMENTS (Continued) type that may be generically susceptible; and (2) the affected snubber is functionally tested in the as-found condition and determined OPERABLE per Specification 4.7.10.f. All snubbers found connected to an inoperable common hydraulic fluid reservoir shall be counted as unacceptable for determining the next inspection interval. A review and evaluation shall be performed and documented to justify continued operation with an unacceptable snubber. If I continued operation cannot be justified, the snubber shall be  !

declared inoperable and the ACTION requirements shall be met.

d. Transient Event inspecti1D An inspection shall be performed of all snubbers attached to -

sections of systems that have experienced unexpected, potentially damaging transients as determined from a review of operational data and a visual inspection of the systems within 6 months following such an event. In addition to satisfying the visual inspection acceptance criteria, freedom-of-motion of mechanical snubbers shall be verified using at least one of the following: (1) manually induced snubber movement; or (2) evaluation of in-place snubber piston setting; or (3) stroking the mechanical snubber through its full range of travel,

e. Functional Tests During the first refueling shutdown and at least once per 18 months

• thereafter during shutdown, a representative sample of snubbers of '

each type shall be tested using one of the following sample plans.

The sample plan for each type shall be selected prior to the test period and cannot be changed during the test period. The NRC Regional Administrator shall be notified in writing of the sample

plan selected for each snubber type prior to the test period or the sample plan used in the prior test period shall be implemented

1) At least 10% of the total of each type of snubber shall be functionally tested either in-place or in a bench test. For

each snubber of a type that does not n'eet the functional -test i

acceptance criteria of Specification 4.7.10f., an additional 5% -

of that type of snubber shall be functionally tested until no .

more failures are found or until all snubbers of that type have been functionally tested; or

• Except that the surveillance requirement due no later than January 22, 1993, l

may be deferred until the next-refueling outage, but no later than September 30, 1993, whichever is earlier. .

MILLSTONE - UNIT 3 3/4 7-23' Amendment A2 0109

.