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Resp 5/6 I
Cylinders
Question | Answer |
---|---|
Oxygen concentration in Air Required for respiration | 21% |
DOT | Department of Transportation Requires cylinders to conform to well-defined specifications |
Critical Tempature of oxygen | -118C |
Critical tempature | the point above which a gas cannot be liquified no how much pressure is applied |
How do you liquify a gas | By pressurizing it |
At room tempature Oxygen is: | Gas |
What is the maximum working pressure | 2200 Normal is 2015 |
* | (next to test date) indicates DOT approval for 10 year testing |
+ | tests passed and the cylinder is approved for filling to 10% above it's service pressure |
Large Cylinders | Use hexagonal nut connections |
Small cylinders | sizes through E |
3 types of pressure relief valves | Frangible (rupture disks)-large cylinders use Fusible plug spring loaded devices |
ASSS- American Standard Safety System | More than 2000psi (on H cylinders therefore Hexagonal) |
PISS- Pin index safety system | less than 2000psi Uses yoke |
DISS- Diamaeter Index Safety system | less than 200 |
Air PISS | 1-5 |
Oxygen PISS | 2-5 |
Duration equation | (cylinder pressure x cylinder factor)/flow rate of gas |
Example of duration equation | E cylinder;flow set at 2L/min; 1000 psi pressure left in tank (1000 psi X .28 factor)/ 2L/min = 140min or 2 hr 18min |
You have Primary, secondary and reserve. What is the reserve supply | Supply in case hospital runs out |
Primary and Secondary are usually in what form | Liquid containers because of their low pressure |
What is the shut off valve called | Zoning |
2 common types of station outlet (on wall) | Ohmeda (ohio) and Chemetron |