OSHA 10 Test Answers

The mission of the Occupational Safety and Health Administration (OSHA) is:

To send every worker home whole and healthy every day

Electricity travels in closed circuits, and its normal route is through a conductor. Electric shock occurs when:

Your body becomes part of the circuit

Workers need to take which of the following common-sense steps to protect themselves from falls through skylights and roof and floor openings?

-- Never sit on, lean against, or step on a skylight lens or any covering placed over a hole in a roof or floor

-- Guard or securely cover all holes created or uncovered before leaving a work area

-- Always use a PFAS when working over an unguarded or uncovered opening more than six feet above a lower level

The two steps for avoiding hazards that are always taken before the need for PPE is considered are:

Workplace and engineering controls

The three main scaffold types are aerial lifts, supported scaffolds and:

suspended scaffolds

Because using cranes or derricks to hoist personnel poses a serious risk to the employees being lifted, any cranes and derricks that hoist personnel must:

-- Be placed on a firm foundation and be uniformly level within 1 percent of level grade

-- Move the personnel platform slowly and cautiously and have rotation-resistant rope with a safety factor of 10

-- Have all brakes and locking devices set when the occupied personnel platform is in stationary position

If the use of a power tool can result in flying sparks, metal shavings, wood chips, splashes, or other debris, workers should:

Protect themselves by wearing proper PPE

OSHA defines an excavation as:

Any man-made cavity, depression, trench or cut in the earth's surface formed by earth removal

A training program to teach proper lifting techniques should cover:

-- Knowledge of the basic anatomy of the spine, muscles, and joints of the trunk

-- The use of safe lifting postures and timing

Mechanical demolition refers to demolition using equipment like:

wrecking balls and jackhammers

OSHA's electrical standards are based on:

the NEC

What are the four main types of electrical injuries?

Electrocution, electric shock, burns, indirect (e.g., a fall from a ladder)

A shock's severity depends on:

-- Length of exposure to electricity

-- The amount of current and its frequency

-- The current's path

Electrical burns are the most serious of the three major types of burns, and most often occur:

On the hands, from direct contact with current

Hot wires, ungrounded wires that can cause a shock if you touch them, are usually:

black or red

More than 50 percent of electrocutions are caused by a worker coming in direct contact with:

energized power lines

The OSHA standard requires flexible cords to be rated for:

Hard or extra hard usage

What is the most frequent violation of OSHA electrical standards?

improper grounding of circuitry and equipment

The three elements of a basic program for electrical safety are:

recognize, evaluate and control

All portable electric tools that are damaged shall be:

Removed and tagged "Do Not Use"

If you have a three-prong plug and a two-hole receptacle, it is acceptable to:

Use an adapter with an adapter wire connected to known ground

All hazards involved in the use of power tools can be prevented by following five basic safety rules: Keep all tools in good condition with regular maintenance; examine each tool for damage before use; operate according to the manufacturer's instructions; provide and use the proper protective equipment; and:

use the right tool for the job

Live parts of electric equipment operating at 50 volts or more must be:

guarded against electrical contact

While any employee is exposed to contact with parts of electric equipment or circuits that have been de-energized, the circuits energizing the parts shall be:

Locked out or tagged out or both

Low voltage does not mean low hazard.

true

The two best means of avoiding electrical shock or injury when working with power tools are:

Insulation and grounding

The majority of today's power line accidents occur because:

Of failure to maintain proper work distances

A ground-fault circuit interrupter (GFCI) protects workers from shock by:

Matching the amount of current going into an electrical device against the amount returning from the device and shutting down power if a ground fault is detected

AEGCP's are implemented on construction sites to oversee:

-- All cord sets

-- Cord sets and equipment connected by plug and cord

-- Receptacles that are not part of a building or structure

The OSHA standard mandates that any time a worker is at a height of six feet or more, the worker is at risk and needs to be protected. Most fatalities, however, happen when workers fall from:

Roofs

Employers must ensure that all walking and working surfaces have the structural integrity to:

Support workers safely

Controlled access zones serve a dual purpose - they allow specially trained individuals (such as masons) to operate without traditional fall protection within a certain area, and:

They keep unauthorized individuals out

A system used to arrest a worker in a fall from a working level that consists of an anchorage, connectors, a body belt or body harness, and may include a lanyard, deceleration device, lifeline, or suitable combinations of these is called a:

Personal Fall Arrest System (PFAS)

When no other alternative fall protection has been implemented, the employer shall implement a safety monitoring system. Employers must:

