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A comprehensive set of 300 questions and answers related to hazwoper (hazardous waste operations and emergency response). It covers various aspects of hazwoper regulations, including definitions, safety procedures, personal protective equipment, and medical surveillance. Designed to help individuals prepare for hazwoper certification exams or refresh their knowledge on the subject.
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Define HAZWOPER - ✔✔Hazardous Waste Operations and Emergency Response HAZWOPER regulations apply to emergency response operations only for releases and not for threats of releases - ✔✔False The primary components of the OSHA regulation applicable to the proper management of hazardous materials are... - ✔✔29 CFR Part 1910 Define RCRA - ✔✔Resource Conservation and Recovery Act What is the regulatory citation for the HAZCOM standard? - ✔✔OSHA 29 CFR 1910. Material Safety Data Sheets are now known as... - ✔✔Safety Data Sheets (SDS) HAZCOM training must be done when... - ✔✔All of the above Define GHS - ✔✔Global Harmonization System convey health, physical, and environmental hazard information, assigned to a GHS hazard class and category - ✔✔Symbols (hazard pictograms) Each must be labeled tagged or marked - ✔✔Container If a chemical has a GHS rating of 4 it is... - ✔✔Least hazardous
If a chemical has a GHS rating of 1 it is... - ✔✔Most hazardous How many sections are there on a SDS? - ✔✔ 16 A(n) must be on hand for each hazardous chemical used. - ✔✔SDS How many mandatory sections are there on an SDS? - ✔✔ 12 SDS's must be accessible to employees during their work shift - ✔✔Readily The should specifically identify the names and organizational relationships among key personnel
Two sets of communication systems should be established: and - ✔✔Internal and external Which of the following is true about the exclusion zone? - ✔✔Eating is prohibited What must be posted conspicuously at the entrance access control points into the CRZ and/or exclusion zone? - ✔✔Health and safety procedures In order to prevent injuries at the work site, people should be trained on - ✔✔Proper operating procedures Keep cabs free of all and secure all - ✔✔Non-essential items, loose items The primary purpose of a medical surveillance program is to - ✔✔Assess and monitor a worker's health before employment as well as during the course of employment The integrity of the eardrum should be established since perforated eardrums can provide a for chemicals into the body and may preclude respirator use - ✔✔Route of entry Medical program management should encourage employees to... - ✔✔All of the above How often should a team member be examined, according to federal regulations? - ✔✔Upon entering, on a periodic basis; following appearance of symptoms that indicate exposure; and upon termination from a Hazardous Materials Team Following the OSHA Hazardous Waste Standard, the employer must maintain and preserve medical records of a worker's exposure to hazardous materials for what period of time? - ✔✔For the term of employment, plus 30 years Workers enrolled in medical surveillance programs must have medical examinations at the following times: - ✔✔All of the above
Who is required to pay for work-related medical surveillance exams? - ✔✔The employer Why is assessment of the cardiovascular system an important part of a baseline medical surveillance exam? - ✔✔Identifies people with cardiovascular risk factors--may not be permitted to use PPE including respirators The three components essential for a fire are: - ✔✔Oxygen, fuel, ignition source Flammable gases with a wide flammable range, such as hydrogen or acetylene, are than a material with a narrow flammable range - ✔✔Easier to ignite Gases and vapors that are heavier than air: - ✔✔Pose a hazard because they can displace air especially in low-lying areas A Safety Data Sheet tells us that a material has a pH of 1.2. This chemical data tells us that the material is: - ✔✔An acid Select the most correct statement relating to supplied air respirators - ✔✔They provide the best protection against respiratory hazards What three variables must be identified before air-purifying respirators can be considered for use? - ✔✔Identity of hazard, concentration, oxygen content Define PAPR - ✔✔Powered Air Purifying Respirator The most common type of supplied air respirator is the - ✔✔Self Contained Breathing Apparatus What must be present to use an air purifying respirator? - ✔✔19.5% oxygen or greater APRs are NOT approved for - ✔✔IDLH (immediately dangerous to life and health) atmospheres
