ML062760245: Difference between revisions
StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
||
Line 15: | Line 15: | ||
=Text= | =Text= | ||
{{#Wiki_filter:V. C. Summer Nuclear | {{#Wiki_filter:V. C. Summer Nuclear Station RF-16 Outage Information Alan Torres Manager, Planning and Scheduling Enclosure | ||
*Be smart-use OE (Book) | |||
RF-16 Goals*Duration: 37 Days*Budget projected at 25.7 m*Human Performance Events: | RF-16 Goals | ||
* Outage goals | |||
- Nuclear safety | |||
*Post 100% -90 Day Capacity: *Dose: 70 REM RF-16 Major Modifications*New Alternate AC supply to 1DX-Reduction in CDF of 31.8%*Reactor Building Sump Redesign-Change out of SI Throttle valves-Addition of debris catchers*Replacement of RV head nuts with Hydranuts-Significant | * Protect the core and the public (conservative decisions) | ||
*Weekly outage newsletter*Rewarded behaviors program utilizes human performance error reduction tools *Outage observation blitz RF-16*Challenges-RCS | * Use N+1 (Safety Function Bar Chart) | ||
V.C. Summer Station Recirculation Sump Design | * Secondary side focus (use of secondary side outage manager) | ||
* | * Readiness reviews using Equipment Risk | ||
RF-16 Goals | |||
- Radiological safety | |||
* ALARA (use one train of RHR for shutdown) | |||
* Dose control-use PRC resin | |||
* Control Crud Burst (24hr RCP run after peroxide injection) | |||
- Industrial safety | |||
* Two minute drill | |||
* Pre-job briefs | |||
* Be smart- use OE (Book) | |||
RF-16 Goals | |||
* Duration: 37 Days | |||
* Budget projected at 25.7 m | |||
* Human Performance Events: < 1 | |||
* Recordable Injuries: < 1 | |||
* Significant Safety Events: 0 | |||
* Post 100% - 90 Day Capacity: | |||
* Dose: 70 REM | |||
RF-16 Major Modifications | |||
* New Alternate AC supply to 1DX | |||
- Reduction in CDF of 31.8% | |||
* Reactor Building Sump Redesign | |||
- Change out of SI Throttle valves | |||
- Addition of debris catchers | |||
* Replacement of RV head nuts with Hydranuts | |||
- Significant Dose savings | |||
* Replacement of B DG Governor | |||
- Improved reliability | |||
RF-16 RB Sump | |||
RF-16 New Sump Design | |||
RF-16 Hydra Nuts | |||
RF-16 Items of Interest | |||
* Reactor lower head visual inspection | |||
* Upper head volumetric inspection | |||
* B Hot leg volumetric inspection | |||
* Containment tendon inspection | |||
* LP A inspection and overhaul | |||
* LP A condenser bellows replacement | |||
RF-16 Expansion Bellows | |||
RF-16 Reactor Head Volumetric Exam | |||
RF-16 Items of Interest | |||
* Replacement of air disconnect 8903 on main out going bus | |||
* Replacement of DC feedback cards on EX2000 excitation system | |||
Program Enhancements | |||
RF-16 Program Improvements | |||
* Program Changes | |||
- Implementation of a new FME program | |||
- Use of new maintenance procedure format | |||
- Use of an integrated valve team for AOV/MOVS | |||
RF-15 Carry over | |||
* Operating Experience books | |||
* Daily talking points | |||
* Weekly outage newsletter | |||
* Rewarded behaviors program utilizes human performance error reduction tools | |||
* Outage observation blitz | |||
RF-16 | |||
* Challenges | |||
- RCS leakage identification plan | |||
- Identification and resolution of fuel leaker | |||
- Potential unknown on volumetric head inspection | |||
- SI flow balance | |||
- Alternate AC power retest | |||
Questions? | |||
V.C. Summer Station Recirculation Sump Design Changes Kirk Weir Design Engineering | |||
Overview | |||
* Analysis Results | |||
* Ongoing Analysis Work | |||
* Refuel 16 Activities | |||
Analysis Results | |||
* ~930ft2 strainer for each train | |||
* 8.2 ft3 fiber load on the sump | |||
- 1.5 ft3 tempmat | |||
- 6.7 ft3 latent fiber (105 lbs latent debris) | |||
* 190 ft2 unqualified tape, placards, stickers | |||
* Chemical Effects account for <1% | |||
total particulate | |||
* High particulate load | |||
* Marinite insulation is not a problem | |||
Analysis Results | |||
* 713.7 ft3 of RMI (mirror insulation) debris | |||
* 27.3 ft3 transports to the sump | |||
- based on RMI debris transport testing | |||
- removed the need for debris interceptors | |||
Analysis Results | |||
* Evaluation of sump level for break inside the primary shield was completed and is acceptable | |||
* Evaluation of sump level for break inside the pressurizer cubicle was completed and is acceptable. the pressurizer cubicle door latching mechanism is assumed to fail. | |||
* HHSI throttle valves will be replaced due to downstream effects | |||
- current valve opening is 1/32 | |||
- new valve opening is ~3/32 | |||
Ongoing Analysis Work | |||
* Cumulative effects program - | |||
calculations are being completed and procedure updates are prepared | |||
