Pipeline Integrity Gauges, commonly known as “pigs,” are essential devices used for cleaning, inspecting, and maintaining pipelines to ensure peak performance. At the heart of any effective pigging program is the pig launcher, which facilitates these critical operations.
A pig launcher is a specialized instrument designed to safely insert a pipeline pig into a pressurized line. It is a vital component for ensuring that pigging processes are both safe and efficient.
Selecting the appropriate equipment is paramount. This guide provides an overview of the available options and benefits, assisting you in choosing the best solution for a clean and debris-free piping system.
Key Equipment Components
The infrastructure required for pigging operations allows for the secure introduction and removal of pigs:
- Pig Launcher: This is the primary barrel where the pig is loaded before being launched into the pipeline. It typically includes various control valves and a quick-opening closure for easy access.
- Pig Receiver: Situated at the conclusion of the pigging run, this barrel catches the pig along with any collected debris. Like the launcher, it features a quick-opening closure for retrieval.
- Kicker and Bypass Lines: Kicker lines use a portion of the product flow to propel the pig from the launcher. Conversely, bypass lines in receivers ensure that product flow remains uninterrupted while the pig is being processed.
The Strategic Importance of Pig Launchers
Acquiring a high-quality pig launcher is a strategic investment in asset protection and operational ROI. The advantages include:
- Enhanced Flow and Productivity: Removing scale, wax, and debris buildup minimizes friction and flow restrictions, thereby increasing overall throughput.
- Lower Operational Expenses: Pigging helps recover product and reduces the necessity for manual cleaning shutdowns, leading to cost efficiencies.
- Improved Safety Standards: Equipped with pressure relief devices and rapid-access closures, modern launchers mitigate the risks inherent in high-pressure environments.
- Effective Product Batching: Pigging allows different products to be transported through the same line by maintaining clear separation, ensuring purity and preventing contamination.
Customization Options
Pig launchers are customized to meet specific operational requirements and pipeline dimensions. Important considerations include:
- Design Codes: Standards such as ASME B31.3, B31.4, B31.8, or Section VIII Div.1.
- Sizing and Pressure: The major barrel must accommodate the pig, while the minor barrel matches the pipeline diameter. Units can support pressure ranges up to 4000 PSIG.
- Materials: While carbon steel is common, stainless steel is often used for sanitary or corrosive applications to maintain media integrity.
- Automation Levels: Options range from manual systems to fully automated, remote-controlled units that enhance safety and allow for more frequent maintenance.
Essential Information for Quotations
To provide an accurate quote for a launcher or receiver, we require the following:
- Intended use (liquid or gas) to determine the proper design code.
- System operating temperature and pressure.
- Requirements for support legs or specialized finishes (default is shop primer).
- Any unique requirements or preferences for closure location.
Optimizing with Specialized Features
Consider these features for enhanced performance:
- Quick-Opening Closures for rapid access.
- Instrumentation ports, vents, and drains for monitoring and cleaning.
- Bypass lines for continuous operation during maintenance.
Sweco Fab. Inc. Technical Capabilities
| Category | Specifications |
| Design Codes | ASME B31.4, B31.8, B31.4 & Sec. VIII Div.1 |
| Materials | CS, LTCS, SS 304, SS 316 & API 5L Pipes |
| Pressure & Size | Up to 4000 PSIG; 2″ NPS to 48″ NPS Lines |
| Max Skid Size | 8′ x 40′ x 10′ (Up to 40,000 Lbs) |
| Certifications | ASME U & R Stamp, ISO 9001 |