| Document ID (ISN) | 58763 |
| CIS number |
92-1643 |
| ISSN - Serial title |
0002-8894 - American Industrial Hygiene Association Journal |
| Year |
1992 |
| Convention or series no. |
|
| Author(s) |
O'Brien D., Froehlich P.A., Gressel M.G., Hall R.M., Clark N.J., Bost P., Fischbach T. |
| Title |
Silica exposure in hand grinding steel castings |
| Bibliographic information |
Jan. 1992, Vol.53, No.1, p.42-48. Illus. 20 ref. |
| Abstract |
Exposure to silica dust was studied in the grinding of castings in a steel foundry. Approximately one-third of the personal samples exceeded the National Institute for Occupational Safety and Health (NIOSH) recommended exposure limit for crystalline silica. The casting cleaning tools with the largest wheels were shown to be the major sources of dust exposure. Existing dust control consisted of the use of downdraft grinding benches. The size of the casting precluded working at a distance close enough to the grates of the downdraft benches for efficient capture of the grinding dust. In addition, measurements of air recirculated from the downdraft benches indicated that less than half of the respirable particles were removed from the contaminated airstream. The study endorsed the following control options: the use of mold coatings, which minimise sand burn-in on the casting surface; application of high-velocity, low-volume exhaust hoods; the use of a non-silica molding aggregate such as olivine. |
| Descriptors (primary) |
dust control; cleaning of castings; foundries; respirable dust; exposure evaluation; silica |
| Descriptors (secondary) |
abrasive wheels; air sampling; exhaust ventilation; mechanical ventilation |
| Document type |
D - Periodical articles |
| Country / State or Province | USA |
| Subject(s) |
Metal production and metalworking
|
| Broad subject area(s) |
Chemical safety
|
| Browse category(ies) |
Exposure evaluation
Foundries, metalcasting and forging operations
|
