Final Flashcards
What is the hazardous waste title?
HAZWOPER 29 CFR 1910.120
What does section a in the hazwoper regulations cover?
Who is covered, How they are covered, Key definitions
What does sections b-o in the hazwoper regulations cover?
The regulation address employer responsibilities at uncontrolled hazardous waste sites.
What does section p in the hazwoper regulations cover?
Treatment, Storage and Disposal (TSD) Facilities
What does section q in the hazwoper regulations cover?
Emergency Response to Hazardous Substance Releases
What does section e in the hazwoper regulations cover?
Hazwoper training
What types of workers are covered in hazwoper regulations?
General Site Workers, Occasional site workers, Workers at fully characterized sites, Supervisors
What are the 7 primary clues to hazardous materials identification?
Papers (MSDS, Bill of Lading, Shipping Papers…), Container shapes/types, Placards/labels, Detection Equipment, Markings/colors, Location, Senses
What is the regulation tag for the hazardous material diamond?
NFPA 704 M
What are the 4 sections on a NFPA hazardous material diamond?
Blue stands for health, Red stands for Flammability, Yellow stands for reactivity, and White is for special hazards (ex. ox=oxidizing agent & W=water reactive). All diamonds (but white) uses a 0-4 numbering system where 0=no hazard and 4 is very dangerous/very unstable
What are the parts of a DOT placard?
Background color, hazard symbol, diamond shape, hazard class number, and 4 digit ID number
What are the 6 DOT placard colors and what do they mean?
Orange=explosive, yellow=oxidizer, Red=flammable, white=health hazard, blue=water reactive, green=nonflammable gas
What is a class 1 hazardous material
Explosives
What is a class 2 hazardous material
compressed gases
What is a class 3 hazardous material
flammable liquids
What is a class 4 hazardous material
flammable solids
What is a class 5 hazardous material
oxidizers
What is a class 6 hazardous material
toxic materials
What is a class 7 hazardous material
radioactive materials
What is a class 8 hazardous material
corrosives
What is a class 9 hazardous material
miscellaneous
What does LEL mean?
Lower Explosive Limit: lowest percentage of fuel in air that will support combustion
What does UEL mean?
Upper Explosive Limit: highest percentage of fuel in air that will support combustion
What is toxicology?
the study of the harmful effects of chemicals and other physical phenomena on biological systems and how certain substances cause these disruptions
What is an Exposure limit?
The levels of exposure established by studies that determine “safe” levels to enable workers to maintain a margin of safety when working in contaminated atmospheres.
What is a LD50?
Lethal Dose 50% or median lethal dose: quantity of chemical estimated to be fatal to 50% of organisms under stated conditions of the test
What is a threshold dose?
a does below which no effect or response is observed
What does NOEL mean?
No observed effect level: highest dose level of a chemical that causes no observable adverse effect in the test organism
What does LOEL mean?
lowest observed effect level: lowest dose level of a chemical that causes an observable adverse effect in the test organism
What is the difference between a toxic and a highly toxic material?
A toxic material has a LD50 less than 500 mg/kg or LC50 below 2000 ppm. A highly toxic material has a LD50 less than 50 mg/kg or LC50 below 200 ppm.
What does TWA stand for?
Time weighted average
What does PELs stand for?
Permissible Exposure Limits
What does STEL stand for?
Short Term Exposure Limits
What does IDLH stand for?
Immediately Dangerous to Life and Health
What does TLVs stand for?
Threshold Limit Values
What does BEIs stand for?
Biological Exposure Indices?
What are the 5 factors to consider when someone is exposed?
Concentration of the chemical, Duration of exposure, Uptake Rate, Chemical interactions- additive, synergistic,
antagonistic, Route of Entry
What are the 4 routes of entry?
Inhalation, Absorption, Ingestion, Injection
What is the difference between Acute and chronic exposure?
Acute exposure is a brief period of contact with a substance (like a few seconds or hours). Chronic exposure is continuous or repeated contact with a substance over months or years.
What is the difference between a local and systemic effect?
A local effect occurs at the site of contact with a substance. A systemic effect occurs in other parts of the body after a substance has been absorbed and distributed
What is PPE?
Personal Protective Equipment: Equipment designed to protect employees from serious workplace injuries or illnesses resulting from contact with chemical, radiological, physical, electrical, mechanical, or other workplace hazards.
What are the 3 CPC failure mechanisms?
Degradation, penetration, and permeation
What is the difference between penetration and permeation?
Penetration is the transport of materials through openings in
the suit. Permeation is the passage of a chemical through intact material at the molecular level
When should Level A PPE be worn?
Level A protection should be worn when the highest level of respiratory, skin, eye and mucous membrane protection is needed.
What PPE should be worn for Level A?
SCBA, fully encapsulating chemical suit, inner and outer gloves, steel toe chemical boots
When should Level B PPE be worn?
Level B protection should be selected when the highest level of respiratory protection is needed, but a lesser level of skin and eye
protection.
What PPE should be worn for Level B?
SCBA, Chemical resistant clothing (chemical suit, overalls, etc.), inner and outer gloves, and steel toe chemical boots
When should Level C PPE be worn?
Level C protection should be selected when the type of airborne substance is known, concentration measured, criteria for using air-purifying respirators met, and skin and eye exposure is unlikely. Periodic monitoring of the air must be performed.
What should be worn for Level C PPE?
Gas-mask, Chemical resistant clothing (chemical suit, overalls, etc.), inner and outer gloves, and steel toe chemical boots
When should Level D PPE be worn?
It should not be worn on any site where respiratory or skin hazards exist.
What should be worn for Level D PPE?
primarily a work uniform and is used for nuisance contamination
only, It requires only coveralls and safety shoes/boots
What are the two categories of hazard assessment?
-health hazards (carcinogens, toxins, etc.)
-physical hazards (flammable, explosives)
What is a hazard assessment?
the process of determining the risk of a particular material and what protective action should be taken
What is the hierarchy of controls from most to least effective
Elimination, substitution, engineering controls, administrative controls, and PPE
What are the major groups of respiratory hazards?
-Particulates (dusts, fumes, mists)
-Gases and vapors
-Combinations of particulates and gases
-Oxygen deficient atmospheres
-High or low temperature areas
What are the types of respiratory hazards?
-Dusts, fumes, mists, gases, and vapors
What are dusts?
solid particles in the air created through operations such as grinding, sanding, or drilling
What are fumes?
particulates create through the heating and cooling of solid materials (welding)
What are mists?
suspended liquid droplets in the air (spraying)
What are gases?
non-particulate forms of matter that move freely through the air (at ambient temps)
What are vapors?
similar to gases but form when liquid evaporates and the liquid portion enters the air
What is a normal percentage of oxygen and what is considered oxygen deficient?
20.9% and under 19.5%
What are the 6 things that air monitoring is searching for?
-Oxygen deficient/enriched atmospheres
-combustible/explosive atmospheres
-toxic atmospheres
-corrosivity
-radioactive
-biological hazard
