by Tony Watson, CIH, CSP | Industrial Hygiene
First, a little background information… As ordered by the Third Circuit Court of Appeals, OSHA published a final rule for hexavalent chromium. The final rule was issued February 28, 2006. The proposed rule, published in August 2004, indicated an 8-hour time-weighted...
by Tony Watson, CIH, CSP | Industrial Hygiene
Ventilation for Acceptable Indoor Air Quality ASHRAE Standard 62 is and has been a consensus standard that provides designers of buildings and mechanical ventilation systems guidance on ventilation for acceptable indoor air quality. The new standard contains a number...
by Tony Watson, CIH, CSP | Industrial Hygiene
Ventilation for Acceptable Indoor Air Quality This article is the second installment of our Review of ANSI/ASHRAE Standard 62.1-2004. The first installment reviewed changes in the use of carbon dioxide as an indicator of indoor air quality. The ANSI/ASHRAE Standard...
by Tony Watson, CIH, CSP | Industrial Hygiene
Ventilation for Acceptable Indoor Air Quality This article is the third installment of our Review of ANSI/ASHRAE Standard 62.1-2004. The new ANSI/ASHRAE Standard 62.1-2004 Ventilation for Acceptable Indoor Air Quality incorporates a number of significant changes to...
by Tony Watson, CIH, CSP | Industrial Hygiene
Occasionally questions arise concerning the adjustment of occupational exposure limits for work shifts exceeding the traditional eight-hour work day. Since most of the regulatory and recommended exposure limits are based on the eight-hour workday, the effect of...
