July-August 2019 NPJ

Nuclear Plant Journal, July-August 2019 NuclearPlantJournal.com 47  Early contractor involvement utilizing an Investigate-Design- Build (I-D-B), turn-key approach and the specialized expertise of engineering and contractor partners reduced Dominion Energy's internal resource requirements.  Requiring engineering and contractor partners to have and use a 10CFR50, Appendix B/ASME NQA-1 QAP reduced the use of Dominion Energy’s internal resources.  An “In-Process Inspection and Rework Team” was used to identify and correct installation anomalies quickly and efficiently. This approach allowed for qualified Installation Technicians to implement timely in-process corrective actions after the Inspection Team (Structural Leadership, SGH 3rd Party QC Inspectors, and Dominion Energy Representatives) performed inspections.  Details for typical, in-process rework, necessary to remediate installation imperfections, were developed as part of the design process.  Technical Training was provided by the V-Wrap™ CFRP System manu- facturer (Structural Technologies) for the 3rd Party QC Inspectors (SGH) and Engineers (Dominion Energy and SGH) that allowed for a complete understanding of the key installation attributes.  Dominion Energy contracted a full- time Authorized Nuclear Inspector (ANI) to provide oversight of the installation activities, to perform in- spections, and to validate S-R docu- mentation, which facilitated expedi- tious completion of documentation packages. This technology is applicable at other nuclear stations, and the alternative material request approved by the NRC for Surry provides a roadmap to address S-R piping using a CFRP System upgrade to avoid excavation in challenging access areas. It is anticipated that this methodology could deliver similar savings across the US fleet of nuclear stations. Personnel Safety No personnel OSHA Lost Time or Recordable safety incidents were experienced in completing Phase 1 of this FOAK CFRP System installation during the Spring 2018 RFO. This exceptional safety performance is attributed to the team’s rigorous focus on safety, the number one priority established during all stages of the project. Personnel access into the buried piping to install the CFRP system on piping, elbows, manways, and pipe penetrations was limited, and all installation tasks were performed in a confined space environment. Other safety challenges included chemical and material management, abrasive blasting (high-energy controls, protection of S-R valves, and configuration control), foreign material controls, management of blast media and waste, fall protection, access platforms, and scaffolding. Dedicated, full-time safety professionals were assigned to assist the Project Team in developing hazard assessments, safety plans, and oversight of field installation tasks. (Continued on page 48)