Part 6 – Shaft Sealing
Hydrogen Cooling Shaft Sealing
Activity: Hydrogen Cooling Shaft Sealing
Click the arrows to see images of hydrogen cooling shaft sealing.
Activity: Generator Seal Oil System
Click the ticks on the slider to learn more about generator seal oil systems.
Body Reaction to Alternating Current
| Amount of Current | Effect on Body |
| 1 mA or less | No sensation (not felt). |
| More than 5 mA | Painful shock. |
| More than 10 mA | Muscle contractions; could cause “freezing” to the electrical circuit for some people. |
| More than 15 mA | Muscle contractions; could cause “freezing” to the electrical circuit for most people. |
| More than 30 mA | Breathing is difficult; and could cause unconsciousness. |
| 50 to 100 mA | Ventricular fibrillation of the heart is possible. |
| 100 to 200 mA | Ventricular fibrillation of the heart is certain. |
| Over 200 mA | Severe burns and muscular contractions; the heart is more apt to stop beating than to fibrillate. |
| 1 ampere and above | Permanent damage to body tissues. |