CHST FINAL EXAM | 2026/2027 NEWEST EXAM WITH COMPLETE
QUESTIONS AND CORRECT DETAILED ANSWERS | ALREADY
GRADED A+.
Accident/incident investigation - ANSWER Although reactive it is another tool for uncovering hazards
and management system failures. The primary purpose of the accident/incident investigation is to
prevent future occurrences. Therefore, the results of the investigation should be used to initiate
corrective action.
Brain Storming - ANSWER A free flowing group discussion by employees who perform a task to
identify hazards, risks and solutions.
Job Safety (Hazard) Analysis - ANSWER A method that can be used to identify, analyze and record the
steps involved in performing a specific job; the existing or potential safety and health hazards
associated with each step; and the recommended action(s)/procedure(s) that will eliminate or
reduce these hazards and the risk of a workplace injury or illness.
Trend Analysis - ANSWER Worksite analysis is analysis of injury and illness trends over time, so that
patterns with common causes can be identified and prevented. Review osha injury and illness forms
is the most common form of pattern analysis, but other records of hazards can be analyzed for
patterns. Examples are inspection records and employee hazard reporting records.
What if - ANSWER For relatively uncomplicated processes, review the process from raw materials to
product. At each handling or processing step, "what if" questions are formulated and ANSWERed , to
evaluate the effects of component failures or procedural errors on the process.
Checklist - ANSWER For more complex processes, the "what if" study can be best organized through
the use of a "checklist" and assigning certain aspects of the process to the comittee members having
the greatest experience or skill in evaluating those aspects. Operator practices and job knowledge
are audited in the field, the suitability of equipment and materials of construction is studied, and the
chemistry of the process of control systems are reviewed, and the operating and maintenance
records are audited. Generally, a checklist evaluation process precedes use of the operated safely for
many years and has been subjected to periodic and thorough safety inspections and audits.
What if/Checklist - ANSWER Is a broadly based hazard assessment technique that combines the
creative thinking of a selected team of specialists with the methodical focus of a prepared checklist.
The result is a comprehensive hazard analysis that is extremely useful in training operation personnel
on the hazards of the particular operation.
,Failure modes and effect analysis (FMEA) - ANSWER System analysis technique that identifies the
manner in which failures occur and investigates their impact on one another, as well as on other
parts of the system.
Fault-tree analysis - ANSWER System safety technique using deductive (general to specific) analysis
that starts with an undesired event and analyzes the way the undesired event can occur. Uses
Boolean algebra to simplify the fault-tree diagram to a minimal cut set, which is the shortest, most
direct path that allows an event to take place.
Hazard and operability study - ANSWER Study used to identify problems associated with potential
hazards and deviations in plant operations from the design specifications and is carried out by
multidisciplinary team following a structure that includes a series of guide words.
Management oversight and risk tree (MORT) - ANSWER Analytical system that develops a logic tree
to identify total system risks, both those inherent in physical equipment and processes and those
arising from operational/management inadequacies.
Preliminary hazard analysis - ANSWER System safety technique that is the initial effort to identify
potentially hazardous components within a system during the design phase.
Systems Hazard Analysis (SHA) - ANSWER Method that seeks to identify physical and functional
incompatibilities between adjacent, interconnected, and interacting elements.
System safety engineering report - ANSWER Report that consists of a compliation of the production
phase inputs that identifies and documents the hazards of the final product or system and provides
definite conclusions about the safety integrity of the product and the manner in which hazards have
been controlled.
System safety program plan - ANSWER Plan that identifies the task to be accomplished in the total
safety program for the evolution of the system and is considered the key to a successful program.
Technique of human rate error prediction - ANSWER System safety technique that calculates the
probability of human operating errors.
Equipment and machinery manufacturers - ANSWER Owner and operator manuals typically include
(1) warnings of hazards that may be present during operation and instructions, and (2) precautions
for safely operating the equipment or machinery.
