CSLB General Building (B) — All Questions

What year was the Occupational Safety and Health Act signed into law, creating OSHA?

• a.1970✓
• b.1965
• c.1980
• d.1955

The Occupational Safety and Health Act was signed into law in 1970 and OSHA began operating in 1971. Its purpose is to assure safe and healthful working conditions for workers. It also established the National Institute for Occupational Safety and Health.

Under the OSHA Act's General Duty Clause, what is an employer primarily required to provide?

• a.Free health insurance to all employees
• b.A workplace free from recognized hazards likely to cause death or serious harm✓
• c.A guaranteed minimum wage above federal levels
• d.Paid time off after any workplace injury

The General Duty Clause requires employers to furnish a workplace free from recognized hazards that are causing or likely to cause death or serious physical harm. It applies when no specific OSHA standard covers a particular hazard. Employers must take reasonable steps to identify and correct such hazards.

Which of the following is a right guaranteed to workers under OSHA?

• a.The right to ignore safety training if experienced
• b.The right to set their own permissible exposure limits
• c.The right to receive information and training about hazards✓
• d.The right to skip using required PPE

Workers have the right to receive information and training about workplace hazards in a language they understand. They may also review records of work-related injuries and file confidential complaints. These rights help ensure workers can participate in maintaining a safe workplace.

By what date must an employer correct a hazard after an OSHA citation?

• a.Only if the worker sues
• b.There is no deadline
• c.Within exactly 24 hours in all cases
• d.By the abatement date set in the citation✓

A citation specifies an abatement date, which is the deadline by which the employer must correct the hazard. Employers must also post the citation near the location of the violation. Failure to abate by the deadline can result in additional penalties.

What form is generally used to record work-related injuries and illnesses in the OSHA recordkeeping system?

• a.IRS Form W-2
• b.OSHA Form 10
• c.Form I-9
• d.OSHA Form 300 (Log of Work-Related Injuries and Illnesses)✓

The OSHA Form 300 is the Log of Work-Related Injuries and Illnesses used by covered employers to record recordable incidents. The Form 300A summary must be posted annually, and Form 301 records details of each incident. These records help identify hazard trends.

Which situation must an employer report to OSHA within 8 hours?

• a.Any first-aid case
• b.A near-miss with no injury
• c.A work-related fatality✓
• d.An employee arriving late

Employers must report a work-related fatality to OSHA within 8 hours of learning of it. In-patient hospitalizations, amputations, and losses of an eye must be reported within 24 hours. Prompt reporting allows OSHA to investigate serious incidents.

Can an employer legally retaliate against a worker for filing an OSHA complaint?

• a.Yes, if the complaint is dismissed
• b.No, retaliation is prohibited by law✓
• c.Yes, during the probationary period
• d.Only with written notice

Section 11(c) of the OSH Act prohibits employers from retaliating against workers who exercise their safety and health rights, such as filing a complaint. Prohibited retaliation includes firing, demotion, or reduced hours. Workers who face retaliation can file a complaint with OSHA.

What is the difference between a 'programmed' and an 'unprogrammed' OSHA inspection?

• a.Programmed inspections target high-hazard industries; unprogrammed follow complaints or incidents✓
• b.Programmed inspections are random lottery draws
• c.Unprogrammed inspections only occur at night
• d.There is no difference between them

Programmed inspections are planned and target industries or workplaces with high injury rates or specific hazards. Unprogrammed inspections respond to events such as complaints, referrals, fatalities, or catastrophes. Both types follow the same general inspection procedures.

During an OSHA inspection, what is the typical first step after the compliance officer arrives?

• a.An opening conference to explain the inspection's purpose✓
• b.Immediate issuance of penalties
• c.A mandatory shutdown of all operations
• d.Interviewing customers

An OSHA inspection typically begins with an opening conference where the compliance officer explains why the workplace was selected and the scope of the inspection. This is followed by a walkaround and a closing conference. Employer and employee representatives may accompany the walkaround.

Which of the following best describes a 'willful' OSHA violation?

• a.A minor paperwork error
• b.A violation committed with intentional disregard or plain indifference to the law✓
• c.A hazard the employer did not know about
• d.A first-time recordkeeping mistake

A willful violation is one the employer commits with intentional knowledge or plain indifference to OSHA requirements. Willful violations carry the highest penalties and can lead to criminal charges if they result in a worker's death. They reflect a conscious disregard for safety obligations.

Who is responsible for providing required personal protective equipment (PPE) in most cases?

• a.The worker, purchased personally
• b.The equipment manufacturer directly
• c.The employer, generally at no cost to the worker✓
• d.OSHA inspectors

Employers are generally required to provide required PPE at no cost to employees, with limited exceptions such as ordinary safety-toe footwear allowed to be worn off-site. Employers must also ensure PPE is properly maintained and that workers are trained in its use. This helps remove cost as a barrier to protection.

What is the purpose of the OSHA 'It's the Law' poster that employers must display?

• a.To advertise the company
• b.To list employee salaries
• c.To post the daily schedule
• d.To inform workers of their rights and how to file a complaint✓

The OSHA 'Job Safety and Health: It's the Law' poster informs workers of their rights and employer responsibilities under the OSH Act. It must be displayed in a conspicuous location where workers can see it. It also explains how to contact OSHA and file complaints.

How long must most OSHA injury and illness records generally be retained?

