ML20034B744
| ML20034B744 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 04/22/1990 |
| From: | Higgins W PORTLAND GENERAL ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML20034B741 | List: |
| References | |
| NUDOCS 9004300285 | |
| Download: ML20034B744 (4) | |
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PORTLAND GENERAL ELECTRIC COMPANY EUGENE WATER-& ELECTRIC BOARD.
AND PACIFIC POWER & LICHT CONDANY uj Operating License NPF-1 Docket-50-344 License Change Application.196-1 1
ll This License. Change Application (LCA) requests emergency amendment of the Operating License NPF-1 for. the Trojan Nuclear Plant to revise the' Trojan Technical' Specifications -(TTS) to incorporate an -exemption to TTS 3.0.4, i
" Applicability" into TTS 3.7'.6.1, " Control' Room Emergency Ventilation System".-
-j PORTLAND CENERAL ELECTRIC COMPANY
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Wal er gins.
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Senior esident Cenerating Division <
Subscribed and sworn to before me this 22nd day of April 1990.
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1 Notary Public of Oregon'
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b 9004300285 900422 PDR ADOCK 05000344 P
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UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION L
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PORTLAND GENERAL ELECTRIC COMPANY,
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Docket 50-344.
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THE CITY OF EUGENE,! OREGON, AND
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Operating License NPF-1 l
PACIFIC POWER & LIGHT COMPANY
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(TROJAN NUCLEAR PLANT)
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iq CERTIFICATE OF SERVICE-'
l I hereby certify that copies of_ License Chan6e Application 196, to the Operating License for the Trojan. Nuclear Plant, dated April 22, 1990, j
have been served on the following by hand delivery or by deposit in the.
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United States mail, first class, this 22nd day of April 1990:
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State.of Oregon
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Department of Energy i
625 Marion St NE Salem OR 97310 Mr. Michael J. Sykes l
' Chairman of County Commissioners-Columbia County Courthouse St. Helens OR 97051 y
Scott A. Bauer. Manager Nuclear Regulation ~ Branch Nuclear Safety &_ Regulation i
subscribed and sworn to before me this 22nd day of April 1990.
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Notary Public of Oregon
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3 LCA 196 Attachment A page 1 of 3-Reason for Change and Justification of Emergency conditions Trojan is presently in MODE 6 with refueling in progress.
Trojan Technical Specification (TTS) 3.0.4,'" Applicability", states the entry.
into an OPERATIONAL MODE shall not be made unless the conditions of the Limiting Condition /For Operation (LCO) are met without reliance on the
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provisions contained in the ACTION statements.
On April-18, 1990, an A train outage' began, rendering the A train Service Water System inoperable.. This also rendered the A train Control Room Emergency Ventilation System (CB-1) inoperable, and-caused entry into TTS 3.7.6.1, l
" Control Room Emergency-Ventilation System", ACTION statement a. for
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I MODES 5 and 6.
l The A train outage is scheduled to last until approximately May 13,.
l 1990.
It is currently anticipated that on April 25, 1990, the outago schedule will' support transiting from MODE 6 to MODE 5. f However,
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TTS 3.7.6.1 does not have a 3.0.4 exemption and thus entry into MODE Si
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would be prevented.
1 Portland General Electric Company (pCE) did not anticipate thi, conflict with TTS 3.7.6.1 when it submitted changes,to this specification that were approved and issued as Amendment 152.on May 15, 1989.- (These changes revised the Technical Specifications-to make them consistent with 1
-Revision 4 of the Westinghouse Standard' Technical' Specifications.) This i
conflict was apparent prior to the start of the outage'and the outage j
schedule was prepared to avoid this conflict. -However, unexpected delays j
during the outage have caused the present situation.
In that the ACTION statement for TTS 3.7.6.1 allows one train of'CB-1 to be inoperable in either MODE 5 of 6, and that MODE 5 is actually a safer status for the plant than MODE 6, PGE concludes that there is no safety i
significance to adding a TTS 3.0.4 exemption to TTS 3.7.6'.1 for MODES 5 and 6.
d PGE submitted License Change Application (LCA) 186 on November 30, 1989 that contained changes to the TTS per Nuclear Regulatory Commission (NRC) l Generic Letter 87-09 that will resolve this issue for the long term.
Specifically, the proposed TTS 3.0.4 would prohibit entry into a MODE when the Limiting Conditions for Oper tion are not met and the associated ACTION requires a shutdown if they are not met within a specified time interval. Thus, in the present esse, this version of TTS 3.0.4 would allow POE to transit from MODE'6 to MODE 5 as the ACTION statement for TTS 3.7.6.1 in MODES 5 and 6 do not require a shutdown..However, this LCA is still under NRC review and will not be approved in time to resolve i
the current conflict.
This Emergency Technical Specification change therefore proposes to revise TTS 3.7.6.1, " Control Room Emergency Ventilation System (CB-1)",
to allow entry into MODE 5 or MODE 6 with one train of CB-1 inoperable by i
adding an exemption to TTS 3.0.4 to the MODE 5 and 6 ACTION statements of TTS 3.7.6.1.
If th1S change is not approved, PGE will have to wait until the A train outage is complete before entering intn MODE 5.
This would result in a delay of several days in startup from the outage.
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LCA 196 e
Attachment A Page 2 of 3' Description of change Add - an exemption to TTS 3.0.4 to TTS 3. 7.6.1.
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. Determination of Significant Hazards Consideration-j In accordance with the requirements of Title 10, of_the Code of Federal
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Regulations, 'Part S0.92 (10 CFR 50.92), this LCA is judged to involve no i
significant hazards consideration based upon the following information:
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Does the proposed license' change involve a significant increase in
'i the probability or consequences of an_ accident?
The addition of a TTS 3.0.4 exemption to TTS 3.7.6 1 does not affect any current accident analyses in that_the TTS allows.for one. train of CB-1 to be inoperable-for both MODE 5 and 6 an indicated in-the ACTION statement, Additionally, the proposed revisions to TTS 3.0.4, made in accordance i
j with the' guidance found in Generic Letter 87-09 and submitted in-1 LCA 186, would allow transiting from MODE 6 to MODE 5.
This change is consistent with that endorsed by Generic Letter 87-09.
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Does the-proposed license change create the possibility of a new of different kind of accident from any accident previously analyzed?
The addition of a TTS 3.0.4 exemption to TTS 3.7.6.1.does not create any new scenarios in that having one train of CB-1-inoperable in both i
MODE 5-and 6 is allowed per the' ACTION statement. Additionally, the proposed revisions to TTS 3.0.4, made in accordance with the'suidance found in Generic Letter 87-09 and submitted'in'LCA 186, would allow
'l transiting from MODE 6 to MODE 5.
This change.s consistent'with i
that endorsed by Generic Letter 87-09, 3.
Does the proposed license change involve a'significant^ reduction in a margin of safety?
i The addition of a TT.9 3.0.4 exemption to TTS 3.7.6.1 does not affect a margin of safety as the present ACTION statement allows for one train of CB-1.to be inoperable in both MODES 5 or 6'.
Safety / Environmental Evaluations Safety and environmental evaluations were performed as required by 10 CFR 50 and the TTS. The review determined that -the proposed change does not create an unreviewed safety question, nor does it create an unreviewed environmental question.
Schedule Considerations It is requested that the effective dato of this amendment be the date of l
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1 issuance by the NRC.
l KBR/bsh/4690W.0490 I
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