Travelling Speed of a Floating Roof

[JAS]

Hello everyone,

We have already discussed many times in this forum regarding the Travelling Speed of a Floating Roof. All are generic answers and based on experience.

Iam designing few Tanks and was asked the Travelling speed of the Floating Roof to judge the wear & tear (including for the Seals).

Can anyone throw some light, as how to calculate the Travelling speed (formulas if any), if I have answers for the following:
a) Fill in time
b) Pump out time
c) Maximum fill in rate
d) Maximum pump out rate
e) Tank Circumferential Area

Advance thanks for your help.

Thanks,
JAS

 

[LittleInch]

Well the vertical roof speed is simply volumetric flow in or out divided by square are in the same units.

So if your inflow is 1000m3/hr and your square area is 500m2, your vertical speed is 2m/hr.

I asked this some time ago and effectively determined that there was no speed restriction.

I suspect seal wear is much more responsive to the number of fill/ empty cyces experienced and age of the seal.

Cold temps or extremes of temp probably don't help either , neither does sticky or waxy product



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

 

[JAS]

Thank you LittleInch...