• a.30 days
• b.6 months
• c.Indefinitely with no limit
• d.5 years following the end of the calendar year they cover✓

OSHA 300 Logs, annual summaries, and incident reports must generally be retained for five years following the end of the calendar year those records cover. Employers must update the logs if new information about a recorded case emerges. Certain exposure and medical records must be kept far longer.

Which agency conducts research and makes recommendations to prevent workplace injury and illness?

• a.The FBI
• b.The FCC
• c.NIOSH✓
• d.The SEC

The National Institute for Occupational Safety and Health (NIOSH) conducts research and makes recommendations for preventing work-related injury and illness. Unlike OSHA, NIOSH is a research agency and does not issue or enforce regulations. It is part of the Centers for Disease Control and Prevention.

What is a State Plan under OSHA?

• a.A plan to eliminate all state taxes
• b.A state-run safety program that must be at least as effective as federal OSHA✓
• c.A federal budget document
• d.A voluntary insurance policy

A State Plan is an OSHA-approved workplace safety and health program operated by a state or territory. These plans must be at least as effective as the federal OSHA program and may cover public-sector workers. About half the states operate their own approved plans.

If a worker believes conditions are unsafe, what should generally be their FIRST step?

• a.Notify the employer or supervisor about the hazard✓
• b.Immediately quit the job
• c.Contact the local news
• d.Ignore it and continue working

Workers are generally encouraged to first notify their employer or supervisor about a hazard so it can be corrected. If the employer does not fix the problem, the worker may file a complaint with OSHA. Reporting internally often resolves issues most quickly.

Under OSHA, when may a worker refuse to perform a task?

• a.When there is a reasonable belief of imminent danger and no time to correct it through normal channels✓
• b.Any time they simply do not want to work
• c.Whenever the weather is bad
• d.Only with a doctor's note

A worker may refuse a task when they have a reasonable, good-faith belief of an imminent danger of death or serious injury, the employer has not corrected it, and there is no time to eliminate the danger through regular enforcement channels. The worker should ask the employer to correct the hazard first. This right is narrowly defined and not a general refusal privilege.

What is the primary goal of an effective safety and health program under OSHA guidelines?

• a.To reduce paperwork only
• b.To find and fix hazards before they cause injury or illness✓
• c.To increase production speed
• d.To lower employee wages

The primary goal of a safety and health program is to proactively find and fix workplace hazards before they cause harm. Core elements include management leadership, worker participation, hazard identification, and training. Such programs reduce injuries, illnesses, and related costs.

What are the 'Focus Four' hazards responsible for most construction deaths?

• a.Noise, dust, heat, and cold
• b.Slips, trips, cuts, and bruises
• c.Falls, struck-by, caught-in/between, and electrocution✓
• d.Fire, flood, wind, and earthquake

OSHA's Focus Four are falls, struck-by, caught-in/between, and electrocution hazards. These four categories account for the majority of construction fatalities each year. Training emphasizes recognizing and controlling each of them.

Which of the Focus Four hazards causes the greatest number of construction fatalities?

• a.Electrocution
• b.Caught-in/between
• c.Struck-by
• d.Falls✓

Falls are consistently the leading cause of death in construction, making up roughly a third of all industry fatalities. This is why fall protection receives heavy regulatory emphasis. Preventing falls has the greatest single impact on construction safety.

A worker is hit by a swinging load from a crane. Which Focus Four category does this fall under?

• a.Caught-in/between
• b.Fall
• c.Electrocution
• d.Struck-by✓

Being hit by a moving or swinging object such as a crane load is a struck-by hazard. Struck-by incidents also include flying, falling, and rolling objects. Controls include barricading swing zones and keeping workers clear of suspended loads.

A worker's arm is pulled into an unguarded rotating drive shaft. This is an example of which hazard?

• a.Struck-by
• b.Fall
• c.Caught-in/between✓
• d.Chemical exposure

Having a body part drawn into or crushed by machinery is a caught-in/between hazard. Machine guarding and lockout/tagout are key controls for these hazards. Rotating equipment must be guarded to prevent contact with moving parts.

What is the primary purpose of a competent person on a construction site?

• a.To manage payroll
• b.To identify hazards and have authority to correct them promptly✓
• c.To greet visitors
• d.To order lunch for the crew

A competent person is someone capable of identifying existing and predictable hazards and who has the authorization to take prompt corrective measures. OSHA requires a competent person for many activities, such as scaffolding, excavation, and fall protection. Their authority to act is a defining feature of the role.

Which control is considered MOST effective in the hierarchy of controls?

• a.Elimination of the hazard✓
• b.Personal protective equipment
• c.Administrative controls
• d.Warning signs

In the hierarchy of controls, elimination of the hazard is the most effective method because it removes the danger entirely. The full order is elimination, substitution, engineering controls, administrative controls, and PPE. PPE is the least effective and a last line of defense.

Before entering an excavation deeper than 5 feet, what is generally required?

• a.A protective system such as sloping, shoring, or shielding✓
• b.Only a hard hat
• c.Nothing, if the soil looks stable
• d.Permission from customers

Excavations 5 feet or deeper generally require a protective system such as sloping, benching, shoring, or a trench shield, unless made entirely of stable rock. A competent person must inspect the excavation. Trench cave-ins are a deadly caught-in/between hazard.

