ENS 51747: Difference between revisions
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| event date = 02/20/2016 03:30 EST | | event date = 02/20/2016 03:30 EST | ||
| last update date = 02/20/2016 | | last update date = 02/20/2016 | ||
| title = Degraded Condition Discovered | | title = Degraded Condition Discovered on Pressurizer Safety Relief Valve Weld | ||
| event text = During the CCNPP [Calvert Cliff Nuclear Power Plant] Unit 1 Refueling, [an ultrasonic test] examination of the Unit 1 dissimilar metal weld (DMW) of the pressurizer safety relief valve RV-201 safe end weld found an indication that is approximately 80 percent though-wall, inside diameter connected axial flaw in weld #4-SR-1006-1. | | event text = During the CCNPP [Calvert Cliff Nuclear Power Plant] Unit 1 Refueling, [an ultrasonic test] examination of the Unit 1 dissimilar metal weld (DMW) of the pressurizer safety relief valve RV-201 safe end weld found an indication that is approximately 80 percent though-wall, inside diameter connected axial flaw in weld #4-SR-1006-1. | ||
This is an ASME Class 1 component and Unit 1 has entered the requirements of Technical Requirements Manual (TRM) 15.4.3.A. | This is an ASME Class 1 component and Unit 1 has entered the requirements of Technical Requirements Manual (TRM) 15.4.3.A. | ||
Latest revision as of 20:45, 1 March 2018
| Where | |
|---|---|
Calvert Cliffs  Maryland (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded | |
| LER: | 05000317/LER-2016-002 |
| Time - Person (Reporting Time:+0.7 h0.0292 days <br />0.00417 weeks <br />9.5886e-4 months <br />) | |
| Opened: | Ervin Lyson 09:12 Feb 20, 2016 |
| NRC Officer: | Howie Crouch |
| Last Updated: | Feb 20, 2016 |
| 51747 - NRC Website
| |