1 MARAN GAS MARITIME INC. GASTECH 2017 ~ JAPAN 5 April 2017
2 MARAN GAS MARITIME INC. Table of Contents 1. Introduction 2. Technology Overview 3. Reliability and Redundancy 4. Maintenance Philosophies 5. Reasons for Allowing Maintenance Alongside 6. Examples of Typical Maintenance Tasks 7. Process for Requesting and Approving Maintenance Works 8. Experience from One LNG Terminal / Port 9. Un-Scheduled Repairs 10.Summary and Conclusions
3 MARAN GAS MARITIME INC. Introduction 1. Safety and Reliability have been the guiding principles of the LNG Industry 2. Efficiency has become a strong element as the LNG Industry has matured 3. Technology making the transition from steam to diesel power 4. Redundancy new designs have higher levels of redundancy 5. Maintenance more work
4 MARAN GAS MARITIME INC. Global LNG Fleet as of 2020 (above 65,000 m 3 ) TFDE / DFDE 169 32% 2 - Stroke Diesel 108 20% Steam 257 48% Propulsion Types In Service Under Construction Totals Steam 250 7 257 TFDE / DFDE 133 36 169 2 - Stroke Diesel 54 54 108 437 97 534
5 MARAN GAS MARITIME INC. Technology Overview - Steam LNG Vessels - Typical Steam Plant
Technology Overview - 160K TFDE LNG Vessels - Typical Tri-Fuel Diesel Electric Power Plant Single Screw
7 MARAN GAS MARITIME INC. Technology Overview - 174K TFDE LNG Vessels - Typical Tri-Fuel Diesel Electric Power Plant Twin Screw
8 MARAN GAS MARITIME INC. 2-Storke Main Engine (ME-C Type) Engine Room Technology Overview - SSD RL LNG Vessels - 4-Stroke Diesel Generator Engine Cargo Area RELIQUEFACTION PLANT FUEL OIL SYSTEM (MDO/MGO/HFO)
Technology Overview - MEGI LNG Vessels -
10 MARAN GAS MARITIME INC. Technology Overview - 174K XD-F LNG Vessels -
11 MARAN GAS MARITIME INC. Reliability and Redundancy - Propulsion - Power Plant Prime Mover Power To Red Gear / Shaft Steam 1 Steam Turbine 160K TFDE 4 Diesel Gens 2 Propulsion Motors 174K TFDE 4 Diesel Gens 2 Propulsion Motors SSD - RL MEGI X-DF 2 Slow Speed Diesels 2 Slow Speed Diesels 2 Slow Speed Diesels Reduction Gear Propeller(s) and Shaft(s) 1 1 1 1 2 2 Direct Drive 2 Direct Drive 2 Direct Drive 2
Reliability and Redundancy - Electrical Power Generation - 2-Stroke Slow Speed Diesels Power Plant Steam 160K TFDE 174K TFDE SSD - RL MEGI X-DF Electric Power Generators 2 x SSTG plus 1 x Diesel Generator 4 x Very Large Diesel Generators 4 x Very Large Diesel Generators 4 x Large Diesel Generators 4 x Large Diesel Generators 4 x Large Diesel Generators
Reliability and Redundancy - Display of Vessel Types Operating at Sea Service Speed - Power Plant Propulsion Electric Power Steam main steam turbine and 2 steam turbo-generators operating 160K TFDE 3 our of 4 main generator engines and both electric motors operating 174K TFDE 3 our of 4 main generator engines and both electric motors operating 2-Stroke Slow Speed Diesel 2 main engines and 2 our of 4 auxiliary diesel generators operating 13
Power Plant Propulsion Electric Power Steam main steam turbine and 2 steam turbo-generators operating 160K TFDE 2 our of 4 main generator engines and both electric motors operating 174K TFDE 2 our of 4 main generator engines and both electric motors operating Reliability and Redundancy - Display of Vessel Types Maneuvering in Port- 2-Stroke Slow Speed Diesel 2 main engines and 2 our of 4 auxiliary diesel generators operating 14
Power Plant Propulsion Electric Power Steam steam turbine on turning gear and 2 steam turbogenerators operating 160K TFDE 1 our of 4 main generator engines and both electric motors operating 174K TFDE 1 our of 4 main generator engines and both electric motors operating Reliability and Redundancy - Display of Vessel Types Loading- 2-Stroke Slow Speed Diesel main engines idle and 2 our of 4 auxiliary diesel generators operating 15
