HAZARD TYPE LIST

© Canadian Standards Association Selection and installation of backflow preventers

Table B.1 Guide to degree of hazard - Point of use cross-connections

(See Clauses 5.4.1 and B.2.)

Source of pollution or contamination

Agricultural chemical (sprayer)

Air compressor oil cooler

Animal watering

Aspirator (non-toxic)

Aspirator (toxic)

Autoclave

Autopsy and mortuary equipment

Auxiliary water supply

Baptistery

Basin

Bathtub (all)

Bedpan washer

Beverage dispensing equipment (no carbonator)

Beverage dispensing equipment (with carbonator)

Bidet

Bottle washer

Bread making equipment

Canopy washers

Carwash

Chemical feed tank

Chiller tank (closed, no chemicals)

Chiller tank (open or with chemicals)

Chlorinator

Clothes washer (residential)

Condensate tank

· Condensate tank (top feed) .

Cooking kettle (for food only)

Cooling condenser, AC unit (solenoid downstream)

Cooling condenser, AC unit (solenoid upstream)

· Cooling tower

Cuspidor

~e-aerator (bottom feed)

De-aerator (top feed)

Degreasing equipment

November 2011

Degree of haz.ard

Severe

Moderate

Moderate~

Moderate

Severe

S~vere

Severe

Severe

Moderate

Moderate

Moderate

Severe

Minor

Moderate

Moderate to severe

Moderate to severe

Minor to moderate

Severe

Severe

Severe

Moderate to severe

Severe

Severe

Moderate

Severe

Moderate

Minor

Severe

Minor

Severe

Severe

Severe

Moderate

Severe

Licensed for/Autorise a Fiona Parlett Sold by/vendu par CSA onAe February/0812013. -Smgle user ll~ense only. Storage, distribution or use on network prohlbtted. Pennis d'utiUseteur simple seulement · • • • ,, •• •·~1 .. ., ... - -. 11,.,.1n ... .....u-- ...... t.. .-_.,., • .,,..,. i..t.attfi+ ·

(Continued)

41

864.10-11 © Canadian Standards Association

Table B.1 (Continued) Source of pollution or contamination Degree of haz.ard

Dental delivery system (water supply) Minor

Dental vacuum pump Severe

Detergent dispenser Severe

Dipper well in ice cream parlour or restaurant Moderate

Dish rinse unit with flex hose Moderate

Dishwasher (commercial) Moderate

Dishwasher (residential) Moderate

Distiller Minor

Dockside marine facility Severe

Emergency eyewash/shower Eyewash/shower to be installed upstream

Flexible shower head with hose Minor to severe

Floor drain with flushing rim Severe

Flush tank Moderate

Flushing equipment device Severe

Flushometer Severe ·

Fountain, ornamental Moderate to severe

Fountain, ornamental (chemicals added) Severe

Fume hood Severe

Garbage can washer Severe

Garbage disposal unit Severe

Heat exchanger (see Annex F and Clause 5. 10) Minor to severe

Hose connection (other than residential) Moderate to severe

Hose connection (residential) Minor to moderate

Hospital (active treatment area) Severe

Hospital (non-treatment area) Moderate

Hot tub or spa Moderate

Hot water systems (all types - direct heating of water supply) Minor (see Annex F and Clause 5. 10)

Humidifier Moderate

Humidifier with sump (chemicals added) Severe

Hydrotherapy bath Moderate

Ice machine for commercial restaurant Moderate to severe

Ice making equipment for sports arena Severe

Industrial fluid system Severe

Irrigation system (chemicals injected) Severe

Irrigation system (no chemicals injected) Moderate

48 Licensed for/Autorlse a Fiona Parlett Sold by/\lendu par CSA oru1e February/09/2013. · ~Single user license only. Slorage, distribution or use on network prohibited. Pennis d'utilisateur simple seulement Le stockage, !a distribution ou !'utilisation sur le reseau est interdit.

