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Building Endstate Strategy Project - PNGS

Comprehensive support for a long-term Safe Storage strategy
 

Project Objective


The main purpose of the project was to conduct a technical assessment of OPG’s proposed building strategy for PNGS to maintain the plant for a long-term storage with surveillance period of approximately 30 years.
 

Scope of Work

 
  • Validate the proposed strategy using relevant codes, standards and operating experience;
  • Understand the minimum inspection, monitoring and maintenance requirements for buildings during Safe Storage so that structures can be maintained safe to enter and able to withstand any future dismantling and demolition work being performed;
  • Minimize any new hazards that might arise during building lay-up (e.g. as a result of corrosion or biological infestation); and
  • Identify any reasonably foreseeable complications that might arise during the storage with surveillance phase or, the dismantling and demolition phase of decommissioning which could impact costs.

Solutions and Work Performed  

This project was awarded to Candesco because of our multidisciplinary project team and expert contractors. We bring extensive knowledge of OPG Pickering, international experience on Safe Storage planning, experience working with OPG Decommissioning, expertise with the relevant codes and standards, and first-hand experience from similar project in the United States and Europe.
  
Candesco committed to successfully delivering this project through:
  • Understanding of current and expected evolution of regulatory requirements – Team members have been involved in the development of the Canadian Standards Association N294 (Decommissioning of facilities containing radioactive materials) standard and leadership of the Task Force responsible for revising the annex on “Defining end state objectives for decommissioning" 

  • Real Experience with Safe Store – Team members were responsible for developing the end points for placing Three Mile Island Unit 2 (TMI‐2) and the Power Burst Facility Reactor at the Idaho Nuclear Engineering Laboratory in Safe Storage; 
  • Alignment with leading international initiatives – Team members are responsible for managing the activities of the International Atomic Energy Agency (IAEA) International Decommissioning Network;
  • In‐depth knowledge of CANDU decommissioning planning and costing – Team members have extensive experience developing decommissioning plans and decommissioning cost estimates for CANDU nuclear power plants in Canada and overseas; and

  • Experience planning and managing nuclear remediation projects – Team members have been responsible for the planning and management of the remediation of nuclear facilities that had not been placed in a secure Safe‐Storage state (in Canada: Tunney’s Pasture, Defence Research Establishment (DRE) Suffield, Defence Research and Development Canada (DRDC) Ottawa).  

Results and Client Benefits
 
  • Candesco validated the strategy for each building group based on the applicable guidelines, codes and standards; international operating experience (OPEX); good engineering practices and sound business principles, while identifying any shortcomings in meeting the requirements; 
  • Candesco also provided recommendations for achieving compliance during the course of the project, while identifying any opportunities for improvement.
  • OPG can use the results for planning purposes and to determine the final building endstates and the auxiliary systems support during Safe Storage: 
  •     Endstate strategy assessment
  •     Idenfication of cost drivers and future hazards to the Pickering endstate strategy

          

 

About This Case Study

Industry Sector

  • Generation

Generation Type

  • Nuclear

Nature of Service

  • Environmental
  • |
  • Consulting
  • |
  • Waste Management
  • |
  • Safety
  • |
  • Inspection

Client Assets

  • Nuclear Fuel

Kinetrics Facilities

  • Radiochemistry Laboratory
  • |
  • Decontamination and Refurbishment Facility

Tags

  • corcorrosion assessment
  • |
  • Safe Storage
  • |
  • Decommissioning
  • |
  • Nuclear Inspection
  • |
  • monitoring