Tricks of the Bunker Trade: Tampering with Gauging Equipment

by Kaivan H. Chinoy, Petro Inspect / The Bunker Detectives
Thursday September 19, 2013

Always verify the condition of the sounding tape. Sounding tapes could be tampered with in many ways:

  1. Deliberate altering of sounding tapes and using wrong size of bobs
  2. Sounding bobs from tapes that have been switched over
  3. Cutting the tape and re-joining resulting in non-lineartape

Key Notes:

  • Check for calibration certificate for the gauging equipment in use
  • Use a ruler to ascertain the precise sounding/ullage when below the 20 cm mark
  • Use own sounding / ullage tapes
  • Pay particular attention to 'millimeter' soundings especially when the tanks are full and taking ullages as small errors will have a big impact on the total bunker quantity.
  • Remember whenever in doubt or have concerns always issue a letter of protest