IR 05000275/2007023
| ML16342E051 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 03/03/1998 |
| From: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | |
| Shared Package | |
| ML16342E052 | List: |
| References | |
| 50-275-97-23, 50-323-97-23, NUDOCS 9804130381 | |
| Download: ML16342E051 (6) | |
Text
ENCLOSURE 1, REVISED PAGES OF NRC INSPECTION REPORT 50-275/97-23; 50-323/97-23 O
,6 9804130381.
980303 PDR ADQCK 05000275
-13-The inspectors reviewed the licensee's operability evaluation and found it to be technically sound.
The inspectors noted that on October 24, 1997, the licensee experienced a spurious safety injection event.
Timely operator action mitigated this event and prevented pressurizer overfill as discussed in NRC Inspection Report 50-275; 323/97019.
Therefore, the inspectors concluded that the licensee's reanalysis and operability evaluation to be conservative.
C.
~gclgjons Engineering personnel provided a timely and technically sound response to concerns with the design basis of the plant's response to a spurious safety injection signal.
E1.2 Technical S ecifica ions In er re a ions s ecio Sco e 37551 The inspectors reviewed the licensee's Technical Specifications interpretations to evaluate ifthey were consistent with NRC requirements.
b.
o sa d
indi s
NRC Information Notice 97-80, "Licensee Technical Specification Interpretations,"
discussed several issues in which licensees,had Technical Specifications interpretations that conflicted with the specific wording of the Technical Specifications.
In December 1996, Diablo Canyon personnel performed a review of their Technical Specification interpretations and identified several concerns with these interpretations.
After identifying these concerns, the licensee has continued to implement these interpretations while preparing license amendments for them.
Specifically, the inspectors had concerns with Technical Specifications interpretations 88-01 (applicability of 25% grace period for conditional surveillances), 89-07 (compliance with off-site power specifications), 94-08 (allowance of centrifugal charging pump usage during low temperature/over pressure conditions), 96-05 (actions to be taken when both undervoltage relays are inoperable), and 94-07 (use of positive displacement pump during low temperature/overpressure conditions).
These items are pending further NRC review to determine the validity of the licensee's position. This is an unresolved item (URI 50-275;323/97023-03).
-2-ITEMS OPENED AND CLOSED g)jeen~e 50-275;323/
97023-03 URI Questionable Technical Specification Interpretations (Section E1.2)
Closed 50-275/
95-006-00 50-275/
96-009-00 LER Loads moved over spent fuel pool with inoperable ventilation systems (Section 08.2)
LER Auxiliaryfeedwater pumps inoperable due to inadvertent blockage of a ventilation flow path (Section 08.3)
50-275/
96-002-00 LER 50-275/
96-004-00 LER 50-275/
85-043-00 LE R
= 50-323/
96009-01 VIO 50-275/
96019-02 VIO 50-275;323/
92016-04 IFI 0 ened and Closed Technical Specification 3.6.1.1 not met due to personnel error (Section M8.1)
Technical Specification 3.3.3.5 not met due to personnel error (Section M8.2)
Technical Specification 3.3.2 was not met due to an inadequate procedure (Section M8.3)
Loads moved over spent fuel pool with inoperable ventilation systems (Section 08.2)
Failure to report offclearance prior to removing ground buggies (Section 08.1)
Recirculation phase design basis (Section E8.1)
50-275/
97023-01 50-275/
97023-02 NCV Inoperable auxiliary feed pumps due to blocked ventilation flow path (Section 08.3)
NCV Three examples of missed surveillance tests (Section M8)