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Bechtel Builds New Reactors at Georgia Power’s Vogtle Plant By Irwin Rapoport CEG CORRESPONDENT
Bechtel and its subcontractors are putting in a herculean effort to complete the new nuclear reactors, Units 3 and 4, located at Georgia Power’s Alvin W. Vogtle Electric Generating Plant in Waynesboro, Ga. These new reactors are the first to be constructed in the United States in the past 32 years. Unit 3, 99 percent complete, becomes operational in the third quarter of this year and Unit 4, 95 percent complete, in the second quarter of 2023. “We knew building the first new nuclear units in the U.S. in more than 30 years would be challenging, but the project has endured extraordinary circumstances during construction, including the pandemic as the most recent,” said Jeff Wilson, Georgia Power spokesman. “Through it all, the project has endured and overcome multiple challenges. Vogtle 3 and 4 remains a critical investment for this state and, once the
new units are online, they will provide low-cost, reliable and emissions-free electricity for the state of Georgia for at least 60 to 80 years.” As the largest construction project in the state, Georgia Power’s Vogtle project employs more than 7,000 workers and will lead to 800 permanent new jobs upon completion. The construction crews are using many cranes, excavators, dozers, loaders and other standard pieces of equipment. “The project has continued to face significant challenges to performance, particularly in the areas of construction remediation work, work package closure, system turnovers and subcontracted scopes of work, all of which have been exacerbated by the impacts of the COVID-19 pandemic onsite,” stated the Vogtle Construction Monitoring Report. “The project team continues to prioritize safety and quality over schedule. With these key tenets in mind, the project team is working
closely with Bechtel and other subcontractors to remove barriers to production, where possible, and to support their efforts to increase production in a safe and quality manner. The project team also continues to monitor the impacts of the COVID-19 pandemic and potential risks to the health and safety of workers onsite and in the community, as well as the progress necessary to meet the project’s projected in-service dates.” The report estimated that productivity impacts due COVID-19 “consumed approximately three to four months
As the largest construction project in the state, Georgia Power’s Vogtle project employs more than 7,000 workers and will lead to 800 permanent new jobs upon completion.
The project has continued to face significant challenges to performance, particularly in the areas of construction remediation work, work package closure, system turnovers and subcontracted scopes of work, all of which have been exacerbated by the impacts of the COVID-19 pandemic onsite.
of schedule margin previously embedded in the site work plans for both units, with an estimated cost of $160 to 200 million.” Georgia Power’s share of the total project capital cost forecast is $9.5 billion. As of Feb. 7, the total project was approximately 95 percent complete. “The major remaining scopes of work are finishing direct construction, subcontractor construction and completing the ITP/start-up testing,” stated the report. “Direct construction is approximately 93 percent complete, which represents approximately 65 percent of the total construction scope. The remaining 35 percent of construction scope includes subcontracted scopes of work, which are approximately 95 percent complete as of July 2021. The ITP/start-up testing scope is approximately 55 percent complete and will continue to progress as construction completes and turns over components and systems to the ITP team.” see REACTOR page 4
Page 2 • March 23, 2022 • www.constructionequipmentguide.com • Georgia State Supplement • Construction Equipment Guide
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Construction Equipment Guide • Georgia State Supplement • www.constructionequipmentguide.com • March 23, 2022 • Page 3
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Cranes, Excavators, Dozers On Site of Reactor Construction
Unit 3, 99 percent complete, becomes operational in the third quarter of this year and Unit 4, 95 percent complete, in the second quarter of 2023. REACTOR from page 1
Engineering and design for nuclear reactors is part-in-parcel of the initiative and everything had to be perfect thought out before construction could begin. And even when work began, changes and design upgrades were a given. “The overall engineering organization continued to support construction, ITP, and start-up progress” stated the report. “The construction engineering organization (CEO) continued to support construction by ensuring all engineering documentation was completed and ready for system turnover, while the start-up engineering organization focused on processes and programs to support fuel load and plant operation. The ITP design engineering team focused on resolving issues that arise during component and system testing. The overall goal of the organization is to resolve issues to minimize impact. The CEO continued its involvement in the ASME Nuclear Component Stamp (N-Stamp) approval process and work package closure,” it added. “The NRC utilizes the NStamp to ensure safety-related piping systems, pumps, and other equipment meet the quality requirements set forth under the ASME Boiler and Pressure Vessel Code.” Project’s Progression Crews are making progress on several fronts. For the Unit
3 Nuclear Island, where major steps were achieved toward its completion of and in support of the fuel load milestone. This facility is comprised of the auxiliary building, containment vessel and shield building. “The project is committed to completing the remaining work scope in support of the final regulatory requirements prior to loading of fuel,” states the report. “Unit 3 achieved the most notable testing milestone to date with the completion of HFT, which successfully demonstrated the plant’s ability to operate at NOT and NOP. The final stages of electrical and I&C work remain to support Unit 3 fuel load. Between the walls of the shield building and the containment vessel, the installation of air baffles has commenced. The air baffles are one of the final mechanical components to be installed and are part of the passive containment cooling systems. “Construction is focused on area completion and turnover to site operations, ” it added. “Activities to support area completion include coatings, HVAC finalization, specialty door installation and various other architectural finishing activities. During the reporting period, a leak was discovered in the floor of the spent fuel pool (“SFP”). After thorough testing and analysis, SNC decided to replace the floor of the SFP. Installation of the new floor panels is progressing, and while currently on critical path, the risk to Unit 3’s schedule
