The Connector - Fall 2008 - (Page 22)

Fall 2008 • Anti-siphon device so liquid chemical solution cannot be siphoned after the solution feeder into the water supply • Tanks and tank refilling line properly labeled • Chemicals stored in covers or unopened shipping containers • No unprotected cross connection between overflow from drain line, feeder, solution chamber, or tank and any sewer • Chemical feed equipment operable and in good condition • Spare parts or replacement equipment available for all chemical feeders • Feed lines protected against freezing • Feed lines made of durable, corrosion-resistant material • Chemicals from feed point to point application in separate conduits • Incompatible chemicals stored separately • Daily operating records reflect chemical dosage and quantities • Chemical feeders properly calibrated • Ability to measure the quantities of chemicals used • Acids and caustics kept in closed corrosion-resistant container • Chemical and water contact materials approved by ANSI/NSF • Wastes discharged properly • Documentation of any interruption in disinfection process during the past year • Chemical contact time adequate • Flow measurement of water treated • Disinfection residual at entry point of the distribution system • At least a trace residual at all points of distribution system • Chlorine residual tested at least three times a week • Adequate number of disinfection residual sampling sites RWAU • Chlorine room heated and protected from excess heat • Scales to weigh gas chlorine cylinders/containers • Respiratory protection equipment available, maintained, stored properly • Chlorine gas feed and storage enclosed and separate from operating area • Louvers for chlorine room air intake and exhaust facilitate airtight closure • Separate switches for fan and light located outside chlorine room • Vents from feeders and storage discharged to outside atmosphere, above grade, screened and cleared • Full and empty cylinders properly restrained • Full and empty cylinders not exposed to direct sunlight • Gauges measuring water pressure at inlet and outlet of injector • Each injector supply line has shutoff valves • All openings between chlorine room and main building shall be sealed Booster Stations: • Documentation of unexpected leakage from piping or appurtenances • Rotating and electrical equipment with protective guards • Types of pumps • At least two functioning pumping units • Ability of rest of pumps to provide the same quantity when largest pumping unit is out of service • Equipment protected from flooding • Adequate drainage • Heating, ventilation and lighting • No cross connection present in pumping facility • Check valve, isolation valve, pressure gauge, and flow meter on each pump discharge • Shutoff valves on suction (flooded suction) and discharge sides of pump • Air release discharge line down-turned, screened (#14 mesh) air gap from floor (minimum 6 inches) Storage Tank: • Name of storage facility • Total capacity of storage facility • Area surrounding tank graded for 50 feet from tank to drain water from tank • Watertight roof • Roof slope, unsealed roof penetrations, • Ladder, ladder guards, balcony railing, and safely located entrance hatches • Air Vent Turned downward or covered to prevent dust or rain contamination 1-36 inches above roof #14 screen with larger gauge protection • Access opening Locked Shoe box lid • Overflow The Connector 368185_backflow.indd 1 2/21/08 12:23:37 22 PM http://www.backflow-supply.com

Table of Contents Feed for the Digital Edition of The Connector - Fall 2008

The Connector - Fall 2008 Table of Contents President’s Message Executive Director’s Comments Letters From Readers Legislative Update Rural Water News Making an Impression Diana Waite Love Your Neighbor Erin Borger Sanitary Surveys – What to Expect: Part II Chuck Jeffs Water Wise Utah Mary Dickson Where in Utah? Index of Advertisers

The Connector - Fall 2008

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