Static buildup in fuel piping

[cwigg66]

I am designing a short piping run for some Jet A fuel. The run is 50'. I am looking to find out which API spec refers to the max velocity of the fuel in the pipe to minimize static buildup, or other reference which would supply guidance for this application. Is it API 5L? Thanks for helping!

Chris

 

[BigInch]

API 2003- API Recommended Practice 2003, 'Protection Against Ignitions Arising out of Static, Lightning, and Stray Currents".

API 2015- API Publication 2015, "Safe Entry and Cleaning of Petroleum Tanks".

NFPA 77- "Static Electricity".

ISGOTT- International Safety Guide for Oil Tankers and Terminals and the May 1991 addendum extending anti-static precautions to residual fuel oils and other oils.



BigInch-born in the trenches.

http://virtualpipeline.spaces.msn.com

 

[25362]

In jet fuels of high purity (very low-natural conductivity)
either high pumping velocities or the use of microfiltration are capable of producing a high rate of charge separation and static buildup leading to high-energy spark discharges capable of igniting flammable fuel/air mixtures. The hazards of static discharge are particularly severe at very low-ambient temperature conditions.

In some countries (Canada for example) and in particular for military jet fuel grades, static dissipation additives (SDAs) in concentrations of a few mg/L are mandatory.

Besides, as I understand, all jet fuel specs. permit the optional use of SDA by agreement between supplier and user.