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Quick solution for leakage at shell of condensate tank
2

Quick solution for leakage at shell of condensate tank

RE: Quick solution for leakage at shell of condensate tank

Have you been closer to the leak than the picture?
What is the design operating pressure?
What is the ACTUAL operating pressure ?
Is the level of condensate expected to reach that level in proper operation?

I'd want to confirm (*) the leakage is not the symptom of a larger problem.

* = be DAMNED sure

RE: Quick solution for leakage at shell of condensate tank

When was the last API 653 In-service inspection?
When was the last API 653 Out-of-service inspection?

"Everyone is entitled to their own opinions, but they are not entitled to their own facts."

RE: Quick solution for leakage at shell of condensate tank

(OP)
The design operating pressure is 5 bar, and the actual one is ranging from 0.5 to 2 bar
Yes the cond level expected to reach in proper operation

RE: Quick solution for leakage at shell of condensate tank

(OP)
Last in service inspection in current year.

Last out service API 653 inspection at 2011

RE: Quick solution for leakage at shell of condensate tank

That's a straight line....indicative of a vertical shell weld that might be failing. I'm with Tmoose....get a closer look and look for bigger problem than a leak.

RE: Quick solution for leakage at shell of condensate tank

My concern would not be that this leaks but that if the vertical seam is compromised you have a potential disaster on your hands. I'd immediately lower the level in the tank to below that entire vert and then get up close and personal with NDE to see what's going on.

RE: Quick solution for leakage at shell of condensate tank

Dear Yahya Omar,

What is the service? Seems gasoline from the attached document. Is it a floating roof tank?

I understand the problem from the management's point of view, in service inspection in current year could not detect any thickness loss as the location is not beside the stairs and the next M&I could be another 4 to 6 years away.

Surely you have lowered the level below the 5th course.

You have to operate the tank at that level and go for shell partial replacement at the earliest if it is a fixed roof tank.

As a temporary measure, you can go ahead with the proposed action (unique polymer system).

If its a floating roof tank, then you have lot of options to choose from.

Regards.



DHURJATI SEN

RE: Quick solution for leakage at shell of condensate tank

2
First thing I would do is check the condition and capacity of the berm.

"Everyone is entitled to their own opinions, but they are not entitled to their own facts."

RE: Quick solution for leakage at shell of condensate tank

It was a "fast solution" by a welder and a corrupt inspector that caused this problem .....

Do you really want another "fast solution" from a bunch of internet strangers ....?

Hope that you quickly drain the tank to a level below the crack....

Come back to us with more detailed photos when the tank (and your plantsite) is made safe.

Has the original tank fabricator been called back to the plant site ? What did he say ????

MJCronin
Sr. Process Engineer

RE: Quick solution for leakage at shell of condensate tank

Dear Yahya Omar,

You did the right thing. How many years after is the next turn-around? Do not extend that, rather take the tank for scheduled M&I earlier, if possible.

Line up contractor, procure plates and get ready for partial replacement of course 5.

Do not forget to do the standard inspections at that time like MFL / LFET of bottom plates, etc.

Also do not waive hydro-test although you could do it as per API 653.

Regards.

DHURJATI SEN

https://www.nace.org/people/dhurjatisen

RE: Quick solution for leakage at shell of condensate tank

I bet Phil Swift could slap some Flex Seal on that...it's a 'fast solution'.

As both MJCronin and IFRs said:
First priority: make it safe (immediate action)

If you have done this; you don't need a 'fast solution'.

MJCronin is right..
The "Fast" solution is to CORRECTLY REPAIR THE VESSEL.
If you buy off on any thing else; you will find out the very hard way that it was not as fast of a solution as you were hoping.

*especially when in the future that liability-train comes rolling in

RE: Quick solution for leakage at shell of condensate tank

Let's see - you have a million asset that putting a 2 dollar band-aid on risks a public disaster. That's worse than putting bald tires on a Jaguar or filling your fighter jet with fuel through a cheap filter. I understand that taking a tank out of service costs money and goodwill but really??? Just do the right thing.

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