CERTIFICATION STANDARDS

THE P.H.D. LOAD HEATER
IS THE ONLY ONE IN THE WORLD WITH CATALYTIC
REACTION OPERATING UP TO 1472^oF (800^oC )

CLASS 1, DIVISION 1 AND 2, GROUP D HAZARDOUS AREAS

The model 23 MEPCA and 30 MEPCA PHD HEATERS, are certified for use in the transportation of dangerous goods.

The electrical equipment and wiring supplied on the TYPE 1, 23MEPCA and 30 MEPCA P.H.D. load heater has been examined in accordance with, and complies with the requirements for Class 1, Division 1 and 2, Group D " Hazardous Locations" as per the CSA Standard C22.1 and C22.2 CANADIAN ELECTRICAL CODE, CEC, PART 1 "Safety Standard for Electrical Installations".

Under Section 18-002 of the CEC, Class 1 Hazardous locations are defined as: those (locations) in which flammable gases or vapours are or may be present in the air in quantities sufficient to produce explosive or ignitable mixtures. Class 1 is further divided into Division 1 and 2, hazardous locations. Section 18-004 defines and describes Class 1 Division 2 hazardous locations to which the model 23MEPCA and 30MEPCA P.H.D. load heater conforms to:

Class 1, Division 1 locations
- usually include locations where flammable volatile liquids or liquefied flammable gases are transferred from one container to another; interiors of spray booths and areas in the vicinity of spray and painting operations where volatile flammable solvents are used; locations containing open vats of volatile flammable liquids; drying rooms or compartments for the evaporation of flammable solvents; locations containing fat and oil extraction apparatus using volatile flammable solvents; portions of cleaning and manufacturing plants where hazardous liquids are used; those portions of gas manufacturing plants where hazardous concentrations of flammable gases are likely to occur in the course of normal operation; pump rooms for flammable gas or other volatile flammable liquids; and all other locations where hazardous concentrations of flammable vapours or gases are likely to occur in the course of normal operation.

Class 1, Division 2 locations
- usually include locations where flammable volatile liquids of flammable gases or vapours are used but which, in the judgment of the inspection department, would become hazardous only in case of an accident or of some unusual operating condition. The quantity of hazardous material that might escape in case of accident, the adequacy of ventilating equipment, the total area involved, and the record of the industry or business with respect to explosions or fires are all factors that should receive consideration determining the classification and extent of each hazardous area.

GROUP D ATMOSPHERES