The individual who uses a respirator is required to perform a to ensure that an adequate seal is achieved each time the respirator is put on - ✔✔User seal check is the governing regulation that enforces respirators to be approved prior to their use - ✔✔OSHA Anyone entering a hazardous waste site must be against potential hazards - ✔✔Protected OSHA requires a written program for selection and use of respirators in - ✔✔ 29 CFR 1910. Knowing the signs and symptoms of and how to prevent it is important to the worker because of the PPE they are required to wear - ✔✔Heat stress The PPE program should be reviewed at least - ✔✔Annually The EPA level of protection which provides the highest degree of respiratory and skin protection against gases and vapors is - ✔✔Level A The primary difference between level A and Level B PPE is: - ✔✔Splash protection When using Level C PPE: - ✔✔You must wear an air-purifying respirator should be worn when the airborne contaminants are known, the concentrations are measured and the requirements for using air-purifying respirators are met - ✔✔Level C All chemical protective suits should be inspected prior to their use and ideally on a maintenance program - ✔✔Monthly is the process by which a chemical dissolves in and/or moves through a protective clothing material - ✔✔Permeation
is the loss of or change in the fabric's chemical resistance or physical properties - ✔✔Degradation Permeation of PPE is affected by: - ✔✔All of the above When planning an SCBA-assisted work mission, the following variables should be considered, and work actions and operating time should be adjusted accordingly: - ✔✔All of the above Upon finishing shifts, workers must replace body fluids by drinking ample to prevent dehydration - ✔✔Water A qualified should be consulted if a radiation hazard exists - ✔✔Health physicist Wearing chemical protective clothing (CPC) prevents what route of exposure to hazardous materials? - ✔✔Skin Personnel should be able to their PPE - ✔✔Upgrade and downgrade Individuals should always perform on their PPE - ✔✔Maintenance Chemical suits must be before use - ✔✔Inspected If your urine output color is dark yellow what should you do? - ✔✔Drink more water Pick the best treatment for heat stress - ✔✔Water occurs when fluid loss causes blood flow to decrease in vital organs - ✔✔Heat exhaustion is a life threatening situation, because the body has lost its ability to cool itself - ✔✔Heat stroke
During removal of contaminated clothing, personnel may contact contaminants on their - ✔✔Clothing or inhale them should be instituted immediately without considering decontamination - ✔✔Life-saving care requires prompt treatment to prevent irreversible damage or death - ✔✔Heat stroke Protective clothing and respirators help prevent the wearer from becoming - ✔✔Contaminated There are two primary types of decontamination methods: - ✔✔Physical and chemical Chemical removal of surface contaminants can be accomplished by dissolving them in a - ✔✔Solvent tools are difficult to decontaminate because they absorb chemicals. - ✔✔Wooden : solidifying liquid or gel contaminants can enhance their physical removal - ✔✔Solidification : the smaller the size of the contaminant molecule the greater it will absorb into the protective clothing material - ✔✔Contaminant molecule size : contaminants present in a gaseous or liquid state will absorb faster into protective clothing than those in a solid state - ✔✔Contaminant physical state temperatures will result in faster permeation of chemicals through protective clothing - ✔✔Higher When decontaminating items, it's important to remember that many hazardous substances or chemicals
are very effective in controlling spills and aiding in decontamination - ✔✔Absorbants Exercise in handling drums that are not intact and tightly sealed - ✔✔Extreme caution As a precautionary measure, personnel should assume that unlabeled drums contain until their contents are characterized - ✔✔Hazardous material The appropriate procedures for handling drums depend on the - ✔✔Drum contents may occur during handling of drums and other hazardous waste containers - ✔✔Accidents If material is noted at the neck of any bottle, handle it as a shock-sensitive waste - ✔✔Crystalline Lab packs have material in them for cushioning and containment of free liquids - ✔✔Absorbent If a drum containing liquid is too unstable to move because it may rupture, what should be done? - ✔✔Transfer contents to a structurally sound drum A bulging drum should be considered - ✔✔Under pressure The goal of is to obtain the data necessary to determine how to safely and efficiently package and transport the wastes for treatment and/or disposal - ✔✔Characterization Which government agency regulates transportation? - ✔✔Department of Transportation (DOT) When possible, materials should be characterized using an - ✔✔Onsite laboratory Please select the best answer for bulking - ✔✔Mixing of characterized wastes
What time of wood is typically used in timber shoring? - ✔✔Oak The has overall responsibility for the safety of all persons involved with entry operations into confined spaces under his or her control - ✔✔Supervisor The continuously observes authorized entrants working in a confined space - ✔✔Safety attendant The ensures the conditions of a confined space entry permit are met - ✔✔Supervisor The must be trained to recognize hazardous conditions before they happen - ✔✔Safety attendant According to OSHA, a confined space must have at least in vertical height - ✔✔4ft Fatalities in confined spaces have resulted from - ✔✔All of the above Confined spaces can be - ✔✔Enclosed or open tops All confined spaces must be identified and classified as either non-permit-required confined spaces or
