05000250/FIN-2012002-03
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Finding | |
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| Title | Licensee-Identified Violation |
| Description | The following violation of very low safety significance (Green) was identified by the licensee and is a violation of NRC requirements which meets the criteria of the NRC Enforcement Policy for disposition as an NCV. 10 CFR Part 50, Appendix B, Criterion III, Design Control, requires, in part, that design changes, including field changes, shall be subject to design control measures commensurate with those applied to the original design and be approved by the organization that performed the original design unless the applicant designates another responsible organization. FPL implements this requirement, in part, with procedure ENG-QI 1.7, Quality Instruction Design Input/Verification, which states engineering methods employed shall ensure that design inputs are correctly translated into new designs and design changes, and that design verification activities are correctly performed. Contrary to the above, engineering methods employed did not ensure that design inputs were correctly translated into the A auxiliary feedwater pump design change nor were design verification activities correctly performed on engineering design change package PCM 2005-029. As a result, on February 3, 2012, during a design review while developing a modification package for the A auxiliary feedwater pump, FPL identified a design calculation error in the 2005 modification package for the A auxiliary feed water pump. The pump modification raised the pump power requirements. The revised design horsepower output specified for the turbine accounted for the increased pump power demand, but failed to account for recirculation flow, turbine lube oil coolers flow, and instrument uncertainties. When identified by FPL, a prompt operability determination was completed. FPL determined that although there was a reduction in margin, the required auxiliary feed water turbine horsepower remained bounded by vendors design limits. This issue was entered into the corrective action program as AR 1731117. The finding was screened as having very low safety significance (Green) using NRC Inspection Manual Chapter 0609 SDP Phase 1 screening because the finding did not result in an inoperable auxiliary feedwater pump, did not affect functionality of the system, and the design basis continued to be met. |
| Site: | Turkey Point  |
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| Report | IR 05000250/2012002 Section 4OA7 |
| Date counted | Mar 31, 2012 (2012Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | G Kuzo J Laughlin M Barillas D Mas-Penaranda D Rich N Griffis M Coursey C Fletcher J Stewart N Childs M Donithan |
| INPO aspect | |
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Finding - Turkey Point - IR 05000250/2012002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Turkey Point) @ 2012Q1
Self-Identified List (Turkey Point)
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