Health and safety Flashcards
Supervisors and employees must attend tailgate, safety meetings, at least every
10 days
Management and supervisors must attend, safety meetings, at least every
Month
All health and safety records must be kept for a minimum of
Five years
Health and safety records concerning a long-term health hazard must be kept for
30 years
A serious injury or illness is one in which an employee is
Hospitalized for more than 24 hours, or in which an employee suffers the loss of any member of the body or suffers any permanent disfigurement
Construction of trenches or excavations, 5 feet or deeper that workers must enters, requires obtaining a
DOSH permit
What does DOSH stand for
Division of occupational safety, and health
Employer must make records available to a request request by a worker, or the workers representative within
15 days
Employers must monitor noise, and administer a hearing conservation program when noise exposure is
85DB or more
What is the maximum sound level an employee can be exposed to for eight hours
90 dB
How does the time of noise exposure change with increasing decibels?
For every 5 dB above 90 the maximum on the loud daily exposure decreases by 1/2
For example, an employee can be exposed to 95 dB for only four hours, and 100 dB for only two hours
At what oxygen concentration must air supplying respirators be used
Oxygen concentrations below 19.5%
Working in a confined space, where dangerous air contamination exists requires all of the following
Respiratory protection
A safety harness and retrieval line
One employee standing by with a respirator trained in CPR
One additional employee within sight or call
An effective means of communication between the employees and the standby
Ongoing atmospheric testing
How many toilets are required for a job site?
One toilet must be be provided for every 20 employees or fraction there of
What is a type A fire extinguisher used for?
Ordinary combustibles. Solid materials, such as wood, paper cloth trash.
What is a type B fire extinguisher used for?
Flammable liquids
What is a type C fire extinguisher used for?
Electrical fires. Uses a non-conductive retardance. Once an electrical equipment is deenergized, a type a or type B fire extinguisher can be used
What is a type D fire extinguisher used for?
Combustible metals.
In the USA these extinguishers are painted yellow, not red
Type K fire extinguisher
Used for cooking fires
Buildings three stories or 36 feet in height must have at least
Two stairways
Minimum lighting requirement for all stairways
At least 5 foot candles
Minimum stairway width
24 inches
Minimum and maximum angle of stairways
30 to 50° from horizontal
Maximum height of a stepladder
20 feet
Maximum height of an extension ladder
72 feet
Landing platforms must be provided when ladders are used to climb to heights greater than
20 feet
How to determine the safe pitch of a straight ladder
Place the base of the ladder out from the wall a distance of 1/4 the length of the ladder from the base to the top supports
What is the strongest ladder type and what is it working load
Special duty. IAA 375 pounds.
Ramps must be guarded with standard railings when they are
7 1/2 feet or higher
Construction elevators are required for structures that are
60 feet or more above ground level or 48 feet or more below ground level
Trenches, 4 feet or more in depth require
Ladders placed within 25 feet of any work area
Trenches of 5 feet or more in-depth require
ADOSH permit, if workers required to enter the trench
Use shoring, benching, sloping, or equivalent methods
Excavating materials must be placed at least 2 feet from the edge of the excavation
Trenches, more than 6 feet or more in depth require
Crossings with guard, rails, and tow boards
Trench shoring materials typically consist of
Solid wood sheeting at at least 2 inches thick
Plywood of at least one and 1/8 inches thick
What height must railings be constructed at?
42 to 45 inches high
Safety lines, tethers, and lifelines must be able to support at least
5000 pounds
Safety, lifelines, tethers, and lifelines must be used anytime a worker is exposed to falling more than
7 1/2 feet
A permit from DSH is required for the erection of scaffolds taller than
Three stories or 36 feet
What is the minimum scaffold planking?
2 inches thick 10 inches wide
What is the maximum scaffold height limit for a tube and coupler style construction?
125 feet
Minimum working clearance near high-voltage lines
6 feet for people working
10 feet for boom type equipment in operation
Every vehicle with a body capacity of 2.5 yd.³ are more that hauls construction material must be equipped with
Automatic back up alarm
Cranes Derek and forklifts exceeding a capacity of 3 tons must be certified
Annually
All mobile cranes with booms over 200 feet long, or a capacity exceeding 50 tons must be equipped with a
Load indicating device
When cutting heating or welding, a fire extinguisher of the following type must be kept nearby
Dry chemical or carbon dioxide rated six BC or more
