05000306/FIN-2008005-06
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Finding | |
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| Title | Abnormal Operating Procedure Entry Conditions |
| Description | On November 6, 2008, I&C technicians were calibrating power range nuclear instruments using SP 2318.3, Nuclear Instrumentation System Power Range Channel Calibration. As discussed in the Section above, the I&C technicians failed to ensure that the rod control system was placed in manual prior to inserting a test signal into the instrument being calibrated. Immediately after the signal was inserted, the Unit 2 control rods began inserting into the core. After validating that all other plant parameters were normal, the Unit 2 control room operators placed the rod control system in manual to stop the control rod movement. The following day, the inspectors reviewed Abnormal Operating Procedure 1C5 AOP 2. The inspectors found that several of the symptoms listed in the AOP were experienced during the unexpected control rod movement on November 6, 2008. Specifically, control room personnel experienced the following symptoms: • Insertion of rods as shown by the step counters and/or rod position indicators; • Decreasing nuclear instrumentation readings; • Decreasing reactor coolant system average temperature; and • Decreasing pressurizer pressure. The inspectors questioned operations personnel to determine why 1C5 AOP 2 was not entered on November 6, 2008. The inspectors were informed that the AOP was not entered because the control room operators knew the cause of the rod movement (that is, that the rod movement was caused by the technicians error). The inspectors asked for a copy of any licensee procedure that allowed AOPs not to be entered if the cause of the entry condition was known. No procedures were provided to the inspectors. The inspectors also had discussions with the licensees operations training staff regarding how the licensed operators were trained to respond to AOP entry conditions and symptoms. The inspectors were provided with several training scenarios for review. Based upon the information found in the training scenarios, the inspectors determined that the current training methods fostered a philosophy that AOPs were not required to be entered if the cause of the entry condition/symptom was known. This concerned the inspectors as it seemed to allow operations personnel to transition into a knowledge based operating philosophy rather than a process based operating philosophy. At the conclusion of the inspection period, the licensee was contacting Westinghouse and other licensees to determine whether the practices employed by the Prairie Island Operations staff were outside of industry norms. As a result, this issue is considered unresolved pending the receipt and review of the industry information from the licensee (URI 05000282/2008005-06; 05000306/2008005-06 |
| Site: | Prairie Island  |
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| Report | IR 05000306/2008005 Section 1R22 |
| Date counted | Dec 31, 2008 (2008Q4) |
| Type: | URI: |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.22 |
| Inspectors (proximate) | D Mcneil G O'Dwyer J Giessner K Stoedter L Haeg P Zurawski R Jickling R Winter T Bilikd Betancourtj Giessner K Stoedter N Feliz P Zurawski |
| INPO aspect | |
| Finding closed by | |
| IR 05000282/2009002 (14 May 2009) | |
| ' | |
Finding - Prairie Island - IR 05000306/2008005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Prairie Island) @ 2008Q4
Self-Identified List (Prairie Island)
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