Description

The word “pigs” in Pigs In The Pipe differs from the animal pig concept. They are tools for cleaning various kinds of pipelines. Then why do they call pigs? Because when they clean the pipes, the tools will sound like pigs. So people call them pigs.

Types of EMT Pigs In The Pipe

Foam Pigs

Foam pigs are more simple in structure than other types of pigs.  They are usually made from polyurethane foams. And they are always in a cylinder shape. The bottom of these pigs can be coated with a polyurethane layer or not. Bare foam pigs are good at dewatering. Polly foam pigs are better at cleaning effecent.

Mechanical Cleaning Pigs

Mechanical cleaning pigs have mechanical bodies, which makes them atouter. They pass the pipe with deformation more easily. Usually, they will add some accessories such as brushes, magnetic steel, and a gauging plate. Cup mechanical pigs have better leakproofness, while pigs with discs have better supportability.

Solid Cast Cleaning Pigs

Solid cast cleaning pigs are made from molds. So different molds decide the type of solid cast pigs. Operators select the appropriate type of solid cast cleaning pig based on the pipeline’s diameter, the type of debris, and the cleaning objectives. For example, a pig with a basic design might be used for general cleaning, while one with more aggressive features might tackle tougher deposits.

Flororubber Pigs

Flororubber pigs can work in high-temperature environments. They are usually used for in-pipe wax removal because high temperatures are needed to melt the wax before the pipe can be cleaned.

Pigging Process

The pigging procedure of a pipeline incorporates several stages. Initially, the operator introduces the pig into the pipes. A pig is an apparatus utilized to clean or inspect a pipe. Subsequently, they initiate the pig from the pig launcher. The dynamic pressure of the pipe propels the pig forward. As it progresses, the pig scours over the wall of the tube, eliminating debris and deposits. It can also transport sensors to scrutinize the condition of pipes. This assists in detecting anomalies such as corrosion or blockage. Upon the pig’s completion, the operator retrieves the pig at the pig receiver. Subsequently, they evaluate the collated data and debris. Ultimately, they utilize the findings to strategize maintenance and repairs. Pigging guarantees that the pipe remains clean and functioning optimally.

Pipeline Maintenance

Pipeline maintenance necessitates several crucial strategies to ensure both safety and efficiency. Regular inspections serve a pivotal role in identifying potential issues. Technical personnel employ tools such as ultrasonic detection and X-ray imaging for detailed evaluations. These inspections aid in detecting corrosion, leaks, and structural flaws.

Another vital method is pipeline pigging. Operators insert pigging devices into the pipeline for cleaning and inspection. This process can eliminate debris, and prevent blockages, and accumulation. Moreover, it also provides invaluable data regarding the condition of the pipeline.

Cathodic protection is also paramount in preventing corrosion. This technology necessitates applying a small current to the pipeline. By doing so, it mitigates the electrochemical reactions that lead to corrosion. Regular monitoring ensures the system operates optimally.

Operators must also conduct pressure testing. They increase the pressure of the pipeline to test its strength and integrity. This step aids in identifying weaknesses that could potentially result in failure.

Parameters of Foam Pigs In The Pipe