Chemical Safety Flashcards
Condition of being susceptible to harm or injury
Danger
Unexpected and unwanted events occurring in laboratories
Incidents
Damages from unsafe working
Direct - 10%
Indirect - 90%
Examples of direct damages
- Lost time
- Fines and penalities
- Damages & Repair costs
- Increased Insurance Costs
- Litigation Costs and Civil Damages
Examples of Indirect Damages
- Reputation damage
- Overtime to offset production down time - Strained Employee relations
- Poor employee morale
Cause of Accidents
Unsafe Acts - 85%
Unsafe Conditions - 15%
Hazard Classification Systems
- 704 M System, National Fire Protection Assoc (NFPA)
- The US Department of Transpo (DOT)
- Globally Harmonized System of Classification and Labelling of Chemicals (GHS)
Information resource about chemical safety
Label
Safety Data Sheets (SDS)
Books and pamphlets online
In NFPA, meaning of 4,2,3,1,0 in Health Hazard
4 Deadly
3 Extreme danger
2 Hazardous
1 Slightly Hazardous
0 Normal Material
In NFPA, meaning of 4,3,2,1,0 in Fire Hazard
4 Below 73 F
3 Below 100 F
2 Above 100 F not exceeding 200 F
1 Above 200 F
0 Will not burn
In NFPA, meaning of 4,3,2,1,0 in Instability
4 May detonate
3 Shock & heat may detonate
2 Violent chemical change
1 Unstable if heated
0 Stable
OX
Oxidizer
ALK
Alkali
COR
Corrosive
W with a slash
Use NO WATER
Draw the symbol or radiation Hazard
Where is chemical handling information found?
Safety Data Sheet (SDS)
Chemicals should always be clearly labeled with…?
Name of the substance
Concentration
Date it was received
Name of the person responsible for it
The rapid oxidation of a fuel by an oxidizer
Burning
How can a fire start?
Presence of sufficient energy to sustain the chemical reaction
What must be the present in proper proportions?
Fuel and oxidizer
What state is fuel usually present?
Gaseous state
When can solvent becomes fuel for fire?
Increased temperature of solvents and increased vapor pressure
