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flashing ductile iron pipe????
2

flashing ductile iron pipe????

flashing ductile iron pipe????

(OP)
hi friends :

i have got ductile pipe  new network system and i want flashing this system by calcium hypochlorite to kill bacteria .

how much concentration of hypochlorite i must used without effect of pipe material and for what period of time ????
any articles will be appressiate.


i am gratefull for anyone help me

best regrds

RE: flashing ductile iron pipe????

2
From memory AWWA C651, "Disinfecting Water Mains" requires a 24-hour period where the Free Chlorine concentration must be at least 25mg/l at the start and no less than 10 mg/l after the 24-hour period.  It also requires two P/A coliform tests.

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