Where should excavated soil (spoil pile) be placed relative to the edge of a trench?

• a.Directly on the trench edge
• b.At least 2 feet back from the edge✓
• c.It does not matter
• d.Inside the trench

Spoil piles and other materials must be kept at least 2 feet back from the edge of an excavation. This reduces the load on the trench walls and prevents materials from rolling back in. Keeping the edge clear also gives workers a safe exit path.

What is the maximum distance a worker in a trench 4 feet or deeper should be from a means of egress?

• a.100 feet
• b.50 feet
• c.25 feet✓
• d.There is no requirement

In trenches 4 feet or deeper, a stairway, ladder, ramp, or other safe means of egress must be within 25 feet of workers. This ensures a quick exit in an emergency such as a cave-in or water intrusion. The means of egress must extend above the trench top edge.

Which practice best reduces struck-by hazards from vehicles and equipment on site?

• a.Wearing dark clothing
• b.Standing behind backing vehicles
• c.Removing backup alarms
• d.Using high-visibility clothing, spotters, and traffic control✓

Struck-by hazards from vehicles are reduced by high-visibility clothing, trained spotters, backup alarms, and traffic control plans. Workers should stay out of the blind spots of heavy equipment. Establishing exclusion zones keeps workers separated from moving equipment.

A tool left on an overhead beam falls and strikes a worker below. What is the best preventive measure?

• a.Removing all hard hats
• b.Working faster
• c.Ignoring the area below
• d.Toe boards, tool tethers, and barricading areas below overhead work✓

Falling-object struck-by hazards are controlled with toe boards, screens, tool tethers, and barricading the area below overhead work. Hard hats provide protection but should not be the only control. Keeping tools secured at height prevents them from becoming projectiles.

Which hard hat class provides electrical protection up to 20,000 volts?

• a.Class C
• b.Class G
• c.Class E✓
• d.There is no such rating

Class E (Electrical) hard hats are tested to provide protection against contact with up to 20,000 volts. Class G (General) is rated to 2,200 volts, and Class C (Conductive) offers no electrical protection. Selecting the right class matters near energized equipment.

Which is a common caught-in/between hazard during trenching operations?

• a.Sunburn
• b.Cave-in of unprotected trench walls✓
• c.Loud noise
• d.Slippery floors

A cave-in of unprotected trench walls is a deadly caught-in/between hazard because soil is extremely heavy and can bury a worker in seconds. Protective systems and competent-person inspections are essential. Even shallow collapses can cause fatal crushing injuries.

What is the purpose of a Job Hazard Analysis (JHA)?

• a.To break a job into steps and identify hazards and controls for each✓
• b.To calculate wages
• c.To schedule vacations
• d.To advertise the company

A Job Hazard Analysis breaks a task into individual steps, identifies the hazards associated with each step, and determines controls to reduce risk. It is a proactive tool for planning safe work. Involving workers who perform the task improves its accuracy.

When working near unstable overhead materials or structures, what is the best first action?

• a.Barricade the area and keep workers out until it is made safe✓
• b.Work directly beneath it quickly
• c.Remove warning signs
• d.Increase the load

Areas with unstable overhead materials should be barricaded and kept clear until the hazard is stabilized or removed. Only trained personnel with proper controls should address the instability. Keeping workers out of the danger zone prevents struck-by and crushing injuries.

Which factor most increases the danger of a trench collapse?

• a.Dry, cool weather
• b.Previously disturbed soil, water intrusion, and vibration from equipment✓
• c.A shallow depth of 1 foot
• d.Bright sunlight

Previously disturbed soil, water accumulation, and vibration from nearby traffic or equipment all increase the likelihood of a trench collapse. A competent person must evaluate these conditions. Soil that has been dug before does not hold together as reliably as undisturbed ground.

What does 'housekeeping' on a construction site help prevent?

• a.Only aesthetic problems
• b.Higher wages
• c.Slips, trips, falls, fires, and struck-by hazards from clutter✓
• d.Faster internet

Good housekeeping keeps walkways clear and removes debris, reducing slips, trips, falls, fire fuel, and struck-by hazards. Materials should be stored neatly and scrap removed regularly. A clean site is a strong indicator of an overall safe operation.

A rigging chain snaps and the load drops. Which Focus Four hazard is most directly involved?

• a.Electrocution
• b.Caught-in/between
• c.Chemical
• d.Struck-by✓

A dropped load from failed rigging is a struck-by falling-object hazard. Rigging must be inspected before use and rated for the load. Workers should never stand under a suspended load.

What is a permit-required confined space?

• a.Any small office
• b.A break room
• c.A parking lot
• d.A confined space with hazards such as toxic atmosphere, engulfment, or entrapment requiring a permit✓

A permit-required confined space has one or more serious hazards, such as a hazardous atmosphere, potential for engulfment, or a configuration that could trap or asphyxiate an entrant. Entry requires atmospheric testing, a permit, and an attendant. These procedures prevent deaths in tanks, vaults, and manholes.

Before entering a permit-required confined space, what must be done regarding the atmosphere?

• a.Nothing, just enter quickly
• b.Light a match to check for gas
• c.Test the atmosphere for oxygen, flammability, and toxicity✓
• d.Spray air freshener

The atmosphere of a permit-required confined space must be tested before entry for oxygen content, flammable gases, and toxic contaminants, in that order. Testing continues or is monitored during entry. Never rely on smell or appearance to judge atmospheric safety.

