(SW elements Inadequate should filtration be evaluated design or to ensure that operation. and Adequate microbial flow and removal pressure requires that Does limits are not a cartridge exceeded; the system not be PWS flowmeters used at keep and flow conditions daily restrictors exceeding its should be design installed as of specifications needed if the (flow rate, filters are not inlet pressure the designed for and pressure the maximum drop), and flow from the that the drop intake cartridge be Pressure properly the gauges installed in should be the housing installed up for which it and and was downstream designed. of the In order to cartridges to when ensure that to allow daily these monitoring conditions and recording are met, the out of pressure differential drops and to pressure trigger filter across the change outs filter bags when should be monitored limits are and recorded close to being daily and the reached. filters should be changed out when the manufacturer limits are close to being reached. The system is currently not monitoring
elements should be evaluated to ensure that flow and pressure limits are not exceeded; flowmeters and flow restrictors should be installed as needed if the filters are not designed for the maximum flow from the intake Pressure gauges should be installed up and downstream of the cartridges to allow daily monitoring and recording of pressure drops and to trigger filter change outs when limits are close to being reached. (SW and Does the PWS keep daily of the drop the and when to out Inadequate filtration design or operation. Adequate microbial removal requires that a cartridge system not be used at conditions exceeding its design specifications (flow rate, inlet pressure and pressure drop), and that the cartridge be properly installed in the housing for which it was designed. In order to ensure that these conditions are met, the differential pressure across the filter bags should be monitored and recorded daily and the filters should be changed out when the limits are close to being reached. The system is currently not monitoring manufacturer
ss_wyoming_form.docx