Review of Published Experimental Calibrations Performed on the 10-Millimeter Nylon Cyclone

摘要

In 1970, the American Industrial Hygiene Association (AIHA) published a Guide for Respirable Mass Sampling. The Guide recommended that a flow rate of 1.7 liters per minute be tentatively adopted for respirable mass samplers employing the Dorr-Oliver 10 mm nylon cyclone. Because calibration data on the 10 mm nylon cyclone was conflicting, provisions were made for revising the Guide when additional data became available. This report presents a review of all the investigative work that has been conducted on the calibration of the 10 mm Dorr-Oliver nylon cyclone for the purpose of recommending an operational flow rate for the 10 mm cyclone that will provide size-selection characteristics that most closely approximate the Atomic Energy Commission (AEC) respirable dust criterion. The significant conclusions from this review were that the amount of experimental scatter in all of the investigations precludes the recommendation of any flow rate to within a tolerance greater than +-0.2 liter per minute and the AEC respirable dust criterion will be more closely approximated when the 10 mm nylon cyclone is operated at a flow rate of 2.0 liters per minute. (ERA citation 08:049806)