This part of ISO 12917 specifies a method for the calibration of horizontal cylindrical tanks having diameters greater than 2 m by means of internal measurements using an electro-optical distance-ranging instrument, and for the subsequent compilation of tank-capacity tables.
GSO ISO 12917-2:2008 history
2008GSO ISO 12917-2:2008 Petroleum and liquid petroleum products - Calibration of horizontal cylindrical tanks - Part 2: Internal electro-optical distance-ranging method