05000254/FIN-2018010-02
From kanterella
Jump to navigation
Jump to search
Finding | |
---|---|
Title | Minor Violation |
Description | In 2009, due to a control room envelope differential pressure test failure at another nuclear station, the licensee completed an engineering change to develop separate correction factors (uncertainty) for different test methods. The engineering change recommended procedure QCOS 575016, Control Room Envelope DP [Differential Pressure] Surveillance, be revised to perform additional testing using alternate test methods with reduced correction factors. However, the procedure was not revised. In January 2016, during the control room envelope differential pressure test, seven areas failed the acceptance criteria. The licensee utilized the engineering change and performed a temporary procedure change to use a different method with a reduced correction factor for testing. The test was successfully performed and acceptance criteria were met. After the test, the procedure reverted to the old method. A condition report was written regarding this issue and actions were assigned to perform repair of the control room boundary and determine if a more accurate instrument is needed. Although repairs were made to the control room boundary, the licensee has not yet determined if a more accurate instrument is needed. Also, the procedure was not revised to use the alternate methods. The inspectors determined this is a minor violation of 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures and Drawings for not having procedure appropriate to the circumstances. Screening: The inspectors determined this issue is not more than minor because the existing procedure is not incorrect but missing the steps the licensee could take when unsatisfactory results are obtained. Violation: This failure to comply with 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures and Drawings, constitutes a minor violation that is not subject to enforcement action in accordance with the NRCs Enforcement Policy. |
Site: | Quad Cities |
---|---|
Report | IR 05000254/2018010 Section 4OA2 |
Date counted | Sep 30, 2018 (2018Q3) |
Type: | Violation: Severity level Minor |
cornerstone | No Cornerstone |
Identified by: | NRC identified |
Inspection Procedure: | IP 71152 |
Inspectors (proximate) | R Ng K Carrington J Neurauter V Petrella C Mathews K Stoedter |
Violation of: | 10 CFR 50 Appendix B 10 CFR 50 Appendix B Criterion V |
INPO aspect | |
' | |
Finding - Quad Cities - IR 05000254/2018010 | |||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Quad Cities) @ 2018Q3
| |||||||||||||||||||||||||||||||||||||||||||||