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Hydrogen Vent Sizing and Design
Discharges of gaseous hydrogen to the atmosphere shall be disposed of through an engineered vent system that complies with the associated code regulations and can withstand wind loads. Hydrogen-air mixtures are extremely easy to ignite — thus, ignition at the outlet of a vent should be considered as a design event rather than an emergency.
Emergency Lighting
Emergency lighting intended to provide illumination for evacuating a building/plant in the event of failure of normal power supply is considered to be part of the Life Safety System.
Electrical Clearances: Best Practices
When sizing a room, or an area that will house electrical equipment, there are many variables to consider. It is clearly stated in the Ontario Electrical Code book that “electrical equipment shall be installed and guarded so that adequate provision is made for the safety of persons and property and for the protection of the electrical equipment from mechanical or other damage to which it is likely to be exposed” (OESC 2-200). This can be done with a dedicated electrical room/space, signage, physical barriers, and training. When working with other disciplines, the electrical team must communicate the physical size, and space needed to follow all of the rules stated in the OESC, of the chosen electrical equipment.
Pre-Start Health and Safety Reviews (PSR): An Overview
The purpose of this knowledge file is to provide a basic overview of what a pre-start health and safety review (PSR or PSHSR) is in order to facilitate the planning and coordination of PSR projects.














