Recent content by rogervm

Answering to dcasto In fact we are insulating the shell (bath side) of vessel because we are heating the glycol + water with an electric coil and it is necessary to conserve the heat inside the vessel to vaporize the H2S (piping coil of H2S vaporizer). Thanks.

Thanks to everyone for your valuable answers. Answering to Strider6, It is pure H2S.

This particular case is a H2S Vaporizer that will Vaporize (outlet line) the liquid H2s (inlet line). An evaluation was done to decide that the heat tracing is not required from the process point of view. The H2S liquid line and the H2S vapor line are 316L, and the shell (bath side) of...

In this specific case the operating temperature is 13 C for liquid H2S service, and 38 C for vapor H2S service. This installation is indoor (not heating room) and onshore.

Thank you very much for your answer. I was reading and may the ASTM you are talking about is ASTM C 795. I have other two queations related to this matter: 1.- What material are low chlorides? For example can I use Mineral Wool? 2.- What would be the best cover (finishing) for the insulation...

I need to external insulate some 316L SS and 304L SS pipes, and I dont know what is the best insulation material for that. Is ok to use Mineral wool? or it is required to use an specific material to insulate stainless steel pipes? Thanks is advamce ....

If you have a liquid service, with some quantity of H2S present, How to know when this materials have to meet the NACE requirements? If you have the ppm of H2S and design pressure, There is any figure or table into the NACE Standard that show you the SSC region? I found the figure 1 and figure...

Well Thanks.

Yes I have.

I need help to understand what is mandatory by the ASME Code about Non Destructive Testing (NDT) during the fabrication of pressure vessels. When a technical specification for a Pressure Vessel is prepared, How to know exactly what NDT’s have to be included in that specification as mandatory...

The UW-2a(3), explain how to do when a heat exchanger is designed for a lethal service but just in one side. It says that when only one side of the heat exchanger contains a lethal substance, the other side need not to be built to the rules for a vessels in lethal service if: a) Exchanger...