FLUORIDATION AND CORROSION

Corrosion of domestic pipes, water meters, hot water systems,
washing machines, car radiators, fire mains, valves,
and back-flow prevention equipment,
will be accelerated by fluorides…
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abc pipe cor

AFS Corrosion Denile
Original → HERE

CORROSION & FLUORIDES – OAK RIDGE LABORATORY

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David Cunningham

CORRODED STRIPDistributing fluoride EVENLY, via many thousands of  kilometres of  the complex system of trunk mains, water pipes, and control valves is a hydraulic impossibility. Readings [Fluoride concentrations] taken at various locations in the water supply system will vary. Dead-ends will often read very high. Because fluorides are corrosive, fibro mains will release asbestos, concrete lined pipes will absorb some fluoride, erode, and reset the concrete down-line during low use times (slow flow), forming partial blockages at bends and junctions. Corrosion of domestic pipes, water meters, hot water systems, washing machines, car radiators, fire mains, valves, lead soldered fittings  and back-flow prevention equipment, will be accelerated.


The concentration of fluorides in cooling towers (air conditioning) will increase due to evaporation, therefor increasing corrosion rates with GREATER risk of  

 legionnaire’s disease.  which often breeds under the corrosion.
Chlorine dioxide is an effective treatment for Legionella and biofilm at levels as low as 0.2 mg/l with minimal objections; however, it must be generated on-site and treatment cost may be a consideration.

Accelerated corrosion/rust can also result in staining of water (laundry).

Fluoride will leach various heavy metals into the water, from lead solder joints, copper, brass and plastic fittings. The risk of leaks, spills, burst water mains, and-over feeds, and subsequent political cover-ups, is historic and to be expected as occurred in Brisbane, May 2009.  – Fluoride is tasteless but can release ‘tastes’ from pipes etc.  Some of Brisbane’s old water mains contain lead, which the fluorides will release into the water.

     ♦yorkshire fittings

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SAN FRANCISCO – on 29 November 1960 a 200-foot portion of a 50-foot wide street collapsed after an almost-new water main burst. After an analysis of the pipe by Griffin-Hasson laboratories in Los Angeles, it was discovered that fluoridation chemicals had corroded the pipe, which showed a fluoride coCORRODED STRIP
Professor J B Polya, University of Tasmania, said:
Since all but the most expensive materials for the reticulation of fluoridated water (rubberised pipes or Monel metal ) react with fluorides, the concentration of fluoride at delivery points may differ greatly from concentrations ot the mixing point.
 Monel metal – an alloy of nickel and copper and other metals (such as iron and /or manganese and /or aluminium.

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Even if fluoridation gave us all the best teeth in the cemetery,
IT SHOULD BE STOPPED DUE TO THE CORROSION
DAMAGE TO WATER INFRASTRUCTURE.

pittsburgh Post july 1977
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Heading-F. induced corr. steel rebars.. →  FLUORIDE CORROSION OF STEEL REBARS 

Abstract F. Steel IndiaCORRODED STRIP

 CorrosionResistanceofNickel_ContainingAlloysinHydrofluoricAcid_

HydrogenFlourideandFlourine_443_

different consid. steelmaking...

              CORROSION & FLUORIDES – OAK RIDGE LABORATORY

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Fluoride increases the electrical conductivity of water. In general, the higher the electrical conductivity of water, the higher its ability to allow corrosion to occur to metals it contacts. Where steel pipes or fittings are connected to brass, bronze or copper fittings, pipes or tanks, an electrogenic (corrosive) action takes place in the presence of fluoridated water, between the steel and the other metals. The steel becomes anodic while the brass, bronze or copper is cathodic, and the steel corrodes. This is called bi-metallic corrosion, and it occurs whenever two different metals are electrically (mechanically) connected in the presence of an electrolyte like fluoridated water.

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