Which of the following is an engineering control for a construction hazard?

• a.A safety poster
• b.A machine guard that physically blocks contact with moving parts✓
• c.A written policy
• d.A warning email

An engineering control physically removes or isolates a hazard, such as a machine guard, ventilation system, or trench shield. Engineering controls rank above administrative controls and PPE in the hierarchy. They protect workers without depending on individual behavior.

What is the main reason to keep workers out of the 'swing radius' of a crane or excavator?

• a.To prevent struck-by and caught-in/between injuries from the rotating counterweight✓
• b.To save fuel
• c.To reduce noise
• d.To improve the view

The rotating superstructure and counterweight of a crane or excavator can strike or crush a worker caught between it and a fixed object. The swing radius should be barricaded to keep workers out. This is a well-documented cause of construction fatalities.

Which is the correct order of the hierarchy of controls from most to least effective?

• a.Elimination, substitution, engineering controls, administrative controls, PPE✓
• b.PPE, administrative, engineering, substitution, elimination
• c.Administrative, PPE, elimination, engineering, substitution
• d.Substitution, PPE, elimination, engineering, administrative

The correct hierarchy from most to least effective is elimination, substitution, engineering controls, administrative controls, and PPE. Higher-level controls are more reliable because they do not depend on worker behavior. PPE is the last line of defense.

What should a worker do if they discover a hazard they cannot correct themselves?

• a.Ignore it
• b.Report it to a supervisor or competent person immediately✓
• c.Cover it up
• d.Wait until the next inspection

A worker who finds a hazard beyond their ability to fix should report it to a supervisor or competent person right away. Prompt reporting allows corrective action before someone is hurt. Marking or barricading the hazard temporarily can protect others in the meantime.

At what height is fall protection generally required in construction?

• a.20 feet
• b.10 feet
• c.6 feet above a lower level✓
• d.2 feet

In construction, fall protection is generally required at 6 feet or more above a lower level. Different thresholds apply in other industries, such as 4 feet in general industry. The 6-foot rule is a core concept in construction safety.

Which of the following is a conventional fall protection system?

• a.A warning sign only
• b.A verbal reminder
• c.Bright paint on the floor
• d.A guardrail system✓

Guardrail systems, safety net systems, and personal fall arrest systems are the conventional means of fall protection. Each physically prevents a fall or arrests it before the worker reaches a lower level. Signs and reminders alone are not conventional fall protection.

What is the required top rail height for a standard guardrail system?

• a.12 inches
• b.60 inches
• c.20 inches
• d.Approximately 42 inches, plus or minus 3 inches✓

A standard guardrail top rail must be about 42 inches high, plus or minus 3 inches, above the walking or working surface. A midrail is installed roughly halfway between the top rail and the surface. Guardrails must withstand at least 200 pounds of force applied outward or downward.

What are the three main components of a personal fall arrest system (PFAS)?

• a.Ladder, rope, and bucket
• b.Helmet, gloves, and boots
• c.Anchorage, body harness, and connector such as a lanyard✓
• d.Sign, cone, and tape

A personal fall arrest system consists of an anchorage, a full-body harness, and a connecting device such as a shock-absorbing lanyard or self-retracting lifeline. All three parts, sometimes remembered as the ABCs, must work together. A missing or defective component can render the system useless.

What type of body wear is required in a personal fall arrest system today?

• a.A body belt
• b.A full-body harness✓
• c.A simple rope around the waist
• d.No body wear needed

A full-body harness is required in modern personal fall arrest systems because it distributes arrest forces across the body. Body belts are no longer permitted for fall arrest because they can cause internal injuries. The harness must fit properly and be inspected before each use.

What is the maximum arresting force a personal fall arrest system should place on a worker's body?

• a.1,800 pounds when using a full-body harness✓
• b.5,000 pounds
• c.10,000 pounds
• d.There is no limit

A personal fall arrest system must limit the maximum arresting force on a worker to 1,800 pounds when a full-body harness is used. Shock-absorbing lanyards help keep forces within this limit. Exceeding this force could cause serious injury even during a successful arrest.

Why is it important to minimize free fall distance in a fall arrest system?

• a.To reduce arresting forces and the chance of hitting a lower level✓
• b.To save rope
• c.To make the harness lighter
• d.It is not important

Minimizing free fall distance reduces the forces on the body and the risk of striking a lower level or obstruction. OSHA generally limits free fall to 6 feet or less. Anchoring at or above the D-ring and accounting for total fall clearance are essential.

What must be considered to prevent a worker from hitting the ground during a fall arrest?

• a.Only the worker's weight
• b.Total fall clearance, including lanyard length, deceleration distance, and harness stretch✓
• c.The color of the harness
• d.The time of day

Fall clearance calculations must account for the lanyard length, deceleration distance, harness stretch, and a safety margin. If total clearance exceeds the distance to the lower level, the worker could still hit the ground. This calculation is critical when anchoring at foot level.

When must a scaffold be inspected?

• a.Only once a year
• b.Only when it collapses
• c.Before each work shift and after any event that could affect its integrity✓
• d.Never

Scaffolds must be inspected by a competent person before each work shift and after any occurrence that could affect their structural integrity, such as a storm. Defective scaffolds must be tagged and taken out of service. Regular inspection prevents scaffold collapses and falls.

