YEC is undertaking a program to certify all single devices that isolate confined spaces as per Workers’ Safety and Compensation Board Yukon Part 2 – Confined Spaces, Section 2.11. These confined spaces consist of penstocks, power tunnels, scroll cases and draft tubes. The hazard being isolated by these devices is the water head/pressure from the forebay or tail pond.
As in other jurisdictions in Canada, the Yukon Workers Compensation Board (WCB) requires that an approved alternate means of isolation needs to be used if standard means of isolation cannot be put in place (ie. Blank/double block and bleed). YEC aims to follow the industry standard practice of Single Device Isolation Certification (SDIC) in order to satisfy the WCB requirement for an approved alternate means of isolation.
As an initial step in this process, YEC would like to retain the services of a qualified vendor to perform the SDIC certification including design adequacy assessment, site visits and review of Non-Destructive Evaluation (NDE) inspection reports for 15 devices.
The final deliverable expected from the successful Consultant will be a report on each device summarizing the design adequacy in light of the current condition and leakage performance of the isolating device. If no work is required, an SDIC device certification shall be issued by the Consultant with the stamp of a Yukon P.Eng. If the device is determined not to be certifiable in it’s current state, a high level summary of the work required to achieve SDIC device certification shall be included in the summary report. The detailed design and execution of this corrective work will be separate as it is hard to quantify without first assessing.
