LR Addresses Fuel Changes when Entering and Exiting ECAs

By Eric Haun
Tuesday, June 17, 2014

From January 1, 2015, the maximum sulphur content of fuel oil used within the MARPOL Annex VI Emission Control Areas (ECAs) will be 0.10%, unless using an approved alternative means for controlling sulphur emissions. In most cases, the fuel used will be low-sulphur distillate oil (LSDO). Many ships operating both inside and outside ECAs will changeover between LSDO and residual fuel oil (RFO) when entering and exiting ECAs.

Lloyd’s Register Rule requirements
The Lloyd’s Register (LR) Rule requirements for fuel oil systems are contained within Pt.5 Ch.14 sections 2, 3 and 4; these contain design requirements for systems which are to operate on either LDSO or RFO grades, or both. LR also offers the optional descriptive note, DIST, for shipowners and operators applying industry best practice to the use of LSDO. The ShipRight Procedure for Assigning DIST Descriptive Note contains further guidance on measures to be considered by owners and operators.

In cases where existing fuel systems, engines or other equipment on LR classed ships are not suitable for operation on LSDO in addition to RFO, or where manufacturers have recommended equipment modifications, any proposed modifications must be submitted to LR for approval. If you are uncertain about whether equipment on board your ships requires approval, please contact your local LR office for advice.

Main points to consider when carrying out fuel changeover
Alternating satisfactorily between LSDO and RFO depends on owners and operators applying established changeover procedures and giving attention to maintenance and operating requirements. Some of the main points to consider are as follows:

Changeover procedures

  • Each ship should have an established and documented fuel changeover procedure which limits the maximum rate of temperature change when changing between RFO and LSDO.
  • Crews should receive training and instruction on applying the fuel changeover procedure.
  • Fuel oil spill returns from engines and other equipment should be routed and managed to avoid contamination of LSDO tanks with other fuels.
  • The compatibility of the RFO and LSDO should be checked. If instability occurs, it will generally be at the interface of the two fuels, necessitating more frequent filter changeover and cleaning to avoid blockage.


Maintenance

  • LSDO is less tolerant than RFO of worn fuel pumps; excessive barrel clearances will result in high leakage rates and failure to generate the required pressures, and may even prevent the engine starting. Excessive fuel supply and booster pump clearances will result in reduced delivery rates and pressures.
  • The cleaning and searching nature of LSDO relative to RFO, and the temperature differential between the two fuels, can result in seepage from pipe flanges, joints, seams and instrument connections.


Operation

  • Heating of LSDO will lower its viscosity below the minimal allowable limit of fuel equipment, requiring heating systems to be shut down and meaning that indirect heating must be avoided. Cooling or even chilling of LSDO may be required. Fuel with a higher minimum viscosity (e.g., ISO 8217 DMZ) should be considered as an alternative.
  • The base number of the engine lubricants (particularly cylinder oil) must be suitable for the sulphur content of the fuel being used.
  • The sulphur content of LSDO is expected to be close to the limit; marginal contamination with higher sulphur fuels will cause it to be noncompliant.


lr.org
 

Maritime Reporter August 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Environmental

MNZ Inspectors Board Fishing Vessels Off South Island

A joint operation by Maritime New Zealand (MNZ) and the New Zealand Defence Force – Operation Moana – has seen 16 fishing vessels operating off the west coast of

Seacure Higher Flow-Rate BWTS Certified by BSH

Evoqua inform that the Federal Maritime and Hydrographic Agency of Germany (Bundesamt für Seeschifffahrt und Hydrographie- BSH), which previously granted the Evoqua

Aiming to Make Less Fuel Go Further: Maersk Drilling

Maersk Drilling says it is engaged in an energy efficiency project for its newbuilds together with Maersk Maritime Technology. The project involves an Energy Management System (MSPS),

Fuels & Lubes

Shell: Nigeria Oil Union Strike Not Affecting Exports

A strike by Nigeria's oil unions is not having any immediate impact on crude oil exports from Africa's top exporter, despite moving into a third day, spokesmen

Ricardo to Support Kongsberg WFMS Development

Ricardo and Kongsberg have signed a framework agreement that will see Ricardo support the development of the Kongsberg Wind Farm Management System (WFMS) as well

Aiming to Make Less Fuel Go Further: Maersk Drilling

Maersk Drilling says it is engaged in an energy efficiency project for its newbuilds together with Maersk Maritime Technology. The project involves an Energy Management System (MSPS),

Marine Power

Ship Safety: IMO Committee Agree Draft IGF Code

IMO informs that the draft International Code of Safety for Ships using Gases or other Low flashpoint Fuels (IGF Code), along with proposed amendments to make the Code mandatory under SOLAS,

Cat, Deltamarin Develop Modular FPSO Power Unit

Caterpillar Launches New Modular Solution Developed with Deltamarin for FPSO and Offshore Platform Main Power at 2014 Rio Oil & Gas Expo and Conference Caterpillar

Gas Turbine Acceptance Test Completed for S. Korea Navy

Rolls-Royce has reached a milestone in the Republic of Korea Navy’s FFX frigate program, with the successful completion of acceptance tests for the MT30 gas turbine.

News

Second Sailing Added to Cleveland-Europe Express

The Port of Cleveland and Amsterdam-based Spliethoff Group announced today their mutual intent to add a second monthly vessel to the Cleveland-Europe Express (CEE),

Damen Delivers ASD Tug in Italy

RimorchiatoriRiunitiS.p.A. of Genoa (Italy) has taken delivery of a Damen ASD Tug 2411. The 70-metric-ton bollard pull azimuth stern drive tug will be temporarily deployed by Tug Malta Ltd.

Finland Grants Support to Three Small LNG Terminals

The Finnish government granted 65.2 million euros (84.22 million US dollar) in subsidies to build three small liquefied natural gas (LNG) terminals to cut on use

Classification Societies

BSH Certifies SeaCURE for Wide Range of Flow Rates

The Federal Maritime and Hydrographic Agency of Germany (Bundesamt für Seeschifffahrt und Hydrographie- BSH), which previously granted the Evoqua SeaCURE Ballast

Woodside Names LR Energy as Global Inspection Provider

Australia’s Woodside has signed on Lloyd’s Register Energy to act as its global inspection provider across a number of assets.Lloyd’s won the contract to provide surveillance inspection,

Prime Minister Solberg Visits DNV GL

Norway’s Prime Minister Erna Solberg visited DNV GL Høvik yesterday, September 16. Group President & CEO Henrik Madsen was host. “The Prime Minister was both

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Maritime Standards Naval Architecture Pipelines Port Authority Salvage Ship Repair Shipbuilding / Vessel Construction
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1178 sec (8 req/sec)