phase 4 report - DNV

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RN04: ESCAPE, EVACUATION AND RESCUE OF PEOPLE // APPENDIX Aabsorbing system and placed inside single or multiple protected and interconnected embarkation areas thatcan be linked directly to the temporary refuge (TR). The craft are therefore winterized in combined walkwayand embarkation enclosures to maximise craft availability and reduce personnel risks after leaving the TR.The enclosures are heated and have slight positive pressure to prevent ingress of hazardous gases, cold ambienttemperatures, green water, spray ice and snow.Figure A8 - The TEMPASC and an example of a multiple craft enclosure(source: Oceanwide Safety at Sea)Ice Strengthened Lifeboat (ISL)The Ice Strengthened Lifeboat is a practical design of an ice capable TEMPSC that has been developed in a JointIndustry Project and has reached the prototype design stage. The ISL is designed to mitigate the risk of damage orloss due to crushing by ice, during evacuation from offshore installations or vessels in ice covered waters.The ISL design combines an ice-strengthened composite shell that resists the ice loads with novel hull shapefeatures that help escape from converging, high freeboard ice floes, by enabling the craft to “pop up (or backand forth)” when pinched between two ice features (i.e., the “Fram” principle). The ISL’s shape was designedaccording to the following features:––an appreciable side slope;––small waterline angles;––no parallel middle body; and––high side slope freeboard.The ISL prototype design can accommodate 67 people. It has a 10 m long hull, made of fibreglass compositematerials, and can withstand ice crushing and lifting loads up to 100 tonnes. The concept incorporates manyoutfitting components not found on typical TEMPSCs to enhance the comfort and safety of evacuees under coldweather conditions. The ISL design concept also addresses the potential of the vessel being stranded on an ice floe.Between 2002 and 2008 a performance based design was developed for an ice capable Totally Enclosed MotorPropelled Survival Craft (TEMPSC) for use as an evacuation craft in Arctic areas. Several international operatorsprovided key criteria that were incorporated into a design philosophy and translated into a design specificationand design drawings by Robert Allan Ltd et al. The design evolved on the requirements of operators withdiffering ice environments. With this work concluded, the project has now reached the stage where constructionof a prototype ISL is ready to commence. The design combines novel hull shape features that helps escape fromconverging, high freeboard ice floes with an ice-strengthened composite shell that resists the ice loads and manyother performance-based requirements.170RUSSIAN–NORWEGIAN COOPERATION PROJECT
RN04: ESCAPE, EVACUATION AND RESCUE OF PEOPLE // APPENDIX A Barents 2020Figure A9 - The unique hull shape of the ISL(source: Robert Allan Ltd)Polar Haven LifeboatMad Rock Marine Solutions’ Polar Haven Lifeboat is a lifeboat specifically designed to operate in harshenvironments and ice-covered waters. It is claimed to have good maneuvering capabilities and a forward-placedcoxswain cabin, providing a 360° view so obstacles such as ice and debris can be seen and avoided.Features include roll reduction, ice protection for the propeller and a forward placed “ice knife” to prevent thehull from grounding on top of the ice while transiting ice floes. It has been model scale tested and is awaiting fullscale build and testing.Figure A10 - Concept drawing of the Polar Haven Lifeboat(source: Mad Rock Solutions Inc.)Report no 2012-0690 171
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Barents 2020Report no 2012-0690 1
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Barents 2020Barents 2020Assessment
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Barents 20206. Contents of Risk Man
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Barents 20203. Hazard Identificatio
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Barents 2020CONCLUSIVE SUMMARYThe B
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2. Cooperation PartnersThe last Ste
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RN02: DESIGN OF FLOATING STRUCTURES
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RN03: RISK MANAGEMENT OF MAJOR HAZA
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RN07 // BibliographyBarents 20207.
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RN07 // APPENDIXBarents 2020Table A
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RN07 // APPENDIXBarents 2020Table A
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RN07 // APPENDIXBarents 2020Appendi
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RN07 // APPENDIXBarents 2020Report
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RN01: CO-ORDINATION OF DELIVERABLES
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