ML17055D626
| ML17055D626 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 02/26/1988 |
| From: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| Shared Package | |
| ML17055D625 | List: |
| References | |
| 50-410-87-45, NUDOCS 8803030237 | |
| Download: ML17055D626 (2) | |
Text
~
~
APPENDIX A NOTICE OF VIOLATION Niagara Mohawk Power Corporation Nine Mile Point, Unit 2 Docket No. 50-410 License No. NPF-69 As a result of the inspection conducted on December ll, 1987 to February 2,
- 1988, and in accordance with NRC Enforcement Policy (10 CFR Part 2, Appendix C) the following violation was identified:
Nine Mile Point Unit 2, Technical Specification (TS) 3.3.2 states that, in Modes 1, 2 and 3, primary containment isolation instrumentation for reactor vessel Level 2 and Level 1 isolations shall be operable and that the actuation setpoints for these instruments shall be consistent with (equal to or more conservative than) the Trip Setpoints specified in TS Table 3.3.2-2.
Similarly, Technical Specification 3.3.3 states that, in Modes 1, 2, and 3,
and when High Pressure Core Spray (HPCS) is required to be operable in Modes 4 and 5, instrumentation for HPCS Condensate Storage Tank (CST)
Level-Low shall be operable and the actuation setpoints for these instruments shall be more conservative than the allowable setpoint values specified in TS Table 3.3.3-2.
If one of the two CST Level-Low instruments is inoperable, it shall be placed in a tripped condition within one hour or HPCS shall be declared inoperable.
Contrary to the above:
a.
For various periods of time between June 1987 and January 1988, the unit had been operated in Modes 1,2 and 3 with the reactor vessel Level 2 and Level 1 Primary Containment Isolation System (PCIS) functions inoperable.
The trip setpoints for these PCIS instruments were found to have been originally,set below the Trip Setpoint specified in TS Table 3.3.2-2.
b.
For various periods of time between November 1986 and January
- 1988, the unit had been operated in Modes 1 through 5 with inoperable HPCS CST Level-Low instrumentation.
The actuation setpoints of these two instruments were determined to be below the TS.Table 3.3.3-2 allowable Trip Setpoint, and neither of the level transmitters had been placed in the tripped condition nor had the HPCS system been declared inoperable.
These violations collectively have been categorized as a Severity Level IV Violation.
(Supplement I).
Although 10 CFR 2, Section 2.201, requires you to submit a written statement of explanation to this office, no response to this violation is required because it was corrected prior to the completion of our inspection and reviewed by the inspectors.
8803030237 880226 PDR ADOCH 05000220 6