Ensure that the safety monitor is a competent person knowledgeable about fall protection

At holes, guardrail systems must be set up:

On all unprotected sides and edges

The top edge of a guardrail must be from 39 to 45 inches above the walking/working level, and there must also be a means of protection from:

Falling objects between top rail and walking surface

Employers must provide a training program that teaches employees who might be exposed to fall hazards:

How to recognize such hazards and how to minimize them

Safety nets must be strong enough to support workers who fall, and must:

Have small enough mesh openings that employee doesn't fall through net itself

Approximately 75 percent of struck-by fatalities involve:

Heavy equipment such as cranes or trucks

It is preferable not to drive a vehicle in reverse if you have an obstructed rear view, but if you do, make sure:

Vehicle has an audible reverse alarm

Workers are most at risk from falling objects when standing or working:

-- under scaffolds

-- under cranes

-- wherever overhead work is being performed

To prevent injury from flying debris, use safety glasses, goggles, face shields, etc., where machines or tools may cause flying particles; and always inspect tools, such as saws and lathes, to ensure that:

The protective guards are in good condition and firmly attached

Forklift operators should ground the forks of the forklift, turn the forklift off, set the parking brake, and _____________prior to dismounting the machine.

neutralize controls

If a machine has an exposed pulley and conveyor but the portion of it that is exposed is well underneath the machine, the employer:

Must ensure all exposed and accessible sections of the machine are guarded

One who is capable of identifying existing and predictable hazards in the surroundings, or working conditions which are unsanitary, hazardous, or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them is a/n ______________:

competent person

Providing worker training on the safe use of the equipment being operated is the responsibility of the:

employer

To protect against caught-in or -between hazards, a worker should not only avoid wearing loose clothing or jewelry, but also a worker should avoid:

Performing maintenance or adjustment on equipment/machinery that hasn't been locked-out

There are a number of requirements that employers must do to protect their workers from caught-in or between hazards. Which of these is required if the worker's body, hands or clothing may come into contact with moving parts?

Provide guards on power tools and other equipment with moving parts

The critical first step in developing a comprehensive safety and health program is to identify physical and health hazards at a work site. This process is known as:

A hazard assessment

OSHA requires that many categories of PPE meet or be equivalent to standards developed by:

The American National Standards Institute (ANSI)

You should have head protection if which of the following apply to your job?

-- Objects might fall from above

-- There are low-hanging pipes or beams

-- There are exposed electrical hazards

In general, head protection should do which of the following?

-- Resist penetration by objects and absorb the shock of a blow

-- Be water-resistant and slow burning

-- Have clear instructions explaining proper adjustment and replacement of the suspension and headband

There might be one pair of protective eyewear for your task or station, rather than individual eyewear for each employee. If this is the approach at your job site, then:

You must clean and disinfect the eyewear between each use

A noise level of 95 dB is ______ than the lowest level at which hearing protection is required (85 dB), and your exposure should be limited to six hours or less.

Ten times louder than

Safety footwear has to meet minimum compression and impact performance standards, set by:

ASTM F-2412-2005

Gloves that are chemically resistant are usually made from:

rubber or plastic

True or False: Full-body protection is sometimes made from materials such as duck, paper-like fiber, or rubberized fabrics, depending upon the hazard.

True

Before the start of each work shift, it is mandatory that:

A competent person inspects the scaffold before the start of each work shift

The first step in building a scaffold is to:

Conduct a site inspection

A scaffold must be erected "plumb, square, and level," because:

If a scaffold is built even a few degrees off plumb, the resulting instability could cause the weight of the scaffold to shift, potentially causing the overloading of one leg and the eventual collapse of the scaffold

OSHA 1926.454(c) states: When an employer has reason to believe that an employee lacks the skill or understanding needed for safe work involving the erection, use or dismantling of scaffolds, the employer shall:

Retrain each such employee so that the requisite proficiency is regained

When dismantling a scaffold, all work should be conducted:

From the top down

Tube and coupler scaffolds over 125 feet high must be designed by:

registered professional engineer

What type of scaffold - other than the tube and coupler scaffold - is ideal for use around complex structures?

a system scaffold

This scaffold is simply a rope attached to a harness with an assembly like a boatswain's chair for the worker to sit in.

