Dry running protection for pump in hazardous area
Dry running protection for pump in hazardous area
(OP)
Hi All,
I have researched our local (australian) standards with no luck, looking for some requirement for dry running protection for pumps installed in hazardous areas.
I am hoping to find a clause which specifically states you must prevent dry running a (centrifugal) pump to prevent exceeding the T-rating (wrt the hazardous area classification)
Does anyone know of any such clause in the standards? or is it left to the specific requirements of the hazardous area classification of the pump itself?
There's a similar electrical requirement which states you need to prevent running when a phase is lost (to prevent overheating)
Cheers
Michael
I have researched our local (australian) standards with no luck, looking for some requirement for dry running protection for pumps installed in hazardous areas.
I am hoping to find a clause which specifically states you must prevent dry running a (centrifugal) pump to prevent exceeding the T-rating (wrt the hazardous area classification)
Does anyone know of any such clause in the standards? or is it left to the specific requirements of the hazardous area classification of the pump itself?
There's a similar electrical requirement which states you need to prevent running when a phase is lost (to prevent overheating)
Cheers
Michael





RE: Dry running protection for pump in hazardous area
RE: Dry running protection for pump in hazardous area
I'm no expert but I was under the impression most centrifugal pumps should not run dry, and under these conditions would likely damage seals and overheat in an uncontrolled manner that may not be in the context of the kind of type testing that is done on hazardous area equipment.
Hence I would expect there is a line in a standard protection somewhere to mandate the installation of dry run protection for pump control systems to reduce the likelihood...
RE: Dry running protection for pump in hazardous area
RE: Dry running protection for pump in hazardous area
RE: Dry running protection for pump in hazardous area
I'd like to know why you have to have a code to prove you shouldn't be doing it? Provision of a low suction pressure shutdown would be very commonly included in that scenario to protect your pump, with or without a resulting fire. The only time I wouldn't do it is if the pump cost less than the pressure/shutdown switch.
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RE: Dry running protection for pump in hazardous area