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NASCLA ACCREDITED EXAM 2024-2025 ACTUAL
EXAM WITH UPDATED QUESTIONS AND VERIFIED
ANSWERS (A GRADE)
Inside of buildings, how shall Gas cylinders be stored? -
ANSWER-In a well protected, well-ventilated, dry location, at least
2 ft (6.1m) from highly combustible materials such as oil or
excelsior. Cylinders should be stored in definitely assigned places
away from elevators, stairs, or gangways. Assigned storage
places shall be located where cylinders will not be knocked over
or damaged by passing or falling objects, or subject to tampering
by unauthorized persons. Cylinders shall not be kept in
unventilated enclosures such as lockers and cupboards.
How shall a regulator to a cylinder valve be connected? -
ANSWER-The valve shall be opened slightly and closed
immediately. (The action is generally termed "cracking" and is
intended to clear the valve of dust or dirt that might otherwise
enter the regulator.) The person cracking the valve shall stand to
one side of the outlet, not in front of it. The valve of fuel gas
cylinder shall not be cracked where the gas would reach welding
work, sparks, flame, or other possible sources of ignition.
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All hose in use, carrying acetylene, oxygen, natural or
manufactured fuel gas, or any gas or substance which may ignite
or enter into combustion, or be in any way harmful to employees
shall? - ANSWER-Be inspected at the beginning of each working
shift. Defective hose shall be removed from service.
When the arc welder or cutter has occasion to leave his work or to
stop work for any appreciable length of time, or when the arc
welding or cutting machine is to be moved, what should happen?
- ANSWER-The power supply switch to the equipment shall be
opened.
Lifelines. Where a welder must enter a confined space through a
manhole or other small opening, what should occur? - ANSWER-
Means shall be provided for quickly removing him in case of
emergency. When safety belts and lifelines are used for this
purpose they shall be so attached to the welder's body that his
body cannot be jammed in a small exit opening. An attendant with
a pre-planned rescue procedure shall be stationed outside to
observe the welder at all times and be capable of putting rescue
operations into effect.
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Working Clearances (voltage) - ANSWER-1. Nominal voltage to
ground, 0-150 = Minimum clear distance for conditions are 3 ft,
3ft, 3ft
2. Nominal voltage to ground, 151-600 = Minimum clear distance
for conditions are 3ft, 3.5ft, 4ft
Minimum Depth of Clear Working Space in Front of Electrical
Equipment - ANSWER-1. Nominal voltage to ground, 601 to
2,500 = Conditions 3ft, 4ft, 5ft
2. Nominal voltage to ground, 2,501 to 9,000 = Conditions 4ft, 5ft,
6ft
3. Nominal voltage to ground, 9,001 to 25,000 = Conditions 5ft,
6ft, 9ft
4. Nominal voltage to ground, 25,001 to 75kV = Conditions 6ft,
8ft, 10ft
5. Nominal voltage to ground, Above 75kV = Conditions 8ft, 10ft,
12ft
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Each scaffold and scaffold component shall be capable of
support, without failure, what? - ANSWER-Its own weight and at
least 4 times the maximum intended load applied or transmitted
too it
Each scaffold unit shall be installed so that the space between
adjacent units and the space between the platform and the
uprights is? - ANSWER-No more than 1 inc (2.5cm) wide, except
where the employer can demonstrate that a wider space is
necessary (for example, to fit around uprights when side brackets
are used to extend the width of the platform)
Each scaffold platform and walkway shall be? - ANSWER-At least
18 inches (46cm) side
The front edge of the platforms shall - ANSWER-Not be more
than 14 inches (36cm) from the face of the work, unless guardrail
systems are erected along the front edge and/or personal fall
arrest systems are used in accordance with paragraph G
