Standards
In 1997, the American National Standards Institute revised its performance standards for hard hats. What exactly the standards are is not publicly disclosed except to paying members. Conformity to these standards and regulation are not necessary but almost all manufactures comply:
- ANSI Type I / CSA Type 1 hard hats meet stringent vertical impact and penetration requirements.
- ANSI Type II / CSA Type 2 hard hats meet both vertical and lateral impact and penetration requirements and have a foam inner liner of expanded polystyrene (EPS).
- A Class E hard hat has been proof-tested to insulate up to 20,000 volts of electrical potential.
- ANSI have compliance for hard hats and their combustibility or flammability criteria.
Read more about this topic: Hard Hat
Famous quotes containing the word standards:
“To arrive at a just estimate of a renowned man’s character one must judge it by the standards of his time, not ours.”
—Mark Twain [Samuel Langhorne Clemens] (1835–1910)
“The things a man has to have are hope and confidence in himself against odds, and sometimes he needs somebody, his pal or his mother or his wife or God, to give him that confidence. He’s got to have some inner standards worth fighting for or there won’t be any way to bring him into conflict. And he must be ready to choose death before dishonor without making too much song and dance about it. That’s all there is to it.”
—Clark Gable (1901–1960)
“Measured by any standard known to science—by horse-power, calories, volts, mass in any shape,—the tension and vibration and volume and so-called progression of society were full a thousand times greater in 1900 than in 1800;Mthe force had doubled ten times over, and the speed, when measured by electrical standards as in telegraphy, approached infinity, and had annihilated both space and time. No law of material movement applied to it.”
—Henry Brooks Adams (1838–1918)