ML19331C104
| ML19331C104 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 08/08/1980 |
| From: | Knight J Office of Nuclear Reactor Regulation |
| To: | Novak T Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8008140169 | |
| Download: ML19331C104 (2) | |
Text
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UNITED STATES NUCLE AR REGULATORY COT.WISSION
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AUG 8 1250 70 MEMORANDUM FCR:
Thomas Novak, Assistant Director for Operating Reactors, OL FROM:
James P. Knight, Assistant Director for Components and Structures Engineering, DE
SUBJECT:
PILGRIM 1 BREAKWATER-RECCMMENDATIONS FOR CPERATIONAL MONITORING PROGRAM (TAC-7665)
WehaYecompletedour.reviewofthedamagetoandthesubsequentrepairs of the subject breakwater. A detailed review was also performed by cur consultant, Mr. Robert Jachowski, of the Coastal Engineering Research Center (CERC). Based on our site visit to the facility to survey the repairs and on our detailed reviews of submitted material, we conclude that the breakwater has been acceptably designed and repaired. We also conclude that certain measures will be required during plant operation to assure the integrity of the structure. These measures pertain to operational monitoring and timely repair of any damage which may occur.
These measures are necessary because there are some areas of the break.
water that have undersized stones.
Even though these portions have survived severe storms and will likely remain completely. stable, we consider it necessary to carefully monitor the potential movement of these smaller stones. The following actions should be immediately undertaken by the licensee:
1.
Dehelopacontinuousmonitoringprogramtodetectthecovementof, and damage to, the breakwater armor stone. The program should consist of the following:
Develop a' baseline photographic surhey of the breakwater for a.comp:rison with future conditions. The survey should be similar to the photographic record which was submitted as Exhibit 1 of the April 15, 1980 BeCo submittal to NRC.
In addition, aerial photos of the breakwater should be included.
b.
Dehelopaprogramtosurveyandphotographthebreakwaterat 12ast annually and after every major storm (where onshore winds exceed 60 mph). The program should include comparison of these phntos with those in the baseline study and.with those taken in previous years.
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addition, an analysis of any movement or potential problems should be included.
2.
If damage is detected in the programs outlined in (1), above, repairs should be' performed as soon as possible.
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Thomas ?:00ak 2-RUG 8 1230 t
TheaboYemeasuresshouldbemadepartofthelicensee'sreporting.
requirements. This review was performed by T. L. Johnson (x28117).
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SInesP.eqigh,As stant Director for Ldv:cmponentsandStructuresEngineering ision of Engineering cc:
T. Ippolito G. Lear i
W. Bivins J. Hannon i
T. Johnson ASLB PCR-Local PDR 1
R. Jachowski (CERC) e e
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