ML20091D121

Proposed Tech Specs Page 3/4 7-32 Clarifying Title of Table 4.7-3, Snubber Visual Insp Interval

ML20091D121
Person / Time
Site:	Millstone
Issue date:	04/01/1992
From:	NORTHEAST NUCLEAR ENERGY CO.
To:
Shared Package
ML20091D116	List: B14091, Amends 920203 Application for Amend to License DPR-65, Revising TS Per Generic Ltr 90-09 Re Snubber Visual Insp Intervals.Encl TS Page 3/4 7-32 Inadvertently Omitted from 920203 Submittal ML20091D121
References
NUDOCS 9204080087
Download: ML20091D121 (1)

Text

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l TABLE 4.7-3 -

SNUBBER VISUAL INSPECTION INTERVAL NUMBER OF UNACCEPTABLE SNUBBERS l o 3:

P Column C f "G Population Column A Column B or Category Extend Interval Repeat Interval Reduce Interval a (Notes 3 and 6) (Notes 4 and 6) (Notes 5 and 6) l M (Notes 1 and 2) l 0 0 I f b 1 0 0 2 l i5 80 4 l

• 100 0 1 t

z 0 3 8 ,

f t >o;$

m 150 200 300 2

5 5

12 13 25 l

I E8 95 The next visual inspection interval for a snubber population or category size shall be determined based g Note 1:

un upon the previous inspection interval and the nucber of unacceptable snubbers found during that i 82 interval. Snubbers may be categorized, based upon their accessibility during power operation, as However, that accessible or inaccessible. These categories may be examined separately or jointly.

ggo w decision must be made and documented before any inspection and that decision shall be used as the mu 1 basis upon which to determine the next inspection interval for that category.

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" Note 2: Interpolation between population .. Jory sizes and the number of unacceptable snubbers is permissible. Use next lower integer fo. ...e value of the limit for Columns A, B, or C f f that integer includes a fractional value of unacceptable snubbers as determined by interpolation.

the next Note 3: If the number of unacceptable snubbers is equal to or less than the number in Column A, inspection interval may be twice the previous interval but not greater than 48 months.

E If the number of unacceptable snubbers is equal to or less than the number in Column B but greater than

@ Note 4: the number in Column A, the next inspection interval shall be the same as the previous interval.

If the number of unacceptable snubbers is equal to or greater than the number in Column C, the next inspection interval shall be two-thirds of the previous interval. However, if the number of

" Note 5:

8-unacceptable snubbers is less than the number in Column C but greater than tne number in Column B, Q the next interval shall be reduced proportionally by interpolation, that is, the previous interval

- shall be reduced by a factor that is one-third of the ratio of the difference between the number

@ of unacceptable snubbers found during the previous interval and the number in Column B to the difference in the numbers in Columns B and C.

Note 6: The provisions of Specification 4.0.2 are applicable for all inspection intervals up to and including 48 months.

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