NFPA 30 Insulation requirements

[401laurent]

Hi,
I have to design a 45 000L of Ethanol (95% alcohol) tank,to be installed outside,
for sunny days, we have to insulate the tank.
What is the requirement of the insulation ?, I have checked NFPA30.

Thanks for your help.
Laurent.

 

[trashcanman]

As per NFPA 30: 3) T he insulation shall maintain a maximum conductance value of 4.0 Btu per hr per ft2 per degree
Fahrenheit (Btu/hr/ft2/°F) when the outer insulation jacket or cover is at a temperature of 904°C
(1660°F) and when the mean temperature of the insulation is 538°C (1000°F).

You did not see this?

 

[chicopee]

I doubt very much that it is the temperature values that 401laurent has in mind. I think that the value presented by trashcanman is to protect the tanks from radiant and convective heat transfer due to external fires.

 

[401laurent]

I agree with CHIICOPEE, During the tank operation the temperature never reachs this high value. the tank is only for storage.insulation is required just for limiting sun heat transfer.
thanks.
Laurent.

 

[cdafd]

there may no be a requirement to keep the tank cool from the heat of the day.

Doing a serach of NFPA 30 does not seem to indicate it