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Protection of plant personnel - flange connection safety sleeves

Protection of plant personnel - flange connection safety sleeves

The reliability of flange connections can be ensured by an active or passive approach.

The active approach means a systemic solution for the tightness of flange connections. It is the creation of standards for the assembly of flange connections.

The aim of developing standards for the installation of flange connections is to achieve controlled reliability of sealed flange connections during their operation. The flange connections are expertly designed and have calculated tightening torques in accordance with EN 1591-1 with proof of tightness. Subsequently, their controlled installation by trained personnel in accordance with EN 1591-4 for the installation of flange connections was carried out. For more information see Comprehensive solution

A passive approach to protecting flange connections and fittings in the event of sudden failure is the use of Power®Seal EnviGuard safety sleeves. Flange and fitting safety sleeves prevent serious injury or death to employees who are in the vicinity of a media (e.g. steam) spout from a leaking joint. Safety sleeves are made in one piece and completely protect the flange joint or valve (outside of the valve control).

Safety sleeves can be divided into "soft" and "hard". They are made of special materials. The choice of the type of sleeve and its material design (e.g. 100% PTFE, stainless steel,...) depends on the operating parameters, e.g. for chemical, EX explosive operation, media with high temperature or operating pressures.

The sleeves are tested for the first detection of media spillage, even with repeated use.

Mounting and dismounting of the sleeves is easy. The mounting system allows for repeated assembly while ensuring the declared protection of the flanges.

Lanyards are used to fasten sockets made of soft materials, while locks or screw connections are used for stainless steel sockets. For chemical plants, the sleeves are made of 100% PTFE, including threads and binding cords, which are not subject to degradation due to media or temperature.

The sleeves are manufactured for standard DN PN connections or to order based on the supplied dimensions. Some safety sleeves can be equipped with a medium leakage identifier, a drain hole, can be in transparent design or with a lock.

We will be happy to help you choose the right type of safety sleeve.

A sample of possible applications:

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