ML20248E935
| ML20248E935 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 10/02/1989 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20248E933 | List: |
| References | |
| NUDOCS 8910060128 | |
| Download: ML20248E935 (3) | |
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UNITED STATES j%.
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WASHINGTON, D. C. 20555 '
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gF[ETYEVALUATIONBYTHEOFFICEOFNUCLEARREACTORREGULATIONSUPPORTING AMENDMENT NOS. 149 AND 152 TO FACILITY CPERATING LICENSE NOS. DPR-44 and DPR 56 k
PHILADELPHIA ELECTRIC COMPANY 7
PUBLIC SERVICE ELECTRIC AND GAS COMPANY DELMARVA POWER AND LIGHT COMPANY ATLANTIC CITY ELECTRIC COMPANY PEACH BOTTOM ATOMIC POWER STATION, UNIT NOS. 2 AND 3 DOCKET NOS. 50-277 AND 50-278
1.0 INTRODUCTION
'By letter dated March 9, 1989, Philadelphia Electric Company requested i
an amendment to Facility Operating License Nos. DPR-44 and DPR-56 for Peach Bottom Atomic Power Station, Unit Nos. 2 and 3.
These amendments t
to Technical Specification pages 217, 219 and 222 would reflect the installation of an additional transformer (the no. 34? startup transformer) to supply offsite power to the station. The amendment would
. eliminate uncertainty as to whether the new transformer is a permissible offsite source, would achieve more consistency with the Standard Technical Specifications for boiling water reactors and would include the additional transformer in the Bases.
-2.0 EVAt.UATION
-The station receives power from two separate off-site sources; one.on the 1
Unit 2 side and one on the Unit 3 side. The Unit 2 source is the 13.2 KV l
startup transformer switchgear No. 2 which is not directly affected by I
this amendment. The Unit 3 source is the 13.2 KV startup regulating transformer switchgear No. 3.
Since installing the additional No. 343 transformer the no. 3 switchgear can receive power from either of two sources, the No. 343 transformer or the energency auxiliary regulating transformer No. 3, 1
l The No. 343 transformer was installed in 1985 to serve as an alternate to en existing transformer that had been exhibiting evidence of possibic l
degradation and which subsequently failed in April 1986. The wording of the Technical Specification (TS) Limiting Condition for Operation (LCO) re#1ects the configuration of the system prior to the installation of the No. 343 transformer and by referring to specific pieces of equipment may e910060128 s91002,
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.,; lead'to confusion regarding,the acceptability of either the No. 343 or-l the No. 3-transformer as a source for the No. 3 switchgear. Therefore the licensee has proposed to amend.the LCO 3.9.A.1 language to refer.to two physically independent circuits.between the.offsite transmission-network and the onsite Class IE distribution system without' a reference to specific pieces of equipment. The licensee also proposes to make related changes to LCO 3.9.B.1 to provide more consistency with Standard Technical Specification language and thereby'to clarify that with either the No. 343 or the No. 3. transformer inoperable, the other one constitutes an acceptable source for the No. 3 switchgear and does not J
require entering the LC0 requirement for action. Corresponding' changes are made to LC0 3.9.B.2 and to the associated BASES.
The staff agrees with the licensee that the amendment would provide a clarification regarding the acceptability of use of. Transformer No. 343.
Therefore it is the view of the staff that the change is only in the-Technical Specification language, thus, making clear that either Transformer No. 343 or Transformer No. 3 may be used as' the source of 220 KV power to the Start-up Regulating Transformer Switchgear No. 3.
The adequacy of Transformer No 343 in this regard, was also the subject of a recent NRC' staff inspection as reported in Inspection Report 50-277/89-07; 50-278/89-07. The' staff found the use of Transformer No.
343 to be a proper and adequate-substitute for Transformer No. 3.
Therefore the staff considers the proposed change to the Technical Specification, which confirms that either the No. 343 or the No. 3 transformer constitutes an acceptable. source for the switchgear No. 3, to be acceptable.
3.0 ENVIRONMENTAL-CONSIDERATIONS Pursuant to 10 CFR 51.21, 51.32 and 51.35, an environmental assessment and finding of no significant impact have been prepared and published in the-Federal Register on September 26,1989(54FR39483). Accordingly, based upon the environmental assessment, the Commission has determined that the issuance of the amendments will not have a significant effect on the quality of the human environment.
4.0 CONCLUSION
The Commission made a proposed determination that the amendments involve no significant hazards consideration which was published in the Federal Register (54 FR 27235) on June 28, 1.989 and consulted with the State of Pennsylvania. No public comments were received and the State of Pennsylvania did not have any comments.
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'The staff has concluded : based on'the considerations discussed above,'that:
(1) there is reasonable assurance that the health and safety of the public will not be endangered by operation ~ fn this proposed manner, and (2) ruch' 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.
Principal Contributor: Charles E. Morris Dated: October 2, 1989
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