Currently, Place du Portage III (PDPIII) provides steam for humidification of Place du Portage IV (PDP IV). An ongoing major renovation project (PDPIII Asset and Workplace Renewal) will seek to disconnect this source of steam as base building equipment will be decommissioned; therefore, a new source for humidification of PDP IV is required. This project will replace the existing district steam connection which is currently generated from natural gas steam boilers in PDP III, and eliminate the reboiler at PDP IV. Two options were considered:
1) a centralized system from electric steam boilers located in PDP IV mechanical space in the basement level that provides the humidification for the entire facility; or
2) a decentralized system with additional electric steam boilers located on level 15 PDP4 mechanical room to limit the quantity of piping distribution necessary to reach the 15th floor from the basement.
Either of the proposed systems will result in negligible greenhouse gas (GHG) emissions for the building, which currently has none. Furthermore, they will contribute to eliminating the need for natural gas as an energy source for building steam humidification, which was previously provided through PDP3. Given the requirement to carefully coordinate the project with the PDP3 AWR, BGIS has engaged the same consultant to prepare the tender package who also prepared the feasibility study. They are very familiar with both projects and should be able to expedite the design and substantive cost estimates to accelerate Gate 3 business case planning, mitigating schedule risk.
This project involves the replacement of the existing source of steam for Place du Portage IV (PDP IV) currently generated by natural gas steam boilers located in Place du Portage phase III (PDP III), by either a centralized or decentralized system from electric steam boilers located in PDP IV.
Project implementation will include the design phase, the construction phase through the installation of purchased new mechanical and electrical equipment and commissioning activities. Operations and maintenance activities are not considered for this project.
The proposed systems will maintain the greenhouse gas (GHG) emissions of the complex, and it will also mitigate the need for natural gas as a source of energy for building steam humidification.
