Presentation on theme: "Enhance the Technical Specification for New build OSVs : Owners Perspective www.ariesmar.com AJITH P J."— Presentation transcript:
Enhance the Technical Specification for New build OSVs : Owners Perspective AJITH P J
Enhance the Technical Specification for OSV’s FOCUS AREA: PARAMETERS TO BE CONSIDERED IN NEW DESIGN OF A TYPICAL OSV FOR MIDDLE EAST.
Relevance of Specification & Design Elements: Present Generation OSV’s CHANGES IN CRITERIA–RULE & REGULATIONS:CLASS + FIELD OPERATORS Operational & Technological Aspects Safety Comfort Promptness Environmental Parameters Risk Based Assessment on activities.
Worldwide OSV Utilization Rates: Younger Vs Older Designs
OSV’s-MAJOR CATEGORIES BASED ON DUTIES OFFSHORE SUPPORT DUTIES Supply Personnel, Consumables, Equipment's SUPPLY VESSELRig Placement Anchor Handling, Towing, Escort AHTSSub Sea support Construction, Maintenance, Inspections OCV/ROV/DSV Protection Fi Fi, Rescue, Survivor, Security Oil Spill Recovery SAFETY STANDBY/ OIL RECOVERY /RESCUE MULTI PURPOSE OFFSHORE SUPPORT VESSEL
OSVs- Specific Class Notations on Demand in Middle East Optional Notations : UWILD, MLC-ACCOM, HELIDK, HAB, DPS, CRC, BWT, ACC,ERRV Notations assigned to reflect specialized Offshore service capabilities SupplyPlatform Supply Supply-HNLSSupply-Hazardous and Noxious Liquid Substances AH, TOWAnchor Handling and Towing FFV 1, FFV 2, FFV 3Firefighting DSV AIR, DSV MIXED-GAS, DSV SAT, ROVDiving and ROV Support/DSV/ROV Capable OSR-S, OSR-COil Spill Response/Recovery SSRSafety Standby Rescue Pipe LayPipe Laying Heavy Lift WSWell Stimulation ESCORTEscort SPSSpecial Purpose AMS Machinery and systems.
Multipurpose Vessel Concept -Design to Extend vessel Functionality MPSVs support Offshore Construction,Supply,Deep water Testing,ROV,DSV,Safety,Storage,Security,Accommodation,Anchor Handling etc MPSVS –SWISS KNIVES OF OFFSHORE BUSINESS ESTABLISHED CONCEPT – CAREFUL APPROACH DURING DESIGN STAGE BY OWNER.
OSVs in Middle East: Primary Design Factors & Specification Elements MANDATORY DESIGN COMPLIANCE AS PER PRESENT RULE REQUIREMENTS SOLAS & MARPOL REGULATIONS CARGO SECURING MANUAL SPS COMPLIANCE OSV CODE COMPLIANCE STABILITY/DAMAGE STABILITY COMPLIANCE OF OSVS CLASS-STRENGTH CALCULATIONS FOR BENDING MOMENT & SHEAR FORCE LOCAL STRENGTHENING UNDER DECK FOR EQUIPMENTS,FOUNDATIONS AND SYSTEMS
New Build OSV Vessel-Proposed Design & Building Process Flow for Owner STEP 1:PREPARE TECHNICAL SPECIFICATION,HULL FORM DESIGN & PRELIMINARY GA - COMPLYING ALL MPSV REQUIREMENT STEP 2:SPLIT UP BUDGET FOR ESSENTIAL & FUTURE FITMENT OF EQUIPMENTS STEP 3:PLAN APPROVAL BASED ON ALL MPSV FUNCTIONAL EQUIPMENT STEP 4:HULL CONSTRUCTION,FOUNDATIONS,PROVISION FOR PIPINGS,ELECTRICAL LOADS & COATING STANDARDS AS PER PLAN APPROVAL-CLASS REQUIREMENTS STEP 5: ENSURE “PLUG & PLAY”PROVISION FOR FUTURE FITMENTS & MACHINERY STEP 6:ADD ON CLASS NOTATIONS AS AND WHEN REQUIRED BY FITMENT OF MACHINERY& EQUIPMENTS IN DUE COURSE OF VESSEL OPERATIONS
RULES & REGULATIONS:COMPARISON Basic Supply vs New MPSV Design Parameters BasicNew SizeL-48-62mL BHP , DPNoneDP-2 Rule<90 m ruleOSV Rule Bottom ScantlingIncrease in Longitudinal. Frame sizes Side ShellIncrease in thickness for impact loading BulkheadsSame Deck Scantling Actually –Decrease in Thickness Practical-Increase based on more Deck strength rqmts S.Structure Scantling Side shell thickness-Reduced F’cle Deck thickness-Increase Accomodation1.8 m clear height2.03 m clear height-MLC
PARAMETERS:COMPARISON Old Specification Supply Vessel -Non Compliance Elements & Root Cause Parameters Root Cause on possible mode for Failure Intact Stability -Hull form slender as it was meant for shallow draft -VCG not satisfactory during Crane and high equipment Loading since cranes used currently are of high lifting capacity and outreach. (A knuckle boom crane with a capacity of minimum 20 ton at 12m and certified for man riding required for offshore) Damage Stability -Deterministic approach with side damage anywhere within transverse bulkheads. -Theoretically 2 compartment damage standard is applied which old designs may not satisfy,
