Several exchangers are having tube failures due to 'wet steam'eroding impingement plates and consequently tube failure follows.
The steam inlet nozzle is 4"nb and is therefore very difficult to repair impingement plate.
Is it possible to fit a 'diffuser' within the nozzle.
If so,does a...
our inspection requirement is to 'spark test' a carbon steel
rubber lined tank..
Unfortunately the rubber is now conductive due to long term exposure of Phosphoric acid.
This results in positive response from testing eqipment.
Has anybody experienced this and is there a different approach.
We are experiencing recurring failure on tube-ends resulting from erosive action of quench water being redirected at velocity from division plate on channel end.
Does any one have experience of providing 'sacrificial' barrier on tube sheet and including 25mm. into tube bore.
Tubes are tube-end...
The plate material for this amine stripper is A516-grd70.
38mm.thk. (presumably laminated)
The bottom of this column has blistering which has cracked.
The blisters are contained in a band approx 12feet (circumferentially) x 3feet blisters are linear (top and bottom) each blister being...
I have been asked to consider the inclusion of "emergency foot valve" in a storage tank (BS2654) which will contain Hydrogen peroxide.
Why is this and how will it operate. It is to be manually operated from top of tank.
I have a situation where 57mm.thick.cs. nozzles will be welded to vessel(set-on type) which is also 57mm. thk.(cs.)
It has been suggested that somewhere in ASME V111 div.1 or 2. it is possible to avoid pwht.
these nozzles are new nozzles which will be welded in-situ.
Does anyone know if there...
BS4994 requires pvc lining of GRP tanks to be radiused at intersection between tank wall and floor.
With a sloping base(floor) it is very difficult to fabricate such a radius on pvc liner.
One fabricator overcomes this difficulty by providing square edge (shell to base) configuration.
Does...