,Chemical manufacturers - ANSWER Are required to provide downstream users with safety data
sheets. These summarize information about health hazards, and provide instructions on how to
safely handle and use the chemical.
Trade associations, insurance carriers, manufacturers and gov. agencies. - ANSWER Some trade
associations and insurance carriers publish safety and health information. Some manufacturers, and
government agencies such as OSHA, the National institute for occupational safety and health
(NIOSH), issue safety and health warnings and hazard alerts directed toward particular products,
work practices, or hazards.
Employee safety and health complaints - ANSWER Employees have first-hand familiarity with the
hazards at their workplace. Any prior or recent complaints about safety and health conditions,
whether formal or informal, point to potential safety and health hazards.
Medical surveillance activities and employee exposure data. - ANSWER These results can alert
employers to hazards posed by chemical, physical, and biological agents. Use of aggregated results is
important to maintain the confidentiality of employee medical information.
Disaster preparedness scenarios - ANSWER Conducting a "what-if" analysis of possible natural and
man made disasters can help identify hazards that have a low probability of occurrence, but that may
have disastrous consequences. Examples include explosions that could be caused by flammable
chemicals or combustible dust, hazards that may be created by strong weather phenomena, or
incidents related to a criminal or terrorist act.
Chemical Agents - ANSWER Safety Data sheets (SDS) provide a good basis for developing a list of
toxic chemicals in the workplace. When many chemicals are present, hazards of the following types
of chemicals should be determined first: chemicals that are (1) volatile (2) handled or stored in open
containers; (3) used in processes where employees are likely to be exposed through inhalation,
ingestion, or skin contact; or (4) flammable and stored or used in a manner that poses a fire or
explosion hazard.
Biological agents - ANSWER These include bacteria, viruses, fungi, and other living organisms that
can cause acute and chronic infections by entering the body either directly or through breaks in the
skin. Sources can include laboratory operations, fermentation processes, or handling of raw food
products. They also include exposure to blood or other body fluids or to clients or patients with
infections diseases.
, Physical agents - ANSWER These include excessive levels of ionizing and nonionizing electromagnetic
radiation, noise, vibration, illumination, and temperature.
Equipment operation - ANSWER Ideally, each piece of equipment will be inspected to ensure that all
safeguards necessary to protect employees are in place and effective. These include measures to
ensure that employees avoid becoming caught in or struck by equipment; burned on hot surfaces;
shocked through contact with energized parts of electric circuits. Important areas of focus for
equipment inspection include equipment guarding; the condition of moving parts, parts that support
weight, and brakes; and hazards that might arise during maintenance activities.
Equipment Maintenance - ANSWER Ideally, the inspection will also include attention to safeguards
that ensure that equipment maintenance can be performed safely. This would include such
safeguards as deenergizing or otherwise isolating equipment; preventing chemical exposures
through appropriate flushing of pumps and other process equipment; releasing stored energy; and
use of lockout or tagout to prevent reactivation of equipment during servicing or maintenance.
Fire protection - ANSWER This part of the inspection would include, for example, making sure that
working fire extinguishers are readily available, that flammable liquids and gases are safely handled
and stored, and that employees have ready access to emergency.
Physical Environment - ANSWER This involves inspecting the facility's walking and working surfaces to
identify any trip and fall hazards and ensuring that they are eliminated or controlled.
Work and process flow - ANSWER The flow of materials and work through an operation can be an
important guide to potential hazards.
Work practices - ANSWER Work practices can be a source of hazards. Discussing work practices with
employees is particularly important as employees can often identify hazards and solutions based on
their day to day experience with those practices.
Risk Assessment Matrix - ANSWER Provides a qualitative method to categorize combinations of
indicators and to calculate risk. (Review chart workbook volume 1)
Hazard Prevention and Control - ANSWER Some ways to control hazards are: Regularly and
thoroughly maintain equipment, ensure that hazard correction procedures are in place, ensure that
everyone knows how to use and maintain PPE, make sure that everyone understands and follows
safe work procedures.
