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 MSDSs
  --- BUT THEY ARE NOT ALL THE SAME.

3
Health and Safety Stuff Your Right (and need)
to Know

• TLVThreshold 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 TLVs
• TLV TWA TWATime 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 INSTANTANEOUSLYgt

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 individuals ability
  to escape from a dangerous atmosphere.