Specific requirements for laboratory exhaust systems shall be reviewed with the University Safety and Risk Management Department and the University Project Manager. ANSI/AIHA Z9.5-2003 American National Standard for Laboratory Ventilation and NFPA-45 Standard on Fire Protection for Laboratories Using Chemicals shall be followed.
Design of fume hood exhaust systems should be in accordance with CSA Standard Z316, latest edition and the Minimum Guidelines for Laboratory Fume Hoods (PWGSC). Testing of fume hood performance as it pertains to installation and lab design shall follow ANSI/ASHRAE 110-1995 Method of Testing Performance of Laboratory Fume Hoods.
All systems shall have adequate supply of make-up air tempered to room temperature.
All spaces shall be designed under negative pressure to the adjacent spaces and as per Table 23 06 00.
Provide a duct washdown system for all perchloric acid exhaust systems. Perchloric duct system must be dedicated.
Use Type 316 stainless steel ducts.
Provide a face velocity monitor on all fume hoods.
All laboratory hoods and safety cabinets shall be equipped with visual and audible alarms to warn laboratory workers of unsafe air flows (Alnor 335).
Provide an eye wash station in laboratories that have at least one fume hood. Design should be in accordance with ANSI A358.1-2004 Emergency Eyewash and Shower Equipment.
Where corrosive material is used in the laboratory, locate eyewash station within 3 metres of material.