ML25071A214

SNC Future Projects

ML25071A214
Person / Time
Site:	Hatch, Vogtle, Farley
Issue date:	03/12/2025
From:	Southern Nuclear Operating Co
To:	Scott Wall NRC/NRR/DORL/LPL3
References
Download: ML25071A214 (1)

Text

SNC Fleet / Digital Program

2 Digital Program Purpose Strategically implement digital projects across the SNC Fleet using a standardized approach to gain efficiencies in planning, implementation, and common design elements. The fleet approach will allow best practices, expertise, and OE to be applied across the fleet as similar upgrades are performed across the fleet by the fleet digital projects team.

Fleet standardization of digital technologies allows:

• Standardized training across the fleet

• Shared resources working on similar technologies

• Familiarization and proficiency

• Consolidation of expertise support

3 Digital Program Mission Ensure that each digital project is improving SNCs ability to supply safe and reliable power. This is being done by:

• Optimizing plant operations with SPV elimination and risk removal

• Increase plant performance through automation and automatic control

• Improve equipment reliability with added monitoring and diagnostic capabilities

• Reduce O&M cost by crediting reliable diagnostics thereby reducing manual surveillances and operational risks

4 Digital Program State

• The Digital program came into existence through the digital modernization efforts that indirectly tie to license renewal. The digital modernization efforts started with a business case and a modernization implementation plan (MIP).

• The digital program at all three sites needed a strategic, integrated, and holistic approach. A deep dive into the program was performed to ensure true investment on return, risk mitigation, and program optimization.

• As part of the deep dive effort is to ensure each sites organizational needs are identified, which are balanced against the site needs and the digital strategy. To ensure the sustainability and operation of the SNC Fleet for the long term.

5 Farley Projects

• The near-term projects (<5 years) for the Farley digital program will use the 50.59 process.

• The ICCMS project will replace the existing core cooling monitoring system and Reactor Vessel Level indications with an upgraded digital system. This project is not expected to require a LAR.

• Longer-term modifications (>5 Years) for the Farley digital program do have projects that will require a LAR (RPS, etc) and will utilize the ISG-06 process.

6 Hatch Projects

• The near-term projects (<5 years) for the Hatch digital program will use the 50.59 process.

• The RPS project will replace the existing system with an upgraded digital system.

This project will require a LAR and will utilize the ISG-06 process.

• Timeline for this project does not fall within the next 5-years for LAR submittal.

• Longer-term modifications (>5 Years) for the Hatch digital program do have projects that will require a LAR (ECCS, etc) and will utilize the ISG-06 process.

7 Vogtle Projects

• Most of the near-term projects (<5 years) for the Vogtle digital program will use the 50.59 process.

• The PSMS project is to replace the existing PAM system with an upgraded digital system. This project is not expected to require a LAR.

• The RPS project will replace the existing system with an upgraded digital system.

This project will require a LAR and will utilize the ISG-06 process.

• 2026 - Letter of intent, Begin pre-submittal application readiness meetings

• 2028 - LAR Submittal

• Longer-term modifications (>5 Years) for the Vogtle digital program there are potential projects that will require a LAR and will utilize the ISG-06 process.

8 Conclusion

• The obsolescence and ageing of the current control and protection systems in the Nuclear fleet is quickly growing to be a heavy burden. The industry has done well to maintain and keep these systems at peak readiness but has had to endure great lengths in cost and maintenance efforts due to the ever-growing difficulty in finding parts and expertise. Thus, upgrading the older control and protection systems to advanced digital systems is crucial to continued safe and reliable operation throughout the industry.

• The SNC Digital program will be upgrading systems that will require a LAR and utilize the ISG-06 process. Ensuring efficiency, repeatability, timeliness, and accuracy in the ISG-06 process along with continued interaction with the NRC is critical for the success of these projects at SNC and throughout the industry.

• Questions?