ML20073M042
| ML20073M042 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 04/12/1983 |
| From: | DUQUESNE LIGHT CO. |
| To: | |
| Shared Package | |
| ML20073M038 | List: |
| References | |
| NUDOCS 8304210397 | |
| Download: ML20073M042 (2) | |
Text
-
PLANT SYSTEMS 3/4.7.12 SNUBBERS LIMITING CONDITION FOR OPERATION 3.7.12 All snubbers listed in Tables 3.7-4a and 3.7-4b shall be OPERABLE.
APPLICABILITY: MODES 1, 2, 3 and 4.
(MODES 5 and 6 for snubbers located on systems ** required OPERABLE in those MODES).
l ACTION:
With one or more snubbers inoperable, 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 evaluatian per Specification 4.7.12.c on the supported component or declare the supported system inoperable and follow the appropriate ACTION statement for that system.
SURVEILLANCE REQUIREMENTS 4.7.12 Each snubber shall be demonstrated OPERABLE by performance of the following augmented inservice inspection program and the requirements of Specifica tion 4.0.5.
a.
Visual Inspections The first inservice visual inspection of snubbers shall be performed af ter four months but within 10 months of commencing POWER OPERATION and shall include all snubbers listed in Tables 3.7-4a and 3.7-4b.
If less than two (2) snubbers are found inoperable during the first inservice visual inspection, the second inservice visual inspection shall be performed 12 months f; 25% from the date of the first inspection. Otherwise, subsequent visual inspections shall be performed in accordance with the following schedule:
No. Inoperable Snubbers Subsequent Visual i
per Inspection Period Inspection Period * #
0 18 months + 25%
1 12 months T 25%
2 6 months I 25%
l 3,4 124daysf[25%
5,6,7 62 days f; 25%
8 or more 31 days f; 25%
The snubbers may be categorized into two groups:
those accessible and those inaccessible during reactor operation.
Each group may be inspected independently in accordance with the above schedule.
l
- The inspection interval shall not be lengthened more than one step at a time.
I l
- The provisions of Specification 4.0.2 are not applicable.
l l
- These systems are defined as those portions or subsystems required to prevent releases in excess of 10 CFR 100 limits.
BEAVER VALLEY - UNIT 1 3/4 7-22 l
l 8304210397 830412 DESIRED WORDING PDR ADOCK 05000334 P
n.
=
PLANT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) l e.
Mechanical Snubbers Functional Test Acceptance Criteria The mechanical snubber functional test shall verity that:
1.
The force that initiates free movement of the snubber rod in either tension or compression is less than the specified maximum drag force.
2.
Activation (restraining action) is achieved within the specified range of velocity or acceleration in both tension and compression..
3.
Snubber release rate, where required, is within the specified range la compression or~ tension.
For snubbers specifically required not to displace under continuous load, the ability of the snubber to withstand load without displacement shall be verified.
f.
Snubber Service Life Monitoring *
'l A record of the service life of each snubbct, the date at which the designated service life commences and the installation and maintenance records on which the designated service life is based shall be maintained as required by Specification 6.10.2.m.
l Concurrent with the first inservice visual inspection and at least once per 18 months thereaf ter, the installation and maintenance records for each snubber listed in Tables 3.7-4a and 3.7-4b shall be reviewed to verify that the indicated service life has not been exceeded or will not be exceeded prior to the next scheduled snubber service life review.
If the indicated service life will be exceeded prior to the next scheduled snubber service life review, the snubber service life shall be. reevaluated or the snubber shall be replaced or reconditioned so as to extend its service life beyond the date of the next scheduled service life review.
This reevaluation, replacement or reconditioning shall be indicated in the records.
For purposes of establishing a baseline for the determination of service life monitoring, this program will be implemented over 3 successive refueling periods.
BEAVER VALLEY - UNIT 1 3/4 7-29 PROPOSED WORDING I
1
. - -