Technical Exposure Limits

Germany TRK (technical exposure limit) 2mgm inhalable fraction of the aerosol airways and skin sensitizer for Western red cedar. 

The German system of Maximale Arbeitsplatzkonzentrationen (MAK, Maximum Concentration Values in the Workplace) and Technische Richtkonzentrationen (TRK, Technical Exposure Limits) [16]. 

Significance of the predicted impacts should be assessed in the process of impact evaluation or interpretation. At this stage the health risk estimates (quantitative and qualitative) are analyzed in terms of their acceptability against relevant regulatory and/or technical criteria environmental quality standards or exposure limits. 

AIRBORNE EXPOSURE LIMIT (REL) The AEL for HD is 0.003 mg/m3 as proposed in the USAEHA Technical Guide No. 173, Occupational Health Guidelines for the Evaluation and Control of Occupational Exposure to Mustard Agents H, HD and HT. No individual should be intentionally exposed to any direct skin or eye contact. 

AIRBORNE EXPOSURE LIMIT (AEL) The suggested permissible airborne exposure concentration for GA for an 8-hour workday or a 40 hour work week is an 8 hour time weight average (TWA) of 0.0001 mg/m3 (2 x 10-5 ppm). This value is based on the TWA of GA as proposed in the USaEHA Technical Guide 169, Occupational Health Guildelines for the Evaluation and Control of Occupational Exposure to Nerve Agents, GA, GB, GD, and VX. To date, however, the Occupational Safety and Health Administration (OSHA) has not promulgated a permissible exposure concentration for GA. 

National Occupational Exposure Survey National Occupational Hazard Survey National Priorities List National Research Council National Technical Information Service National Toxicology Program Occupational Safety and Health Administration permissible exposure limit... 

After assessing the technical literature, a summary document (Figure 5) of the biological effects data is prepared for review by CACPH Advisory Panel and TMAC. This review results in a recommendation to draft a Toxic Material Advisory report which contains an interim exposure limit in additional pertinent health and safety requirements. The draft Toxic Material Advisory report is then reviewed by independent consultants. These consultants attend a 1-2 day meeting to evaluate the document and the appropriateness of the interim exposure limit. The independency of the review meeting is assured by having one of CACPH Advisory Panel member chair the committee to ensure that the review process proceeds in an orderly manner. CACPH s staff participation at this meeting is only to provide overview on the information that is available for review. 

WHO (World Health Organization). 1984. Sulfur dioxide. Pp. 115-150 in Recommended Health-Based Occupational Exposure Limits for Respiratory Irritants. WHO Technical Report Series 707. Geneva World Health Organization. 

Several steps have been taken towards a more harmonised methodology within the more general area of risk assessment of chemicals. The EU has proposed a number of principles for assessment of risks to man and the environment in directive 93/67/EEC (EC 1993) as well in the Technical guidance documents in support of directive 96/67/EEC on risk assessment (EC 2003), to further common practices in risk assessment. A harmonisation of national exposure limits is to be expected, since the EU sets both binding and indicative OELs for each member state to consider in its national regulations. However as noted by Vincent (1998) a full international harmonisation of OELs is unlikely and may not even be the most... 

USACHPPM (US Army Center for Health Promotion and Preventive Medicine) (2000). Evaluation of airborne exposure limits for sulfur mustard occupational and general population exposure criteria. Aberdeen Proving Ground, MD. Technical Report 47-EM-3767-00. 

MacEwen, J.D.,and E.H. Vernot. 1985. Investigation ofthe 1-hour emergency exposure limit of J P-5. Pp. 137-144 in Toxic Hazards Research Unit Annual Technical Report 1985. AAMRL-TR-85-058. Aerospace Medical Research Laboratory, Wright-Patterson AFB, OH. 

The Navy s Occupational Safety and Health Standards Board has considered the potential for storage and operation of the fueled vehicles in the ship s cargo holds to be hazardous to naval service personnel exposed to fuel vapors during the servicing of these vehicles or while working in their vicinity. To protect personnel from exposures to toxic concentrations of fuel vapors, the board recommended an interim 8-hr time-weighted average (TWA) permissible exposure limit (PEL) of 350 mg/m3 and a 15-min short-term exposure limit (STEL) of 1,800 mg/m3 for vapors from all three fuels. Those interim exposure limits were based on the board s review of the manufacturers technical documentation and the National Institute of Occupational Safety and Health s recommendations for maximum exposure to refined petroleum solvents. 

During the past decades, concern about the hazards of toxic metals and their compounds for human health and the environment has increased worldwide. In many countries, legislative and administrative measures have been taken to reduce environmental pollution and to prevent adverse effects resulting from exposure to toxic substances in the environment. The legislation and administrative procedures for the control of toxic metals and their compounds are largely based on technical standards, limit values and guideline values. 

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