1. Exhaust-purge supply
2. Inlet-purge supply
3. 17-way electrical connector
4. Water return connector
5. Water services panel
6. Water supply connector
7. Exhaust support-plate retaining screw
8. Exhaust silencer
9. Electrical services panel
10.Gas services panel
11.Gas-ballast boost supply
12.Shaft-seals purge supply
13.2/3-interstage purge supply