PETROLEUM AND LIQUID PETROLEUM PRODUCTS - CALIBRATION OF HORIZONTAL CYLINDRICAL TANKS - PART 2: INTERNAL ELECTRO-OPTICAL DISTANCE-RANGING METHOD
American Petroleum Institute
API Foreword
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Precautions
5 Equipment
5.1 Electro-optical distance-ranging instrument
5.2 Instrument mounting
5.3 Laser-beam emitter
5.4 Stadia
5.5 Auxiliary equipment
6 General considerations
7 EODR instrument set up within the tank
8 Selection of target points
8.1 Introduction
8.2 Location of target points - General principle
8.3 Cylindrical courses
8.4 Heads
9 Procedure for calibration
10 Tolerances of reference target points
10.1 Distance verification
10.2 Verification of horizontal and vertical angels
11 Additional measurements
11.1 Reference-height determination and reference-point
position
11.2 Data
11.3 Drawings
12 Calculation and development of capacity tables
Annex A (normative) Determination of the limiting angle of
incidence
Annex B (informative) Numerical example
Describes a method for the calibration of horizontal cylindrical tanks having diameters greater than 2 m (6 ft) by means of internal measurements using an electro-optical distance-ranging instrument, and for the subsequent compilation of tank-capacity tables. This method is known as the internal electro-optical distance-ranging (EODR) method.
| Document Type | Standard |
| Status | Current |
| Publisher | American Petroleum Institute |
| ProductNote | Reconfirmed 2012 |