Suspension scaffold

If a worker on a scaffold can fall more than 10 feet, they must be protected by guardrails and/or personal fall arrest systems (PFAS). The type of fall protection required will depend upon:

The type of scaffold

The four main causes of crane accidents are contact with power lines, overturns, falls and mechanical failure. Two other errors mentioned in this module that often lead to trouble are:

Improper maintenance and failure to conduct regular inspections

No modifications or additions that affect the capacity or safe operation of a crane or derrick should ever be made without:

The manufacturer's written approval, which should be kept on file

Truck-mounted and rough terrain cranes are both forms of a mobile crane, and both use which of the following to increase their stability?

outriggers

Rated load capacities, recommended operating speeds, and special hazard warnings or instructions must be:

Conspicuously posted on the crane, where the crane operator can see them while he is at his control station

The four lifting principles that govern a crane's mobility and safety during lifting operations are:

Center of gravity, leverage, stability and structural integrity

Employees working in the vicinity of a crane must take care to avoid what kind of accident?

"Struck by"

Personnel hoisting platforms must be designed by:

A qualified engineer, or another competent specialist qualified in structural design

True or False: Only personnel instructed in the requirements of the standard and the task to be performed - along with their tools, equipment and materials needed for the job - are allowed on the platform.

True

If the hoist tower is not enclosed, the hoist platform or car must be totally enclosed on all sides for the full height between the floor and:

The overhead protective covering

The greatest hazards posed by hand tools result from:

misuse and improper maintenance

Power tools should never be carried by the cord or hose or be yanked from a receptacle by the cord or hose; and cords and hoses should be kept away from:

Heat, oil, sharp edges

Sharp, abrasive, pinching, or otherwise hazardous moving parts of power tools:

Must have protective guard to prevent contact with workers

Before an abrasive wheel is mounted, it should be inspected closely and:

Sound- or ring-tested to ensure that it is free from cracks or defects

Neither the operator nor anyone else should ever stand directly in front of the wheel of an abrasive power tool as it accelerates to full operating speed. Why?

Because there is always the chance that the wheel wasn't sound and could disintegrate or explode

Pneumatic tools are powered by:

Compressed air

Powder-actuated tools are extremely dangerous, with a "firing" mechanism similar to that of:

A loaded gun

If a powder-actuated tool misfires, the employee should:

Wait at least 30 seconds, then try firing again

All jacks - lever and ratchet jacks, screw jacks, and hydraulic jacks - must have a device that stops them from:

Jacking up too high (a stop indicator)

OSHA defines a trench as:

A narrow excavation made below the surface of the ground in which the depth is greater than the width - with the width not to exceed 15 feet

True or False: There is usually some form of warning before a cave-in.

False

OSHA requires that all excavations in which employees could potentially be exposed to cave-ins be protected by one or more of the following three methods:

Sloping, benching, shoring, shielding

The formula for all simple slope excavations 20 feet (6.11 meters) or less deep states that for every foot of depth, the trench must be excavated back:

1 and 1/2 feet

Trench boxes or shields must be designed or approved by:

a registered professional engineer

Shoring or shielding is most often used when:

The location or the depth of the excavation makes sloping back to the maximum allowable slope impractical

As mentioned in this module, in addition to cave-ins and related hazards, workers involved in excavation work also are exposed to hazards involving:

Falls, falling loads and mobile equipment

Employees are prohibited from working above other employees on the face of a sloped or benched excavation unless:

Workers on lower level have overhead protection from falling objects

To prevent surface water from entering an excavation and to provide adequate drainage of the adjacent area, OSHA standards require the use of:

Water removal equipment, diversion ditches, dikes, or other suitable methods

In the case of materials handling, storage, use and disposal, remember that the main hazards are injuries from:

-- Improper lifting and carrying

-- Being struck by materials or caught in pinch points

-- Being crushed by improperly stored materials

Because the number of injuries from operating powered industrial trucks was on the rise, the OSHA standard for Powered Industrial Trucks was revised March 1, 1999. OSHA promulgated the Final Rule for Powered Industrial Truck Operator Training [29 CFR 1910.178(1)], which:

-- Requires operator training and licensing as well as periodic evaluations of operator performance

-- Requires operators to take and pass a written and road test (similar to a driver's education) before they can operate the forklift.

Operators must complete three separate aspects of powered industrial truck training: formal training, practice training, and:

Evaluation

To adhere to fire safety precautions, flammable and combustible materials must be stored according to:

Their fire characteristics

General safety principles that can help reduce workplace accidents include:

-- Work practices

-- Ergonomic principles

-- Training and education

Material handling tasks should be designed to minimize _________ of the given activity.

-- the weight

-- the range of motion

-- the frequency

Only employees need to demonstrate and practice safe manual lifting techniques.

false