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This offshore service specification was prepared and published by DNV class society to give readers the criteria for and proper guidance of lifting appliances used in the oil and gas industry within the EEA, i.e. European Economic Area. It falls under the core document DNV-OSS-300. The arrangement of the specification is pretty standard, as it it the case with the specifications covering verification of process facilities, verification of subsea facilities, verification and certification of submarine pipelines and others. Again, the first chapter provides the very general knowledge of the risk-based verification, abbreviations and definitions used throughout the document, info on the verification plans etc.; in addition, this section describes the reports and certificates issued by DNV to the lifting appliances. The "Service overview" section explains the process itself as well as verification documents. The instructions on proper selection of the verification level are also there, supplemented with the trigger questions, explanation of the life cycle of the lifting appliances, some technical terminology, verification documents, use of QMS and some other relevant information.