Cutting Chapter 1 Flashcards
Accidents are often caused by…
conditions at the job site
As quitting time approaches, people are more likely to….
hurry, possibly taking risks they might not other wise take.
When do workers often slow down?
Right after a meal such as lunch.
What must you never wear during welding?
Polyester and other synthetic materials, sparks will melt these materials on your skin.
What offers the most protection?
Full jackets
A cape is cooler but what protection does it only offer?
Shoulder, chest and arm protection
The most common form of hearing protection used in the industry is?
Disposable earplugs
What can cause eye fatigue and mild burns to the skin?
Oxyfuel cutting and welding
Why does Oxyfuel cutting and welding cause such conditions?
Infrared heat radiated by the process and any kind of welding produce UV radiation.
What is something bad UV radiation can cause?
Severe burns to the eyes, including permanent retina damage and severe skin burns.
The exhaust hood should be kept how many inches from the source of the fumes.
4-6
When can the cartridge no longer remove the contaminent?
When the wearer detects any taste or smell, that means the cartridge had reached the capacity.
What procedures must be followed when selecting the proper type of respirator for a particular job?
Local and OSHA procedures
How must a respirator be properly selected?
Based on the containment present and its concentration level.
Properly fitted
Used in accordance with the manufacturer’s instructions.
For safe working conditions, the oxygen levels in a confined space atmosphere must range between what?
19.5-23.5 percent by volume
What is the percentage of oxygen considered normal?
21 percent
When are oxygen concentrations considered deficient?
below 19.5
What is the most common welding accident?
burned hands and arms
What must you use whenever welding is done outside to protect other people from the arc or reflected glare?
Portable screens
An official authorization from the site manager to perform work that may pose a fire hazard.
Hot Work Permit
When do most welding enviroment fires occur?
During oxygen fuel gas welding or cutting.
Oxygen and fuel gas cylinders or other flammable materials must be stored how?
Seperately.
or By 20 ft apart
or by a wall 5 ft high with at least 30 minutes burn rating.
In its gaseous form, acetylene is extremely what
Unstable and explodes easily
acetylene must remain at presures
below 15 pounds per square inch.
What must you do if an acetylene cylinder is tipped over?
Stand it upright and wait at least an hour before using it.
What determines the outcome of an electric shock?
The amount of current that passes through the human body.
When lifting a heavy object what must you do with both your hands?
Distribute the weight of the objects evenly between both hands
When do you need help lifting something large or bulky?
If the object is heavier than you can lift with one hand.
Before work begins, the site should what?
Be surveyed for hazardous materials and unsafe conditions.
What size does the job have to be in order to be evaluated?
Doesn’t matter what size
What hazards should you look at?
Confined Spaces
Unguarded Openings
Possible Electrical Hazards
Enviromental Hazards
Easy ignition of flammable material such as clothes.
> 23.5 percent
Normal
19.5-23.5
Deterioration of night vision, increased breathing volume, accelerated heart beat.
17
Very poor muscular coordination, rapid fatigue, intermittent respiration.
14-16
Nausea, vomiting, inability to perform, unconciousness
6-10
Spasmodic breathing, convulsive movements, and death in minutes.
less than 6