At what height must most scaffold platforms have fall protection?

• a.2 feet
• b.25 feet
• c.50 feet
• d.10 feet above a lower level✓

Most scaffold platforms require fall protection when they are more than 10 feet above a lower level. This may be provided by guardrails or personal fall arrest systems depending on the scaffold type. The 10-foot scaffold threshold differs from the general 6-foot construction rule.

How must scaffold platforms be planked to prevent workers or tools from falling through?

• a.Left mostly open
• b.Planked with 12-inch gaps
• c.Not planked at all
• d.Fully planked or decked with gaps generally no more than 1 inch around uprights✓

Scaffold platforms must be fully planked or decked, with the space between planks and between the platform and uprights generally not exceeding 1 inch. Larger gaps are only allowed where necessary to fit around uprights. Full planking prevents workers and tools from falling through.

How should a straight or extension ladder be positioned against a wall (the 4-to-1 rule)?

• a.4 feet out for every 1 foot of height
• b.Straight up vertically
• c.1 foot out at the base for every 4 feet of working height✓
• d.At a 90-degree angle

The 4-to-1 rule means the base of the ladder should be placed 1 foot away from the wall for every 4 feet of vertical working height. This angle provides stability and reduces the chance of the ladder sliding out. Setting the ladder too steep or too shallow increases fall risk.

How far above a landing must an extension ladder extend for safe access?

• a.It should stop below the landing
• b.At least 3 feet above the landing surface✓
• c.Exactly at the landing edge
• d.10 feet above

A ladder used to access an upper landing must extend at least 3 feet above the landing surface. This gives the worker something to hold while stepping on and off. If it cannot extend, a grab rail must be provided.

What is the '3-point contact' rule when climbing a ladder?

• a.Keep three limbs in contact with the ladder at all times✓
• b.Touch the ladder three times before climbing
• c.Use only three rungs
• d.Have three workers hold it

Three-point contact means keeping two hands and one foot, or two feet and one hand, on the ladder at all times while climbing. This maintains stability and reduces the chance of falling. Workers should carry tools in a belt or hoist them separately rather than in their hands.

Why should you never stand on the top cap or top step of a stepladder?

• a.It creates instability and a serious fall hazard✓
• b.It voids the warranty
• c.It scratches the ladder
• d.It is perfectly safe to do so

Standing on the top cap or top step of a stepladder raises the center of gravity and makes the ladder unstable, creating a serious fall hazard. Manufacturers label these areas as not for standing. Choosing a taller ladder is the correct solution when more height is needed.

What should be done with a ladder that has a cracked rail or broken rung?

• a.Use it carefully
• b.Tag it out of service and remove it from use until repaired or discarded✓
• c.Tape over the crack and continue
• d.Lend it to another crew

A ladder with structural defects such as a cracked rail or broken rung must be tagged out of service and removed from use. It should be repaired to original condition or destroyed. Using a damaged ladder can lead to sudden failure and a fall.

What is the purpose of a safety net system?

• a.Decoration
• b.To store tools
• c.To catch a falling worker when other fall protection is not feasible✓
• d.To block sunlight

Safety net systems catch a falling worker and are used where guardrails or personal fall arrest are not practical. Nets must be installed as close as practicable under the work surface, never more than 30 feet below. They must be inspected and drop-tested or otherwise certified.

What is a 'controlled access zone' used for in fall protection?

• a.Storing vehicles
• b.Parking equipment
• c.A break area
• d.Designating an area where certain work may occur with access limited to authorized workers✓

A controlled access zone is an area where certain work, such as leading-edge or overhand bricklaying, may take place and where access is limited to authorized workers. It is defined by control lines and used with a safety monitoring system in specific situations. It is a form of alternative fall protection where conventional systems are infeasible.

When is a floor hole or opening a fall hazard that must be protected?

• a.Only if larger than a door
• b.Never, holes are always safe
• c.Only outdoors
• d.When a worker could fall through or step into it, requiring covers or guardrails✓

Holes and openings in floors or roofs through which a worker could fall must be protected with covers, guardrails, or personal fall arrest. Covers must be secured and marked, and be able to support the intended loads. Unprotected openings are a common and preventable fall hazard.

Who is required to train workers on fall hazards and the fall protection systems they will use?

• a.Any coworker
• b.The equipment vendor only
• c.A competent person, through a fall protection training program✓
• d.No training is required

OSHA requires that a competent person train each worker exposed to fall hazards to recognize those hazards and use the fall protection systems correctly. Retraining is required when conditions change or when a worker shows inadequate understanding. Training must be documented with a written certification.

What does the acronym LOTO stand for in workplace safety?

• a.Load On Time Out
• b.Lockout/Tagout✓
• c.Line Operator Task Order
• d.Lift Over Turn Off

LOTO stands for Lockout/Tagout, a procedure to control hazardous energy during servicing and maintenance. It ensures equipment is de-energized and cannot be unexpectedly started. Each authorized worker applies their own lock so the equipment stays safe until work is done.

What is the primary purpose of a lockout/tagout program?

• a.To control hazardous energy so machines cannot start unexpectedly during service✓
• b.To lock the tool room at night
• c.To track employee attendance
• d.To label finished products

The purpose of lockout/tagout is to control hazardous energy sources so that equipment cannot be energized or started while workers service or maintain it. Hazardous energy includes electrical, mechanical, hydraulic, pneumatic, thermal, and stored energy. Unexpected startup or energy release causes many serious injuries.