for this issue has decreased.” The key benchmarks were the completion of the CB20 civil work and air handling systems in support of air balancing and HFT, commissioning of four divisions of the PMS, running the RCPs under standard operating conditions and the turnover of the cask crane to ITP. ‘During the next reporting period, work inside containment and the auxiliary building will support post-HFT activities and will conclude as Unit 3 performs final preparations for loading fuel,” stated the report. “Subcontracted scopes remained in focus during the period as they supported successful completion of HFT and specific focus on final scopes of work to support fuel load, including electrical penetration seals, coatings, insulation and fireproofing throughout the Nuclear Island.” The Unit 3 Turbine Building conducted a successful Turbine Roll as part of HFT. “The primary focus in the coming months is finalizing all critical activities required to support the fuel load milestone, including the demobilization of scaffolding and the turnover of rooms and areas to site operations” states the report. “Electrical work remains a key focus area in support of the final system turnovers to support fuel load.” Additional accomplishments included the completion of see REACTOR page 6
Construction Equipment Guide • Georgia State Supplement • www.constructionequipmentguide.com • March 23, 2022 • Page 5
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Bechtel Crews Make Good Progress Toward Completion REACTOR from page 4 placements at elevations of 165 and 180 ft.; and the ener- installation of mechanical equipment, electrical equipment, cables, piping, and terminations to support upcoming milethe overspeed turbine trip test during HFT and the gravity gization of several critical systems for the first time. Work on the Unit 4 Turbine Island is moving quickly, with stones. Key accomplishments were the placement of conand roof drain collection system. Regarding the Unit 3 annex building, “electrical craft con- electrical bulk commodity installation progressing in support crete slab at an elevation of 173.7 ft., the installation of bulk cable pulls to support upcoming testing milestones, and settinue their support of system turnovers by installing raceway, of the IE milestone. “Mechanical work remained a primary focus,, including ting air handling unit VXS-MS-07A at an elevation of 135 ft. pulling and terminating cables, installing permanent lighting and installing communication devices throughout the build- the installation of piping supports for multiple systems in Area 3. Work also is ongoing in the balance of the plant (BOP) ing,”states the report. “Efforts to complete the nonradioac- throughout the Turbine Island,” stated the report, which tive ventilation system (“VBS”), health physics and hot noted that the bus Duct and cable bus installation to support areas, where the focus has been on preparation for turnover to site operations, including site security work, final paving machine shop HVAC system (“VHS”) and annex/aux build- IE were completed. Construction of the Unit 4 annex building continued with and grading and demobilization of temporary structures and ing nonradioactive ventilation system (“VXS”) are in the the placement of concrete for walls and floors, as well as support systems. final phases.” “The placement of the Unit 4 The installation of mechanical spent fuel crane was the final lift for equipment and instrumentation the large Lampson crane before it supported the turnover of the folwas demobilized,” stated the report. lowing systems: Containment “In preparation for Unit 3 site operFiltration System (“VFS”); ations, Bechtel and SNC together Central Chilled Water System executed coordinated work related (“VWS”); and VXS. to the SNC-managed security sub“Construction of the annex contract scope, which included the building final room layouts coninstallation of security fencing tinues with the installation of between Units, personnel and vehigypsum board, tile, permanent cle access points, and multiple bullighting, electrical, and architeclet resistant enclosures (BRE). tural finishes,” states the report, “Upon completion of the Unit 4 “Turnover of jurisdictional conCB20 setting, the area utilized for trol of rooms from construction structure assembly was repurposed to site operations has comfor the demobilization of the menced in support of area Lampson crane and Unit 4 support turnovers.” structures,” it added, “allowing for Key accomplishments work on security structures and include: mechanical completion support systems including additionof the Unit 3 annex building and al portions of the vehicle barrier installation of the architectural system. Work will continue with finishes (walls, doors, tile, and completing the Unit 3 security acoustical ceilings). requirements and final site prepara“Several areas are now in use by SNC operations and TCC Georgia Power’s Alvin W. Vogtle Electric Generating Plant in Waynesboro, Ga., will become the largest tions in support of fuel\load later this year.” CEG support personnel,” states the nuclear power station in the United States when Bechtel completes construction of Units 3 and 4. report. For the Unit 4 Nuclear Island, “Construction focused on mechanical and electrical bulk commodity installation in support of the systems necessary for IF and IE milestones” states the report. “Additionally, significant civil and structural work continued on the Unit 4 Nuclear Island. Externally, progress included the topping out of Unit 4 with the setting of and concrete placements for CB20. Work continues in support of the ongoing CB20 concrete placements. Internally, work on the Reactor Vessel Internals (“RVI”) continued, which was sequenced using lessons learned from Unit 3. The plan to allow Unit 4 subcontractors to progress ahead of Unit 3 sequence has allowed them to make substantial progress due to lower craft density and has the potential to substantially reduce the number of work fronts which are congested during bulk electrical work. “The HVAC, coatings, insulation and fire protection/detection subcontractors are substantially ahead with their progress on Unit 4 as compared to the same point on Unit 3,” it added. “Following the discovery of a leak in the Unit 3 SFP, SNC proactively inspected the Unit 4 SFP for similar issues and determined that they did not exist on Unit 4.” Crews have commenced with the flushing of systems for IF; completion of portions of the plant control system, piping to support secondary hydro, and the civil wall and roof These new reactors are the first to be constructed in the United States in the last 32 years.
Construction Equipment Guide • Georgia State Supplement • www.constructionequipmentguide.com • March 23, 2022 • Page 7
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