Harriet Brooks Building (Building 350 Laboratory) - Canadian Nuclear Laboratories

Project Overview

The new Harriet Brooks Building (Building 350 laboratory), with a gross building area of more than 137,000 square feet, includes facilities required to maintain and develop technology programs to support applicable Canadian Government initiatives at the Canadian Nuclear Laboratories (CNL). The project involved the consolidation and relocation of a number of laboratories, including the Decontamination and Chemical Cleaning Laboratories, the Chemistry Loops Facility, and the Chemical and Corrosion Autoclave Test Facility. The building includes Class C laboratory space, and is constructed in Controlled Area 1. The facility is LEED Silver certified.

Significant mechanical and electrical services and infrastructure work was completed to support complex laboratory requirements. As well, a new switchyard connection entailing new electrical equipment, infrastructure, and connection to the existing, operating switchyard (located within the CNL campus) was put in place to provide a new main electrical feed.

The scope of the project included the relocation of more than 200 pieces of laboratory equipment from three separate existing laboratories on the CNL campus to the new laboratory. PCL coordinated the handling and placement of radiation protection equipment, as well as that of seven major specialty-research-equipment systems. To ensure the laboratory specialty equipment would fit within the constraints of the building design, PCL and CNL worked collaboratively with the specialty equipment provider using 3-D modeling. The model, which was completed for structural, mechanical, and electrical coordination drawings for the base building and laboratory construction, proved invaluable for visualization of the lab specialty equipment in its final location. This virtual construction method identified potential interference of mechanical and electrical systems and spatial requirements, thus ensuring the seamless installation of the new equipment.


Canadian Nuclear Laboratories
Chalk River, ON
Ottawa – Buildings & Civil Construction
PCL Constructors Canada Inc.
Agribusiness, Food Services, and Manufacturing, Commercial, Green - Sustainable Construction
General Contracting


LEED Silver Certification - Canada Green Building Council (CaGBC)