WorksheetsNavarro's Welding Final Semester Exam
Total questions: 40
Worksheet time: 3hrs 20mins
When is it acceptable to take compressed gas cylinders into a confined space?
When a permit has been issued
When a safety inspection of the space has been conducted
When the equipment will not actually be used in the confined space just stored there
Gas cylinder and power sources shall be located outside the confined space
If a respirator is worn
What shall be done before lighting the torch for the first time each day?
Leak test the entire system
Purge each hose individually
Only purge the oxygen hose
Only purge the fuel gas hose
Purge both hoses at the same time
In what position is it acceptable to use an acetylene cylinder
The acetylene cylinder may be used if it is laying on its side or upright
The acetylene cylinder may be used if it is at a 45 degree angle or upright
The acetylene cylinder shall be used with the valve end up
There are no limitations on the use of an acetylene cylinder
The requirements for an acetylene cylinder are the same as for oxygen
Acetylene shall not be at a pressure exceeding:
5 psig
10 psig
15 psig
20 psig
To what extent shall the hand wheel of a high pressure (non-liquified) gas cylinder be opened?
Opened not more than one and one-half turn
Opened fully to prevent leakage around the valve stem
Opened not more than three turns
It doesn't matter how much the valve is opened as long as pressure is shown on the gauge.
If the torch handle and hoses are already connected to the regulators, the system must still be?
Turned clockwise
Purged
Turned counter-clockwise
Removed
Which of the following is the correct order of the 3 LAWS for oxy-fuel.
- Torch valves are shut; 2. Tank valves are shut; 3.Reglators are loose and read 0.1
- Tank valves are shut; 2.Regulators are loose and 0; 3. Torch valves are shut
- Regulators are loose and 0; 2. Tank valves are shut; 3. Torch valves are shut.
None of the above are true statements
Plasma cutter uses a/an__________ to heat the metal for cutting.
Flammable gas
High pressure water
Oil under extreme pressure
None of the above
What type of eye protection is required in order to operate a plasma cutter?
There is no specific eye protection necessary
Regular safety glasses
Shade #5 dark safety glasses
Standard sunglasses
Every SDS includes the following EXCEPT:
Exposure controls and Permissible Exposure Limits
First aid measures
Pricing information
Firefighting measures
First-degree burns are
Life-threatening
Very serious burns that extend into the fatty layer of the skin
Painful, dry burns that only affect the topmost layer of skin
Burns that extend into the epidermis and dermis, blistering skin
ANSI suggest that the basic workplace first aid kit includes:
Absorbent compresses and adhesive bandages
Medial exam gloves
Burn treatment cream
All of the above
Eyewash stations should be checked_______.
Monthly
Weekly
Yearly
Daily
There are several different types of poisons and poisonous gases that form when welding. These poisons come from:
Interactions between welding arcs, heat and degreasing/cleaning agents
Specific metals (like lead, cadmium, or chromium)
Paints, coatings, and protective surfaces on metal
All of the above
The No. 1 cause of fumes is _______________.
Heat
Bad weather
Filler metals
Electricity
____________ are not important when it comes to electrical hazards:
Rubber, wood, or dry PPE
Live wires, or completing a circuit
Exposed welding wires
Mishandled electrodes or cracked electrode holders
The three types of light produced in welding operations include:
Photo, UV, invisible
Infrared, visible, ultraviolet
Infrared, invisible, indefinable
Visual, auditory, sensory
The best way to avoid radiation exposure is by__________.
Wearing protective sleeves
Covering your eyes with face protection
Using sunscreen
All of the above
The best way to make sure that your earplugs or earmuffs are on right is by performing:
tug test
hum test
loudness test
all of the above
To prevent slips and falls:
Immediately clean up fluid spills using the appropriate method
Mark slippery areas with appropriate signs.
Be sure that absorbents such as paper towels or rags are store where easily available
All of the above
Most trips are caused by ____________.
Obstructed walkways and clutter on the floor
Horseplay on the jobsite
Clumsy people
Poor walking habits or bad posture
One of the following is NOT a way to prevent repetitive motion hazards
Refusing to perform jobs that you think are too high
Using tools that keep your wrist straight
Switching arms when using heavy tools or equipment
Using floor mats, taking breaks, and rotating tasks
One of the following answers is NOT a potential confined space work area:
Ships, trailers, or other boxed areas
Inside tanks
Pipes, vessels, and tubing
Large warehouse
Which of the following statements about confined spaces is NOT true?
The space is large enough for an employee to work
The space is not intended for continuous human occupancy
The space has a continuous supply of natural air
The space has limited means for entry and exit
Natural ventilation uses primarily ___________.
Fans and ducts
Exhaust systems
Doors and windows
Humidifiers
Which of the following is NOT a form of ventilation?
Air conditioning ventilation
Mechanical supply
Natural air exhaust
Mechanical exhausting
The best way to test for leaks on cylinders is by using soaps and detergents. They shouldn't contain__________, however.
Other types of gases
Oil or greases
Water
Dirt or grime
Manufacturers are required to use clear labeling systems that display the hazards of a substance at a glance.
TRUE
FALSE
A welder can use oil or grease on or around any oxy-fuel apparatus.
TRUE
FALSE
Personal protective equipment should just be used by the welder. Observers don't need PPE's.
TRUE
FALSE
Universal precautions means that you should assume that all blood you find is infectious in nature, unless you can prove otherwise.
TRUE
FALSE
The long term effects of fume exposure are a lot like the flu (including headaches, dizziness, muscle aches, and even vomiting).
TRUE
FALSE
The easiest way to reduce exposure to dangerous fumes is to keep your head out of a fume plume, making sure that you're breathing the cleanest air possible.
TRUE
False
To avoid a gas or fume-related explosion, all tank, pipes, and vessels should be verified "empty," and be thoroughly cleaned, inspected, and tested for flammable residue before a welder begins his work.
TRUE
FALSE
A welder does NOT need to remove rings, chains, necklaces, wristwatches, bracelets, ID badges, and other metallic items (including piercings) before welding.
TRUE
FALSE
AC current is safer for welders to use in hazardous spaces because currents are even, generate less spatter residue, and produce smoother, thinner welds.
TRUE
FALSE
The noise that welding torches make is very high-pitched in nature, which makes it more damaging than other types of sounds.
TRUE
FALSE
It is okay to carry tools and other equipment up ladders, but you should NOT carry them down the ladder.
TRUE
FALSE
You should only use trolleys, mechanical lifts, dollies, or partner lifts if you have extra time.
TRUE
FALSE
Cylinders should be protected from corrosives, excessive moisture, and high temperatures.
TRUE
FALSE
