Solutions-Based, Service-Oriented Nuclear Engineering.

A single source solution for your nuclear engineering, fabrication, construction, and maintenance needs.

Canadian Nuclear Contracting

Nuclear Services

E.S. Fox Limited is a people-first, environmentally conscious, socially responsible EPC provider in the Nuclear sector with every aspect of its development. E.S. Fox Limited’s Nuclear Services contributed millions of hours in support of Ontario’s safe and reliable Nuclear power industry. We provide our clients with a streamlined solution for their detailed engineering, fabrication, construction, and maintenance needs. As the Nuclear power generation sector evolves from large Nuclear reactors to Small Modular Reactors, we are primed to support the transition and future growth while maintaining and refurbishing the existing Ontario nuclear fleet.

The E.S. Fox Limited Quality Assurance/Quality Control Department is responsible for ensuring that our Quality Management System (meeting the requirements of CSA N286-12 and CSA N299.1, as well as CSA N285.0 and Conventional Code requirements) is effectively implemented for all Engineering, Procurement and Construction activities. Our QA/QC Department is responsible for all activities completed in accordance with all applicable Codes, Jurisdictional and specified Technical Requirements. This is achieved through the preparation and completion of Inspection & Test Plans; monitoring and acceptance of Special Processes in accordance with procedures (including Welding, Non-Destructive Examination and Heat Treatment); Qualification and Approval of Suppliers and Source Surveillance of their activities; interfacing with Owner Quality Management and Jurisdictional Authorities.

Fabrication facility who perform Pressure Boundary and non-pressure boundary equipment design for fabrication. We have completed designs on nuclear class and non-nuclear class projects for various equipment and components. This includes full production of Professional Engineering fabrication drawings and any associated calculations/analysis. Our fabrication facilities include a specialized Weld Engineer on the premises to review all welding details and provide welding procedures. ESFL is proud to be the only nuclear fabrication provider with a fabrication shop situated with direct access to major Canadian waterways at the Welland Turning Basin of the St. Lawrence Seaway.  

E.S Fox Limited’s Nuclear Services includes a Project Management Office with a suite of best practices focused on our clients. We have offices on client properties at Darlington Nuclear Generating Station (DNGS), Bruce Power, Pickering Nuclear Generation Station (PNGS), and Canadian Nuclear Labs (CNL) in Chalk River. On-site offices ensure efficient client communication and a strong leadership field presence to oversee project execution. Our team is experienced with all contract models, and our comprehensive project management software provides our project team with critical data in near real time on: – Cost Management – Schedule Management – Change Management – Risk Management – Earned Value Tracking With a foundation of Nuclear project management experience dating back to the opening of the earliest nuclear site in Canada, ESFL is equipped with decades of project management lessons learned to provide unique solutions to our client’s needs.

Through decades of working in the nuclear industry, we have developed industry-leading procedures used to provide our clients with the highest quality EPC services. Our mission of being the Nuclear Services provider of choice for our clients starts with the excellence of our Engineering, Procurement, and Construction (EPC) and Engineering, Procurement and Construction Management (EPCm) offerings. We have decades of experience in the Nuclear Protected Area, executing hundreds of projects from start to finish.

Equity, Diversity, and Inclusion is a priority at E.S. Fox Limited (ESFL) as we strive to ensure our working environment remains diverse and inclusive. We are committed to the goal of strengthening connections between corporate Canada, Government and Indigenous businesses across the country. ESFL became a Canadian Council for Indigenous Business Member (CCIB) in February 2016 and joined the Progressive Aboriginal Relations (PAR) program, as well as the CCAB Aboriginal Procurement Champion Program. We are an active member of the IRSN (Indigenous Relations Suppliers Network), and the Ontario Power Generation Indigenous Opportunities in Nuclear (ION) Steering Committee. ESFL is also a proud corporate partner of Women Business Enterprises Canada (WBE Canada), and Women in Nuclear (WiN) Canada, which foster and promote active involvement across our sectors by women and women-owned and operated businesses. ESFL is committed to staying connected to and providing continuous support to all our communities.

