Definitions Flashcards
What is time weighted average?
The average exposure to a contaminant or condition to which workers may be exposed without adverse effect over a period Such as in a eight hour day or 40 hour week.
What is a cross arm?
It’s located on top of a utility pole. Cross arms keep the line separated by a sufficient distance to prevent arcing.
What is vapor density?
The ratio of the weight of a given volume of gas or vapor to the weight of an equal volume of air at the same temperature and pressure.
What’s or flammable limits?
They are a range of concentrations over which a flammable gas or vapor mixed with air will burn if an ignition source is present.
Chemicals with a narrow flammable range are ______ hazardous than those with _____ flammable range.
Less and broad
Chemicals with a flammable range in the higher percentages are generally _____ hazardous then those with a flammable range in the ____ percentages.
Less and lower
A vital resource during a utility emergency that should be requested early on is what?
The utility company
When given in order to secure utilities what utilities does this normally refer to
Electric and gas
