HH Angus redesigned the pump house and storage tank farm providing automotive fluids to the vehicles in the truck assembly plant.

Our project scope covered replacing ten 50,000 litre and three 25,000 litre storage tanks. The system also required seven new truck offload pumps and twelve new plant delivery pumps. Because it was not an option to shut down the plant to facilitate the work, co-ordination and timing between the construction activities and plant operations was critical to the success of the project.

A steam-heated glycol loop heating system was provided for the storage tanks containing high viscosity fluids. Glycol was pumped through a closed loop system and controlled via temperature control valves in each tank.

Due to the flammable and combustible fluids stored at this facility, a four zone Aqueous Film Forming Foam (AFFF) fire protection system was used. The total calculated flow was greater than 3,000 USGPM. The fire protection system was interlocked electrically to the process function, and connected directly to both the in-house and municipal fire brigade to assure maximum protection and safety.

This automotive plant project involved combining the process waste flow from two paint shops into a common process gravity sewer system leading to the onsite waste treatment plant. 

The calculated maximum combined flow was, in fact, greater than the 1900 USGPM capacity of the existing gravity sewer, which necessitated flow control measures to meter the flows. Since flows from both plants fluctuated with shift loads, storage head tanks were installed to allow the metered flow to function effectively.

Another challenge was the difference in flow velocity. The new paint shop process water was being pumped, while the process waste from the existing paint shop flowed by gravity. In order to discharge the pressure and velocity energy from the pumped process waste, a two-compartment underground concrete quiescent chamber was designed and installed between the pumped and gravity sewers. This allowed the two waste streams to mix and flow to the waste treatment plant much more effectively.

HH Angus has served as the Prime Consultant for a variety of automotive plant additions and renovations for General Motors. These are three of many projects for this valued client.

C/K* Truck Plant

HH Angus coordinated the 1,800,000 ft2 addition to both the building and building services for the new modular paint shop, body shop, paint oven enclosure and elpo phosphate process.

This project included the installation of three 633-ton chillers and one 250-ton chiller for building and process chilled water loads.

* C/K: C indicates 2-wheel drive trucks and K refers to 4-wheel drive.

GMT 800 Oshawa Truck Plant

This was a 300,000 ft2 addition to the existing C/K Truck Plant in Oshawa. Our project scope included coordinating architectural and structural design, mechanical/electrical design, and contract administration. The building is a 35 foot high, single-storey structure with insulated metal siding and 42,000 ft2 mezzanines with washrooms and one mezzanine for the welder water system. The project included a new 8,000 ft2 room and a quality measurement laboratory. The project included electrical bus duct distribution to process loads, as well as a quadruple-ended paralleled welding distribution system for welding robots.

Renovations to C/K Truck Plant

This project consisted of a four-bay addition with four levels to the existing paint shop facility at the Oshawa Truck Plant to house a new primer surfacer spray booth, accumulator conveyor, prep booth, freight elevator, storage, clean room and all associated building services.