Safety & Quality Control

The E.S. Fox Limited Quality Assurance/Quality Control Department is responsible for ensuring that our Quality Management System (meeting the requirements of CSA N286-12 and CSA N299.1, as well as CSA N285.0 and Conventional Code requirements) is effectively implemented for all Engineering, Procurement and Construction activities. Our QA/QC Department is responsible for all activities completed in accordance with all applicable Code, Jurisdictional and specified Technical Requirements. This is achieved through the preparation and completion of Inspection & Test Plans; monitoring and acceptance of Special Processes in accordance with procedures (including Welding, Non-Destructive Examination and Heat Treatment); Qualification and Approval of Suppliers and Source Surveillance of their activities; interfacing with Owner Quality Management and Jurisdictional Authorities.

E.S. Fox Limited Nuclear Services has Professional Engineers at the Port Robinson Fabrication facility who perform Pressure Boundary and non-pressure boundary equipment design for fabrication. We have completed designs on nuclear class and non-nuclear class projects for various equipment and components. This includes full production of Professional Engineering fabrication drawings and any associated calculations/analysis. Our fabrication facilities include a specialized Weld Engineer on the premises to review all welding details and provide welding procedures.

E.S Fox Limited’s Nuclear Services includes a Project Management Office with a suite of best practices focused on our clients. We have offices on client properties at Darlington Nuclear Generating Station (DNGS), Bruce Power, and the Pickering Nuclear Generation Station (PNGS). On-site offices ensure efficient client communication and a strong leadership field presence to oversee project execution. Our comprehensive project management software provides our project team with critical data in near real time on: – Cost Management – Schedule Management – Change Management – Risk Management – Earned Value Tracking With a foundation of Nuclear project management experience dating back to the opening of the earliest nuclear site in Canada, E.S. FL is equipped with decades of project management lessons learned to provide unique solutions to our client’s needs.

Through decades of working in the nuclear industry, we have developed industry-leading procedures used to provide our clients with the highest quality EPC services. Our mission of being the Nuclear Services provider of choice for our clients starts with the excellence of our Engineering, Procurement, and Construction (EPC) and Engineering, Procurement and Construction Management (EPCm) offerings. We have vast experience in the Nuclear Protected Area, executing hundreds of projects from start to finish.

Equity, Diversity and Inclusion is a priority at E.S. Fox Limited (ESFL) as we strive to ensure our working environment remains diverse and inclusive. We are committed to the goal of strengthening connections between corporate Canada, Government and Indigenous businesses across the country. ESFL became a Canadian Council for Aboriginal Business Member (CCAB) in February 2016 and joined the Progressive Aboriginal Relations (PAR) program, as well as the CCAB Aboriginal Procurement Champion Program. We are an active member of the IRSN (Indigenous Relations Suppliers Network), and the Ontario Power Generation Indigenous Opportunities in Nuclear (ION) Steering Committee. Lastly, ESFL is also a proud sponsor of Habitat for Humanity, Grey Bruce. E.S. FOX LIMITED also participated in a Build Site in Hamilton in partnership with AMD Dofasco where E.S. FOX LIMITED donated all mechanical and electrical materials and labour to the project.

Nuclear Services

Nuclear Energy Projects

Join us for

Darlington TCV20 Project

Client: Ontario Power Generation

Location: Bowmanville, ON

Trades: ELectrical, Piping, Scaffolding, Insulators

Engineer: Ontario Power Generation

The Temperature controlled valve 6721 0-TCV20 together with its controller 64230-TT20 control the cooling water (LPSW) flow through the Generator Hydrogen Coolers to maintain generator hydrogen temperature constant. Better TCV and TT were installed to minimize degradation/aging of generator insulation and to reduce the risk of a unit trip on high gas temperature. The new controller improves the response time of the control loop so that no manual intervention is required during TG run-up and address the issue of obsolescence. The new control valve has a linear characteristic covering the full operating range of the valve, in particular at the bottom end of the valve.