PARAMETERS:COMPARISON Old Specification Supply Vessel -Non Compliance Elements & Root Cause SPS Code-LSA/FFA Compliance difficulty -Bilge/Ballast/Fire piping(B/5) from side shell routing -Deterministic damage and D.B Damages.(if more passengers-Probabilistic approach) -Fuel Tank protection from side shell -Tie 2 compliance for engines Structural Modifications-No sufficient room for additional stiffening for pedestal and foundations -Existing scantling of the hull not satisfactory to take loads. Major rework -Extension of Hull to meet cargo tank capacities -Means for cargo securing limited Compartment & Accom.Spaces-Offshore accommodation crew space requirements -MLC 2006 regulations. Mainly Clear deck height and comfort -Berth Size : 198 cm x 80 cm(minimum) Paramaters Root Cause on possible mode for Failure
PARAMETERS:COMPARISON Old Specification Supply Vessel -Non Compliance Elements & Root Cause Paramaters Root Cause on possible mode for Failure Anchor Handling -Implemented after disaster with the AHTS vessel “Bourbon Dolphin” capsize -Fail to meet Minimum residual stability during anchor handling operations as well as other operations where vessels are subject to similar large external forces. -Power availability issue due to limited capacity of engines for load sharing with DP. Towing -Fail to meet Minimum residual stability during anchor handling operations as well as other operations where vessels are subject to similar large external forces.
PARAMETERS:COMPARISON Old Specification Supply Vessel -Non Compliance Elements & Root Cause Paramaters Root Cause on possible mode for Failure Fi -Difficulty in fixing Independent pumping and piping systems (supply of water and foam monitors, water-spraying system and portable fire-fighting equipment); Water fire-fighting systems (number of pumps, monitors and characteristics as function of fifi class) &Fixed-foam fire-fighting systems; Oil Recovery -No Segregation of spaces intended for retention of oil (cofferdams, tanks); settling & accumulation tanks. -Critical Definition of dangerous spaces (accumulation tanks, surrounding spaces, pump rooms, spaces with piping, deck areas, etc.) not possible
Rules & Regulation –Addl to be applied in Specification Special Category to Add Value & quality for ship Item Certification/ Documentation Reason for Reference Guidelines for Failure Modes & Effects Analyses (FMEAs), IMCA M 166-April2002 FMEA report by approved third party. For DPS 2 notations Class will take care of the FMEA. But IMCA guide lines are also provided in the technical specification as a basic guide line for FMEA to control the outcome of FMEA report. Guide for Coating Performance standards Notation: CPS Generally Painting warranty by the Maker will suffice for this. But there is trend of providing CPS notation for vessels.This will help in class involvement providing the protective coating for Sea water Ballast tanks & cargo holds. Or A specific requirement of Complying with PSPC can be incorporated in the Technical specification - this will suffice for the requirement. Notation (Automatic Centralized Control Unmanned) Notation: ACCU/ + ACCU (for system Built under survey) Unmanned machinery space requirements. Can reduce the manning and efficiency of the vessel. General trend is for Going for ACCU notation. Guide For Crew Habitability on Ships Notation: HAB/ HAB+/ HAB ++ Additional requirement (Over & above MLC). Based on Market requirement. Noise & Vibration. IMO Publication 978 Performance Standard of Navigation Equipment NA Control the performance of navigation equipment's - General guidelines. Rely on reputed makers equipment's with class certificates which essentially deals with IMO publication. Or can be elaborated in the technical specification. IMO Resolution A686 (17) Code on Alarms and Indicators, amended by Res. MSC. 39 (63) NA Control the performance of Alarm & monitoring system - give a general guidelines on the system.
