Hi,
We have some flange connections within the LPG Storage bunded areas. This is to, in case of leaks the LPG will stay inside the bund. In the event of fire in such a bund, these flanges would be vulnerable to opening, and provide additional flammable material to the fire.
However some people...
Hello,
We have an internal floating roof tank of capacity 3500 barrels and we need to use it for storage of Anhydrous Ethanol.
This tank already has air circulation vents provided on the fixed roof which is above the internal floating roof for breathing in and out during product movement.Also...
Hello,
I know, according to NFPA 86 (Ovens and Furnaces) that we need to install a double block and vent on-off valves in the pipe of fuel gas that will be burned in the heater. That is what we have for Fuel Gas.
But, in adittion, we also burn some sour gas (independent pipe to burner) from the...
Hi,
I have been checking the historical trend (from 2002 to 2008) about the differences between cracked naphtha final boiling point and light cycle oil (LCO) initial boiling point and I found that always the Naphtha End point is lesser than the LCO IBP.
I want to know if this is normal. If is...
Hello!,
Our jet fuel tanks (atmospheric) have circular manholes on the roof (flange covers of 24” diameter). We need to convert them from flange covers to hinged covers in order to facilitate the inspection (through them) of the floating suction pipe (according with API 653, in the Inspection...
Hi,I would like to know about the AIT (autoignition temperature) of heavy cracked hydrocarbons (from a thermal conversion like Visbreaking resid). I was looking for in the NFPA 325 but I have a doubt. I think that the AIT of the Visbraking resid is less thatn the AIT of vacuum or atmospheric...
Hello!
I know that in an external floating roof tank, the minimum-size primary roof drain shall be capable of preventing the roof from accumulating a water level greater than design at the maximum rainfall rate. Normally this primary drain is placed in the central point of the roof and it can be...
Hello,
Do you know what is the recommended jet flood for the following column?
Naphtha Splitter: the gasoline from crude distillation column would go to an splitter, (TBP cut : 95ªC).
We have an existing column, so, I think there is a minimum and a maximun jet flood to consider for reusing...
Hello,
I want to know if somebody knows about installation criteria for piping carrying caustic. I mean, if there is any rule forbidding the layout of caustic lines on the piperack.
I believe that installing the piping at grade is dangerous not only because of the tripping hazard it creates but...
Hi,
Is it recommendable to install a pressure-vacuum valve on an external floating roof tank? We have a gasoline service tank and we need to know about if is neccesary to install that PV valve.
Regards
