silica in boiler water
silica in boiler water
(OP)
any clues as to how silica shows up in boiler water when demin supply is less than 2ppb and blow down is treated in an anion resin bed before re-entry to water circuit
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RE: silica in boiler water
RE: silica in boiler water
RE: silica in boiler water
RE: silica in boiler water
RE: silica in boiler water
There has also been a reported instance where plant workers have used silicon based compounds to seal vessel doors - which can also lead to high silica readings.
RE: silica in boiler water
[I once caught our maintenance people hooking up service water to wash down the boiler internals during an outage -- fortunately I caught them before they turned the water on -- we had an immediately impromptu class on rinsing out boilers for the entire maintenance crew...]
Double check what maintenance was done during the outage if the silica level is abnormal from other shutdowns.. If they rinse down with condensate (or demin water), did they use dedicated hoses or heavily rinse out the ones used prior to rinse down?
Again, I'd double check the regeneration procedure -- make sure the vendor knows your requirements for silica... don't take the salesman's word for it... get a copy of the procedure and have someone else knowledgeable in this field review it... do an audit of their regeneration...