PIPE & TUBULAR
Enerpac Line Stop Actuator For Safe and Reliable Pipeline Intervention
Pipeline operators and specialty hot tapping service companies have a more precise and safer solution in pipeline intervention solutions.
The newly engineered Enerpac LSA Line Stop Actuator Series provides cost- effective isolation of pipelines to allow for maintenance and modifications, avoiding interruption of service and costly shutdowns. Used in conjunction with the Enerpac hot tapping range, the LSA Series applications include tie-ins and line bypasses, for example.
The LSA Series is part of a complete line stopping system. Line plugging
service is ideal for temporary isolation of pipework, allowing repair or modification without the need for plant shutdown or the loss of production or process media. With a focus on safety, the Enerpac LSA series includes an anti-rotation feature that guarantees the folding head and sealing element align precisely with the pipeline during deployment, which is critical to achieve the required seal within the pipeline. The Enerpac control bars mechanically lock out to prevent risk of failure if there is an issue with the hydraulics.
Other benefits include a more durable design to avoid sealing failures and ease of use thanks to the hydraulic control
located at the front end of the unit. When it comes to depth control, deployment for the stopping head can be easily managed utilising the sight glass and increments marked on the bar to control the depth position. The LSA Series is also compatible with other brand’s folding heads and housings making it an ideal replacement for ageing machines.
The LSA Line Stop Actuator Series comprises four models with a plugging head range 10-122cm with a 102 Bar (1480psi) maximum working pressure and 83 deg C maximum working temperature.
Why Rely on a Flanged Connection?
The upstream industry is no stranger to barren times of investment but in 2020 this was coupled in the face of a global pandemic where the pinch and uncertainty was seen Worldwide and industry wide. This considered, there has been a trend over the last number of years for operators to move away from traditional methods of connecting pipework due to – safety concerns, high associated costs, and availability of skilled trades for traditional methods of pipework fabrication.
The mechanical connector has been around for an age, they come in all shapes and sizes with their various advantages but the age old trusted is the traditional weld neck flange. One of the key obstacles associated with flanged connections is their inclination
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to leak over time. This can lead to Technical Safety assessments and the case for area’s to be re-classified. The challenge then becomes how do operators keep a “cold work solution” whilst eliminating the baggage of potential leaks from flanges – Lokring Coupling to the rescue!!!
A Lokring coupling is the only mechanical joint on the market today that is equivalent to a coded butt-weld and is capable of being used in place of two flanges without the need to derate the classification of a zone from a “fully welded” system. The cost/time benefit of using a Lokring coupling over two flanged joints is generally well established within industry.
In 2016 an offshore operator in the North Sea requested assistance from a leading global energy consultancy group to carry out an assessment of Lokring with the view of using the weld equivalent technology on a fuel gas
application offshore. This document was used to fully back up claims made by Lokring, and as justification to carry out the works. Direct quote from the document – “Lokring could be viewed as equivalent to welded pipework, for fuel gas, keeping the area classification as a non-hazardous zone.”
Please consult Lokring UK in their Aberdeen office if you would like to learn more.
q +44 1224 878 877 H
www.lokring.com
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