ML20070S847
| ML20070S847 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 01/27/1983 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20070S840 | List: |
| References | |
| NUDOCS 8302080054 | |
| Download: ML20070S847 (2) | |
Text
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UNITED STATES f'
g NUCLEAR REGULATORY COMMISSION
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- p WASHINGTON, D. C. 205C k.....o#
SAFETY EVALUATION BY THE OFFICE'0F NUCLEAR REACTOR REGULATION RELATED TO AMEI. INT NO.17 TO' FACILITY OPERATING LICENSE NO. DPR-75 PUBLIC SERVICE ELECTRIC AND GAS COMPANY, PHILADELPHIA -ELECTRIC COMPANY, DELMARVA POWER AND LIGHT COMPANY, AND ATLANTIC CITY ELECTRIC COMPANY SALEM NUCLEAR GENERATING STATION, UNIT NO. 2 DOCKET NO. 50-311 Introduction By letter dated October 7,1982, Public Service Electric and Gas Company (the licensee) requested that the current requirement to install upper inspection ports in the steam generators for the Salem Generating Station Unit No. 2 prior to start up after the first refueling be removed from their license or delay the installation until the ierond refueling outage. The requirement was originally included as Licensing Condition 2.C.15(b) in the Facility Operating License No. DPR-75 for Unit No. 2.
Evaluation Our original basis for requiri.ng installation of the upper inspection ports was concerned wi'th the early detection of the denting phenomenon and l
associated tube support plate defonnation. The denting phenomenon has historically first occurred on the hot leg side of the steam generator and progressed from the lower tube support plates to the upper tube support plates. The current state-of-the-art is such that adequate means are now available (e.g., eddy current testing, profilometry tube gauging and visual inspectiori through the lower inspection ports) to detect the onset of extensige tenting, associated with support plate cracking and "hourglassing" l
of support plate flow slots.
Therefore, any occurrence of denting to the point where visual indication would be apparent through an inspection port located above the top tube support plate would occur after the other techni-ques had given earlier warning.
Summary Based on the above reasons, we find that there is no longer adequate justi-fication for installing upper-inspection ports in the Salem 2 steam generators at the first refueling outage, and that the licensee's previous commitment for installing upper inspection ports is no longer applicable and is not required.
Based on the above, we conclude that License Condition 2.C.15(b) could be removed from Facility Operating License No. DPR-75 for Salem Unit No~.
2'.
However, the staff is currently conducting an on-going review of steam generators.
New findings from this review may impact on this conclu-sion.
Therefore, we recommend that License Condition 2.C.15(b) be modified to allow delaying of installation of the inspection ports until the second refueling outage.
8302080054 830127 PDR ADOCK 05000311 P
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2 Environmental Consideration We have determined that the amendment does not authorize a change in
~ ffluent types or total amounts nor an increase in power level and e
will not result in any significant environmental impact. Having made this determination, we have further concluded that the amendment involves an action which is insignificant from the standpoint of environmental impact and, pursuant to 10 CFR 51.5(d)(4), that an environmental impact statement or negative declaration and environ-mental impact appraisal need not be prepared in connection with the f
issuance of this amendment.
Conclusion We have concluded, based on the considerations discussed above, that:
(1) because the amendments do not involve a significant increase in.
i the probability or consequences of an accident previously evaluated, i
do not create the possibility of an accident of a type different from any evaluated previously, and do not involve a significant reduction in a margin of safety, the amendments do not involve a significant hazards consideration, (2) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner, and (3) such activities will be conducted in compliance' with the Commission's regulations and the issuance of the amendments will not be inimical to the common defense and security or to the health and safety of'the public.
Date: January 27, 1 983 Principal Contributors:
H. Conrad W. Ross
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