Guidelines for Safe Anchor Handling and Towing文档.pdf

OLF/NSA GUIDELINES FOR SAFE ANCHOR HANDLING AND TOWING OLF/NSA Guidelines for Safe Anchor Handling and Towing No.: 061A Date effective: 25 March 2003 Revision No.: 01 Date revised: 25 March 2003 Page: 2 Contents 1. Introduction 3 1.1 Objective 3 1.2 Application 3 1.2 Responsibilities 3 2. Definitions and Abbreviations 4 3 Planning and execution of anchor handling and towing operations 7 3.1 Preparations and planning of anchor handling 7 3.1.1 Responsibilities of operating company 7 3.1.2 Responsibilities of installation owner 7 3.1.2.1 When vessels arrive on the field (500-meter zone) 8 3.1.3 Responsibilities of AHTS captain 8 3.1.4 Anchoring meeting 9 3.2 Anchor handling operation 9 3.3 Securing anchor on deck 10 3.4 Towing operation requirements 10 3.4.1 General towing rules 10 3.4.2 Planning of towing operation 11 3.4.2.1 Catinary and towline load curves 12 3.4.3 Towing operation 12 4.4 Reporting 12 4 Equipment requirements 13 4.1 Permanent chaser pendant (PCP) requirements 13 4.2 Pennant buoy system requirements 14 4.2.1 Pennant wire color codes 14 4.3 Vessel working wire/chaser requirements 15 4.4 Equipment requirements 15 4.5 Piggyback systems 15 5 Work specification requirements (scope of work) 15 5.1 Work specification checklists 16 5.1.1 Field information 16 5.1.2 Installation information 16 5.1.3 Requirements related to relevant vessels 17 5.1.4 Other information required in the work specification 17 6 Communication require