Gas Therapy

Published on 01/06/2015 by admin

Filed under Pulmolory and Respiratory

Last modified 01/06/2015

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Gas Therapy

Medical, Laboratory, and Therapeutic Gases and Mixtures

II Flammable Gases

III Nonflammable Gases

IV Gases That Support Combustion

Gas Cylinders

Cylinder types and composition

Cylinder markings: Markings are located at the neck of the cylinder in two groupings (Figure 33-1).

Cylinder size

Cylinder capacities for oxygen

Maximum filling pressure of 3AA oxygen cylinders: 2015 psi plus 10% (2200 psi)

Calculation of duration of flow from oxygen and compressed air cylinders

1. One cubic foot of gas = 28.3 L

2. The volume of gas in liters in a full cylinder = cubic foot volume × 28.3 L/ft3

3. Dividing the aforementioned determined value by the maximum filling pressure of 2200 psi results in the calculation of a factor indicating the number of L/psi:

< ?xml:namespace prefix = "mml" />Factor for duration of flow=(ft3vol)(28.3L/ft3)2200psi=L/psi (1)

image (1)

4. For a D-sized cylinder:



5. L/psi factors for oxygen cylinders

6. Calculation of duration of flow in minutes

Color code for E cylinders (Color coding is mandatory for E-sized cylinders only; other sizes of cylinders are not required to follow any coding system.)

Hydrostatic testing of cylinders

Cylinder stem pop-off valves

Gas cylinder storage and handling

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