BS ISO 4266-2:2002
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Petroleum and liquid petroleum products. Measurement of level and temperature in storage tanks by automatic methods Measurement of level in marine vessels
Hardcopy , PDF
12-03-2024
English
09-12-2002
1 Scope
2 Normative references
3 Terms and definitions
4 Precautions
4.1 Safety precautions
4.1.1 General
4.1.2 Equipment precautions
4.2 General precautions
4.2.1 Accuracy and performance
4.2.2 Speed of response
4.2.3 Protection from mechanical damage
4.2.4 Manual gauging
4.2.5 Minimum measurable level
4.2.6 Trim and list
4.2.7 Product temperatures
4.2.8 Compatibility
4.2.9 Entrained air and vapour
4.2.10 Vessel motion
4.3 Use of marine ALGs in fiscal/custody transfer
5 Accuracy
5.1 Intrinsic error of ALGs
5.2 Calibration prior to installation
5.3 Initial shipyard adjustment
5.4 Error caused by operating conditions
5.5 Overall accuracy
5.5.1 General
5.5.2 Use of ALGs for fiscal/custody transfer purposes
6 Installation of marine ALGs
6.1 General
6.2 Location of ALG
6.3 Location of manual calibration check point
6.4 Gauging of inerted tanks
7 Onboard verification of marine ALGs
7.1 General precautions
7.1.1 Check for smooth operation of level-sensing
elements - at the shipyard
7.1.2 ALG technology-specific considerations
7.2 Verification by innage gauging or ullage gauging
7.3 Initial verification
7.4 Subsequent verification
7.4.1 General
7.4.2 Agreement between ALG reading and manual
gauge reading
7.4.3 Use of average gauge readings
7.4.4 Adjustment of the ALG
7.5 Verification by alternate methods
7.6 Schedule for regular ALG verification
7.7 Record keeping
8 Data communication and receiving
8.1 Introduction
8.2 Use of remote readout in fiscal/custody transfer
8.3 Telemetry and readout equipment
Annexes
A - Accuracy limitations of marine level measurement
B - Accuracy limitations of marine volume measurement
Bibliography
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