AT SUBSEA VESSEL OPERATIONS CONFERENCE, OSLO (YEAR 2013)

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AT SUBSEA VESSEL OPERATIONS CONFERENCE, OSLO (YEAR 2013)

  1. 1. DESIGN OF ULTRA DEEP WATER RIGID & FLEXIBLE PIPELAY/ HEAVY LIFT/ DP3 CONSTRUCTION VESSEL BY DEBABRATA BANERJEE & ANIRUDDHA SEN NAVNAUTIK PTE LTD, SINGAPORE SUBSEA VESSEL OPERATIONS CONFERENCE, OSLO 17 & 18 APRIL 2013 1
  2. 2. PRINCIPAL PARTICULARS Length Overall........................178.0 m Breadth Moulded...................46.0 m Depth Moulded.......................15.6 m Draft (Max)..............................10.5 m Deadweight.........................11,000 T GRT.......................................48,500 T NRT............................................TBA Target Speed…………………………12 knots CLASSIFICATION NOTATION DNV 1A1 Ship Shaped Pipelaying Vessel, Dynapos Autro, ICE-1A, Clean DESIGN, Held-SH, Crane, EC0, BIS, COMF (V3, C3), NAUT-OSV (A) Flag...................................Panama 2
  3. 3. 3 3000T CRANE MLS TOWER CAROUSEL COMPT A&R COMPT ADJUSTER ARMS CARGO DECK Deck Area..4,200 m2 (without reels) Deck Strength...10.0 T/m2 ACCOMMODATION Single berth cabin for all 239 complements. AMENITIES General Workshop – 1 ROV Workshop – 1 Conference Room – 3 Office – 12 Site Office – 3 Officer Recreation Room – 1 Crew Recreation Room – 1 Officer Mess-1 Crew Mess – 1 Gymnasium – 1 Prayer Room – 1 Hospital – 1 Treatment room – 1 SAFETY EQUIPMENT Life Boat...2 x 120 persons Life Raft..... 6 x 20 persons Rescue Boat……2 nos (6 person capacity each) Davits………….4 nos. HELIDECK Dimensions-27.5m x27.5m (Sikorsky S-92/S-61N) MLS PIPE LAYING & 3000T CRANE PACKAGE PROVIDED BY HUISMAN EQUIPMENT B.V. 1200T REEL ROV COMPT 4 GENSET ROOMS 2 BT COMPTS SWBD ROOMS AUX M/C ROOM VESSEL OVERVIEW
  4. 4. 4 ISOMETRIC VIEWS OF THE VESSEL
  5. 5. (A) DESIGN PHILOSOPHY BEHIND BASIC DIMENSIONS OF THE VESSEL Recommended Dimensions: L=215m X B=50m X D=18m CONSTRAINT FACED DURING DESIGN Length restriction to suit owner’s requirement. Hence Final Dimensions: L=178m X B=46m X D=15.6m 5 PHOTO COURTESY: EMAS-AMC & SOFEL
  6. 6. HULL FORM • Hull form was adopted from Navnautik’s earlier proposal (Model & ICE tested in MARIN & HSVA) of an 180m submersible heavy lift vessel. • With some modification the parameters matched the basic requirement 6 PHOTO COURTESY: MARIN
  7. 7. MODEL TESTING 7  Resistance & propulsion tests were conducted in VTT Technical Research Centre – Helsinki (FINLAND)  ICE Testing was conducted in Aalto University ICE Technology Laboratory Helsinki (FINLAND)  Minimum propulsion power during ice navigation has been approved by DNV. PHOTO COURTESY: VTT & AALTO
  8. 8. STRUCTURAL DESIGN - GLOBAL  Ship’s dimensional ratios are outside classification rule recommendation.  DNV Pt3.Ch.1Sec.5 states that: “special considerations will be given to vessels with the following proportions:  L/B < 5 (178/46 = 3.9)  B/D > 2.5 (46/15.6 = 2.9) As a result the vessel structure had to be analyzed to comply to both: 1. Rule based design requirement. 2. Fundamental Global structural Finite Element Analysis based on global motion analysis on the basis of worldwide wave spectrum Longitudinal strength has been determined by both methods as stated above & superimposed on a single plan & an envelope curve has been presented for Master’s reference. 8
