hirschaplin
Petroleum
- Jul 10, 2021
- 61
Sometimes a gas mixture is described as inert, flammable, lethal, explosive, corrosive, inflammable, sour, toxic or oxidizing. Perhaps even more descriptions exist...
I am working on a system where gas mixtures are regularly entered and I want to find a method to automatically, via python, determine whether the entered gas mixture fits any of these describing words.
Here, see example from user-interface for better understanding:
To do this in a good way, I would like to find a definition of each characteristics, preferably from an international standard or similar in order to have a proper reference and explanation to why the gas mixtured was flagged in such a way.
As an example, EIGA DOC 04/18 (§3.2) stipulates the following definition of oxygen enriched environments: "Air and gas mixtures in which the oxygen concentration by volume exceeds 23.5% at sea level or whose partial pressure of oxygen exceeds 175 torr (mm Hg) [3]."
With this definition, I can automatically analyze every entered mixture for this specific criteria and mark it as "oxidizing" but it is perhaps not as simple as that as I know that oxidizing gases also include chlorine, nitrous oxide and some others...
Depending on which characteristic that is then detected for a mixture, the user will be advised to take various actions. For example, if the gas is marked as "oxidizing" then the user will be suggested to proceed with "oxygen cleaning". If the gas is found to be explosive, then the user will be suggested that ATEX regulation apply.... etc.
Any ideas to do this in a smooth way?
I am working on a system where gas mixtures are regularly entered and I want to find a method to automatically, via python, determine whether the entered gas mixture fits any of these describing words.
Here, see example from user-interface for better understanding:
To do this in a good way, I would like to find a definition of each characteristics, preferably from an international standard or similar in order to have a proper reference and explanation to why the gas mixtured was flagged in such a way.
As an example, EIGA DOC 04/18 (§3.2) stipulates the following definition of oxygen enriched environments: "Air and gas mixtures in which the oxygen concentration by volume exceeds 23.5% at sea level or whose partial pressure of oxygen exceeds 175 torr (mm Hg) [3]."
With this definition, I can automatically analyze every entered mixture for this specific criteria and mark it as "oxidizing" but it is perhaps not as simple as that as I know that oxidizing gases also include chlorine, nitrous oxide and some others...
| Gas characteristic | Definition |
|---|---|
| Oxidizing | EIGA DOC 04/18 (§3.2): Air and gas mixtures in which the oxygen concentration by volume exceeds 23.5% at sea level or whose partial pressure of oxygen exceeds 175 torr (mm Hg) [3]. Oxygen >23,5 vol% at sea level or whose partial pressure of oxygen exceeds 175 torr (mm Hg) Nitrous oxide ??? vol% Nitric oxide ??? vol% Chlorine ??? vol% Fluorine ??? vol% Nitrogen trifluoride ??? vol% etc. Calculations as per ISO 10156? |
| Toxic | ?? |
| Sour | ?? |
| Inflammable | ?? |
| Flammable | Calculations as per ISO 10156? |
| Explosive | ?? |
| Corrosive | ?? |
| Lethal | ?? |
| Inert | ?? |
Depending on which characteristic that is then detected for a mixture, the user will be advised to take various actions. For example, if the gas is marked as "oxidizing" then the user will be suggested to proceed with "oxygen cleaning". If the gas is found to be explosive, then the user will be suggested that ATEX regulation apply.... etc.
Any ideas to do this in a smooth way?
