Guarding, all portable, power-driven circular saws shall be equipped with what?
Guards above and below the base plate or shoe. The upper guard shall cover the saw to the depth of the teeth, except for the minimum arc required to permit the base to be tilted for bevel cuts. The lower guard shall cover the saw to the depth of the teeth, except for the minimum arc required to allow proper retraction and contract with the work. When the tool is withdrawn from the work, the lower guard shall automatically and instantly return to the covering position.

Valve protection caps shall not be used for lifting cylinders from one vertical position to another.
Bars shall not be used under valves or valve protection caps to pry cylinders loose when frozen. Warm, not boiling, water shall be used to thaw cylinder loose

How should compressed air be secured?
In an upright position at all times except, if necessary, for short periods of time while cylinders are actually being hoisted or carried

What distance shall Oxygen cylinders in storage be separated from fuel-gas cylinders or combustible materials (especially oil or grease)?
A minimum distance of 20 ft (6.1m) or by non-combustible barrier at least 5 ft (1.5m) high having fire-resistance rating of a least one-half hour.

Inside of buildings, how shall Gas cylinders be stored?
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?
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.

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?
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?
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?
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.

Working Clearances (voltage)
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
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

Each scaffold and scaffold component shall be capable of support, without failure, what?
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?
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)