  9. 9. (B) STABILITY ISSUES AND THEIR COUNTERMEASURES INTACT STABILITY • Comply IMO Res. 267 (85)-IS Code 2008 • Able to carry any combination of: 4 nos. loaded reels (22m dia) 2200mt each on deck 2 nos. loaded carrousels 1250mt each inside the hull and full consumables • Tank Capacity - Fuel Oil 2000m3 and FW 1600m3 • Ice condition as per DNV Ice Class 1A • Crane operation Comply to DNV Pt.5 Ch.7 Sec.7 D-200 criteria (Accidental hook load drop) DAMAGE STABILITY Sailing & Pipelaying Operation • Comply IMO Res. MSC 266(84) SPS Vessel-239 passengers (Probabilistic) • Comply to DNV Pt.5 Ch.7 Sec.7 D-400 criteria (Crane damage stability) ROLL PERIOD & HEEL CONTROL ISSUES • Require very large metacentric height (GM) in 3000t crane operation. • Hence in other operating conditions (pipe laying & sailing) rolling period can be short & uncomfortable. • 3000t crane operation requires maintaining heel angle within 2.0 deg. 9
  10. 10. COUNTERMEASURES  Five (5) “U” shaped (pneumatically controlled active) and one passive flume tank have been incorporated to control the rolling period.  Objective is to achieve a Roll Period of more than 11 seconds for all sailing and pipelaying condition 10 FLUME TANK
  11. 11. 11 COUNTERMEASURES contd..... 11 CROSS PIPE FOR ANTI-HEELING TANK U-SHAPED ANTI- ROLLING TANK AIR PIPES MAIN DECK AIR PIPES COMBINED ANTI-HEELING & ANTI-ROLLING TANK CONFIGURATION Heel control tanks have also been provided as:- • 3000t crane operation requires maintaining heel angle within 2.0 deg. • In order to achieve this five (5) pneumatically controlled active Heel Control tanks have been provided.
  12. 12. 12 Global motion analysis was carried out for crane, pipelaying and sailing/transit conditions both in shallow and deep waters. The objectives of the global motion analysis are: - RAOs of vessel motions (6DOF) at CG. - Computation of Maximum Operating Sea States to keep all the motions and accelerations within the prescribed limits of equipment manufacturers - Design response (short-term & long-term) of vessel motions and accelerations (longitudinal, transverse and vertical) at c.o.g of heavy equipments and other positions for local FEA Hydrodynamic Meshed Model (C) METHODOLOGY OF GLOBAL MOTION ANALYSIS & FEA APPLIED IN THIS PROJECT
  13. 13. 13 Typical Heave RAO at CGThe limiting sea states for survival & operating conditions for both crane and pipelaying were arrived at, based on the operational limits (maximum motion amplitudes & accelerations). The Global Analyses were carried out at these limiting sea states to ensure that the global stresses due to combined (still water + wave) hull girder loads are less than the permissible limits.
  14. 14. 14 The hull girder loads are applied beside the local loads as recommended by equipment manufacturers. Local Finite Element Analysis To assess strength and buckling against DNV rules, the following structural components are analyzed by fine mesh using Finite Element Analysis: • 3000 T Aft Crane Foundation • Pipelaying Tower Foundation • Deck Reels Foundation • Carousels & Various Sheaves Foundation • 80T Crane Foundation • Accommodation supporting Helideck structure • Aft Hinged Platform Hull Model for FEA Typical FEA model for MLS moonpool Typical FEA model for Crane pedestal
  15. 15. DP3 CONCEPT & DESIGN BY OWNER • The vessel has four (4) segregations instead of rule requirement of two (2) segregations. • Four (4) Generator Rooms • All six Azimuth thrusters & three Bow Thrusters are in separate compartments. • As a result the DNV ERN Number achieved is 99,99,97 after single failure. 15 FOUR GENSET ROOMS Main Generator 2 x MAK 12M32C @ 5760 kW Auxiliary Generator 6 x MAK 6M32C @ 2880 kW 4 x HYUNDAI 9H25/33 @2580 kW Emergency Generator CAT- MODEL C32……..874 kW Total power installed ~ 40 MW POWERING & DYNAMIC POSITIONING (D) SALIENT FEATURES & OPERATIONAL FUNCTIONALITIES 5760 kW 2580 kW 2580 kW 2880 kW 2880 kW
