Oxygen Test 1 Flashcards
Color of tank holding Air
yellow
Color of a tank holding Helium
Brown
Color of a tank holding Nitric Oxide
Teal & Black
What is the only flammable gas we typically use
Carbon Monoxide
Oversees manufacturing and standards of certain safety systems
Compressed Gas Association
Who creates the purity standards for gasses?
FDA
Who sets up the Industry Standards?
National Fire Protection Agency
What is the constant psi exerted by one atmosphere?
Called “psia” instead of psi and is equal to 14.7 psi
Aluminum tanks are what color?
green and silver
Color of steel tanks
Solid green
What symbol will be found on a tank containing air?
AIR
” + “ marking on a gas tank
means it is approved to be filled 10% greater than its service pressure
What symbol is found on a tank to let you know the testing is good for 10 years?
” * “
Aluminum/Steel tank life
Aluminum is 5 years, Steel tanks are 10 years
During hydrostatic testing, how pressurized is the cylinder inside?
Filled to 5/3
Who creates the color code system for the tanks?
Compressed Gas Association
What 2 marks must be on the gas tanks?
Hydrostatic test date and Test’s mark
Color of oxygen here and the international color for O2
Yellow, internationally it is white
Color of carbon dioxide gas tank
Gray
The HIGHEST temperature that a can remain as a liquid
Critical Temperature
What two gases are liquid at room temperature?
CO2 and Nitrous Oxide
How do Bourdons read the pressure?
Pressure is read by a hollow tube which straightens out accordingly
If occluded, what will happen to the bourdon?
Stays the same or typically will increase
Flow meter preferred for most pt situations
Thorpe
Device that measures both pressure and flow rate
Regulator
psi requirements to use flow restrictor
requires a fixed 50psi source
What is significant about using blenders?
Necessary when delivering a precise FiO2 %
What type of blender is required to power a ventilator or or anything >15 lpm
High-Flow Blender, can handle up to 75lpm
Argon %
0.93%
CO2 % in air
0.03%
Nitrogen symbol
N2
Highest temp for Oxygen to still be a liquid
-118 C **Critical temperature
What is term for the process of turning liquid oxygen to a gas
Fractional distillation
Purpose of zoning valves
to shut off large areas during emergencies/maintenance
Where are zone valves found?
on each floor, each wing, each surgery room and usually each ER room
Adjustable reducing valves typically deliver psi in what range?
0-100psi
D factor
0.16
G factor
2.41
E factor
0.28
Steps to fix a leak
- tighten T-screw
- Change O ring
- Get another regulator
DISS connections are used where psi is what?
Less than 200 psi
Gas concentration of nitrogen in air
78%
Combustion gasses
Oxygen
Nitrous oxide
Nitric oxide
Air
Non-flammable gasses
Nitrogen
Carbon dioxide
Helium
FIO2 of room and compressed air
21%
3A
Seamless, low-carbon, non-heat treated steel
3AA
Seamless, high-quality, heat-treated, high-strength steel
What is measured in hydrostatic testing
Water displacement
Nitrous oxide container color
Light blue
Structures on cylinder valve
Cylinder valve and gas outlet pressure relief valve
Purpose of pressure relief valves
Prevent explosion (keep working pressure)
ASSS differentiation of connections for large cylinders
Internal/external threads
Right/left handed threads
Nipple design
PISS sizes and purpose
AA-E
Prevents use of wrong air
Exact placement of two pins into holes
Pin placements for oxygen and air
O2: 1 & 5
AIR: 2 & 5
Duration flow calculation
Cylinder pressure x cylinder factor / flow rate of gas
Cylinder factor H-K
3.14
Advantages of liquid oxygen
Storage (requires less space)
Shipping in bulk costs less
Components of storage container for liquified oxygen
Inner/outer steel shells separated by a vacuum
Safety system vents O2 if warming occurs
Vaporizer system for O2 (l) -> O2 (g)
Pressure control valve (50 psi)
DISS
Threaded connections: R = normal gas L = combustion gasses
Quick connects: connected wall station outlets
Pressure reducing valve function
Decreases cylinder pressure to set value (usually 50 psi & preset)
Regulator
Reducing valve and flowmeter in one device
Flowmeter
Controls and indicates gas flow delivered to pt
Single stage pressure reducing system
Lowers equipment to working pressure in one step
Multiple stage pressure reducing system
More than one step to achieve working pressure
Preset valves
Delivers specific outlet pressure (usually 50 psi)
Adjustable valves
Can deliver a range of pressures
Thorpe tube flow meter
Hollow tapered tube with ball inside
Gravity reliant
Thorpe compensated tube
Placed after flow
Float measures actual flow of oxygen to patient
If back pressure reduces flow, float reflects
Purity of medical grade oxygen
99%
Max filling pressure
2200
Reserve supply of oxygen
Backup
Direct acting valves prevent
Gas leakage
Bourdon gauge
Measures pressure but reads flow
Not effected by gravity
Flow restrictor
Preset flow
Requires fixed pressure
Testing compensation
Read labels
occlude flow
Ball jumps when plugged in
How to correctly read thorpe
Center of ball
Calculation of blender FiO2
(Air flow x 21) + (O2 flow x 100) / AF + OF
Psig
Pounds per square inch gauge
Direct acting cylinder valve
Prevent gas leakage
Frangible/rupture disks
Pressure release
Buckle under excessive pressure in small cylinders
Fusible plug
Pressure release
Small cylinders
Melt at 208-220 degrees F
Spring loaded device
Pressure release
Release excess pressure and reseal
Larger cylinders
Three safety systems
PISS, DISS, ASSS
Which safety system is used on low pressures of less than 200 psi?
DISS
What safety system is found on larger cylinders?
ASSS
Purpose of pressure relief valve on cylinder valve system
Prevent cylinder rupture
Where is the quick connect used
Hospitals (in wall)
Describe bulk oxygen system in hospital
Transportation
Supply hospital w O2