Power Plant Propulsion Electric Power Steam steam turbine on turning gear and 2 steam turbogenerators operating 160K TFDE 2 our of 4 main generator engines and both electric motors operating 174K TFDE 2 our of 4 main generator engines and both electric motors operating Reliability and Redundancy - Display of Vessel Types Discharging- 2-Stroke Slow Speed Diesel 2 main engines idle and 3 our of 4 auxiliary diesel generators operating 16
Reliability and Redundancy - Readiness for Departure - Steam Turbine TFDE 2-Stroke Slow Speed Diesel 1 ~ 2 Hours 15 minutes 30 minutes Warming of main steam turbine Main Engines already running, only need to line -up electric propulsion system Preparation and start of main engines 17
Maintenance Philosophies Equipment Steam TFDE 2-Stroke SSD Main Engines Main Turbine inspection and overhaul at Drydock 4 Main Engines maintenance program based on running hours can not align with drydock 2 Main Engines major work done in drydock Inspections and minor work during trading Auxiliary Electric Generators Steam Turbogenerators inspection and overhaul at Drydock Covered above. Auxiliary diesel generators maintained during trading Other engine room auxiliary machinery Maintained during trading Maintained during trading Maintained during trading 18
Reasons for Allowing Maintenance Alongside 1. Enhanced Vessel Reliability and Efficiency a) Access of technicians and spares b) Reduce Load on service companies c) Timely maintenance increases vessel reliability 2. Enhanced Safety of the Crew and Vessel a) Vessel is stationary in port b) Weather at sea unpredictable c) Anchoring good but not always possible 3. Safety of the Vessel in Port Not Compromised a) High levels of redundancy b) No conflict with cargo operations c) No compromise of safety 4. Limitation of Maintenance at Sea 19
Examples of Typical Maintenance Tasks 1. Typical work: a) Swap out turbo-charger cartridge b) Lift/replace cylinder head c) Inspections of cylinder, main bearings, timing chain, etc. d) Replace fuel injectors, exhaust valves, etc. 2. The work can be scheduled to take place within 12 hours i.e. during the cargo bulk-transfer period when cargo operations are steady 3. Vessel s crew can do many tasks, but if needed technicians and skilled labor can be supplied to insure timely completion of the work 20
Return, if not approved or need more information Process for Requesting and Approving Maintenance Works Return, if not approved or need more information Return, if not approved or need more information Vessel Operator Request for work & R/A Charterer Review & Approval Approval Request Terminal Review & Approval Approval Request Port Authority Review & Final Approval 21
Experience from One LNG Terminal / Port One LNG Terminal / Port has implemented a program to allow certain maintenance works during cargo transfer following an agreed method of planning, requesting and approving the work to be done. A short summary of the experience over 1 year: 1. Cylinder liners replaced 30 2. Pistons pulled, refurbished, replaced 75 3. Exhaust valves pulled, ground, replaced 40 4. Turbo-chargers, inspections (2 on 1 engine) 20 (i.e. 40 TC s) 5. Other works timing chain adjustments, engine internal inspections, etc. All above carried out on a number of vessels no delays of the cargo operations or vessels port schedules. 22
Summary & Conclusions 1. Diesel powered LNG vessels offer: a) Safe, reliable and efficient LNG transportation services b) Higher levels of redundancy c) Higher levels of maintenance between drydocks d) Safe means of isolating and working on individual engines 2. New approaches are justified in looking at how to operate and maintain these vessels 3. Many planned maintenance activities could be accomplished in port 4. A proper method of planning, requesting, reviewing and approving such works should be put in place to allow certain maintenance tasks 5. Doing maintenance in port will not compromise terminal operations or safety and will enhance vessel safety and reliability 23
24 MARAN GAS MARITIME INC. Thank you