  16. 16. 16 6 MW 6 MW 2 MW 2 MW 3 MW 3 MW 3 MW 2.7 MW 2.7 MW 1.42 MW PROPULSION, MANEUVERING AND POSITIONING Stern Azimuth Thruster Fwd........ 2 x Rolls Royce Aquamaster, 6,000kW each Stern Azimuth Thruster Aft.......... 2 x Rolls Royce Aquamaster, 2,000 kW each Retractable Thruster Fwd............ 2 x Rolls Royce Aquamaster, 3,000 kW each Bow Thrusters Tunnel Fwd......2 x Rolls Royce, 2,700 kW each Bow Thruster Tunnel Fwd.......1 x Rolls Royce, 1,420 kW DYNAMIC POSITIONING DP 3 System............................................KONGSBERG
  17. 17. RIGID-LAY SYSTEM (1200T REEL x 4) 17 EQPT INFO COURTESY: HUISMAN & EMAS-AMC Combined pipelay tower for reel lay and flex lay over a moon pool Pipe Outer Diameter......... Reel lay 4”-16” Tensioners............................. 2 x 400mt Hang-off Clamp...........................900mt Pipe Storage....................4 x 1,200mt reels for rigid pipe (removable) Transverse axis ………reel skid cart + reel drive unit Longitudinal axis…….reel skid cart REELING CAPACITY FOR 4 REELS • 8” pipe ~ 64km • 10” pipe ~ 48km • 12” pipe ~ 36km • 14” pipe ~ 24km • 16” pipe ~ 16km
  18. 18. SIZE DOES MATTER!! CREW EQPT INFO COURTESY: HUISMAN MLS TOWER-MOONPOOL CONFIGURATION TOP MODULE (ALIGNER WHEEL) STRAIGHTENER (2800 kNm) 2x400t TENSIONERS HANG OFF MODULE (900 T) MOONPOOL WITH BOTTOM DOORS ADJUSTER SYSTEM 20T CRANE 18
  19. 19. 19 MOONPOOL EQUIPMENT FOR RIGID-LAY OPERATIONS 100T INITIATION WINCH MOONPOOL CRANE 60T PLET WORKSTATION MOONPOOL HATCH 19 1200T REEL 2x20T TUGGER WINCH MOONPOOL CRANE MLS TOWER 60T PLET BIRD’S EYE VIEW FROM 3000T CRANE TOP (ONLY RIGID-LAY ITEMS SHOWN) MOONPOOL HATCH FWD
  20. 20. FLEX-LAY SYSTEM (1250T CAROUSEL x 2) 20 EQPT INFO COURTESY: HUISMAN Combined pipelay tower for reel lay and flex lay over a moon pool Flex lay pipe ……………..4”–24” Tensioners........... 2 x 260mt Hang-off Clamp......... (flexible) 900mt Pipe Storage..........2 x 1,250mt under-deck carousels for flexible pipe Carousel Spooler…….2 nos Deck Flex Chute ……… 2 nos Mushroom ……. 1 no. 10 T Tugger winch …….. 2 nos. Knuckle boom crane …………. 2 nos. (inside carousel compt)
  21. 21. FLEX-PIPE LAYING ROUTE FROM CAROUSEL COMPT 21 Deck Flex ChuteMushroom Carousel Carousel Spooler Crane 10T tugger winch Carousel Carousel Spooler Top Chute Bottom Chute
  22. 22. ABANDON & RECOVERY (A&R) SYSTEM 22 EQPT INFO COURTESY: HUISMAN Below main deck:- •A & R System... 2 x 600mt traction winches • 2 x 20 T storage winch •Steel Wire Rope Capacity… 3,800 m x 125 mm (Ø) each winch •Equaliser sheaves – 1 set •Low Tension sheave – 2 nos •High Tension sheave – 2 nos. On Main deck:- •Fairlead sheave – 2 sets •High Tension sheave – 2 nos. •125t Secondary A&R winch •Steel Wire Rope Capacity… 2,700 m x 64 mm (Ø)
  23. 23. CLOSEUP VIEW FOR A&R COMPT (BELOW MAIN DECK) 23 MAIN DECK 125T A&R WINCH FAIRLEAD SHEAVE (PIVOTING-TYPE) HIGH TENSION SHEAVE 600T TRACTION WINCH 20T STORAGE WINCH EQUALISER SHEAVES HIGH TENSION SHEAVE CLOSEUP VIEW FOR MAIN DECK ITEMS LOW TENSION SHEAVE
  24. 24. 3000T CRANE, 80T SERVICE CRANE, 22T DECK CRANES (2 NOS) & 30T MOONPOOL CRANE ON MAIN DECK 24 EQPT INFO COURTESY: HUISMAN 3000 T CRANE 80 T CRANE 80 T CRANE 22 T CRANE 22 T CRANE 30T CRANE 3000 T CRANE 1. Huisman Offshore Mast Crane Main hoist.....3,000mt at 25m radius, 80m hook travel Aux. hoist....1,200mt at 30m radius, 330m hook travel Whip hoist...1-fall 80mt, 2,000m hook travel 2-fall 160mt, 1,000m hook travel 2. 80T Service Crane.. (static - 80T @15‘ , 25T @115‘) / (dynamic – 19T @ 115’, 46T @ 70’) 3. Moonpool Crane – 30T 4. Deck Cranes (2 nos) – 22 T
  25. 25. AFT HINGED PLATFORM FOR STOWAGE OF EMPTY REEL 25 EQPT INFO COURTESY: HUISMAN FRAMEWISE CAPTURE OF AFT PLATFORM STOWAGE AFT PLATFORM’S REQUIREMENT Due to lack of space on working deck during reel-skidding operations, aft hinged platform is provided to park an empty reel. In order to reduce interference during 3000T crane operations, the platform has been designed as a hinged platform which can be stowed on the deck as shown below.
