[ikram]

Dear 2M

I would like to explain my problem in points to make it clear.

1. We have 20″ piping of total 6m length. The piping starts from an horizontal equipment and bend down in 2D (2400mm) and moves straight in the direciton of equipment(from which the pipe started) and ends at nozzle of another equipment (5098mm).

2. In the original scheme the lateral expansion bellow is installed in the 2D piping spool to cater for 6mm lateral expansion comming from the equipment.

3. This bellow has leakage history and leaks once in the 10 years.

4. Now we want to remove the bellow and add an expansion loop.

For this i have asked how to design the expansion bellow of larger size.

I think the problem has been cleared in full and now waiting for your kind response. I may also send you the isometric if you provide me your email address.

Best Regards

Ikram

[ikram]

Dear 2M

I was waiting for your response. However, the matter is conculded as; the pipe to pipe connection is assumed to be un-reinforced tee and the SIF inplane and outplane is taken from appendix D of ASME B31.3.

The same values were incoperated in the stress analysis program and needed reinforcement. A pad of 5mm were installed to satisfy ASME B31.3 requirement. Now to implement the same modifiaction in the field, the pad width is required also.

So 2M, can you plaese advice for how much width for the pad(5mm thk) be selected for a pipe of 4″ size and what the standard practice prevails.

Can you plaese provide your email address, if convenient.

Waiting for you prompt response.

Best regards

Ikram

[ikram]

2M

You have discussed very useful information. In my case, can i use the unreinforced tee as stub on connection in flexibility analysis software as per your below discussion and conclude the matter.

Regards

[Author]

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