What must you have prior to entering a confined space? - ✔✔Confined Space Entry Permit Other than a confined space entry permit, what else must you have prior to entry? - ✔✔Communications Training be provided for all personnel associated with a confined space entry - ✔✔Must For rescue operations, the rescue line should pass a - ✔✔2,000 pound test If the meter reading is still above of the LEL, the confined space must be cleaned before entry is permitted - ✔✔10% Two factors that can cause an atmosphere to become flammable are - ✔✔Oxygen and flammable components Define LEL - ✔✔Lower Explosive Limit devices permit employees to work safely on de-energized equipment without fear that the devices will be accidentally moved - ✔✔Lockout/Tagout Portable electric tools used in a confined space must be protected by a - ✔✔Ground fault circuit interrupter Along with other equipment, a must be worn when making a top entry into a confined space
Upon completion of site characterization, activities that must be implemented include: - ✔✔All of the above Site characterization includes: - ✔✔All of the above Site characterization is done to: - ✔✔Assess hazards at the waste site is the study of chemical toxicity - ✔✔Toxicology Humans and other living animals in their response to any exposure to a chemical substance - ✔✔Vary are tiny particles produced from heating, volatilization and condensation of metals - ✔✔Fumes Define HAZCOM - ✔✔Hazard Communication is defined as how the body handles poison - ✔✔Toxicokinetics Exposure to a hazardous substance can occur in two ways: - ✔✔Directly or indirectly The most common toxic dose in the work environment comes through: - ✔✔Inhalation is a one time or an infrequent exposure to a high concentration of a substance - ✔✔Acute A synergistic effect is considered to be - ✔✔ 2 + 2 = 6 An additive effect is considered to be - ✔✔ 2 + 2 = 4 Define PEL - ✔✔Permissible exposure limit
Define TWA - ✔✔Time-weighted average The NFPA 704 - M system ("hazard diamonds") identifies the hazards of materials in: - ✔✔Reactivity, health, and flammability The white section ("home plate") of the NFPA 704 - M Hazard Diamond provides information on: - ✔✔Special hazards The blue section of the NFPA sign designates which hazard? - ✔✔Health Define JSA - ✔✔Job Safety Analysis are those that cause physical injury, such as by fire or explosion - ✔✔Physical hazards or low-lying areas are particularly vulnerable to oxygen deficiency - ✔✔Confined spaces DOT recognizes ____ subcategories of explosives - ✔✔ 6 Work around large equipment often creates excessive noise. The effects of noise can include: - ✔✔All of the above Snakebites and poison ivy are considered to be: - ✔✔Other environmental hazards means inflammation of the liver - ✔✔Hepatitis means to treat all blood and most body fluids as if they were contaminated with the HBV or HIV viruses - ✔✔Universal precautions
The of different types of materials is a potential hazard at any waste site - ✔✔Mixing If there is an ignition source present, hydrogen gas will - ✔✔Explode The primary hazard of flammable is the physical hazard of fire or explosion - ✔✔Liquid solvents The ignition point is the temperature that the vapor must reach to - ✔✔Ignite The minimum concentration of flammable liquid vapor in air necessary for a mixture to ignite is called the - ✔✔Lower explosive limit An is, by chemical definition, "any material that will gain electrons during a chemical reaction" - ✔✔Oxidizer not only mix oxides and flammable components but also readily decompose if subjected to friction, heat, shock, or contamination - ✔✔Organic peroxides The hazard most likely to be encountered in incidents involving oxidizers is that the oxidizer combustion - ✔✔Intensifies Oxygen is by a cooling process - ✔✔Liquefied OSHA defines as any substance that will spontaneously decompose, polymerize, or self-react under conditions of shock, temperature, or pressure - ✔✔Unstable Water reactive metals tend to be soft metals that have melting points - ✔✔Low Treat unstable materials as until they are proven otherwise - ✔✔Explosives
hazardous materials exist as liquids or crystalline solids - ✔✔Unstable Which of the following forms of radiation will generally not penetrate intact skin, but can be a serious hazard if inhaled? - ✔✔Alpha Chronic doses are amounts of radiation over a long period of time, such as our normal daily exposures over our lifetimes - ✔✔Small Beta particles can be stopped by - ✔✔Aluminum foil can by stopped by lead - ✔✔Gamma rays is a term which describes how sensitive a given cell is to radiation damage - ✔✔Radiosensitivity refers to the way particles and rays radiate from their source at speeds up to that of light - ✔✔Radiation Any particles or rays given off (radiate) from a source that produces ionization is called - ✔✔Ionizing radiation are important to protect from radiation - ✔✔Time, distance, and shielding There are 2 types of sampling methods. What are they? - ✔✔Area and personal instruments utilize instantaneous or grab-type samples collected over brief periods of time - ✔✔Direct-reading Workers need to be familiar with the different types of they will be using on the work site - ✔✔Air monitoring equipment