ML071350109
| ML071350109 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 05/02/2007 |
| From: | SCANA Corp, South Carolina Electric & Gas Co |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| Download: ML071350109 (8) | |
Text
- Benchmark Dose Rate 9.1 mrem/hr
- Outage Exposure Goal 65 Rem
- TLD corrected to 56.129 Rem
- 11.880 Rem Emergent Work
- Best Dose performance ever at VCS!
Summary of HP Performance during RF16
CRDM Leak Repair and Cleanup Activities 6.112 Rem Significant Emergent Dose Activities for RF16 RV Head Permanent Shield/Shroud/Insulation Removal/Replacement 4.551 Rem
Reactor Building Sump Mod Challenges (4.369 Rem)
- Space
- Hexavalent Chrome (CrVI)
- Welding Resource
- Dose Rate vs. man-hrs Significant Dose Activities for RF16
Volumetric Head Inspection Challenges (3.830 Rem)
- LHRA Controls
- Contamination Controls
- Location in RB
- High dose rates (1.5 to 7.0 R/hr)
Significant Dose Activities for RF16
Damaged Fuel Assembly (RP Response)
- Underwater Surveys
- Captured high activity metal fragment (>1000 R/hr) prior to drain down
- Close scrutiny on no mode valve work (1st off RCS valves)
- Increased Hot Particle sweeps
- Discontinued use of RM-24 Radon instrument (alpha discrimination)
ALARA Remote Camera Monitoring and Telemetric Dosimetry Robotic bare metal video inspection RV Head HydraNut Closure Mod
Radwaste Transportation WHITE Finding in 1st qtr 2006 61 Shipments were made during RF16 with no issues95-001 Follow up inspection closed out finding post outage
Closing Remarks Jeff Archie Vice President, Nuclear Operations