Over - Perm
- Overall scope of work
- Overcurrent relay with inverse time/current relation
- Overflow to grade
- Overhaul
- Overtaking lane
- Overview Map
- Packaged 6/0.4 kV transformer substations for tri-ethylene glycol regeneration units
- Packaged switchgear
- Packages of detail design
- Paper Insulated/Lead Covered
- Parallel Earthing Conductor
- Parsons Overseas Company in Kazakhstan
