Iranian Classification Society Rules

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Rules and Guidance for the Classification of

Mobile Offshore Drilling Units

ICS

Rules

2015

Rules for the Classification of

Mobile Offshore Drilling Units

Guidance

2015

Guidance Relating to the Rules for the Classification of

Mobile Offshore Drilling Units

2015

Rule for the Classification of

Mobile Offshore Drilling Units

RB-13-E Offshore Section 1 General Section 2 Definitions CHAPTER 2 CLASSIFICATION AND SURVEYS Section 1 General Section 2 Classification Section 3 Surveys CHAPTER 3 CONSTRUCTION, STRENGTH AND MATERIALS Section 1 General Section 2 Access Section 3 Design Loads Section 4 Calculation of Strength Section 5 Surface Type Units Section 6 Self-elevating Units Section 7 Column-stabilized Units Section 8 Towing Arrangements Section 9 Fatigue Analysis Section 10 Materials Section 11 Anti-fouling Systems Section 12 Protective Coatings of Dedicated Seawater Ballast Tanks Section 13 Construction Portfolio Section 14 Welding Section 15 Drainage and Sediment Control Section 16 Ice Strengthening Section 17 Corrosion Control Section 18 Guardrails and Bulwarks Section 19 Temporary or Emergency Mooring Equipment CHAPTER 4 SUBDIVISION, STABILITY AND FREEBOARD Section 1 Inclining Test Section 2 Righting Moment and Heeling Moment Curves Section 3 Intact Stability Criteria Section 4 Subdivision and Damage Stability Section 5 Extent of Damage Section 6 Watertight Integrity Section 7 Freeboard CHAPTER 5 MACHINERY INSTALLATIONS OF ALL TYPES OF UNITS Section 1 General Section 2 Machinery Installations CHAPTER 6 ELECTRICAL INSTALLATIONS FOR ALL TYPES OF UNITS Section 1 General Section 2 Electrical Installations Section 3 Alarms and Internal Communication 4. At least in the following spaces general alarm is to be capable of being operated:CHAPTER 7 MACHINERY AND ELECTRICAL INSTALLATIONS IN HAZARDOUS AREAS Section 1 General Section 2 Extent of Hazardous Area Section 3 Ventilation Section 4 Emergency Shutdown for Electrical Equipment Section 5 Electrical Installations in Hazardous Areas Section 6 Machinery Installations in Hazardous Areas CHAPTER 8 MACHINERY AND ELECTRICAL INSTALLATIONS FOR SELF-PROPELLED UNITS Section 1 General Section 2 Means of Going Astern Section 3 Steam Boilers and Boiler Feed Systems Section 4 Machinery Controls Section 5 Steering Section 6 Communication between the Navigating Bridge and the Engine Room Section 7 Engineers’ Alarm Section 8 Main Source of Electrical Power CHAPTER 9 PERIODICALLY UNATTENDED MACHINERY SPACES FOR ALL TYPES OF UNITS Section 1 General Section 2 Fire Protection and Fire Fighting Section 3 Protection against Flooding Section 4 Bridge Control of Propulsion Machinery Section 5 Communication and Alarm System Section 6 Special Provisions for Machinery, Boiler and Electrical Installations Section 7 Safety Systems CHAPTER 10 FIRE PROTECTION, MEANS OF ESCAPE AND FIRE EXTINCTION Section 1 General 4. 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 Escape Section 3 Fire Extinction 1. 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 , or 3. 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; and 2. 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; and Section 4 Fire Extinguishing Systems for Helicopter Facilities (5) The fire fighting equipment as given in 402. are to be provided.Section 5 Gas Cylinders Section 6 Other Operational Requirements CHAPTER 11 LIFTING DEVICES, PERSONNEL AND PILOT TRANSFER Section 1 Cranes Section 2 Lifting and Hoisting Equipment Section 3 Personnel Lifts Section 4 Personnel and Pilot Transfer Section 5 Drilling Derricks CHAPTER 12 HELICOPTER FACILITIES Section 1 General Section 2 Definitions Section 3 Construction Section 4 Arrangements Section 5 Visual Aids Section 6 Motion Sensing System Section 7 Exemptions

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