How to hydrotest the tank designed to storage liquid SG=1.5
How to hydrotest the tank designed to storage liquid SG=1.5
(OP)
I am working on the design of a tank in according with API 650 to storage some chemical with SG = 1.5.
I just doubt how can I hydrotest it?
Can I use some other liquid such as salt water etc?
I doubt the corrosion problem caused by salt water.
Thanks
I just doubt how can I hydrotest it?
Can I use some other liquid such as salt water etc?
I doubt the corrosion problem caused by salt water.
Thanks





RE: How to hydrotest the tank designed to storage liquid SG=1.5
RE: How to hydrotest the tank designed to storage liquid SG=1.5
The SG of product inside the tank is about 1.5.
It is for petroleum plant, however it is not used to storage petroleum product.
Do you have another ideas?
RE: How to hydrotest the tank designed to storage liquid SG=1.5
Joe Tank
RE: How to hydrotest the tank designed to storage liquid SG=1.5
A similar situation occurs when you add corrosion allowance. The hydrotest will stress the as-built shell higher than a light petroleum product will, but likely still won't reach the design stresses due to the extra material.
If the contents were especially hazardous, you could increase RT as Joe suggested. If it was a very small tank, you could actually overfill and/or pressurize the tank. You could add 50% extra shell height as freeboard, and then operate at 2/3 the shell height, but I've not seen this actually done in practice. The problem then is that somebody somewhere is likely to fill the tank up beyond the 2/3 point anyway, so you may be creating a hazard rather than reducing it.
RE: How to hydrotest the tank designed to storage liquid SG=1.5
And for hazard situation, an overflow nozzle might solve the problem.