FLAME SAFETY LAMP
| 1. Used for testing oxygen sufficiency or explosive gases in compartments. | 6 – 10% No flame | Less rapid collapse – recovery with prompt treatment. |
| 2. The flame of the lamp indicates by its action the presence or absence of sufficient oxygen to support life. In addition, the flame is affected by explosive gases. | 10 – 16% No flame | Possible collapse but seldom fatal. |
| 3. If action of flame indicates that there are explosive gases, the lamp should be carefully removed and a closer check made with an explosive meter. CAUTION: If there’s possibility of air containing acetylene or hydrogen the flame safety lamp should not be used. |
16 – 18% Dim flame 18 – 21% Increasing flame 21% Bright flame |
Lowered efficiency but usually no collapse. Efficiency slightly below par. Air is normal. |
| Action of Flame | Condition of Air | |
| 4. Fuel for lamp is unleaded gasoline or naphtha. | Goes out rapidly | Lack of oxygen for combustion. |
| 5. Lamp should always be kept in a vertical position. Don’t move lamp suddenly from side to side or up and down. Move it slowly to prevent ignition of explosive gases. | Goes out with slight “Pop” | Concentration of explosive gases. |
| Flares up brightly | Lean concentration of explosive gases. | |
| Flares up and goes out | Rich concentration of explosive gases. | |
| Anytime the flame changes from its normal height and condition remove lamp cautiously and check the air with an explosive meter. |
| % Oxygen | Effect on lamp | Effect on you |
|---|---|---|
| 0 – 1% | No flame | Almost immediate death. |
| 0 – 6% | No flame | Rapid collapse – death is from 6 – 8 minutes. |