Under lockout/tagout, who is allowed to remove a lock from equipment?

• a.Generally only the authorized worker who applied that lock✓
• b.Any worker who needs the machine
• c.The first person to arrive that day
• d.A customer

As a rule, only the authorized employee who applied a lock may remove it. This ensures no one is still working on the equipment when it is re-energized. Special documented procedures apply if that worker is unavailable and the lock must be removed.

What does GFCI stand for and what does it protect against?

• a.General Field Control Inspector; it inspects fields
• b.Ground Fault Circuit Interrupter; it protects against electrical shock✓
• c.Ground Force Cable Insulator; it insulates cables
• d.Gas Flow Control Instrument; it controls gas

A GFCI is a Ground Fault Circuit Interrupter that protects workers from electric shock by quickly shutting off power when it detects current leaking to ground. It reacts to very small imbalances in current in a fraction of a second. GFCIs are required for many temporary power and outdoor circuits on construction sites.

On construction sites, what is one acceptable method to protect workers using temporary power from ground faults?

• a.Removing all grounding
• b.Using bare wires
• c.Using GFCI protection on receptacles or an assured equipment grounding conductor program✓
• d.Working in the rain

OSHA requires either GFCI protection on 120-volt temporary receptacles or an assured equipment grounding conductor program on construction sites. GFCIs are the more common and reliable choice. These measures protect against the shock hazards common with temporary wiring and portable tools.

What is the safest approach when working near overhead power lines?

• a.Touch them to test if they are live
• b.Lean ladders against them
• c.Spray them with water
• d.Maintain a safe clearance distance and assume all lines are energized✓

Workers should assume all overhead power lines are energized and maintain the required minimum clearance distance, which increases with voltage. Equipment such as cranes and ladders must be kept well away from lines. Contact with overhead lines is a leading cause of electrocution in construction.

What should you do before using an electrical cord or tool that appears damaged?

• a.Use it quickly before it fails
• b.Wrap it in cloth
• c.Use it only in dry areas
• d.Remove it from service and do not use it until repaired or replaced✓

A damaged cord or tool must be removed from service and not used until it is properly repaired or replaced. Frayed insulation, exposed conductors, or damaged plugs create shock and fire hazards. Inspecting cords and tools before each use is a basic electrical safety practice.

Why should the grounding prong on a three-prong plug never be removed?

• a.It makes the plug fit better
• b.It saves electricity
• c.The grounding prong provides a safe path for fault current, reducing shock risk✓
• d.It is purely decorative

The grounding prong provides a low-resistance path for fault current to flow safely to ground, reducing the risk of shock if a tool develops a fault. Removing or bending it defeats this protection. Tools with a missing ground prong should be taken out of service.

What is the correct action if a coworker is in contact with a live electrical source?

• a.Grab them immediately with bare hands
• b.De-energize the source or use a non-conductive object to separate them, then call for help✓
• c.Pour water on them
• d.Do nothing and wait

You should never touch a person who is in contact with a live electrical source with bare hands, because the current can pass to you. First de-energize the source if possible, or use a non-conductive object to separate the person from the source, then call for emergency help. Attempting a bare-hand rescue can create a second victim.

What is the role of PPE when selected as part of electrical safety?

• a.To protect the worker as a last line of defense when hazards cannot be otherwise removed✓
• b.To make workers look uniform
• c.To increase productivity
• d.To replace training

PPE, such as insulating gloves and arc-rated clothing, protects the worker as the last line of defense when electrical hazards cannot be eliminated or controlled by other means. It must be rated for the voltage and hazard involved. PPE supplements, but never replaces, de-energizing and safe work practices.

What is an arc flash?

• a.A sudden release of energy from an electrical arc that can cause severe burns✓
• b.A camera flash
• c.A type of light bulb
• d.A warning label

An arc flash is a rapid release of energy caused by an electrical arc, producing intense heat, light, and pressure that can cause severe burns and other injuries. Proper arc-rated PPE and safe work distances reduce the danger. De-energizing equipment before work is the best protection.

Which PPE is specifically designed to protect against electrical shock when handling energized conductors?

• a.Cotton work gloves
• b.Rated insulating rubber gloves✓
• c.Leather gloves alone
• d.No gloves needed

Rated insulating rubber gloves, often worn with leather protectors, are designed to protect against electrical shock when working on or near energized conductors. They must be voltage-rated for the task and tested regularly. Ordinary work gloves offer no shock protection.

Why is it dangerous to use electrical equipment in wet or damp conditions?

• a.It makes tools quieter
• b.It has no effect
• c.Water improves conductivity and greatly increases shock risk✓
• d.Water insulates the worker

Water is a conductor and dramatically lowers the body's resistance, increasing the severity of an electric shock. Wet conditions make ground faults far more likely to injure a worker. GFCI protection and keeping connections dry are essential in these environments.

What is the first step in a typical lockout/tagout procedure?

• a.Start the machine
• b.Remove all guards
• c.Leave the area
• d.Prepare for shutdown by identifying energy sources and notifying affected employees✓

The first step of lockout/tagout is preparation: identifying all energy sources and notifying affected employees of the planned shutdown. The equipment is then shut down, isolated, locked and tagged, and any stored energy released. Finally, the isolation is verified before work begins.

