Safety Materials And Tools Flashcards
How many deep breaths of carbon monoxide at 2% concentration may cause unconsciousness and death in a few minutes
2
At what temperature in Celsius does iron melt
1539 c
What characteristic best describes a rivet Buster chisel
It has one cutting edge and is flat on one side
What shackle is well suited when two slings must be used to lift a load in a bridal sling arrangement
Anchor
What is the definition of hardness
The ability to resist indentation or penetration
The thimble of a metric micrometer is divided into how many graduations
50
How many U-bolt clips are required for 1 inch diameter rope
4
What can be done to ensure no electrical accidents occur on a worksite
Unplug electrical devices when changing attachments
What is the definition of ductility
The ability of material to stretch beyond its elastic limit without breaking or cracking
What is the function of a feeler blade
It is used for measuring clearances between two components
What is the minimum safe lifting angle for slings
60°
Which of the following best describes the web when referring to a drill bit
The center section between the flutes
Should you ever use compressed air to spin dry a bearing?
No
An increase in hardness and strength of a metal because of deformation occurring at low temperatures is called what
Work hardening
Torque of 1 foot-pound is equal to how many newton meters
1.356Nm
Chains in regular use should be inspected how often ?
Daily
The use of spreader bars or equalizer beams provides a sling angle of how many degrees
90°
What color is the star on a class D fire extinguisher
Yellow
What are symptoms of CO(carbon monoxide) poisoning
Headache. Rapid heartbeat. Laboured breathing
If the strands in a rope rotate to the right and wires in the strands rotate to the left you have a
Right regular lay
Safe Working Load in tons
Diameter of wire rope in inches squared times 8
Lever Length X Force =
Torque
