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SUSPECTED THERMAL LEAK IN THE BUTANE TANK (DOUBLE WALL TANK)

SUSPECTED THERMAL LEAK IN THE BUTANE TANK (DOUBLE WALL TANK)

SUSPECTED THERMAL LEAK IN THE BUTANE TANK (DOUBLE WALL TANK)

(OP)
Good morning everybody,

We have in our industrial plant a butane double wall storage tank with technical data as fellow:

- Volume of tank is 70.000 m3.
- The operating temperature is –40°C.
- Inner tank is made of steel and outer tank is made of concrete.
- The tank is in operation phase.

At this time, we suspect a thermal temperature leak according to the indications of the temperature probes installed in the wall of the tank.

Please , what could be the possible codes applicable in this case.

Thanks in advance for your assistance.
R. B

RE: SUSPECTED THERMAL LEAK IN THE BUTANE TANK (DOUBLE WALL TANK)

Is this the same tank as this one?? http://www.eng-tips.com/viewthread.cfm?qid=390868

Same questions apply - what is insulation?, what are temperatures - -40 inside to - 3 in concrete looks Ok to me

What is monitoring of the annulus - pressure? - Gas detector?

Do you mean cause or code? - Code will be written in your design data.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

RE: SUSPECTED THERMAL LEAK IN THE BUTANE TANK (DOUBLE WALL TANK)

(OP)
Good morning sir,

Thank you for your reply,

In response to your message, please find below my clarifications:

1) Insulation: PERLITE
2) temperature is inside the tank: -5°C
3) in annulus space we monitor the leak detection by thermal sensors.

My question is: Can I use BS 7777 std for this monitoring?

Thanks in advance,
B.R

RE: SUSPECTED THERMAL LEAK IN THE BUTANE TANK (DOUBLE WALL TANK)

It is now BS EN 14620.

I can't work out how the temperature "inside the tank" is only minus 5 if you're storing liquid butane at very low pressures - it was minus 40 in the post above....

please explain and provide a proper cross section of this tank so we can understand what it is made of, where the temperature sensors are and why you think there is a leak.

Or are you talking about a "cold spot" where the perlite insulation isn't as good??

The question is vague and confusing so that's the answer you get.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

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