General Test Flashcards
Water usage per RV per day
100
Density of a public beach
50sqft per person
Mass gatherings need
1 toilet per 100 people
1 drinking fountain per 500 people
Infection control measures when applying tattoos
autoclave, hand washing, spore tests, universal precautions, biohazard containers
sterilization
the process of making something free from bacteria or other living microorganisms
disinifection
the process of cleaning something, especially with a chemical, in order to destroy bacteria
sanitization
to make clean and hygienic
lyme disease aka
Borellia Burgdorfer
types of ticks
american dog rocky mountain wood deer tick (Ixodes)
Spotted fever aka
Dermacenter variabilis
Dengue fever aka
moszuitoes Aedes aegypti
Breakbone fever
severe bone/joint pain
Symptoms of myiasis in children
a maggot in the nose (blow fly)
shistosomiasis sequence of development
egg, sporocist, moves to lungs, liver….worms, then migrates to veins, produce eggs in feces
Giardia is a
protozoa
Most common infectios agens in swimming pools are
E. coli
Cryptosporidium
Shigella
Which is the slowest acting pool filter
cartridge
The maximum temperature for a hot tub is
104 deg F
sewage treatment sequence
Coagulation>flocculation>sedimentation>filtration>chlorination
How much soil should be used to cover a landfill on a diaily basis?
6 in
Hazardous wastes include
chemical, biological, flammable, ignitable, explosive, corrosive, reactive (oxidizing), toxic, infectious, radioactive
denisity of vapor for Hazwoper is in what units
g/ppm
The Ringleman chart is used to determine
opacity of smoke
A Psychrometer measures
temperature/humidity
The minimum distance between prison beds is
4ft
The allowable noise in dB in prisons is
70 dBA during the day and 45 dBA at night
What is crowding?
<40sqft/person
silicosis is caused by
rock dust
what is the slope of a wheelchair ramp
1:12 maximum
stream pollution zones from source to downstream
zone of degradation > Zone of decomposition > Zone of recovery
what are indcators of polluted water
high dissolved oxygen (BOD demand)
coliforms are indicators of
fecal contamination pollution
what is the time of septic tank retention
1-3 days
what temperature and duration should hospital laundry be dried at?
160-167 for 25 minutes
RCRA
Hazardous Waste (cradle to grave)
CERCLA
superfund
Positive pressure air flow
non infectious
room > hallway
negative pressure air flow
infectious
hallway > room
what is a characteristic of ionizing radiation
no proton
what medium can be used to stop alpha particles?
paper
what medium can be used to stop beta particles
aluminum foil
total time for handwashing
20s
temp for holding eggs
45 degrees F