Practice Flashcards
TLV
Threshold Limit Value
TWA
Time Weighted Average
STEL
Short term exposure limit
SDS
Safety Data Sheet
HCS
Health Communication Standard
HIV
Human immunodeficiency virus
A federal standard was adopted to provide information to workers about the materials they are working with and the potential hazards these materials present. The standard is abbreviated:
HCS (Health Communication Standard)
Difficult breathing, dead in minutes
6%
Impaired judgement and breathing
16%
Minimum for safe working
19.5%
Faulty judgement rapid breathing
14%
A __ contains detailed information on each chemical in a specific product
SDS (Safety Data Sheet)
Type II
225 pounds
Type I
250 pounds
Type IAA
375 pounds
Type IA
300 pounds
Type III
200 pounds
Occupational Safety and Health Act
1971
Safe Drinking Water Act
1974
Americans with Disabilities Act
1990
When did plumbing as we know it in the US begin to develop
Mid 1800s
True or False: New York City became the first city in the US to select cast iron for water mains
False
True or False: PVC Pipe began to be practically manufactured during the 19th century
False
In 1775, ___ of England patented the water closet that became the prototype for todays toilets
Alexander Cummings
In 1906, ___ applied for a patent for the flush valve, which made possible the tankless toilet user in most public restrooms
William E Sloan
What size pipe was first used to vent traps in New York City
1/2”
The Greeks major contribution to plumbing was the development of bathtubs with ___
Drains
True or False: the Roman’s used lead to make pipe and line sinks and other fixtures
True
Evidence of ___ has been found in the ruins of Egyptian cities that date back to 1350 BCE
Showers
Plumbum is the Latin word for
Lead
The general idea of ___ drain/waste piping systems was first used in New York in 1874
Venting
Disease traces to contaminated drinking water
Cholera
400-1000 CE
Dark ages
Caused the death of 25 million people
Black Plague
True or False: in the mid-1800s Chicago’s water supply became contaminated from garbage that was being dumped into the Chicago river
False
True or False: The Black Plague was directly connected to the lack of sanitary waste disposal
True
True or False: London’s cholera epidemic in the early 1800s was traced to the lack of personal hygiene
False
The ancient Roman’s were famous for their ___ and public baths
Aqueducts