Document JyQykDgkm2Q1p1Ek2L8JkEEO
i r.i-yton * Associ-Mf*
Onrman of Martsnnen Management Syuemi. ir*.
25711 Southfwtd Road. Southfield. Michigan <8076 Tetaphoos: 313 352 3120
November 1, H72
Mr. Gerald t. Dewitt Chief, Industrial Hygienist OVEMS-COJLKIMC riSERCLAS CORPORATION Flbargl&s Tower* Toledo, Ohio 43459
Deer Mr. Davitt:
Presented herewith ere three copies of e report summarising the results of the Industrial hygiene survey conducted et your pliat in Jerlin, New Jersey on Septenber 14, 1972 by Mr. Paul Carlson and the undersigned.
The following contents are based on observations and measirtitoti made by field team during the survey and repre sent their overall impressions of the plant. Particular areas in vhlch a need exists for either ieplenencatlon of corrective measures or further in/astlgation have been noted.
1. Comparison of noise measurements with current Occupational Safety and Health standards indi cate that a potential exists for overexposure of workers to noise near the SID cylinders (ses Tsbl* IV). A. comprehensive hearing con servation program should be imp lamented.
2. Total dust concentrations ranged from 2.2 to 64.4 mg/M^ in those areas of the plaut studied. The Occupational Safety and Health standard of 15 mg/K^ for total nuisance dust concentra tions was exceeded at most work stations (see Table I).
.3 The concentrations of airborne fibrous matsrial greater than 5 micrometers in length were found to be less than 5 fibers per milli liter. One of the five saaplce evaluated for fiber concentration Indicated a level in excess of the 2 flbers/ml standard Intended for use by 1976.
Kr. Ceraid E. Devitt OVENS-CORNINC FI1ERCLAS CORE.
Page Two 11/1/72
4. The exposure* of batch floor operators to eliieeous dust were found to be within acceptable Halts based on ths determina tion of free silica content of the dust (see Table II).
5. A single short-term sample collected during a voiding operation indicated concentra tions of iron.oxide of 16.1 mg/H^ and total dust of 40.0 *g/H^. Although these results may not be representative of the vorfceri1 t-hour time-weighted average exposure, thev do indicate a need for control of dusts and femes generated by welding.
f. Comparison of heat stress messurtmants made at tha SID cylinder tree with the current proposed ACCIR threshold limit value (VgGT index) indicates that a Z5Z work - 75Z rest regiment is appropriate for the light work leads vhlch characterise this area.
7. Tha exhaust fan on tha number 4 pre-hardner ventilation hood was not working allowing hot gases snd mist to escape into the adja cent work area. It was understood that tha lubricant used for the shaft periodically dries out or degrades causing tha shaft to "frame." A lubricant which la compatible vith the gases and mists evolved by this operation should be used.
Very truly yours.
Industrial Hygienist RLV/c
TABLE B -5 -1
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