BS 7723-3:1994
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Methods for calibration of vertical cylindrical tanks for petroleum and liquid petroleum products Optical-triangulation method
Hardcopy , PDF
01-31-2007
English
01-15-1994
Committees responsible
National foreword
Introduction
1 Scope
2 Normative reference
3 Definitions
4 Precautions
5 Equipment
6 Equipment set-up and procedure
7 Measurement of distance between two theodolite
stations
8 Procedure for internal optical tank wall measurements
9 Procedures for external measurements
10 Tolerances
11 Other measurements for tank calibrations
12 Calculations and development of tank capacity tables
Annexes
A (normative) Computation of internal radii from
internal measurements
B (normative) Determination of the radius of the circle
by the least-square method
C (normative) Computation of internal radii from
reference circumference and external measurements
D (normative) Computation of internal radii from
reference distances between pairs of theodolite
stations
E (normative) Method for calibrating bottoms of tanks
F (normative) Specification for dip-tape and dip-weight
Tables
1 Minimum number of points per circumference for
internal procedure
2 Minimum number of theodolite stations for external
procedures
3 Tolerance on distance between theodolites
4 Tolerance on reference circumference
B.1 Data for example
B.2 Calculated coordinates
B.3 Solution by iteration
Figures
1 Measurement of distance between two theodolites
2 Example of locations of theodolite stations and wall
points for internal procedure
3 Location of horizontal sets of points on tank walls
4 Horizontal angles between sightings on points on tank
wall and the reference axis TL
5 Example of theodolite station locations for external
procedure based on a reference circumference
6 Example of theodolite station locations for external
procedure based on reference distances between pairs
of theodolites
B.1 Circle and coordinates
C.1 Radii from reference circumference
D.1 External radii from reference distances between pairs
of theodolite stations
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