EN ISO 19901-5:2016

European foreword
Foreword
0 Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Abbreviated terms
5 Weight control classes
6 Weight and load budget (WLB)
7 Weight control procedure
8 Weight reporting
9 Requirements for suppliers weight data and weighing
   of equipment and bulks
10 Requirements for weighing of major assemblies
11 Requirements for 'as-built' weight documentation
Annex A (informative) - Weight data sheets - Tagged
        equipment
Annex B (informative) - Weighing certificates
Annex C (informative) - Weight and load budget (WLB)
        formats and levels
Annex D (informative) - Major elements of the weight
        displacement
Annex E (informative) - Supplier weighing procedure
Annex F (informative) - Guidelines for displacement
        Measurement of floaters
Annex G (informative) - Requirements for weight control
        during operations
Annex H (informative) - Requirements for topside weight
        estimation - New builds/green field
Annex I (informative) - Executive summary description
Annex J (informative) - Weighing result uncertainty
Annex K (informative) - Weight control database structure
Bibliography

ISO 19901:2016 specifies requirements for controlling the weight and centre of gravity (CoG) by means of mass management during the engineering and construction of structures for the offshore environment. The provisions are applicable to offshore projects that include structures of all types (fixed and floating) and materials. These structures can be complete new installations or the modifications to existing installations. Maintaining the weight control of existing installations is not part of the main body of this part of ISO 19901, but some guidance on this is included in the Annex G.ISO 19901:2016:- specifies quality requirements for reporting of weights and centres of gravity;- specifies requirements for weight reporting;- provides a basis for overall project weight reports or management reports for all weight control classes;- specifies requirements for weight and load budgets;- specifies the methods and requirements for the weighing and the determination of weight and CoG of major assemblies;- specifies requirements for weight information from suppliers, including weighing of equipment and bulk materials for offshore installations.It can be used:- as a basis for planning, evaluating and presenting the client's, contractor's or fabricator's weight management and reporting system;- as a means of refining the structural analysis or model;- as a contract reference between client, contractor and suppliers;- as a basis for costing, scheduling or determining suitable fabrication method(s) or location(s).