NEN EN ISO 8311 : 2013

Committees responsible
National foreword
Introduction
Method
1 Scope
2 Normative references
3 Definitions
4 Precautions
5 Equipment
6 Measurement
7 Calculation procedure
8 Calibration tables
Annexes
A (informative) Safety precautions for work in
     membrane tanks
B (informative) Example of calculation of errors for
     a typical membrane tank
C (informative) Example of main gauge table
D (informative) Example of a trim correction table
E (informative) Example of a list correction table
F (informative) Example of correction table for
     expansion/contraction of tank shell
Table
B.1 Errors in measuring lengths, widths and heights
     using a tape measure and rule
Figures
1 Plan view of an intermediate horizontal plane
2 Plan view of an intermediate horizontal plane
3 Plan view of an intermediate horizontal plane
     (trapezoidal tank)
4 Correction of offsets
5 Transverse section view
6 Oblique projection view of tank bottom
7 Transverse section view of tank bottom
National annex
NA (normative) Measuring tapes

Defines a method for the internal measurement of membrane tanks used in ships for the transport of refrigerated light hydrocarbon fluids.