Calibration of Storage tank

Calibration of Tanks for Petroleum and Petroleum Products to ISO, IP and API Standards

The International Standards Organisation, the Institute of Petroleum and the American Petroleum Institute have a range of standards to cover the calibration of vertical, horizontal and spherical fixed storage tanks as well as rail tankers and barge tanks. The applicable standards are as follows:

VERTICAL TANKS

ISO 7507-1 Strapping method

ISO 7507-2 Optical Reference Line Method

ISO 7507-3 Optical Triangulation Method

ISO 7507-4 Internal Electro-Optical distance ranging method

ISO 7507-5 Optical Triangulation Method

IP 202 Part II Section 1 – Vertical tanks

API 2550 Upright Cylindrical Tanks

API 2555 Liquid Calibration of Tanks

HORIZONTAL TANKS

IP 202 Part II Section 2 – Horizontal and Inclined Tanks

IP 202 Part II Section 3 – Liquid calibration methods

API 2551 Horizontal Tanks

API 2555 Liquid Calibration of Tanks

OTHER TANKS & MISC STANDARDS

API 2552 Calibration of Spheres and Spheroids

API 2553 Calibration of Barges

API 2554 Calibration of Tank Cars

Section 4 Calibration of Spheres and Spheroids

Section 5 Calibration of Ship and Barge tanks

Section 6 Calibration of Road and rail vehicles

ISO 7507-6 Recommendations for monitoring, checking and verification of tankcalibration tables (technical report)