(Continued)

November 20 7 7

·"'

© Canadian Standards Association Selection and installation of bad<f/ow preventers

Table B.1 (Continued) Source of pollution or contamination

Lab bench equipment (non-toxic)

Lab bench equipment (toxic)

Lab faucet

Laboratory

Laundry machine

Lavatory .

Lethal substance

Livestock equipment

Mixing tee with steam and water

Mortuary or morgue

Non-potable water

Optician or ophthalmology equipment

Pedicure chair

Photo lab sink

Pipette washer

Piping to chemical dispensers

Plating tank

Potato peeler

Poultry barn

Pressure washer (no aspirator)

Pressure washer (with aspirator)

Private fire hydrants

Private water source

Pump primer line (non-toxic)

Pump primer line (toxic)

Radiator flushing equipment

Restricted area

Residential reverse osmosis equipment

Reverse osmosis equipment with backwashing

Reverse osmosis equipment with chemical cleaning

Serrated faucets

Sewage ejectors

Sewage pump

Shampoo sinks

Sizing vats

November 2011

Degree of haz.ard

·Minor

Severe

Moderate to severe

Severe

Moderate

Moderate

Severe

Severe

Moderate

·severe

Severe

Minor to moderate

Moderate to severe

Severe

Severe

Minor to severe

Severe

Moderate

Severe

Minor

Severe

Moderate

Severe

Moderate

Severe

Severe

Severe

Minor

Moderate

Severe

Severe

Severe

Severe

Moderate

Severe

Lfcensed for/Autorise a Fiona Parfett Sold by/vendu per CSA onlle Fabruary/0812013. - Sina!e user license only. Stonige, dislributian or use on n~prohlbited. PermlS d'utillsateur simple seulernenl

(Continued)

49

864.10-11 © Canadian Standards Association

Table B.1 (Concl~ed) Source of pollution 'or contamination Degree of hazard

Solar hot water systems (residential - no chemicals added} Minor to moderate (see Annex F and Clause 5.10)

Solar hot water systems (residential:...__ relatively harmless heat Minor to moderate transfer fluid) (see Annexes F, G and Claus'e 5.10)

Solar hot water systems (residential - toxic heat transfer fluid) Severe (see Annexes F, G and Clause 5.10)

Solar hot water systems (commercial - single wall heat Moderate to severe exchangers) (see Annex F and Oause 5.10)

Solar hot water systems (all types - double walled heat Minor exchangers) {see Annex F and Clause 5.10)

· Solar hot water systems (make-up water connection to the heat Minor to severe transfer fluid piping loop) {see Annex F and Clause 5.10)

Solution tanks Severe

Spa or hot tub M9derate

Specimen tank Severe

, Steam boiler Severe

~team cleaner Moderate

Steam generator Moderate

, Steam table Minor to moderate

Sterilizer (condensate cooling only) Moderate

Sterilizer (connection into chamber) Severe

Still Minor

Swimming pool (direct connection) Moderate

Swimming pool (other than residential) Moderate

Swimming pool (residential) Minor

Swimming pool makeup tank Moderate

Teeth deaning equipment (veterinary type) Moderate

Trap primer Severe

Vending machine with no carbonators Minor

Wash rack Severe

Wash tank Moderate

Wash tanks (toxic) Severe

Water closet (flushometer type) Moderate

Water closet (tank type). Moderate

Water hauling equipment {see Annex q Severe

Water softener (residential) Minor

Water softener drain (residential) Moderate

Wok table (for Oriental cooking) with submerged inlet Moderate

X-ray equipment Severe

SO November 2011

L censed for/Av\onse a Fiona Parfett Sold b_ylvendu par CSA onne February/0812013. - Single user license only. Storage, dislributiOn or uee on network prohibited. Pennis d'utilisateur simple &eulemenl Le slockage, la dis!nlil.lbon ou rutilisation sur le ""8au est inlerdil.