ML20095G791
| ML20095G791 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 04/24/1992 |
| From: | NRC |
| To: | |
| Shared Package | |
| ML20095G793 | List: |
| References | |
| TAC-M82599, NUDOCS 9204290139 | |
| Download: ML20095G791 (2) | |
Text
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PLANT _ SYSTEMS
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3/4.7.8-SNUBBERS LIMITING CONDITION FOR OPERATION 3.7.R 'All hydraulic and mechanical r,nubbers shall be OPERABLE.
APPLICABILITY:
M03ES 1, 2, 3, and 4.
MODES 5 and 6 for snubbers located on systems required OPERABLE in those OPT. RATIONAL MODES.
J ACTION:
With one or more snubbers inoperable on any system, within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> replace or restore the inoperable snubber (s) to OPERABLE status and perform an engineering evaluation per Specification 4.7.8g. on the attached component or declare the attached system inoperable and follow the appropriate ACTION statement for that system.
SURVELLIANCE REQUIREMENTS 4.7.8 Etch snubber shall be demonstrated OPERABLE by performance of the following augmented inservice inspection program and the requirements of Specificatica 4.0.5.
a.
Inspection Types As used in this specification, " type of snubber" shall mean snubbers of the same design and manufacturer, irrespective of capacity, b.
Visual Inspections Snubbers are catagorized as inaccessible or accessible during reactor operation.
Each of these categories (inaccessible and accessible) may be inspected independent?y according to the schedule determined by Table 4.7-2.
The visual inspection interval for each type of snubber chall be determined cased upun the criteria provided in Table 4.7-2 and tSa first inspection interval determined using this criteria shall ba based upon the previous inspectien interval as established sf the requirements in off t before amendment 73 9204290139 920424 DR ADOCK 0500 2
W/.TERFORD - UNIT 3 3/4 7-21 AMENDMENT NO. 2, 73 s.
TABLE 4.7-2 SNUBBER VISUAL INSPECTION INTERVAL NUMBER OF UNACCEPTABLE SNUBBERS icpulation Coluen A Column B Column C or Category Extend Interval Repeat Interval Reduce Interval (Notes 1 & 2) (Notes 3 & 6)
(Notes 4 & 6)
(Notes 5 & 6) 1 0
0 1
80 0
0 2
100 0
1 4
150 0
3 8
200 2
5 13 300 5
12 25 400 8
18 36 500 12 24 48 750 20 40 78 1000 or greater 29 56 109 Note 1:
The next visua' inspection interval for a snubber population or category size shall be determined based upon the previous inspection interval and the number of unacceptable snubbers found during that interval.
Snubbers may be categorized, based upon their secessibility during power operatica, as accessible or inaccessible.
These categories reay be examined separately or jointly.
- However, the licensee must make and document that decision before a.7y inspection and shall use that decision as the basis upon which to determine the next inspection interval for that category.
Note 2:
Interpolation between population or category sizes and the number of unacceptable snubbers is permissible.
Use next lower integer for the value of the limit for Columns A, B, or C if that integer includes a fractional value of unacceptable snubbers as determined by interpolation.
Note 3:
If the number of unacceptable snubbers is equal to or less than the number in Column A, the next inspection interval may be twice the previous interval but not greater than 48 months.
s WATERFORD - UNIT 3 3/4 7-21a AMENDMENT NO. 73 u