ML20107A045
| ML20107A045 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 02/07/1985 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20107A037 | List: |
| References | |
| NUDOCS 8502190240 | |
| Download: ML20107A045 (3) | |
Text
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UNITED STATES j fu
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NUCLEAR REGULATORY COMMISSION
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WASHINGTON. D. C. 20555
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..s SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION
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RELATED TO AMENDMENT. NO. 29. TO FACILITY OPERATING LICENSE NO. DPR-75 PUBLIC~ SERVICE' ELECTRIC AND GAS COMPAN PHILADELPHIA EltGIMIC COMPANY DELMARVA POWER AND LIGHT COMPANY, AND
, ATLANTIC CITY ELECTRIC EOMPANY SALEM NUCLEAR GE'NERATION STATION, UNIT NO. 2 DOCKET N0. 50-311 Introduction On January 27, 1983, the C,ommission. issued Amendment 17 to the Salem, Unit 2, Generating Station Facility Ope' rating License modifying License Condition 2.G:. 15(b) to allow the licensee to delay the required install,a, tion ~if upper inspection ports in the steam generators until
.the second refueling outage.
By letter dated September 29,1983. the
' licensee requested that the requirement to install uppe,r inspection' ports be deleted.
Evaluation and Sumary i
Our originial basis for the installation of steam generator upper inspection ports was to facilitate the evaluation and monitoring of the effects of denting in the upper portion of the-steam generator tubes.
- However, experience has shown that visual inspection of the' uppermost support p1 ate U-bend tfansition area of the inner row tubes is no longer necessary.
Denting usually takes place initia11y'on the inlet side of th'e steam i
generator in the lower part of the tube bundle.
The onset denting therefore, could be visually detected earlier in this area through the lower inspection l
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-. ports.
In addition, the current state-of-the-art of nondestructive inspection methods such as feddy current testing, profilometry and tub'e j.
gaging are more effective than Visual inspection for thelearly detection and monitoring of denting. ' Another factor against the installation of upper insp'ection. ports is.that it is desirable to minimize the numbe.
of penetpations in the, steam generator vessels so as not to provide the opportunity to introduce potential foreign objects into the seconda y side.
In the. future, if degradation takes place in the upper steam generator reginn and inspection ports are deemed necessary, it can -
4 be installed then.
B' sed on t above, we find that there is no longer a necessity for a
the installation of u. aper inspection ports in the absence of active degradation mechanisms in the upper tube bundle.
Therefore, we recommend that the licensing condition 2.C.15 (b) be removed-from the Salem Generating' Station Unit 2, Facility Operating Licensee.
' Environmental Consideration This amendment involves a change in the installatio'n or use of a facility l
component located within the restricted area as defined in 10 CFR Part 20.
l The staff has determined that the amendment involves no significant increase
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in the amounts, and no significant, change in the types, of any effluents l
that may be releasec offsite, and that there is no sigr.ificant increase in l
l ir.dit icual or cur.t 'nive cccCpationci radiatier. 6.pe,s ure.
The Cerr:issic' tas i
previously issued a proposed findine thct this ar.= am involves no significant hazards consideration and there has beer oc public comment on
r such finding. Accordingly, this amendment meets the eligibility criteria J
for.categoricalexclusion.setforthin10CFP,Sec51.22(c)(9).
Pursuant to 1
..10 CFR 51.22'(b)*no environmental impact s'atement:or environmental
.,ssessment need be prepared in connection with.the i'suance of this s
amenament.
Conclusion We have concluded, based o'n the considerations discussed above, that:
(1) there is reasonable assurance that the health and safety of~the
.w public will not be endangered by operation in the proposed manner, and (2Thuch activities will be conducted in compliance with the Comission's regulations and the issuance of this amendment will not be inimical to the comon defense and security or to the health and l
safety of the public.
4 Dated: February 7, 1985 Principal Contributcir:
H. Conrad e'
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