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link 10.01.2009 2:58 |
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Subject: Material safety data sheet Может, кто-нибудь сталкивался со следующими сокращениями в сертификате безопасности материала (на присадки к диз.топливу): OSHA PEL TWA |
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OSHA - Occupational Safety & Health Administration (USA) ....8-hour total weight average (TWA) permissible exposure limit (PEL).. "TWA is the employee's average airborne exposure in any 8-hour work shift of a 40-hour work week which shall not be exceeded" Occupational exposure limits (OELs, TLVs, PELs, etc.) can be expressed in parts per million (PPM) only if the substance exists as a gas or vapour at normal room temperature and pressure. This is why exposure limits are usually expressed in mg/m3. National Toxicology Program (NTP) Programme of the International Agency for Research on Cancer (IARC) |
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