Health and safety Stuff

1. Health and safety Stuff A Couple of Definitions

2. Health and Safety Stuff: Your Right (and need) to Know • MSDS: Material Safety Data Sheet • The Material Safety Data Sheet (MSDS) is a summary of the important health related facts about a chemical used in our work or home environment. • The purpose of the MSDS is • “to inform industrial purchasers and users of hazardous chemicals of the reasonably foreseeable physical and chemical hazards that may arise from the use of those chemicals.” • Most products we use in our day to day work and lives have MSDS • There is a generally accepted format for MSDS’s --- BUT THEY ARE NOT ALL THE SAME.

3. Health and Safety Stuff: Your Right (and need) to Know TLV:Threshold Limit Value • TLV is the concentration of material to which a person can be exposed Day after Day without adverse effects • There three Kinds of TLV’s • TLV – TWA: TWA=Time weighted Average --- for example an average over a 40 hour work week or over an 8 hour day • TLV-STEL: The max concentration for 15 min exposures at most 4 times a day with at least 1 hour between exposures • TLV-C: Ceiling Limit – NEVER EXCEED THIS LIMIT EVEN INSTANTANEOUSLY>

4. Health and Safety Stuff: Your Right (and need) to Know • Immediately Dangerous to Life and Health (IDLH) • “An atmosphere that poses immediate threat to life, would cause irreversible adverse health effects or would impair an individual’s ability to escape from a dangerous atmosphere.”