Surface · Flow Assurance
Pig Receiver
The trap at the end of the line that catches the pig, together with the liquids and debris it pushes ahead.
What it does
Receives the pig after it has swept wax, scale, solids and liquids from the line. The barrel is under line pressure, so it must be fully depressured before the closure is opened.
Basics
| Parts | Barrel, closure, isolation valves, drains, vents, pressure gauge |
| May hold | Condensate and debris |
| Safety | Relieve all pressure before opening |
Common failures
- Closure opened with pressure still in the barrel
Troubleshooting
- Symptom
- Gauge on the barrel does not read zero
- Likely cause
- Trap not fully relieved
- What to check
- Keep venting and draining until the pressure is gone before opening