SWP: Chemical Hazards and Other Hazards

NFPA, National Fire Protection Association Hazard Codes

uses diamond shaped symbol, four quadrants and based on color codes and numerical ratings

Blue

Color for health

Red

Color for Flammability

yellow

Color of reactivity

white

Color of special warnings

WHMIS

legislated system for all hazardous material

Label, Safety Data Sheets and Training

What does WHMIS consists of?

Training

Most important element of WHMIS

Product Identifier, Pictogram, Signal Word, Hazard Statement, Precautionary Statement and Initial Supplier Identifier

Parts of a Supplier’s Label

Product name, Safe Handling Precautions and Reference to SDS

Parts of Workplace Label

Acute

one time exposure, short term

Chronic

Long term exposure, repeated

Insidious Chemical

accumulates and result to harmful effects

Carcinogen

chemical causing cancer in living cells

Mutagen

mutation of cells

Inhalation

via respiratory

Ingestion

via digestion system

Absorption

through skin and eyes

Injection or Parenteral

mishandling of needles

heat, oxygen and fuel

3 element of fire

Heat

source of ignition

Fuel

can burn or explode

Oxygen

the “food” and supports reaction

Flammable

room temperature less than 30 degrees

Combustible

must be heated greater then 37 degrees

Class A

Ash or combustible

Class B

found in bottles or barrel, Liquid

Class C

Electrical Circuits

Class D

flammable metals

Class K

Kitchen Fire

Water and A-B-C Dry Chemicals

Prevention of Class A

Carbon Dioxide and A-B-C Dry Chemicals

Prevention for Class B

Carbon Dioxide (halogens) and A-B-C Dry Chemicals

Prevention for Class C

Class D Dry Chemicals. yellow

Prevention for Class D

Class K dry Chemicals

Prevention for Class K

ph farther from 7

What ph is more corrosive

Acid to water, to avoid splashes

What ratio do we follow when diluting bleach and why

Compressed Gas

a physical hazard example is oxygen tank

Cryogenic

with temperature below -73

Liquid nitrogen

quickly freezing sample

Dry ice

when frozen sample needs to be transported

Electrical Hazard

when alternate current is more dangerous than direct current

Radiation

energy emitted from a source

External

burn to the tissue

Internal

damage to bone marrow and reproductive organs

Dosimetry

measures the absorbed dose accumulated from direct and indirect exposure

Retina

Hazard with laser of the scanner

Cataract

Hazard with microwaves

BSC

What should not be on with UV lamp

Noise

any unwanted sound

Decibels

measure noise