July-August 2019 NPJ
46 NuclearPlantJournal.com Nuclear Plant Journal, July-August 2019 Upgrade of... ( Continued from page 45) upon the consequence of failure, the FMEA identified key quality attributes and required mitigating actions. Safety planning was important to the success of this project. Hazard analysis identified risks that were addressed first with engineered safeguards and PPE as a last resort. As discussed herein, confined spaces, abrasive blasting, control of foreign materials, access to difficult locations, and many more challenges were identified and resolved with the highest regard for safety. Quality Planning relied heavily on the FMEA results. As discussed herein, the Quality Plan was the baseline document for the preparation of procedures used in the field, Quality Control (QC) inspections, and qualification of staff and field technicians. The Project team overcame system configuration and equipment challenges. Parts of the SW System piping that were planned to be upgraded had features that were common to Unit 1 and Unit 2. A design change to the SW System had to be prepared to allow for a cross-tie configuration to be installed to ensure SW feeds to critical equipment in Unit 2 were maintained prior to work beginning during the Unit 1 outage. Technical training of Structural Leadership, SGH3rd PartyQC inspectors, SGH Design Engineers, Dominion Energy Engineering Representatives, and involvement of the Authorized Nuclear inspector (ANI) were FOAK initiatives. Productivity/Efficiency Improvement The V-Wrap™ CFRP System solution at Surry results in productivity and efficiency increases based upon multiple factors, which include: Redirection of resources from Work Management, Planning, Engineering, Support Services, Operations, and Maintenance organizations engaged in the continuing predictive and preventative maintenance support (e.g., weld repairs) that have been required to maintain the operability of these S-R systems. CFRP systemupgrades accomplished using a targeted and phased approach which is planned between the Spring 2018 and Fall 2025. As a Learning Organization, Dominion Energy will be able to implement Lessons Learned and Operating Experience (OE), improving the Project Team’s performance and efficiency in each phase. Use of a phased approach has been consistently demonstrated to safely reduce costs in each phase. Use of a phased approach, in which engineering assessments targeted upgrades to fit within existing outage schedule windows, eliminated the need to extend an RFO to accommodate more invasive or large-scale traditional approaches, such as pipeline replacement. Performed a complete mock-up, in a Non-S-R application, using the same installation procedures, QC inspections, and related documentation required for a S-R application. SPECIAL ADVERTISING SECTION
Made with FlippingBook
RkJQdWJsaXNoZXIy NDM0NA==