The temperature control must be responsive and capable of handling seasonal lake temperature fluctuations. The Temperature Control System is required to provide cooling control over a wide range of operating conditions. The TCV must be able to handle the high LPSW flow during summer when reactive power is high and lake temperature is high as well as the low LPSW flow during winter when the reactive power is low and lake temperature is low. The generator is designed to operate at full MW with one H2 cooler isolated. The TCV and TT may operate in split ranges in order to meet the seasonal variations of cooling demand.

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Retube & Feeder Replacement

ClientOntario Power Generation

LocationBowmanville, ON

TradesN/A

EngineerOntario Power Generation

E.S. Fox Limited was the EPC contractor for construction of the Retube & Feeder Replacement Island Support Annex (RFRISA) facility. The new building consists of 37,50 ft2 of floor space, of which 12,000 ft2 is set aside for the workshop. The RFRISA meets the needs of the Nuclear Refurbishment Project for the duration of all Refurbishment activities. The RFRISA facility provides the following:

a) Demolition of the existing Reactor Maintenance Building (Building 29) and associated trailers T27 and T30 (if applicable) currently located within the RFRISA footprint; relocation of existing site services

b) A minimum of 200 offices and workspaces; one 90 person pre-job brief area and one 40 person conference room.

c) Shop facilities, including bridge crane, to meet the needs of Nuclear Refurbishment

d) Associated Building Services and Station System tie-ins.

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Refurbishment Project Office

ClientOntario Power Generation

LocationBowmanville, ON

TradesN/A

EngineerOntario Power Generation

E.S Fox Limited was the EPC contractor for construction of a new 97,000 ft2 Refurbishment Project Office (RPO) to meet the needs of the Nuclear Refurbishment Project for the duration of Refurbishment activities. The RPO is a stand-alone building located in the southwest corner of the DNGS site and provides OPG with the following amenities:

– A secure access point to the DNGS Protected Area for the Nuclear Refurbishment workforce
– A minimum of three hundred offices and supporting features for OPG and Contractor Project Management staff
– A lunchroom including a food storage area for up to 1,100 lunches, with a minimum throughout of 400 people per half hour on staggered lunches
– A secure locker and change room providing work crews with storage for street clothing when working in radiation protection clothing. The change room incorporates a separate storage area for radiological and conventional PPE
– A secure Project Work Site Surveillance Room
– Associated Building Services and Station System tie-ins including Security tie-ins
– Hook-ups/distribution hub for connection and supply of LAN, phone, electrical services, and Public Address for six external office trailers.

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DNGS – U2 Fire Protection

ClientOntario Power Generation

LocationBowmanville, ON

TradesElectrical, Carpenters, Labourers, Millwrights

EngineerTetra Tech

The project was an EPC contract awarded as part of the DNGS Refurbishment program. The purpose of the project was to perform a number of different modifications to address performance gaps in the fire protection systems across Unit 2 and Unit 0 of Darlington Nuclear Generating Station.

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Darlington Vault Vapor Recovery

ClientOntario Power Generation

LocationBowmanville, ON

TradesSheet Metal, Pipefitters, Electricians, Carpenter, Labourers

EngineerTetratech

The purpose of the reactor Vault Vapor Recovery System (VVRS) is to recover D2O
vapors for economic reasons and to maintain low tritium contamination levels in the
containment areas in order to minimize internal dose to personnel. The system is a vital component of the Contain portion of the reactor safety 3Cs. It is classified as a System Important to Safety as part of the Negative Pressure Containment system which maintains containment at negative pressure compared to atmosphere
to prevent uncontrolled releases. The VVRS project consists of upgrading
aging equipment, installing new redundant containment boundary valves, installing a connection for moderator vacuum drying equipment and installing temporary bypass fans to keep the vault at negative pressure during the phase where airlock doors remain open. Keeping the doors open is crucial: it allows for efficient passage of equipment and workers during the removal and subsequent construction phases of refurbishment.

E.S. Fox Limited worked on the VVRS projects for all 4 units, completing units 1, 3 and 4 on schedule and under budget.

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