Power Uprate Lessons Learned Point Beach Nuclear Plant 2011 Units 1 & 2

1. Power Uprate Lessons LearnedPoint Beach Nuclear Plant2011 Units 1 & 2 Kelly Oetting BOP System Engineer FSRUG 2012 Conference January 23-26, 2012

2. Power Uprate Lessons Learned Power Uprate Scope • Westinghouse 2 – Loop PWR, Unit 1 1970, Unit 2 1972 • 545 MWe to 637 MWe • 1540 MWth to 1800 MWth • 17% • Approximately 35 Major Modifications for Each Unit • Dozens of Smaller Supporting Modifications

3. Power Uprate Lessons Learned Unit 2 Diagram

4. Power Uprate Lessons Learned Unit 1 Diagram

5. Power Uprate Lessons Learned Duration • Unit 2 – 120 Days (3/1/11 - 6/19/11) • Unit 2 – Power Ascension Testing 12 Days (6/19/11 – 7/1/11) • Unit 1 – 75 Days (10/3/11 – 12/17/11) • Unit 1 – Power Ascension Testing 12 Days ( 12/17/11 - 12/29/11) • The Difference…..Mostly Lessons Learned!

6. Power Uprate Lessons Learned Lessons Learned Major Categories • Preparation • Resources • Foreign Material Exclusion (FME) Control / Chemistry Control • Testing • Configuration Control • Technical Conscience • Component Specific Lessons Learned

7. Power Uprate Lessons Learned Preparation • Design Packages – Are They ready? Design Final? • Work Packages Planned? • Parts On-Site/Available? • Spare Parts On-Site/Available? • Testing Packages Complete/Ready? • Test Equipment Identified/On-site/Available? • Pre-Outage Work Complete? (scaffolding, insulation, rigging, etc..) • Is Your License Amendment Approved?

8. Power Uprate Lessons Learned Resources • Contractors – Majority of Work – Remember…They Eventually Leave • Early DEDICATED in-house resources for design reviews and approvals • Need dedicated in-house resources from Engineering, Operations, Maintenance, Procedure Writers, Document Control, Drafting • Procedure reviews – Who’s doing it? Need knowledgeable people – HUGE resource drain (50% of system engineer’s time during outages) • Don’t forget in-house participation in testing, especially I&C • Who will do the equipment database and vendor manual updates? • Resources Spare Parts Management, out with the old – in with the new • Resources PM updates • Routine System Engineering Duties May Have To Wait

9. Power Uprate Lessons Learned Foreign Material Exclusion (FME) Control / Chemistry Control • Na, F and Fe values above CEI limit for 25 days (U2) 10 days (U1) • GMAW weld rod, sodium silicate binding agent • Management Buy-In for Clean-Up Plans • Specific Acceptance Criteria (quantitative not qualitative) • Better physical barriers (covers, tape) • Watch out for weld blanket (fraying and dye) • Remove anti-rust coatings prior to installation • TIG for root pass • Smoke exhaust ventilation • Flushing (high pressure wash & high volume wash) • Grinding wheels – fibers plugged start-up strainers • Start-up strainer design (mesh size? Back flush capability?) • Consider a start-up polisher (trailer)

10. Power Uprate Lessons Learned Testing • Get Involved Early • Get the Right People Involved (In-House and Outside Expertise) • Predicted Values May Not Match Actual – Have A Plan To Evaluate • How Will As–Left Setting Be Documented? • SQA Program? • Software Setup and Tuning Parameters Specified in Design? • Factory Acceptance Testing Specified in Design? • Bench Cal and Test Prior to Installation – huge time savings between U2 to U1 • Equipment Tagging Complete PRIOR to Testing • Finish ALL of the Start-Up Testing • Don’t remove test instrumentation early • FWH level optimization (knee test)

11. Power Uprate Lessons Learned Configuration Control • NAMS/PASSPORT Software not the most user friendly • CRNs – Changes to original design package – cross reference not enough • Revise original design package to show final configuration if possible • Detailed titles and descriptions for CRNs • Make sure CRNs for 1st Unit incorporated on the 2nd Unit

12. Power Uprate Lessons Learned Technical Conscience • Summit Fever! • Accountants vs. Engineers • Schedule Impact vs. Long Term Reliability • Flushing (strainers, duration, chemistry requirements) • Accepting Poor Workmanship (condenser wall) • Spend a Little More for Increased Reliability (ES Exp Jnts)

13. Power Uprate Lessons Learned Component Specific Lessons Learned • Ensure Vendors Actually Meet The Agreed Upon Specifications • Pumps; 30+ runs at manufacturer before pump acceptable (vibs, curve shape, alignment) • Pump thermal growth nowhere close to calculated, measure it. (Essinger Bars, Rotalign, etc..) • Pump nozzle loads required significant piping rework (vendor couldn’t accept piping designer’s higher values) • Pump oil leaks due to thrust disc drive nut – wrench flats machined in wrong location • Supplied Pump/Motor coupling keys too large, didn’t match half keys used for component balancing • New Motors: Rotors made in China, failed on the test stand, rework; 5 new rotors had to be manufactured, shop in China never made 3600 rpm motors before

14. Power Uprate Lessons Learned Component Specific Lessons Learned(cont.) • Rewound motors: lower starting amps and torque, longer acceleration time caused rework for calculations and over current relay settings • Valves – trim not sized correctly, valves full open at 100% pwr • Skid mounted piping welds not per code or lacked vendor provided evaluation and poor quality • Skid mounted components not rated for ambient conditions • Skid mounted dp instruments piped backwards • Small bore piping cracked socket weld, use 2:1 weld leg configuration • Painters will paint everything, even moving parts • Vendor manuals and drawings not updated timely • Controller power supply failures caused mid outage design change for feed reg valve • Swapping from backup to primary feed reg valve controller, need to wait 15 seconds and follow specific sequence or valve will go full shut – software glitch

15. Power Uprate Lessons Learned Component Design Change Details

16. Power Uprate Lessons Learned Component Design Change Details(cont.)

17. Power Uprate Lessons Learned Component Design Change Details(cont.)

18. Power Uprate Lessons Learned Component Design Change Details(cont.)

19. Power Uprate Lessons Learned Component Design Change Details(cont.)

20. Power Uprate Lessons Learned Component Design Change Details(cont.)