ML20012B661
| ML20012B661 | |
| Person / Time | |
|---|---|
| Site: | Zion File:ZionSolutions icon.png |
| Issue date: | 03/07/1990 |
| From: | Davis A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Reed C COMMONWEALTH EDISON CO. |
| Shared Package | |
| ML20012B662 | List: |
| References | |
| NUDOCS 9003160063 | |
| Download: ML20012B661 (2) | |
Text
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(,i fg peo-9o 4 n'~
l MAR 7 1990 t
Docket No.
e Commonwealth Edison Company ATTN:. Mr. Cordell Reed-Senior Vice President
-Post Office Box'767 g
Chicago, IL 60690-
- Gentlemen
- =
L We have reviewed your letter dated March 7,1990, documenting your oral' request:for an extension to the Waiver of Compliance granted by this office on March 2,1990, and documented in our letter to you dated March 5,1990.
,1 This request 1for extension applies only to Unit 2 and will continue the Waiver
~
.of Complience regarding:the requirement of a February 29, 1980, Confirmatory:
-Order that addresses-emergency diesel generator (EDG) operability at the Zion' Station'., A copy of your letter is enclosed.
b Appendix A.LItem B.6 of the Order stipulates that.with any unit EDG inoper--
- able and'with six or more failures'in the last 100 tests of a unit's:EDGs,-
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-the affected unit be placed in hot shutdown within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in cold shutdown-within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. Both-Zion Units 1 and'2 diesel generators have experienced six or more failures in-the last 100 tests.
Because.the "0" EDG which failed in'this case-is shared,'both units:are subject to this requirement.
j
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- 1. understand that in accordance with the~ commitments made regarding the March 2, 1990, Waiver of Compliance, Unit I was placed in cold shutdown within' the time-limits granted. YouLrequested on March 6,J1990, an additional 144-
. hours'for Unit 2 to remain:in ' Hot Shutdown to allow time for testing.~of safety related systems which is required to be conducted.with the plant at normal operating temperature and pressure.
Upon completion of.the' testing, the unit-will commence a:cooldown'and proceed to Cold Shutdown or at-the expiration.of the additional l144 hours, Unit 2 will commence cooldown by 1200 hours0.0139 days <br />0.333 hours <br />0.00198 weeks <br />4.566e-4 months <br /> on March'12,-1990,'and will be placed in Cold Shutdown byLO600 hours on
' March 13,i1990, to begin a refueling outage.
~,
I understand that during this 144 hour0.00167 days <br />0.04 hours <br />2.380952e-4 weeks <br />5.4792e-5 months <br /> extension of time for Unit 2, the Zion-Station will continue to take the compensatory actions described in my March 5,1990, letter to you which granted the original 96 hour0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> Waiver of
. Compliance.
I agree that your request for an extension to the March 2,1990 Waiver of Compliance meets the eligibility criteria in.10 CFP, 51.22(c)(9),and that pursuant to 10 CFR 51.22(b), no environmental impact statement need be
! prepared.
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- 9003160063 900307 3
PDR-ADOCK 05000304 i
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PDC L1
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Commonwealth' Edison Co.
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t I granted the requested extension on March 6,1990, based on trie continued
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minimal increase in risk associated with keeping Unit 2 in Hot Shu+down for i
an ' additional'144 hours0.00167 days <br />0.04 hours <br />2.380952e-4 weeks <br />5.4792e-5 months <br /> and thus avoiding an unnecessary thermal cycie on.
- the Unit 2 primary system.
ii A. Bert Davis 1
Regional Administrator b
Enclosure:
As stated o
cc w/ enclosure:.
T. J..Maiman, Vice President, O
PWR Operations T. Kovach,= Nuclear Licensing Manager
. T. Joyce, Station Manager LDCD/DCB (RIDS)
E Licensing Fee Management Branch Resident Inspector, RIII JRichard Hubbard' J. W. McCaffrey, Chief,.Public Utilities Division 1
- Mayor, City of Zion-Chandu Patel, Project
- Manager, NRR i
.- T. E. Murley, NRR G. M. Holahan, NRR
-J. Lieberman, OE A. T. Gody, Jr., NRR
' J. Clifford, ED0
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