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HAZWOPER PRACTICE EXAM Questions
& Answers 100% Correct Latest Versions
2024 GRADED A+
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
The purpose of a site control program is to... - ✔✔All of the above Site control zones at a hazardous materials incident are established primarily... - ✔✔All of the above The level of site control needed depends on... - ✔✔All of the above The serves as a central source of information about the site and can help personnel plan and organize activities - ✔✔Site map The Safety Officer is normally found in the - ✔✔Contamination Reduction Zone or Support Zone The support zone typically has the following - ✔✔All of the above What is a Hot Line? - ✔✔A place that divides the contaminated area from all other zones The boundary between the support zone and the CRZ is called the - ✔✔Contamination control line Which of the following is not true about the support zone? - ✔✔Should be as close to the exclusion zone as possible An external communication system between onsite and offsite personnel is - ✔✔Necessary Verbal communication at a site can be by onsite background noise and the use of PPE - ✔✔Impeded 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
A cartridge with a black band on its outside indicates it can be used for protection against - ✔✔Organic vapors In an atmosphere which is immediately dangerous to life and health, your best respiratory protection is:
- ✔✔Self-contained, pressure demand breathing apparatus Pressure demand SCBAs have a protection factor of: - ✔✔ 10000 The two types of entry and escape SCBAs are - ✔✔Open circuit and closed circuit When should you wear an SCBA? - ✔✔When an air-purifying respirator protection factor is not sufficient for the chemical concentration in the work area is determined experimentally by measuring face piece seal and exhalation valve leakage - ✔✔The Protection Factor (PF) An air purifying respirator provides than a supplied air respirator - ✔✔Less protection (PF)(PEL or TLV) = - ✔✔Maximum Value Limit Define IDLH - ✔✔Immediately dangerous to life or health The two types of respirator fit testing are: - ✔✔Qualitative, quantitative What are the two quick checks for wearing a respirator? - ✔✔Positive, negative 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
Who is responsible for purchasing PPE? - ✔✔Employer Which one of the following is a Class B helmet? - ✔✔Impact, penetration resistance, and electrical protection For chemical spills, you would use gloves for clean up. - ✔✔Rubber All personnel and equipment leaving the hazardous waste site must be to prevent the spread of hazardous materials offsite - ✔✔Decontaminated The is part of the Site Health and Safety Program. - ✔✔Decontamination plan might be either on the surface of the PPE or may have permeated the PPE material - ✔✔Contaminants You should always try to contact with contaminants - ✔✔Minimize A method for determining the effectiveness of surface decontamination is - ✔✔Swipe testing The controls access into and out of the Exclusion Zone and confines decontamination activities to a limited area - ✔✔Personal decontamination station The each person does determines the potential for contact with hazardous materials - ✔✔Work Define CRZ - ✔✔Contamination Reduction Zone 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
- ✔✔Do not leave visible traces are very effective in controlling spills and aiding in decontamination - ✔✔Absorbants Exercise in handling drums that are not intact and tightly sealed - ✔✔Extreme caution
The NFPA ratings are based on the material - ✔✔Flashpoint The DOT hazard classification system is based on the - ✔✔United Nations hazard classes What is the regulatory standard for trenching and excavation? - ✔✔ 29 CFR 1926. Who can certify an individual as a competent person? - ✔✔Employer Who is responsible for designing ramps during excavation work? - ✔✔Competent person A is a narrow excavation made below the surface of the ground - ✔✔Trench It should be noted that the test is the least accurate testing method - ✔✔Thumb penetration According to the OSHA soil classification system, Type A soil is the most - ✔✔Stable Who is responsible for classifying soils? - ✔✔Competent person Trench boxes or shields must be approved by a - ✔✔Registered professional engineer There is no sloping requirement for - ✔✔Stable rock "Distress" in OSHA parlance, means that a cave-in is - ✔✔Imminent or likely to occur 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
- ✔✔Permit-required confined spaces One should never enter a permit-requiring confined space without a safety attendant on duty and adequate air testing - ✔✔True If the confined space has contained hazardous substances, it is important for the confined space to be before entry - ✔✔Emptied and purged Air in the confined space should be tested for - ✔✔Oxygen content, flammability, and toxicity What are the OSHA acceptable limits for oxygen in a confined space? - ✔✔19.5%-23.5% What must you have prior to entering a confined space? - ✔✔Confined Space Entry Permit
One of the reasons for confined space injuries and fatalities is - ✔✔Poor planning A good way to begin on learning how to protect yourself is to take a look at some things that have caused - ✔✔Accidents in the past Working in a confined space has its own set of potential work problems such as: - ✔✔All of the above Toxins present two different types of risk: - ✔✔Chemical asphyxiation and irritation When the oxygen content is below it is too low to provide enough oxygen for a working person
- ✔✔19.5% Electrical power that could shock workers for move mechanical equipment must be prior to entry into a confined space - ✔✔Locked or tagged out provides the information needed to identify site hazards and to select worker protection methods - ✔✔Site characterization should be carried out when site hazards are largely unknown or when there is no need to go on site immediately - ✔✔Perimeter reconnaissance The purpose of an is to verify and supplement information from the off-site characterization - ✔✔On-site survey The outlines what needs to be accomplished and then prescribes procedures to protect the health and safety of the entry team - ✔✔Site Safety Plan 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
There are two main types of materials that are capable of skin and metal destruction and they are known as: - ✔✔Acids and bases The requires employers to evaluate chemical hazards in their facilities and to communicate the hazard information to employees - ✔✔Hazard Communication Standard (HCS) Define NFPA - ✔✔National Fire Protection Association The chemicals are the second-most commonly used and transported group of hazardous materials - ✔✔Corrosive class Should you splash your eyes with a chemical, what should you do? - ✔✔Flush with water Flushing must continue for a minimum of to ensure that all the chemical that can possibly be removed is in fact removed - ✔✔15 minutes The first and foremost hazard that a can produce is the ability to destroy living tissue - ✔✔Corrosive is the negative log of the concentration of H+ in solution - ✔✔pH The is a colorless, viscous fluid, is relatively insoluble in water, and can withstand high temperatures without degradation - ✔✔PCB mixture Define PCB - ✔✔Polychlorinated biphenyl 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
