Dear All,
-- We are going to carry out weld repairs on our Amine regenerator column during shutdown. Repair will be carried out by weld build up due to internal corrosion. At the same time there is a modification in the column we are adding two 12"Dia nozzles. at 1meter higher elevation from the weld repair location. Due to service requirement PWHT is mandatory. In order to reduce shutdown window there is a proposal to carry out carry out PWHT on newly added 2 nozzles and the weld repair location at the same time. Is it allowed to carry out the PWHT at the same time?
At Nozzles PWHT will be carried out by Bulls-eye technique and at the weld repair location PWHT will be carried out by circumferential band heating of the complete column.
Is there going to be any issue with the deformation etc. Kindly share your experience.
the details of the column are as follows:
1. Material: A516 Gr.55
2. Diameter: 4meter
3. Height: 20 meter
4. Thickness: 11mm
5. location of nozzle addition: 4 meter from top
6. location of the weld repair: 5meter from top
Appreciate your advises.
with best regards
Ram Pokala
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/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
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.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
No comments:
Post a Comment