05000440/FIN-2014002-03
From kanterella
Jump to navigation
Jump to search
Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | Title 10 of the Code of Federal Regulations, Part 50.55a(b) states, in part, that systems and components of boiling and pressurized water cooled nuclear power reactors must meet the requirements of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code,Section III, Division 1. The ASME Code 1979 Edition, Winter Addenda of Section III, ND-7311(b), states that the total rated relieving capacity shall be sufficient to prevent a rise in pressure of more than 10 percent above the Design Pressure of any component within the pressure retaining boundary of the protected system under any system upset conditions. Contrary to the above, the licensee identified in 2002 that it had failed to provide over-pressurization protection for the affected portions of the emergency service water (ESW) system rated at 140 pounds per square inch gauge after upgrading the Division 1 (1998) and 2 ESW (1990) system pumps impellers to support an increase in licensed reactor power. The licensee generated CR 2-00704 to address the issue. The finding was determined to be more than minor in accordance with IMC 0612, Power Reactor Inspection Reports, Appendix B, Issue Screening, dated September 7, 2012, because the finding was associated with the Mitigating Systems cornerstone attribute of Design Control and adversely affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences (i.e., core damage). Additionally, if left uncorrected, the performance deficiency would become a more significant safety concern. The finding was evaluated using IMC 0609, Significance Determination Process (SDP), Attachment 0609.4, Initial Characterization of Findings, dated June 19, 2012. Exhibit 2 of Appendix A, the Mitigating Systems Screening Questions, Section A.1, Mitigating SSCs and Functionality, was checked as yes because the finding is a deficiency affecting design or qualification. As a result the finding screens as very low safety significance (Green). |
| Site: | Perry  |
|---|---|
| Report | IR 05000440/2014002 Section 4OA7 |
| Date counted | Mar 31, 2014 (2014Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | J Nance M Kunowski M Marshfield T Bilik |
| Violation of: | 10 CFR 50.55a |
| INPO aspect | |
| ' | |
Finding - Perry - IR 05000440/2014002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Perry) @ 2014Q1
Self-Identified List (Perry)
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||