North Sea shuttle tanker operations: economics, emissions ...

North Sea shuttle tanker operations: economics, emissions and electri ication29 March 2021 • 09:00-10:30 BST

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Tech & Ops Webinar Day29 March 2021Panellist documents

Page 2: Catrine Vestereng, DNV4: Kjell Storelid, Wärtsilä

Shuttle Tankers - Today and in the future

2021-03-29 Riviera - Shuttle Tanker Tech & Ops Webinar

Catrine Vestereng – Global Business Director Tankers

DNV ©

The Shuttle Tanker fleet has been steady growing…

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50

100

150

1980 199019651960 1970 1975 1985 1995 2000 2005 2010 2015 2020

Shuttle tanker fleet (in number of ships)

Source: IHS Markit, Clarksons Research, 2020

DNV ©

SAFETY has been the fundament of the Shuttle Tanker development over the years…

• …environmentally friendly operations have been and are increasingly seen as a strong driver for development

• …as well as the increased focus on efficiency – or smart operation

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Efficiency

Sustain-abilitySafety

DNV © 24. MARS 2021

Sustainability

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Regulatory ambitions Charterer expectations Banks assessment

Photo courtesy of Altera – Altera Wave

DNV © 24. MARS 2021

LNG fuel has been the “fuel standard” for the newly delivered Shuttle Tankers…but what is next???

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Bridging technologies can facilitate the transition from traditional fuels, via fuels with lower-carbon footprints, to carbon-neutral fuels

VOC

DNV © 24. MARS 2021

• Machinery configuration and optimization to establish the best environmental and economical design

• The optimal configuration of Auxiliaries / Batteries and Shaft Generators

• VOC generated during cargo operation is refrigerated through the vapor recovery module and the re-liquefied VOC is stored in the dedicated LVOC tank

• VOC recovery system also can use the VOC for ship’s fuel together with LNG fuel system (mixed with LNG)

The combination with other environmental friendly solutions and fuel reducing technology is heavily explored….

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VOC Recovery Hybridization Machinery/DP optimization

• Batteries used for redundancy for safe termination in DP operation

• Batteries used as an integrated component in DP operation to reduce fuel consumption and increase efficiency

DNV ©

To reach the GHG ambitions no stone will be unturned…. …both for new design developments as well as for operational issues…

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Source: Stena Bulk

Wind assisted propulsion Air Lubrication SystemOptimized lines

DNV ©DNV ©

Smart Operations......and the key enablers to realize benefits of digitalisation

• Increase safety and save cost from remote verification and operations

• Optimize performance to improve operation

• Condition based maintenance reduce downtime & save cost

DNV ©

Digital class…guiding the industry towards smarter operations

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DNV ©

Shuttle Tankers live stressful lives……how to ensure control of the fatigue utilization?

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DNV ©

With all eyes focused on digitalization and decarbonization, the industry must continue to meet its commitment to safety

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To ensure the safe and timely transformation towards a digitally-smart and carbon-neutral future, the industry urgently needs to close the looming «safety gap» by addressing the safety-related risks.

DNV ©DNV ©

www.dnv.com

A trusted voice to tackle global transformations…Catrine Vestereng

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[email protected]+47 970 67 390

© Wärtsilä PUBLIC 26/03/2021 Developing the E-Shuttle/ Kjell Storelid1

Kjell StorelidWärtsilä Integrated Systems & Solutions

Riviera -Shuttle Tanker Tech & Ops Webinar

© Wärtsilä PUBLIC

SHUTTLE TANKER FOR THE FUTURE

26/03/2021 Developing the E-Shuttle/ Kjell Storelid2

Efficiency

Environment

Safety

26/03/2021 Developing the E-Shuttle/ Kjell Storelid3

© Wärtsilä PUBLIC Developing the E-Shuttle/ Kjell Storelid4

SHUTTLE TANKER

A unique vessel with diverse capabilities

Advanced Offshore VesselOil Tanker

© Wärtsilä PUBLIC 23/01/2019 Kjell Storelid5

TRADITIONAL SHUTTLE TANKER OPERATIONANNUAL EMISSIONS

PROPULSION AND ENERGY PRODUCTION

CARGO LOADING

Methane VOC Non Methane VOC Exhaust

© Wärtsilä PUBLIC 26.3.2021 Developing the E-Shuttle/ Kjell Storelid6

LNG AND VOC AS FUEL

FROM DUAL FUEL TO MULTI FUEL

• Diesel

• LNG

• VOC

• Future fuels


VOC RECOVER PLANT

CONDENSATION SYSTEM FOR NON METHANE VOC

• VOC Condensation Plant will liquefy NMVOC into L(Liquid)VOC and stored in LVOC tank onboard.

• Mixing of LNG with LVOC in gas form made it possible to convert the “waste” LVOC to valuable fuel for the Dual Fuel engines.

• With an average of 100 tons LVOC recovered per loading, the amount can represent up to 30-40% of total fuel requirement of the shuttle tanker, reducing the bunkering requirement correspondingly.


SURPLUS VOC

CAPTURING OF METHANE VOC DURING LOADING

• Gas Turbines will combust surplus methane gas from VOC plant on average 5 ton per loading, producing electric power to the ships electric grid system.


EMISSIONS AS FUEL

FUEL GAS MIXING WITH LVOC AND LNG


TRADITIONAL SHUTTLE TANKER POWER PLANT

G G

AC system

GG

8-10 MW12-16 MW

8-10 MW

AC system

• Main Propulsion

• Auxiliary gen-sets

• Two power plants with limited overlapping functionality


E-SHUTTLE

• Reduced installed power

• Flexible operation

• Battery Safety, or Battery Power Notation

M M

GV3

1

GV3

1

DC system

Bat

tery

xxxk

Wh

AC system

MM

GV31

GV31

DC system

Battery

xxxkWh

AC system

20 MW

GG

T


E-SHUTTLE

• Redundancy groups

• Independent barriers

• Simplicity


ENERGY CONSUMPTION

Traditional E-shuttle

HFO

LNG

SVOC

LVOC

HFO LNG SVOC LVOC

100%89%

56%

Energy consumption - 11%

Fuel bunkering - 44%

48% REDUCTION


WHAT’S NEXT

Challenge status quo

• Battery Power

• Design for Electrification

• Agile


WHAT’S NEXT

North Sea shuttle tanker operations: economics, emissions ...

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