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SWA with a shroud of mystery

Sergio Fernandez

My understanding is/was that when using an SWA it needs to have a gland on each end for the armoured steel.  Normally/ideally the gland should enter the enclosure from the underside and it would normally have a shroud over the top.  If you take the standard BW or CW (other brands and types are available like Storm Glands).  

While having a discussion recently with a friend who deals with ATEX a lot he said that the shroud would be better not being fitted in a lot of situations.  Take for example a gland that is outside your dwelling where it is exposed to the elements the shroud can get condensation inside and not have a means for draining.  The gland itself is normally OK as mainly made from brass but the Amour of the SWA can start to corrode.  This can also happen is some production environment where there is moisture in the air.

I wonder what thoughts people have about this concept of no shroud for an SWA?

As always please be polite and respectful in this purely academic debate.


Come on everybody lets help inspire the future.

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  • I always thought the shroud was for cosmetic purposes only. If it was important, it would have a better attachment mechanism than a vague friction fit - which can can be pulled back without a tool.

  • in reply to wallywombat

    I am sure a lot of people think the shroud is just cosmetic but as this thread has shown in SOME cases the shroud can cause a danger to a human or conceal/encourage corrosion. 

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  • in reply to wallywombat

    I am sure a lot of people think the shroud is just cosmetic but as this thread has shown in SOME cases the shroud can cause a danger to a human or conceal/encourage corrosion. 

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  • in reply to Sergio Fernandez

    Sergio,

    As you are now thinking and wallywombat said, a shroud really is cosmetic. You will notice in my post the word "Competant" appearing all the time, so what the the designer specify? or did the installer do both design and installation? Either way they should be considering what benefits or indeed negatives fitting a shroud on SWA or braided cable would provide.

    Indoors on a BW  gland without a doubt a chroud tidies things up so cosmetic. On a CW outdoor gland the gland is IP Rated to a level stamped on the gland, so the shroud again is cosmetic? but again what is the material of the gland, brass, etc etc? so does the shroud provide some cosmetic effect and less corrosion where wrong gland materials been used. Negatively shroud on a CW gland outdoors can fill up with water.

    I have already stated why no shrouds typically in a Ex environment either in or outdoors.

    lyledunn, also gave a great insite and like myself seen thousands of corroded glands, enclosures, glandplates and failure of enclosures on water treatment facilities, unfortunately a lot of it falls down to poor design and/or poor selection of equipment and materials outdoors, big enclosures and a lot of issues caused by condensation forming inside the enclosure, that then runs down and settles on bottom glandplate and can permiate thru into the gland thread at that point.

    GTB  

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