Subscribe to our Mailing Lists (It's free!)
Thursday, December 7, 2023
SAFETY4SEA
  • Home
  • Safety
    • All
    • Accidents
    • Alerts
    • Loss Prevention
    • Maritime Health
    • Regulation
    • Safety
    • Seafarers
    • Security
    shadow fleet

    UN shipping agency adopts resolution to combat illicit practices in the shadow fleet

    Strait of Bab al Mandeb

    Panama Flag urges caution to vessels transiting through the Strait of Bab al Mandeb

    Britannia Club hatch cover maintenance

    Britannia: How to ensure proper hatch cover maintenance onboard

    suez canal

    Containership in the Suez Canal strikes floating bridge

  • SEAFiT
    • All
    • Intellectual
    • Mental
    • Physical
    • Social
    • Spiritual
    Prediabetes is a serious health condition: What you need to know

    Prediabetes is a serious health condition: What you need to know

    Stay SEAFiT: Why Musculoskeletal Health matters

    Stay SEAFiT: Why Musculoskeletal Health matters

    Book Review: A role model for ship managers

    Book Review: How technology will transform the work of human experts

    Why we should start talking about mentoring in shipping

    Why we should start talking about mentoring in shipping

  • Green
    • All
    • Arctic
    • Ballast
    • Emissions
    • Fuels
    • Green Shipping
    • Pollution
    • Ship Recycling
    • Technology
    laura maersk methanol containership

    Maersk offers methanol-enabled service between Asia and Europe

    Peninsula completes LNG bunkering

    Peninsula completes LNG bunkering for Eastern Pacific Shipping’s suezmax tanke

    How to map options for green shipping corridors in seven steps

    Singapore, Los Angeles, and Long Beach ports unveil partnership strategy at COP28

    US: $118 Million to accelerate domestic biofuel production

    Preventing inadvertent use of low flashpoint: Amendments effective from January 2026

  • Smart
    • All
    • Connectivity
    • Cyber Security
    • E-navigation
    • Energy Efficiency
    • Maritime Software
    • Smart
    world's first megawatt charging system

    ABB secures contract for world’s first megawatt charging system for electric ferries

    Cyber Threat Visualization System for the Maritime Industry (CYTUR-MAP)

    Korean project comes up with best practices for cybersecurity regulations

    Jiangnan Shipyard (Group) Co., Ltd. and Bureau Veritas have issued a Joint-Declaration on 3D Auditing and Recognition, aiming at accelerating the process of 3D Submission and Approval

    Jiangnan Shipyard and Bureau Veritas accelerate adoption of 3D technology

    KOTC partners with MariApps for advanced fleet digitalization

    KOTC partners with MariApps for advanced fleet digitalization

  • Risk
    • All
    • CIC
    • Detentions
    • Fines
    • PSC Case Studies
    • PSC Focus
    • Vetting
    pilot transfer arragements

    Paris MoU: 100 ships were found with one or more deficiencies with Pilot Transfer Arrangements

    US MARAD: Regional conflict, military activity and political tensions pose threats to commercial vessels

    IRGC Navy captures smuggling ships with 34 crew members in Persian Gulf

    fire onboard cargo vessel

    RISK4SEA announces CIC Preliminary Results on fire safety (September – October)

    Port State Control (PSC) inspections

    BMA: Key requirements for Port State Control inspections

  • Others
    • All
    • Diversity in shipping
    • Maritime Knowledge
    • Offshore
    • Ports
    • Reports
    • Shipping
    • Sustainability
    • Videos
    Pacific Basin Closes New US$150 Million 3-Year Sustainability-Linked Unsecured Revolving Credit Facility

