Walk-Through Survey Report of Kerr-McGee Chemical Corporation, Henderson Plant, Henderson, Nevada, Report No. IWS-107-15.
NIOSH 1981 Jan:15 pages
A walk through survey was conducted at the Henderson Facility of the Kerr McGee Chemical Corporation (SIC-2819) located in Henderson, Nevada for the purpose of monitoring employee exposure to manganese (7439965). The facility occupies 350 acres in a large manufacturing complex built in 1944. Manganese-dioxide (1313139) has been produced there since the early 1950s. The facility employees 212 production workers, of which 34 are engaged in manganese-dioxide production. There are three work shifts per day in this area, with 18 workers on the day shift and the remaining 16 on the other two shifts. The manganese-dioxide product is suitable for use in dry cell batteries. Airborne manganese levels were generally very low, with the highest observed level being 0.408mg/m3 on the catwalk to the lime feeder. Sampling for total airborne and respirable particulate material showed levels far below those observed for airborne manganese even when samples for particulate material and manganese were collected side by side. Much of the collected material had not remained on the sampler filter but had been dispersed on the inside surface of the cassette. Six of seven samples collected during bag filling and palletizing operations were below the 5mg/m3 level. The operators in this area were using respiratory protective equipment. The exhaust ventilation system was capable of controlling airborne levels of manganese-dioxide below the OSHA standard of 5mg/m3. Modifications of the existing slot hood and relocation of the wall mounted fan would probably decrease the airborne concentrations further during bag filling operations. It was recommended that this facility not be included in a NIOSH study of occupational exposure to manganese.
NIOSH-Author; NIOSH-Survey; Field-Study; IWS-107-15; Region-9; Oxides; Chemical-manufacturing-industry; Manganese-compounds; Chemical-industry-workers; Battery-manufacturing-industry;
NTIS Accession No.
Division of Surveillance, Hazard Evaluations, and Field Studies, NIOSH, U.S. Department of Health and Human Services, Cincinnati, Ohio, Report No. IWS-107-15, 15 pages, 3 references