Welding Safety Flashcards

1
Q

Light rays are dangerous for what distance?

A

They are dangerous for up to 50 ft including reflections.

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2
Q

What are the 3 types of light rays?

A

Visible Light.

Ultraviolet Rays.

Infra-red Rays.

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3
Q

What are visible Light Rays?

A

Visible light rays are those that you can see. From the source or reflected.

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4
Q

What are Ultraviolet Rays?

A

Ultraviolet rays are invisible. Cause burns to exposed skin and blister eyeballs.

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5
Q

What are Infra-red Rays?

A

Infrared rays are invisible. They penetrate deeply and can cause temperature increases and burns to exposed skin.

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6
Q

What is natural general ventilation?

A

Unlimited fresh air supply, outdoors.

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7
Q

What is mechanical general ventilation?

A

Occurs when air is pumped into the shop, passes through and is vented outdoors through ductwork, doors or windows.

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8
Q

What is local ventilation?

A

Exhaust fans that capture fumes at the source and exhaust them outdoors.

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9
Q

What are the three basic malfunctions you can experience with oxygen equipment?

A

Backfires.

Burnbacks.

Flashbacks.

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