* Evaluation of downstream effects | |||
* Conducting large scale testing on strainers | |||
RF-16 Modifications | |||
* Complete recirculation sump strainer replacement | |||
- 2400 ft2 per train | |||
- RHR and spray pump strainers cross-tie | |||
* Trash racks | |||
* Block southern stairwell of 436 ft elevation | |||
* Remove toe-kick plate on 436 ft elevation | |||
* Installation of new HHSI throttle valves | |||
AECL Strainer Designs | |||
Review | |||
* On track to meet the requirements of the Generic Letter | |||
* Supplemental response to Generic Letter by 12/31/06 | |||
* Major modifications planned for RF16 | |||
Questions?}} |
Latest revision as of 14:35, 23 November 2019
ML062760245 | |
Person / Time | |
---|---|
Site: | Summer ![]() |
Issue date: | 09/27/2006 |
From: | Andrea Torres South Carolina Electric & Gas Co |
To: | Office of Nuclear Reactor Regulation |
References | |
Download: ML062760245 (27) | |
Text
V. C. Summer Nuclear Station RF-16 Outage Information Alan Torres Manager, Planning and Scheduling Enclosure
RF-16 Goals
- Outage goals
- Nuclear safety
- Protect the core and the public (conservative decisions)
- Use N+1 (Safety Function Bar Chart)
- Secondary side focus (use of secondary side outage manager)
- Readiness reviews using Equipment Risk
RF-16 Goals
- Radiological safety
- Dose control-use PRC resin
- Control Crud Burst (24hr RCP run after peroxide injection)
- Industrial safety
- Two minute drill
- Pre-job briefs
- Be smart- use OE (Book)
RF-16 Goals
- Duration: 37 Days
- Budget projected at 25.7 m
- Human Performance Events: < 1
- Recordable Injuries: < 1
- Significant Safety Events: 0
- Post 100% - 90 Day Capacity:
- Dose: 70 REM
RF-16 Major Modifications
- New Alternate AC supply to 1DX
- Reduction in CDF of 31.8%
- Reactor Building Sump Redesign
- Change out of SI Throttle valves
- Addition of debris catchers
- Replacement of RV head nuts with Hydranuts
- Significant Dose savings
- Replacement of B DG Governor
- Improved reliability
RF-16 New Sump Design
RF-16 Hydra Nuts
RF-16 Items of Interest
- Reactor lower head visual inspection
- Upper head volumetric inspection
- B Hot leg volumetric inspection
- Containment tendon inspection
- LP A inspection and overhaul
RF-16 Expansion Bellows
RF-16 Reactor Head Volumetric Exam
RF-16 Items of Interest
- Replacement of air disconnect 8903 on main out going bus
- Replacement of DC feedback cards on EX2000 excitation system
Program Enhancements
RF-16 Program Improvements
- Program Changes
- Implementation of a new FME program
- Use of new maintenance procedure format
- Use of an integrated valve team for AOV/MOVS
RF-15 Carry over
- Operating Experience books
- Daily talking points
- Weekly outage newsletter
- Rewarded behaviors program utilizes human performance error reduction tools
- Outage observation blitz
RF-16
- Challenges
- RCS leakage identification plan
- Identification and resolution of fuel leaker
- Potential unknown on volumetric head inspection
- SI flow balance
- Alternate AC power retest
Questions?
V.C. Summer Station Recirculation Sump Design Changes Kirk Weir Design Engineering
Overview
- Analysis Results
- Ongoing Analysis Work
- Refuel 16 Activities
Analysis Results
- ~930ft2 strainer for each train
- 8.2 ft3 fiber load on the sump
- 1.5 ft3 tempmat
- 6.7 ft3 latent fiber (105 lbs latent debris)
- 190 ft2 unqualified tape, placards, stickers
- Chemical Effects account for <1%
total particulate
- High particulate load
- Marinite insulation is not a problem
Analysis Results
- 713.7 ft3 of RMI (mirror insulation) debris
- 27.3 ft3 transports to the sump
- based on RMI debris transport testing
- removed the need for debris interceptors
Analysis Results
- Evaluation of sump level for break inside the primary shield was completed and is acceptable
- Evaluation of sump level for break inside the pressurizer cubicle was completed and is acceptable. the pressurizer cubicle door latching mechanism is assumed to fail.
- HHSI throttle valves will be replaced due to downstream effects
- current valve opening is 1/32
- new valve opening is ~3/32
Ongoing Analysis Work
- Cumulative effects program -
calculations are being completed and procedure updates are prepared
- Evaluation of downstream effects
- Conducting large scale testing on strainers
RF-16 Modifications
- Complete recirculation sump strainer replacement
- 2400 ft2 per train
- RHR and spray pump strainers cross-tie
- Trash racks
- Block southern stairwell of 436 ft elevation
- Remove toe-kick plate on 436 ft elevation
- Installation of new HHSI throttle valves
AECL Strainer Designs
Review
- On track to meet the requirements of the Generic Letter
- Supplemental response to Generic Letter by 12/31/06
- Major modifications planned for RF16
Questions?