  26. 26.  ROV COMPARTMENT’S SECTION VIEWS 26 INFORMATION COURTESY: RAPP HYDEMA
  27. 27. 27 INFORMATION COURTESY: RAPP HYDEMA
  28. 28. 28 ‘COMF (V3, C3)’ NOTATION COMPLIANCE Noise levels Passenger top grade cabins – 50 dB Passenger cabins, standard – 55 dB Public spaces – 62 dB Open deck recreation – 70 dB Vibration levels (in mm/s peak for single frequency components between 5 and 100 Hz) Passenger top grade cabins – 2.5 Passenger cabins, standard – 4.0 Public spaces – 4.0 Open deck recreation – 5.0 The environmental standards are divided in two groups: — V Noise and vibration (Analysis carried out by DNV Oslo) — C Indoor climate.
  29. 29. 29 Climate Type A - Cabins Type B - Hospital and Ward rooms Type C - Wheel house, Control rooms, Office areas and public spaces intended for low physical activity such as Conference rooms, Libraries, Card rooms, Seating areas, etc. Type D - Public spaces intended for high physical activity such as Dining areas, Atriums, Gymnasiums, etc. Space type Min temp (oC) Max Temp (oC) Max air velocity (m/s) Min fresh air supply qty per person (m3/hr) Vertical air temp difference (oC) Relative humidity (%) A 21-24 25-28 0.40 28.8 3.0 <65 B 21-24 25-28 0.35 28.8 3.0 <65 C 22-24 25-28 0.35 28.8 3.5 <65 D 22-24 25-28 0.40 28.8 3.5 <65
  30. 30. 30 The class notation NAUT- OSV(A) covers the following main areas: — mandatory and additional workstations — field of vision from workstations — location of instruments and equipment — ergonomics and human machine interface — range of instrumentation — alarm management, including watch monitoring and alarm transfer system. — instrument and system tests. Navigation / Navigation support consoles Aft Support / Ship Handling consoles 225o FIELD OF VISION Lower level open- office type layout to ensure clear view from fwd to aft work stations. 180o FIELD OF VISION ‘NAUT-OSV(A) ’ NOTATION COMPLIANCE
  31. 31. PICTURES OF SHIP MODEL 31 PHOTO COURTESY: EZRA HOLDINGS
  32. 32. LAUNCHING PHOTOGRAPHS (LAUNCHED ON 16 NOV 2012) 32
  33. 33. REACH US AT: navnautik@singnet.com.sg ntskolkata@navnautik.org +65-98390308 +91-9831045428 www.navnautik.com THANK YOU VERY MUCH FOR YOUR TIME! 33 INFORMATION COURTESY: •EMAS-AMC •EZRA HOLDINGS •SOFEL TRIYARDS •DNV •HUISMAN EQUIPMENT B.V. •RAPP HYDEMA •HOPPE Bordmesstechnik GmbH •CYBERMARINE Disclaimer: This presentation contains information which are subject to data obtained from various vendors and hence may be updated in due course of time. Navnautik does not assure the credibility of vendor’s data. No part of this presentation can be reproduced without prior consent of Navnautik.

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