Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
30 Cards in this Set
- Front
- Back
|
What are the characteristics of the Pin Index Safety System?
|
- E cylinders & smaller
- high pressure (greater than 200psi) - yoke & pin connections - Oxygen 2-5 position - Air 1-5 position - CO2 1-6 position |
|
|
What are the characteristics of the American Standard Safety System?
|
- larger than E cylinders
- high pressure - nipple & threaded nut |
|
|
What are the characteristics of the Diameter Index Safety System?
|
- low pressure (less than 200psi)
- all connections are after the regulator - threaded nut & nipple |
|
|
What are the flammable cylinder gases?
|
- ethylene
- cyclopropane |
|
|
What are the non-flammable cylinder gases?
|
- nitrogen
- CO2 - Helium |
|
|
What are the cylinder gases that support combustion?
|
- Oxygen
- Oxygen mixtures - Nitrous oxide |
|
|
What are the Oxygen mixtures?
|
- helium/oxygen (heliox)
- oxygen/CO2 (carbogen) - oxygen/nitrogen - oxygen/nitrous oxide |
|
|
What are the qualities of oxygen?
|
- colorless
- odorless - tasteless - fractional distillation |
|
|
What is the atomic weight of oxygen? molecular weight?
|
16g; 32g
|
|
|
What is the critical temperature of oxygen?
|
- neg. 118 C or neg.181 F at 49.7atm
- above this temperature, it cannot remain a liquid |
|
|
What are the cylinder markings found on the front of a cylinder?
|
- DOT-3AA 2015psi (these are DOT specifications & service pressure
- serial # - ownership markings - manufacturers mark |
|
|
What are the cylinder markings found on the backs of cylinders?
|
- original hydrostatic testing
- specifications - retest dates - inspectors mark & specifications |
|
|
How much pressure are cylinders filled to?
|
- cylinders are filled to 5/3 maximum pressure every 5-10 years (hydrostatic testing)
|
|
|
What does the DOT marking on a cylinder refer to?
|
- insures that the tank conforms w/ DOT specifications for compressed gas cylinders
|
|
|
What does the 3AA marking on a gas cylinder refer to?
|
- indicates grade of steel (3AA required for medical)
|
|
|
What does the 2015psi marking on a gas cylinder refer to?
|
- maximum filling pressure (may be exceeded by 10%)
|
|
|
How much can pressure can a gas cylinder be overfilled by?
|
10% to hold 2200psi
|
|
|
What does the duration of flow in minutes equal?
|
duration of flow in minutes= tank pressure*tankfactor/liter flow
|
|
|
What are the tank factors for O2 duration of flow?
|
E= 0.28
G= 2.41 H= 3.14 |
|
|
What are tank factors used to calculate?
|
- absolute duration times; however, in practice a safety factor must be utilized to insure no interruptions in gas therapy to the patient
|
|
|
What are the E, G, & H cylinder capacities?
|
E= 616 liters @ 2200psig (22ft3)
G= 5308 liters @ 2200psig (187ft3) H= 6908 liters @ 2200psig (244ft3) |
|
|
What is important to know about cylinder handling?
|
- keep in carrier or stand
- no flames/smoking nearby - proper technique in attaching regulators |
|
|
What is the proper technique for attaching regulators?
|
- remove cap
- turn gas on momentarily (away from people) "cracking" the cylinder (ALWAYS ANNOUNCE LOUDLY!) - place and tighten regulator (at eye level) - turn on gas - adjust flow - bleed off pressure when not in use |
|
|
How should a cylinder be stored?
|
- store w/ cap on to prevent breaking stem (large cylinders)
|
|
|
How should a cylinder be tested?
|
- every 5-10 years
- water displacement measured to check for expansion with 5/3 maximum pressure |
|
|
What are the 3 general types of gaseous bulk systems?
|
- standard
- fixed cylinders - trailer units (2200psi) |
|
|
What are the characteristics of a standard gaseous bulk system?
|
- large H or K size cylinders banked inot a manifold system
- primary bank - reserve bank (automatically switches to this when primary system drops to a preset lower pressure limit |
|
|
What happens when 6 or more cylinders are manifolded together in a standard gaseous bulk system?
|
- alarms are activated when reserve switches on or malfunction occurs; cylinders are replaced as needed
|
|
|
What are the characteristics of fixed cylinders in gaseous bulk systems?
|
- large bank of permanently fixed cylinders (up to 75)
- refilled on site by a liquid O2 truck that converts the liquid into gas to fill tanks |
|
|
What are the characteristics of trailer units (2200psi) in a gaseous bulk system?
|
- very large cylinders mounted on trailers towed to a central location for connection
- when low or in need of maintenance, replace w/ fresh trailer |
