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Fluoride Receiving Safety

Fluoride Receiving Safety. Metropolitan Water District of Salt Lake and Sandy Mark Sarvela 5 ½ years Metro Plant Manager, System Operator 17 years Washington State GO SEAHAWKS!. WHAT IS FLUORIDE? . There are three fluoride compounds used for drinking water fluoridation:

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Fluoride Receiving Safety

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  1. Fluoride Receiving Safety Metropolitan Water District of Salt Lake and Sandy Mark Sarvela 5 ½ years Metro Plant Manager, System Operator 17 years Washington State GO SEAHAWKS!

  2. WHAT IS FLUORIDE? There are three fluoride compounds used for drinking water fluoridation: Fluorosilicic Acid Sodium Fluoride Sodium Fluorosilicate Most common in water treatment is Fluorosilicic Acid It is a water based solution which may also be referred to as hydrofluorosilicate, FSA, or HFS.

  3. Proper Chemical Handling and Operator Safety is Critical! Fluorosilicic Acid is delivered and added to a water supply in a liquid Sodium Fluoride and Sodium Fluorosilicate are delivered as dry chemical and then dissolved in water prior to being added to the water supply. A survey of Oregon and Washington water treatment plants using fluoride found that Fluorosilicic Acid is used at plants with flow rates greater than 40 MGD. A simple design and minimal chemical handling are the primary reasons FSA is most commonly selected by larger utilities.

  4. Before an Operator is to be involved with receiving a delivery of Fluorosilicic acid they must adhere to the following: Understand the MSDS for Fluorosilicic Acid. Understand and follow the SOP. Know the location and condition of the offload eyewash station. Treat all chemicals with caution and respect. Complete training with senior operators before attempting to offload alone. Bulk tank over flow level is (10 ft on Scada) or (11 ft actual).

  5. Fluoride Offload at Acid Sump BLOCKROADWAY WITH CONES DURING CHEMICAL OFFLOAD

  6. BUCKETS OF LIME SLURRY FOR NEUTRALIZING

  7. Cam loc fitting Acid Receiving Sump Fluoride Off Load Area Bucket Strainer Locked butterfly Valve Glued Fittings Double walled containment underground

  8. FLUORIDE BUILDING SecurityCamera Ventilation draw ports Alarm Strobe Sump access door

  9. FLUORIDE BUILDING ENTRANCE

  10. ACID RESISTANT COVERALL AND OTHER APPROPRIATE PPE

  11. FLUORIDE FEED PUMPS

  12. Electrical Outlet Access Door Pressure Sensor Sump Pump Discharge Tube Overflow / Vapor Barrier Containment Sump

  13. RINSE BUCKETS AT EXIT

  14. Cleanup and Hygiene Rinse gloves and boots with lime slurry to neutralize Hose down offload area. Hose down all PPE. Remove PPE and properly store in locker area or designated area. Wash hands and face thoroughly. Take a shower if available.

  15. Comments or Questions? Sources: United States Public Health Service. Review of Fluoride: Benefits and Risks. 1991 www.health.gov/environment/Review/Fluoride Environmental Protection Agency. Questions and Answers on Fluoride. 2011 http://water.epa.gov/lawsregs/rulesregs Centers for Disease Control and Prevention. Community Water Fluoridation: Questions and Answers. 2012 www.cdc.gov/fluoridation/fact_sheets/cwf_qa.htm MWDSLS SOP Receiving Fluorosilicic Acid at LCWTP

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