Iranian Classification Society Rules

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Rules and Guidance for the Classification of


Mobile Offshore Drilling Units


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ICS


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Rules

2015


Rules for the Classification of


Mobile Offshore Drilling Units


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Guidance

2015


Guidance Relating to the Rules for the Classification of


Mobile Offshore Drilling Units


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2015


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Rule for the Classification of


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Mobile Offshore Drilling Units


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RB-13-EOffshoreSection 1 GeneralSection 2 DefinitionsCHAPTER 2 CLASSIFICATION AND SURVEYSSection 1 GeneralSection 2 ClassificationSection 3 SurveysCHAPTER 3 CONSTRUCTION, STRENGTH AND MATERIALSSection 1 GeneralSection 2 AccessSection 3 Design LoadsSection 4 Calculation of StrengthSection 5 Surface Type UnitsSection 6 Self-elevating UnitsSection 7 Column-stabilized UnitsSection 8 Towing ArrangementsSection 9 Fatigue AnalysisSection 10 MaterialsSection 11 Anti-fouling SystemsSection 12 Protective Coatings of Dedicated Seawater Ballast TanksSection 13 Construction PortfolioSection 14 WeldingSection 15 Drainage and Sediment ControlSection 16 Ice StrengtheningSection 17 Corrosion ControlSection 18 Guardrails and BulwarksSection 19 Temporary or Emergency Mooring EquipmentCHAPTER 4 SUBDIVISION, STABILITY AND FREEBOARDSection 1 Inclining TestSection 2 Righting Moment and Heeling Moment CurvesSection 3 Intact Stability CriteriaSection 4 Subdivision and Damage StabilitySection 5 Extent of DamageSection 6 Watertight IntegritySection 7 FreeboardCHAPTER 5 MACHINERY INSTALLATIONS OF ALL TYPES OF UNITSSection 1 GeneralSection 2 Machinery InstallationsCHAPTER 6 ELECTRICAL INSTALLATIONS FOR ALL TYPES OF UNITSSection 1 GeneralSection 2 Electrical InstallationsSection 3 Alarms and Internal Communication4. At least in the following spaces general alarm is to be capable of being operated:CHAPTER 7 MACHINERY AND ELECTRICAL INSTALLATIONS IN HAZARDOUS AREASSection 1 GeneralSection 2 Extent of Hazardous AreaSection 3 VentilationSection 4 Emergency Shutdown for Electrical EquipmentSection 5 Electrical Installations in Hazardous AreasSection 6 Machinery Installations in Hazardous AreasCHAPTER 8 MACHINERY AND ELECTRICAL INSTALLATIONS FOR SELF-PROPELLED UNITSSection 1 GeneralSection 2 Means of Going AsternSection 3 Steam Boilers and Boiler Feed SystemsSection 4 Machinery ControlsSection 5 SteeringSection 6 Communication between the Navigating Bridge and the Engine RoomSection 7 Engineers’ AlarmSection 8 Main Source of Electrical PowerCHAPTER 9 PERIODICALLY UNATTENDED MACHINERY SPACES FOR ALL TYPES OF UNITSSection 1 GeneralSection 2 Fire Protection and Fire FightingSection 3 Protection against FloodingSection 4 Bridge Control of Propulsion MachinerySection 5 Communication and Alarm SystemSection 6 Special Provisions for Machinery, Boiler and Electrical InstallationsSection 7 Safety SystemsCHAPTER 10 FIRE PROTECTION, MEANS OF ESCAPE AND FIRE EXTINCTIONSection 1 General4. Fire control plans are to be submitted for review on which the following, as a minimum, should be clearly shown:Section 2 Fire Protection and Means of EscapeSection 3 Fire Extinction1. At least two water supply sources (sea chests, valves, strainers and pipes) are to be provided and so arranged that one supply source failure will not put all supply sources out of action.3. A fixed water spray system is to be provided to protect drilling area. The minimum water ap- plication rate is not less than 20.4 m -min , or3. A suitable fixed foam system is to be provided. The system is to be capable of delivering foam solution at a rate of not less than 6.5 m -min (4.1 m -min for Aqueous Film Forming Foam or Film-Forming Fluoroprotein Foam) for 15 minutes. Alternatively, a gas fixed fire ex- tinguishing system may be used for enclosed mud processing spaces.1. Spaces having a fire risk, in principle, are to be provided with an automatic fire detection and alarm system.3. The fire detection main indicator board is to be at a manned control station and is to be clearly to indicate where fire has been detected.Detection systems using only thermal detectors, in general, are not to be permitted.Sufficient manual fire alarm stations are to be installed throughout the accommodation spaces, service spaces and control stations. One manually operated call point is to be located at each exit. Manually operated call points are to be readily accessible in the corridors of each deck such that no part of the corridor is more than 20 m from a manually operated call point. Measures are to be taken to prevent inadvertent operation of the manual call alarm system.(6) Ventilation intakes of enclosed machinery spaces contiguous to hazardous areas and contain- ing internal combustion engines and boilers; and2. Low level alarm set at 10 ppm and high level alarm set not higher than 300 ppm are to be designed. The high level alarm is to activate an evacuation alarm. If the alarm at the main control point is unanswered within 2 minutes, the toxic gas (hydrogen sulphide) alarm and the helideck status light is to be automatically activated.1. A self-contained breathing apparatus (SCBA) positive-pressure/pressure-demand breathing equip- ment with full-face piece and rated for a minimum of 30 minutes is to be provided for each person in working areas where hydrogen sulphide may be encountered, and each person in other areas is to be provided with a SCBA rated for a minimum of 15 minutes, or;(2) Muster/evacuation area;(4) Mud processing areas; andSection 4 Fire Extinguishing Systems for Helicopter Facilities(5) The fire fighting equipment as given in 402. are to be provided.Section 5 Gas CylindersSection 6 Other Operational RequirementsCHAPTER 11 LIFTING DEVICES, PERSONNEL AND PILOT TRANSFERSection 1 CranesSection 2 Lifting and Hoisting EquipmentSection 3 Personnel LiftsSection 4 Personnel and Pilot TransferSection 5 Drilling DerricksCHAPTER 12 HELICOPTER FACILITIESSection 1 GeneralSection 2 DefinitionsSection 3 ConstructionSection 4 ArrangementsSection 5 Visual AidsSection 6 Motion Sensing SystemSection 7 Exemptions