File:Pipeline device.jpg
Summary
A station on a natural gas pipeline used for the loading and unloading of pipeline inspection gauges, commonly known as "pigs". Photographed near Dubendorf, Switzerland.
Additional annotations from the English Wikipedia by users <a href="https://en.wikipedia.org/wiki/User:Cadmium" class="extiw" title="en:User:Cadmium">Cadmium</a>, <a href="https://en.wikipedia.org/wiki/User:Mannings" class="extiw" title="en:User:Mannings">Mannings</a>, and <a href="https://en.wikipedia.org/wiki/User:BrutonD" class="extiw" title="en:User:BrutonD">BrutonD</a>:
This is station for loading or unloading <a href="https://en.wikipedia.org/wiki/Pipeline_inspection_gauge" class="extiw" title="en:Pipeline inspection gauge">pigs</a>, the pigs are used for cleaning out or inspecting pipelines. This station is designed to receive pigs from the upstream section and launch pigs into the downstream section, with a cross-over for the fluid to flow from one section to the next. The pre-installed thrust blocks (those empty concrete rectangles in front of the blank flanges) are to support a (temporary) pig-trap which is bolted on to the pipeline in place of the blind flange. The pig-trap normally includes a section of larger diameter pipe to allow the pig to come to a gentle stop with flow passing around the pig. After closing the valves for isolation, the pig can be removed via a quick opening closure (like a flange) on the end of the pig-trap. The fact the pig-traps are not present means that this pipeline is not pigged regularly.
Licensing
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 14:57, 6 January 2017 | | 1,537 × 1,030 (208 KB) | 127.0.0.1 (talk) | A station on a natural gas pipeline used for the loading and unloading of pipeline inspection gauges, commonly known as "pigs". Photographed near Dubendorf, Switzerland. <p>Additional annotations from the English Wikipedia by users <a href="https://en.wikipedia.org/wiki/User:Cadmium" class="extiw" title="en:User:Cadmium">Cadmium</a>, <a href="https://en.wikipedia.org/wiki/User:Mannings" class="extiw" title="en:User:Mannings">Mannings</a>, and <a href="https://en.wikipedia.org/wiki/User:BrutonD" class="extiw" title="en:User:BrutonD">BrutonD</a>: </p> <i>This is station for loading or unloading <a href="https://en.wikipedia.org/wiki/Pipeline_inspection_gauge" class="extiw" title="en:Pipeline inspection gauge">pigs</a>, the pigs are used for cleaning out or inspecting pipelines. This station is designed to receive pigs from the upstream section and launch pigs into the downstream section, with a cross-over for the fluid to flow from one section to the next. The pre-installed thrust blocks (those empty concrete rectangles in front of the blank flanges) are to support a (temporary) pig-trap which is bolted on to the pipeline in place of the blind flange. The pig-trap normally includes a section of larger diameter pipe to allow the pig to come to a gentle stop with flow passing around the pig. After closing the valves for isolation, the pig can be removed via a quick opening closure (like a flange) on the end of the pig-trap. The fact the pig-traps are not present means that this pipeline is not pigged regularly.</i> |
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