Time-Weighted Average

Time periods which are used for workplace exposure limits (WELs), with two periods of 8-hours (long-term exposure limits - LTELs) and 15-minutes (short-term exposure limits - STELs) being commonly used.
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Tolerability of Risk

A risk management framework (abbreviated to TOR) which assesses the risks of a hazardous activity and the toleration of risk and concerns involved with the activity which an individual or organisation is willing to accept.
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Work Equipment

Any tool, including machinery, which is used for work activities.
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Working on a Slope

Slopes can be a significant hazard for the carrying out of maintenance work.
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Workplace Exposure Limit

A term defined by the Control of Substances Hazardous to Health (Amendment) Regulations 2004 (in Section 2(a)(v)) with it meaning “… the exposure limit approved by the Health and Safety Commission for that substance in relation to the specified reference period when calculated by a method approved by the Health and Safety Commission, as contained in HSE publication “EH/40 Workplace Exposure Limits 2005” as updated from time to time.”
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