Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Application of occupational exposure limits to unusual work schedules.

Authors
Hickey-JL; Reist-PC
Source
Am Ind Hyg Assoc J 1977 Nov; 38(11):613-621
NIOSHTIC No.
00173653
Abstract
A model for applying occupational exposure limits to unusual work schedules based on the OSHA regulatory standards was described. Body burden curves for normal and nonnormal exposures had characteristic peaks, residuals, and average body burdens. The model involved adjusting the occupational exposure limits for industrial air contaminants to unusual work schedules using peak body burden to predict equal protection. The equations for peak body burden were fitted to a one compartment model incorporating biological uptake and excretion mechanisms. The model was tested for a normal work week, a work week of four 10 hour days, a work week of three 12 hour days, and a single 40 hour shift per week. The peak body burden for substances with short half lives was attained quickly such that no modification of the OSHA limits was necessary for modified work schedules. The adjustment factor was proportional to the number of exposure hours for substances with long half lives in the body. The adjustment factor varied with the half life for substances of intermediate half lives. The model was applicable to particulates, reactive gases and vapors, and inert gases and vapors. The authors note that the predictive power of the model is limited by the limitation of the one compartment analysis.
Keywords
NIOSH-Publication; NIOSH-Grant; Worker-health; Regulations; Occupational-hazards; Workplace-studies; Air-contamination; Respiratory-irritants; Occupational-exposure; Airborne-dusts; Air-sampling
CODEN
AIHAAP
Publication Date
19771101
Document Type
Journal Article
Funding Amount
514394.00
Funding Type
Grant
Fiscal Year
1978
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-T01-OH-00099
Issue of Publication
11
ISSN
0002-8894
Source Name
American Industrial Hygiene Association Journal
State
NC
Performing Organization
Environmental Sciences & Engr Univ of North Carolina Dept of Environ Scis & Engr Chapel Hill, NC 27514
TOP