Re: [MW:6209] PWHT of Bigger diameter & Long vessels

No probblem at all.

When you use Modular furnaces , look at the whether it is electrical heated or fuel fired.

Electrical has nothing to worry.

If it is fuel fired,  place additional temp recorders (thermo couples) on the vessel portion nearer to burner.

Burner may be provided wioth deflector or burner direction need to be examined so that no hot spots develop.

Simialrly farthest portion of vessel will have thermo couples in line with ASME guidelines. As such I do not forsee any problem.

Tagore

On Fri, Jul 30, 2010 at 6:48 AM, suresh venkat <atozsuresh@gmail.com> wrote:

Dear all,

 

we have several equipments of diameter 5mts & above & length 30 mtrs & above. Our specs calls for PWHT in an enclosed furnace.

 

some of our fabricators expressed inability due to furnace size restrictions& informed us that use of Temporary Modular furnaces will pose risk to Quality of final product.

 

I need your advice on the following

 

1. Is doing PWHT in modular furnaces will create any problems to the equipment (in terms of quality)

2. can the temperature be properly controlled

3. Pwht can be performed properly without overheating or Under heating.

 

thanks

 

Suresh

--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding-unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding-unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.