Floating Roof Correction Factor

3 2 6 2 floating roof correction frc.

Floating roof correction factor.

You have activated the correction factor. This correction takes into account the material displacement caused by the floating roof of a tank which is dependent on the material density. You have entered the mass of the tank roof. You have activated the correction factor.

You have entered the mass of the tank roof. You have activated the correction factor. 4 2 2 2 rim seal loss factor fr the rim seal loss factor fr can be estimated as follows. Table volume gross observed volume gross standard volume volume correct ion factor multiply minus free water multiply by ctsh plus or minus floating roof adjustment history as previously mentioned api.

Characteristics of the tank and floating roof and are independent of the stored stock liquid. External floating roof tanks of the tank types external floating roof tanks efrts demonstrated the largest change in calculated emissions with a reduction of about 17 table 1 50 502 bytes. The system calculates the correction value when you have done the following. Simply locate a roof rafter board place the end of the level against the bottom edge and measure from the 12 inch mark vertically to the bottom edge of the rafter.

The water present in a container that is not in suspension in the contained liquid oil. For example if you measure 4 inches the pitch of your roof is 4 12. The system calculates the correction value when you have done the following. This gives the gross observed volume gov which is corrected to gross standard volume gsv in the usual manner by applying the vcf.

Environmental protection agency office of air quality planning and standards. Floating roof adjustment fra a secondary correction or adjustment for any difference between the reference density and the observed density at tank temperature when a correction for the roof has been calculated into the tank capacity table using a reference density. The rim seal loss factor kr can be estimated as follows. The correction made to offset the effect of the displacement of the floating roof when no correction has been built into the tank capacity table.

Emission factor documentation for ap 42 section 7 1 organic liquid storage tanks final report for u. This will give you the rise over run or pitch. Fr kr d 3 where kr is the rim seal loss per unit length factor lb mole ft yr d is the tank diameter ft. The system calculates the correction value when you have done the following.

You have entered the mass of the tank roof. Free water fw.