QUESTIONS AND CORRECT DETAILED ANSWERS | ALREADY
GRADED A+.
Accident/incident investigation - ANSWER Although reactive it is another tool for uncovering hazards
and management system failures. The primary purpose of the accident/incident investigation is to
prevent future occurrences. Therefore, the results of the investigation should be used to initiate
corrective action.
Brain Storming - ANSWER A free flowing group discussion by employees who perform a task to
identify hazards, risks and solutions.
Job Safety (Hazard) Analysis - ANSWER A method that can be used to identify, analyze and record the
steps involved in performing a specific job; the existing or potential safety and health hazards
associated with each step; and the recommended action(s)/procedure(s) that will eliminate or
reduce these hazards and the risk of a workplace injury or illness.
Trend Analysis - ANSWER Worksite analysis is analysis of injury and illness trends over time, so that
patterns with common causes can be identified and prevented. Review osha injury and illness forms
is the most common form of pattern analysis, but other records of hazards can be analyzed for
patterns. Examples are inspection records and employee hazard reporting records.
What if - ANSWER For relatively uncomplicated processes, review the process from raw materials to
product. At each handling or processing step, "what if" questions are formulated and ANSWERed , to
evaluate the effects of component failures or procedural errors on the process.
Checklist - ANSWER For more complex processes, the "what if" study can be best organized through
the use of a "checklist" and assigning certain aspects of the process to the comittee members having
the greatest experience or skill in evaluating those aspects. Operator practices and job knowledge
are audited in the field, the suitability of equipment and materials of construction is studied, and the
chemistry of the process of control systems are reviewed, and the operating and maintenance
records are audited. Generally, a checklist evaluation process precedes use of the operated safely for
many years and has been subjected to periodic and thorough safety inspections and audits.
What if/Checklist - ANSWER Is a broadly based hazard assessment technique that combines the
creative thinking of a selected team of specialists with the methodical focus of a prepared checklist.
The result is a comprehensive hazard analysis that is extremely useful in training operation personnel
on the hazards of the particular operation.
,Failure modes and effect analysis (FMEA) - ANSWER System analysis technique that identifies the
manner in which failures occur and investigates their impact on one another, as well as on other
parts of the system.
Fault-tree analysis - ANSWER System safety technique using deductive (general to specific) analysis
that starts with an undesired event and analyzes the way the undesired event can occur. Uses
Boolean algebra to simplify the fault-tree diagram to a minimal cut set, which is the shortest, most
direct path that allows an event to take place.
Hazard and operability study - ANSWER Study used to identify problems associated with potential
hazards and deviations in plant operations from the design specifications and is carried out by
multidisciplinary team following a structure that includes a series of guide words.
Management oversight and risk tree (MORT) - ANSWER Analytical system that develops a logic tree
to identify total system risks, both those inherent in physical equipment and processes and those
arising from operational/management inadequacies.
Preliminary hazard analysis - ANSWER System safety technique that is the initial effort to identify
potentially hazardous components within a system during the design phase.
Systems Hazard Analysis (SHA) - ANSWER Method that seeks to identify physical and functional
incompatibilities between adjacent, interconnected, and interacting elements.
System safety engineering report - ANSWER Report that consists of a compliation of the production
phase inputs that identifies and documents the hazards of the final product or system and provides
definite conclusions about the safety integrity of the product and the manner in which hazards have
been controlled.
System safety program plan - ANSWER Plan that identifies the task to be accomplished in the total
safety program for the evolution of the system and is considered the key to a successful program.
Technique of human rate error prediction - ANSWER System safety technique that calculates the
probability of human operating errors.
Equipment and machinery manufacturers - ANSWER Owner and operator manuals typically include
(1) warnings of hazards that may be present during operation and instructions, and (2) precautions
for safely operating the equipment or machinery.