After applying locks and tags, what critical step verifies the equipment is safe?

• a.Assume it is off
• b.Paint the machine
• c.Skip verification to save time
• d.Attempt to start the equipment to confirm it will not operate (verify zero energy)✓

After isolating and locking out energy, workers must verify a zero-energy state, often by attempting to start the equipment to confirm it will not operate. Test instruments are used to confirm electrical circuits are de-energized. Skipping verification is a common and dangerous mistake.

What does 'stored energy' refer to in lockout/tagout?

• a.Energy in batteries only
• b.Backup generators
• c.Residual energy such as in capacitors, springs, hydraulics, or elevated parts that must be released or restrained✓
• d.Solar panels

Stored energy is residual or potential energy that remains after the main source is disconnected, such as in capacitors, compressed springs, pressurized hydraulics, or raised machine parts. This energy must be released, blocked, or restrained before servicing. Overlooking stored energy can cause unexpected and dangerous movement.

What should unqualified workers do around exposed energized electrical parts?

• a.Touch them to test
• b.Stay outside the limited approach boundary unless qualified and protected✓
• c.Stand as close as possible
• d.There is no concern

Unqualified workers must stay outside the established approach boundaries around exposed energized parts. Only qualified persons with proper training and PPE may approach closer under controlled conditions. Maintaining distance prevents accidental contact and arc-flash exposure.

Why must extension cords used in construction be rated for hard or extra-hard usage?

• a.To withstand the rough conditions of a job site without insulation damage✓
• b.To look professional
• c.To conduct more electricity
• d.To reduce cost

Construction extension cords must be rated for hard or extra-hard usage so their insulation can withstand abrasion, moisture, and rough handling on a job site. Cords rated only for household use damage easily and create shock and fire hazards. The rating is marked on the cord jacket.

What is the danger of overloading an electrical circuit or extension cord?

• a.Overheating that can cause fires and equipment damage✓
• b.It saves money
• c.Faster tool operation
• d.There is no danger

Overloading a circuit or cord draws more current than it is rated for, causing it to overheat and potentially start a fire or damage equipment. Cords should be sized for the load and length of the run. Daisy-chaining cords and power strips increases this risk.

Which of the following best describes a 'qualified person' for electrical work?

• a.Anyone wearing gloves
• b.A person trained and knowledgeable in electrical equipment operation and the hazards involved✓
• c.A new apprentice on day one
• d.A visitor to the site

A qualified person is trained and knowledgeable in the construction and operation of electrical equipment and installations and in recognizing and avoiding the associated hazards. Only qualified persons may perform certain energized electrical tasks. Proper training and demonstrated skill define this designation.

What does the Hazard Communication Standard (HazCom) require employers to provide about chemicals?

• a.Nothing
• b.Only a phone number
• c.Labels, safety data sheets, and worker training about chemical hazards✓
• d.A discount on the chemicals

The Hazard Communication Standard requires employers to inform and train workers about the hazardous chemicals they may be exposed to. This includes proper labeling, accessible Safety Data Sheets, and a written hazard communication program. Workers must be trained on how to protect themselves.

What is a Safety Data Sheet (SDS)?

• a.A payroll form
• b.A vacation request
• c.A building permit
• d.A document providing detailed hazard, handling, and emergency information about a chemical✓

A Safety Data Sheet provides detailed information about a hazardous chemical, including its hazards, safe handling, storage, first aid, and emergency measures. SDSs follow a standardized 16-section format. They must be readily accessible to workers on every shift.

How many sections does a standardized Safety Data Sheet contain under the Globally Harmonized System?

• a.5 sections
• b.50 sections
• c.3 sections
• d.16 sections✓

A standardized Safety Data Sheet contains 16 sections under the Globally Harmonized System of Classification and Labeling. The sections cover identification, hazards, composition, first aid, firefighting, handling, exposure controls, and more. This uniform format makes information easier to find.

What health hazard is associated with breathing respirable crystalline silica dust?

• a.Improved lung function
• b.Temporary sneezing only
• c.Silicosis, an incurable and sometimes fatal lung disease✓
• d.Better eyesight

Inhaling respirable crystalline silica dust can cause silicosis, an incurable and potentially fatal lung disease, as well as lung cancer and other illnesses. Silica is released when cutting, grinding, or drilling concrete, brick, and stone. Controlling dust at the source is critical to prevention.

Which is an effective engineering control to reduce silica exposure when cutting concrete?

• a.Working faster
• b.Using water (wet methods) or local exhaust ventilation to suppress dust✓
• c.Holding your breath
• d.Cutting in an enclosed room with no ventilation

Wet cutting methods and tools with local exhaust ventilation and vacuum dust collection are effective engineering controls that keep silica dust out of the air. These controls are preferred over relying on respirators alone. Reducing dust at the source protects everyone nearby.

When engineering controls cannot reduce silica below safe levels, what additional protection is used?

• a.A properly selected and fit-tested respirator✓
• b.No protection
• c.A cloth bandana
• d.Sunglasses

When engineering and work-practice controls cannot reduce silica exposure to acceptable levels, a properly selected and fit-tested respirator must be used. Respirators require a program including medical evaluation, fit testing, and training. They supplement, not replace, dust controls.

