05000446/FIN-2014005-02
From kanterella
Jump to navigation
Jump to search
Finding | |
|---|---|
| Title | Failure to Follow the Troubleshooting Activities Procedure in a Plant Transient |
| Description | The inspectors reviewed a self-revealing finding for the licensees failure to follow the troubleshooting activities procedure while working on the condensate system alarm and control circuit. The troubleshooting activities caused the condensate low pressure heater bypass valve to open resulting in a plant transient. Operators responded to the event by manually initiating a turbine runback and then stabilized the plant. The workers had conducted additional troubleshooting activities without the awareness of operations and an evaluation by engineering, which did not meet the requirements of the troubleshooting procedure. The licensee entered the finding into the corrective action program as Condition Report CR-2014-001268. The failure to follow the troubleshooting activities procedure was a performance deficiency. The performance deficiency was more than minor because was associated with the human performance attribute of the Initiating Events cornerstone and adversely affected the cornerstone objective to limit the likelihood of events that upset plant stability and challenge critical safety functions during power operations. Specifically, performing the additional troubleshooting steps without the required evaluation and notification resulted in a plant transient. Using Inspection Manual Chapter 0609, Attachment 04, Initial Characterization of Findings, and Appendix A, Exhibit 1, Initiating Events Screening Questions, the finding was determined to be of very low safety significance (Green) because the finding did not cause a reactor trip or the loss of mitigation equipment. The finding has a human performance cross-cutting aspect associated with documentation because the licensee failed to ensure that work packages were complete and thorough and that plant activities were governed by high-quality procedures [H.7]. |
| Site: | Comanche Peak  |
|---|---|
| Report | IR 05000446/2014005 Section 4OA3 |
| Date counted | Dec 31, 2014 (2014Q4) |
| Type: | Finding: Green |
| cornerstone | Initiating Events |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | B Tindell B Travis C Alldredge J Kramer L Carson N Greene N Hernandez P Hernandez R Kumana R Williams W Walker |
| CCA | H.7, Documentation |
| INPO aspect | WP.3 |
| ' | |
Finding - Comanche Peak - IR 05000446/2014005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Comanche Peak) @ 2014Q4
Self-Identified List (Comanche Peak)
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||