05000275/FIN-2009005-06
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | Title 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures and Drawings, states, in part, that activities affecting quality shall be prescribed by documented procedures and shall be accomplished in accordance with those procedures. On August 12, 2009, plant operations management failed to implement Section 5.4.5 of safety-related Procedure OP1.ID3, Reactivity Management Program. The procedure states information provided by reactor engineering such as rod movement recommendations, reactivity management plans, ramp plans, and reactivity briefing sheets shall be provided to the control room via an operations shift order. Contrary to this, an unapproved Reactor Engineering Ramp Plan was utilized by control room staff for approximately two hours during a downpower and subsequent shutdown of Unit 2 reactor for emergent transformer repairs. The unapproved Reactor Engineering Ramp Plan was a draft copy utilized for the operations crew just-in-time simulator training for the shutdown, and was subsequently used in the control room by mistake. The approved Reactor Engineering Ramp Plan was available in the control room at the start of the ramp; however, it was not initially utilized. Upon discovery of the unapproved plan by the control room staff, the approved (correct) plan was then used for the remainder of the shutdown. Pacific Gas and Electric entered the issue into their corrective action program as Notification 50262580. The finding is of very low safety significance because no reactivity manipulations outside of the approved plan had been made prior to discovery by the control room staff |
| Site: | Diablo Canyon  |
|---|---|
| Report | IR 05000275/2009005 Section 4OA7 |
| Date counted | Dec 31, 2009 (2009Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | G Guerra M Brown M Peck G George G Miller S Makor D Graves N Greene |
| INPO aspect | |
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Finding - Diablo Canyon - IR 05000275/2009005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Diablo Canyon) @ 2009Q4
Self-Identified List (Diablo Canyon)
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