,Chemical manufacturers - ANSWER Are required to provide downstream users with safety data
sheets. These summarize information about health hazards, and provide instructions on how to
safely handle and use the chemical.
Trade associations, insurance carriers, manufacturers and gov. agencies. - ANSWER Some trade
associations and insurance carriers publish safety and health information. Some manufacturers, and
government agencies such as OSHA, the National institute for occupational safety and health
(NIOSH), issue safety and health warnings and hazard alerts directed toward particular products,
work practices, or hazards.
Employee safety and health complaints - ANSWER Employees have first-hand familiarity with the
hazards at their workplace. Any prior or recent complaints about safety and health conditions,
whether formal or informal, point to potential safety and health hazards.
Medical surveillance activities and employee exposure data. - ANSWER These results can alert
employers to hazards posed by chemical, physical, and biological agents. Use of aggregated results is
important to maintain the confidentiality of employee medical information.
Disaster preparedness scenarios - ANSWER Conducting a "what-if" analysis of possible natural and
man made disasters can help identify hazards that have a low probability of occurrence, but that may
have disastrous consequences. Examples include explosions that could be caused by flammable
chemicals or combustible dust, hazards that may be created by strong weather phenomena, or
incidents related to a criminal or terrorist act.
Chemical Agents - ANSWER Safety Data sheets (SDS) provide a good basis for developing a list of
toxic chemicals in the workplace. When many chemicals are present, hazards of the following types
of chemicals should be determined first: chemicals that are (1) volatile (2) handled or stored in open
containers; (3) used in processes where employees are likely to be exposed through inhalation,
ingestion, or skin contact; or (4) flammable and stored or used in a manner that poses a fire or
explosion hazard.
Biological agents - ANSWER These include bacteria, viruses, fungi, and other living organisms that
can cause acute and chronic infections by entering the body either directly or through breaks in the
skin. Sources can include laboratory operations, fermentation processes, or handling of raw food
products. They also include exposure to blood or other body fluids or to clients or patients with
infections diseases.
, Physical agents - ANSWER These include excessive levels of ionizing and nonionizing electromagnetic
radiation, noise, vibration, illumination, and temperature.
Equipment operation - ANSWER Ideally, each piece of equipment will be inspected to ensure that all
safeguards necessary to protect employees are in place and effective. These include measures to
ensure that employees avoid becoming caught in or struck by equipment; burned on hot surfaces;
shocked through contact with energized parts of electric circuits. Important areas of focus for
equipment inspection include equipment guarding; the condition of moving parts, parts that support
weight, and brakes; and hazards that might arise during maintenance activities.
Equipment Maintenance - ANSWER Ideally, the inspection will also include attention to safeguards
that ensure that equipment maintenance can be performed safely. This would include such
safeguards as deenergizing or otherwise isolating equipment; preventing chemical exposures
through appropriate flushing of pumps and other process equipment; releasing stored energy; and
use of lockout or tagout to prevent reactivation of equipment during servicing or maintenance.
Fire protection - ANSWER This part of the inspection would include, for example, making sure that
working fire extinguishers are readily available, that flammable liquids and gases are safely handled
and stored, and that employees have ready access to emergency.
Physical Environment - ANSWER This involves inspecting the facility's walking and working surfaces to
identify any trip and fall hazards and ensuring that they are eliminated or controlled.
Work and process flow - ANSWER The flow of materials and work through an operation can be an
important guide to potential hazards.
Work practices - ANSWER Work practices can be a source of hazards. Discussing work practices with
employees is particularly important as employees can often identify hazards and solutions based on
their day to day experience with those practices.
Risk Assessment Matrix - ANSWER Provides a qualitative method to categorize combinations of
indicators and to calculate risk. (Review chart workbook volume 1)
Hazard Prevention and Control - ANSWER Some ways to control hazards are: Regularly and
thoroughly maintain equipment, ensure that hazard correction procedures are in place, ensure that
everyone knows how to use and maintain PPE, make sure that everyone understands and follows
safe work procedures.