Rules & Regulation section in Specification Special Category Guidelines to Add Value & quality for ship Item Certific ation/ Docume ntation Reason for Reference ISO 8861 Shipbuilding - Engine room ventilation in Diesel Engine ships NA Provided to ensure the quality of the system specifying minimum air change per hour. Generally provide over and above ISO specified values. ISO Ships and Marine Technology- Air- conditioning and ventilation of accommodation spaces NA Generally provided for ensuring the performance of the A/c system inside the accommodation space especially when dealing with new shipyards/ makers.. ISO 8864, Air conditioning and Ventilation of Wheelhouse onboard Ships NA This is provided for ensuring quality of performance of the A/c system for wheelhouse. Normally, elaborated in the specification. And wheelhouse always to be provided with stand by arrangements in the technical specifications.. ISO 9943, Ventilation and air treatment of galleys and pantries with cooking appliances NA For ensuring the performance of ventilation system in galleys. Also, can be elaborated in the technical specification as a more specific requirement. International Life Saving Appliances Code (LSA Code) NAFull compliance require based on the Number of persons on Board International Code for Fire Safety Systems (FSS Code) NAFull compliance require based on the Number of persons on Board
FIELD OPERATORS PARAMETERS-To be incorporated ADMA-OPCO,ARAMCO.Q.P REGULATIONS PARAMETERSDESCRIPTION TemperatureCommonly used assumption for middle east: Consider the sea water temp. Max 36 0 C & min 10 0 C Ambient air temp. Max 50 0 C & min 5 0 C Transverse Thruster PerformanceThe vessel to be capable of side-stepping, at the operational even-keel draft in STILL WATER, of 2.75 knots average sideways movements with A maximum of ± 3º heading variation Approved Maker ListOwner to specific critical equipment to be used onboard with maker details than shipyard to propose. OCIMF’s OVID-VIQCompliance to be ensured as all oil majors seeking & referring to the same to offshore vessels inspection database before chartering. “Crash Stop” CapabilityThe vessel shall be capable of going from full ahead at 100% MCR to being stopped “dead in the water” within 40 seconds from time of the order Maintain Station CriteriaThe vessel must be capable of maintaining station within five (5) horizontal meters of a discrete position in an environment with concurrent winds, seas and currents as follows: Wind: beaufort force 7, (up to 33kts – 17.1 m/s). Sea condition: sea state 4, “rough sea” (up to 8ft – 2.44 meters). Current: 2kts.
FIELD OPERATORS PARAMTERS ADMA-OPCO,ARAMCO.Q.P REGULATIONS PARAMETERS DESCRIPTION Air ConditioningTHE VESSEL SHALL BE CAPABLE OF MAINTAINING ALL OF ITS ACCOMMODATION, MESSING, BERTHING, RECREATIONAL AND INTERNAL NAVIGATING SPACES AT AN AIR TEMPERATURE OF 22 DEGREES CELSIUS AND 50% RELATIVE HUMIDITY IN AN OPERATING ENVIRONMENT OF 45 DEGREES CELSIUS, 90% RELATIVE HUMIDITY AT A SURFACE SEA TEMPERATURE OF 34 DEGREES CELSIUS. THE AIR-CONDITION UNIT(S) SHALL BE CAPABLE OF RE-CIRCULATION MODE WHILE MAINTAINING INTERIOR OVER-PRESSURE, I.E. IN CONNECTION WITH A H2S SITUATION, SANDSTORM, ETC. THE HVAC SHALL BE CONNECTED TO THE H2S/GAS DETECTION SYSTEM AND ENABLE AUTOMATICALLY START OF THE RECYCLING OF AIR Deck AreaVESSEL TO HAVE FREE AVAILABLE DECK SPACE SHALL BE MINIMUM 350 SQUARE METERS, WITH MINIMUM DECK LENGTH OF 30M AND WITH A MINIMUM DECK LOADING OF 5 TON PER SQUARE METER. Loading SoftwareVESSEL SHALL BE EQUIPPED WITH A LOAD MASTER COMPUTER, TANK DATA MONITORING SYSTEM OR AN EQUIVALENT PC BASED SYSTEM FOR DECK / UNDER DECK CARGO PLANNING AND STABILITY CALCULATIONS. Personal TransferMINIMUM FREEBOARD, ELSE WILL HAVE ISSUE WITH REACH TOWARDS BOAT LANDING PLATFORMS
Specific functions and Key technologies to be implemented: Maneuvering Tunnel Thrusters Azimuth Thrusters Retractable Thrusters CPP Propellers DP Monitoring Bridge watch Launching systems Safety Alarms Security Communication-all consoles Deck Houses Accom –Hab,MLC ERRV Galley Aft View Helideck Fi Machinery & Equipment's Diving FRC Lifeboats Service Tanks ROV
CONCLUSION REMARKS FUNCTIONAL ELEMENTS MUST BE ADDED TO A BASIC SUPPLY VESSEL COMPLYING CLASSIFICATION NOTATIONS & OPERATOR REQUIREMENT HULL FORM PARAMETERS SHALL BE THE BASIC CRITERIA(STABILITY & STRENGTH) TO BE CHECKED IN ORDER TO ENSURE WORKS CAN BE EXECUTED ON A NEW BUILD VESSEL OPERATIONAL ASPECTS TO BE WELL DEFINED PRIOR TO COMMENCEMENT OF A NEW BUILD