ML17328A097
| ML17328A097 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 08/01/1989 |
| From: | Axelson W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML17328A096 | List: |
| References | |
| 50-316-89-21, NUDOCS 8908110152 | |
| Download: ML17328A097 (1) | |
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American Electric Power Service Corporation Docket No. 50-316 As a result of the inspection conducted on June 7 through July 18, 1989, and in accordance with the General Policy and Procedures for NRC Enforcement Actions (10 CFR Part 2, Appendix C), the following violation was identified:
Unit 2 Technical Specification 2.2. 1 requires reactor trip system instrumentation setpoints shall be set consistent with Trip Setpoint values shown in Table 2. 2-1.
For Overtemperature Delta-T and Overpower Delta-T the maximum channel trip points shall not exceed computed trip points by more than 3.3 percent and 2.6 percent Delta-T span respectively.
Technical Specification 3.3. 1. 1 requires the Overtemperature and Overpower Delta-T channels OPERABLE in HODEs 1 and 2, but provides that with the number of OPERABLE channels one less than the total number of channels, STARTUP and/or POWER OPERATION may proceed if the inoperable channel is placed in the tripped condition within one hour.
Contrary to the above, Unit 2 was in POWER OPERATION subsequent to Harch 31, 1989, with Channel 2 Overtem'perature and Overpower Delta-T trip points outside their respective accuracy ranges (both were over 4 percent high) and therefore inoperable, but the inoperable channels were not placed in the trip condition, pending data evaluation, until May 24, 1989.
This is a Severity Level IV violation (Supplement I).
Pursuant to the provisions of 10 CFR 2. 201, you are required to submit to this office within thirty days of the date of this Notice a written statement or explanatio'n in reply, including for each violation: (1) corrective action taken and the results achieved; (2) corrective action to be taken to avoid further violations; and (3) the date when full compliance will'e achieved.
Consideration may be given to extending your response time for good cause shown.
AUG 1
1989 Dated W.
L. Axe son, C ref Reactor Projects Branch 2
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