What is the purpose of a respirator fit test?

• a.To ensure a tight-fitting respirator seals properly to the wearer's face✓
• b.To check the color
• c.To measure the worker's height
• d.To test breathing speed for fun

A fit test verifies that a tight-fitting respirator forms an effective seal against the wearer's face so contaminants cannot leak in. It must be done before first use and periodically thereafter. Facial hair or an improper size can break the seal and defeat protection.

What is the best way to prevent back injuries when manually handling materials?

• a.Lift with a rounded back
• b.Use proper lifting technique, mechanical aids, and team lifting for heavy loads✓
• c.Twist while carrying
• d.Lift the heaviest object alone quickly

Back injuries are prevented by using proper lifting technique, keeping the load close, lifting with the legs, and avoiding twisting. Mechanical aids like carts and hoists and team lifting should be used for heavy or awkward loads. Planning the lift and clearing the path also reduce risk.

What is a symptom of heat exhaustion that workers should recognize?

• a.Feeling energetic
• b.Improved concentration
• c.Heavy sweating, weakness, dizziness, and nausea✓
• d.No symptoms at all

Heat exhaustion symptoms include heavy sweating, weakness, dizziness, headache, nausea, and clammy skin. Affected workers should move to a cool area, rest, and drink water. If symptoms worsen or confusion appears, it may signal heat stroke, a medical emergency.

What are the key elements of preventing heat illness on the job?

• a.Working nonstop in the sun
• b.Wearing heavy dark clothing
• c.Skipping breaks
• d.Water, rest, and shade✓

The key elements of heat illness prevention are water, rest, and shade, along with acclimatization for new or returning workers. Workers should drink water regularly, take breaks in shaded or cool areas, and watch for symptoms in themselves and others. Gradually building tolerance to heat is especially important.

What does an occupational noise exposure program aim to prevent?

• a.Better hearing
• b.Faster work
• c.Louder equipment
• d.Noise-induced hearing loss through monitoring, controls, and hearing protection✓

A hearing conservation program aims to prevent permanent noise-induced hearing loss. It includes noise monitoring, engineering and administrative controls, hearing protection, audiometric testing, and training. Hearing loss from noise is permanent but entirely preventable.

Which pictogram on a chemical label under GHS indicates a serious health hazard such as carcinogenicity?

• a.A smiley face
• b.A dollar sign
• c.A human silhouette with a star-burst on the chest (health hazard symbol)✓
• d.A clock

The GHS health hazard pictogram shows a human silhouette with a star-burst on the chest and warns of serious health effects such as carcinogenicity, respiratory sensitization, or organ toxicity. Recognizing GHS pictograms helps workers quickly understand chemical dangers. Each pictogram has a red diamond border.

What should a written hazard communication program include?

• a.Only a list of employees
• b.A chemical inventory, labeling system, SDS access, and employee training plan✓
• c.Only the company logo
• d.A lunch menu

A written hazard communication program must describe how the employer will maintain a chemical inventory, ensure containers are labeled, keep Safety Data Sheets accessible, and train employees. It ties together all elements of the HazCom standard. The program must be available to workers on request.

Why is it important to keep containers of hazardous chemicals properly labeled?

• a.So workers can identify the contents and hazards and take proper precautions✓
• b.For decoration
• c.To increase the price
• d.To make them heavier

Proper labeling ensures workers can quickly identify a chemical and its hazards so they can handle, store, and dispose of it safely. Labels must include the product identifier, signal word, hazard statements, and pictograms. Unlabeled or mislabeled containers are a serious and common violation.

What is the main hazard of working in a poorly ventilated area with solvents or fumes?

• a.Inhalation of toxic vapors that can cause illness or asphyxiation✓
• b.Better air quality
• c.Stronger materials
• d.Cooler temperatures

Poor ventilation allows toxic vapors, fumes, or gases to accumulate, which can cause illness, unconsciousness, or asphyxiation. Adequate ventilation, respiratory protection, and atmospheric monitoring reduce the risk. Solvent vapors may also create fire and explosion hazards.

What is 'acclimatization' in the context of working in hot environments?

• a.Instantly working full shifts in heat
• b.Gradually building the body's tolerance to heat over several days✓
• c.Avoiding all water
• d.Wearing more layers

Acclimatization is the process of gradually increasing a worker's exposure to heat over about one to two weeks so the body adapts. New workers and those returning from time off are at highest risk before they acclimatize. Many heat fatalities occur in a worker's first few days on the job.

How should hazardous materials generally be stored to reduce risk?

• a.Mixed together to save space
• b.In open buckets
• c.According to compatibility, with incompatible chemicals separated and containers labeled✓
• d.Near ignition sources

Hazardous materials should be stored according to their compatibility, keeping incompatible chemicals such as acids and bases separated to prevent dangerous reactions. Containers must be closed, labeled, and kept away from ignition sources where flammable. Safety Data Sheets provide storage guidance for each material.

What is the purpose of medical surveillance for workers exposed to certain health hazards?

• a.To reduce wages
• b.To increase work hours
• c.To replace ventilation
• d.To detect early signs of illness so exposure can be reduced before serious harm occurs✓

Medical surveillance monitors workers exposed to hazards such as silica, lead, or asbestos to detect early signs of illness. Early detection allows intervention before disease becomes serious or irreversible. It also helps evaluate whether workplace controls are effective.