EMERGING REQUIREMENTS

Transcription

1 Page of 0 EMERGING REQUIREMENTS EXTERNALLY INITIATED PLANT RELOCATIONS THESL distributes electricity to residential, commercial, and industrial customers via overhead and underground infrastructure. This infrastructure is located primarily on City of Toronto ( City ) owned roadway/property. Every year the City identifies projects to maintain their infrastructure that are located on the right of way by reconstructing roadways, widening roads, repairing/expanding sewer lines, replacing water mains, repairing bridges and other streetscape improvements to expand or maintain City-owned infrastructures on rights-of-way. In some cases, the Toronto Transit Commission ( TTC ) executes its construction programs to rehabilitate and expand streetcar tracks, extend subway lines, and replace steel poles on the road allowance in conjunction with the City s programs. See Figure for an overview map of the TTC Transit City Light Rail Plan. 0 THESL s Asset Management team works with the City and TTC to co-ordinate work programs, minimize scheduling conflicts and identify opportunities for joint benefits. The team reviews the City s long-term plans, negotiates priorities, coordinates schedules, and identifies new infrastructure requirement. Detailed infrastructure relocations are often impractical to identify at this stage, because the detailed road curb realignments and/or road elevations are not known. Conflicts are identified once curb alignments and the final road grade are finalized as part of the final design package. THESL can receive a capital construction recovery for a portion of its infrastructure relocation work. Road construction cost-sharing arrangements based on the Government of Ontario s Public Service Works on Highway Act, R.S.O. 0, Chapter P., stipulate that THESL is required to pay 00 percent of THESL s materials for THESL s relocation

2 Page of work. However, the associated labour and vehicle cost are shared 0:0. The relocation activities are divided into two major types: Overhead and Underground plant relocations. 0 OVERHEAD PLANT RELOCATIONS Overhead plant relocations result from City roadway realignments, addition of new lanes, or adjustments to roadway dimensions. As a result, the overhead plant, including poles, lines, switches and overhead transformers must be relocated to newly constructed pole lines. In some cases, underground cable chambers, underground cables, and services must also be relocated to properly supply the relocated overhead plant. This work involves rebuilding cable chambers or chamber roofs, depending upon the impact of the reconstruction and condition of the existing plant, as well as associated civil work that may be needed to support the service. THESL s relocation projects are generally non-discretionary, and cannot be postponed, so it is essential to work very closely with the City s construction and project management teams. 0 UNDERGROUND PLANT RELOCATIONS Underground plant relocations typically result from City rehabilitation of bridges where distribution cables are present, or from changes to road elevation, which require relocation of underground infrastructure. In some cases, road realignments can lead to reduced clearances between existing overhead plant and existing buildings, necessitating partial or entire relocation of the overhead plant underground. This can require construction of new ducts, cable chambers, transformer vaults, switching vaults, and new service ducts.

3 Page of 0 THESL presently has infrastructure (typically cable) on bridges that are owned by the Ministry of Transportation ( MTO ) and bridges owned by the City. Where bridges exist, they are a normal part of the route for distribution feeders used to supply customers. When a bridge rehabilitation project is initiated by the MTO or the City, THESL is notified to relocate its existing distribution plant either off the bridge completely, or to the outside of the existing bridge structure. On City-owned bridges, THESL has the ability to relocate the existing plant to the outside of the existing bridge. However, all current MTO bridge projects require THESL to completely remove its distribution plant off the bridge. Relocating distribution plant from bridges is very costly, and in many cases limits THESL s power distribution flexibility. 0 Recent announcements to expand public transit, rebuild roadways, bridges and highways, and improve the water delivery system have resulted in more City and TTC infrastructure programs. THESL anticipates a requirement to relocate significantly more infrastructure over the next ten years. On April, 00 (in Vaughan, Ontario) and May, 00 (in Toronto, Ontario) various levels of governments including municipalities in the surrounding GTA area announced a $0 billion infrastructure renewal program to create jobs and improve the existing public transportation system. This announcement will have an impact on existing THESL plant, which is located in City rights-of-way. This plant relocation cost is estimated to be approximately $0 million over the next ten years. Based on information from the City and the TTC, THESL has budgeted $. million in new project work for 00. The total expected project work in Overhead Plant Relocations is $ million, and the total expected project work in Underground Plant Relocations is $.million. Based on a detailed review of the Externally Initiated Plant Relocation projects planned for 00, THESL has budgeted $.million in capital construction recoveries from the City/TTC for their contribution to the projects based on the cost sharing agreement. The

4 Page of 00 net spending, therefore, is forecast to be $. million as shown in Table below. Table : Externally Initiated Plant Relocation Summary ($ millions) 00 Historical 00 Bridge 00 Test Externally Initiated Plant Relocation - Gross.0.. Less Contributions 0.. Externally Initiated Plant Relocation - Net.0.. Note: The 00 Historical and 00 Bridge Gross amounts are captured in the sustaining capital programs and are not shown separately in the summary table in, Tab, Schedule.

5 Figure : Toronto Transit City Light Rail Plan Toronto Hydro-Electric System Limited Page of