    Pacific Basin inks $150 million sustainability loan

    ABS ESG Blueprint

    ABS: Best practices for effective ESG reporting

    BIMCO: Container freight rates fall to 2019 levels while costs remain high

    BIMCO: Container freight rates fall to 2019 levels while costs remain high

    Gross weight of seaborne freight handled in EU ports

    Eurostat: EU ports rebounding from pandemic disruptions

  • Columns
    MSC Flaminia

    Limitation of liability – lessons from the MSC Flaminia

    Career Paths: Nikeel Idnani, PPG and IMarEST

    Career Paths: Nikeel Idnani, PPG and IMarEST

    International Propeller Club: A balance between environmental goals and economic realities is vital

    International Propeller Club: A balance between environmental goals and economic realities is vital

    Trending Tags

    • Book Review
    • Career Paths
    • Industry Voices
    • Interviews
    • Maripedia
    • Maritime History
    • Resilience
    • Seafarers Stories
    • SeaSense
    • Wellness Corner
  • Events
  • Plus
No Result
View All Result
  • Home
  • Safety
    • All
    • Accidents
    • Alerts
    • Loss Prevention
    • Maritime Health
    • Regulation
    • Safety
    • Seafarers
    • Security
    shadow fleet

    UN shipping agency adopts resolution to combat illicit practices in the shadow fleet

    Strait of Bab al Mandeb

    Panama Flag urges caution to vessels transiting through the Strait of Bab al Mandeb

    Britannia Club hatch cover maintenance

    Britannia: How to ensure proper hatch cover maintenance onboard

    suez canal

    Containership in the Suez Canal strikes floating bridge

  • SEAFiT
    • All
    • Intellectual
    • Mental
    • Physical
    • Social
    • Spiritual
    Prediabetes is a serious health condition: What you need to know

    Prediabetes is a serious health condition: What you need to know

    Stay SEAFiT: Why Musculoskeletal Health matters

    Stay SEAFiT: Why Musculoskeletal Health matters

    Book Review: A role model for ship managers

    Book Review: How technology will transform the work of human experts

    Why we should start talking about mentoring in shipping

    Why we should start talking about mentoring in shipping

  • Green
    • All
    • Arctic
    • Ballast
    • Emissions
    • Fuels
    • Green Shipping
    • Pollution
    • Ship Recycling
    • Technology
    laura maersk methanol containership

    Maersk offers methanol-enabled service between Asia and Europe

    Peninsula completes LNG bunkering

    Peninsula completes LNG bunkering for Eastern Pacific Shipping’s suezmax tanke

    How to map options for green shipping corridors in seven steps

    Singapore, Los Angeles, and Long Beach ports unveil partnership strategy at COP28

    US: $118 Million to accelerate domestic biofuel production

    Preventing inadvertent use of low flashpoint: Amendments effective from January 2026

  • Smart
    • All
    • Connectivity
    • Cyber Security
    • E-navigation
    • Energy Efficiency
    • Maritime Software
    • Smart
    world's first megawatt charging system

    ABB secures contract for world’s first megawatt charging system for electric ferries

    Cyber Threat Visualization System for the Maritime Industry (CYTUR-MAP)

    Korean project comes up with best practices for cybersecurity regulations

    Jiangnan Shipyard (Group) Co., Ltd. and Bureau Veritas have issued a Joint-Declaration on 3D Auditing and Recognition, aiming at accelerating the process of 3D Submission and Approval

    Jiangnan Shipyard and Bureau Veritas accelerate adoption of 3D technology

    KOTC partners with MariApps for advanced fleet digitalization

    KOTC partners with MariApps for advanced fleet digitalization

  • Risk
    • All
    • CIC
    • Detentions
    • Fines
    • PSC Case Studies
    • PSC Focus
    • Vetting
    pilot transfer arragements

    Paris MoU: 100 ships were found with one or more deficiencies with Pilot Transfer Arrangements

    US MARAD: Regional conflict, military activity and political tensions pose threats to commercial vessels

    IRGC Navy captures smuggling ships with 34 crew members in Persian Gulf

    fire onboard cargo vessel

    RISK4SEA announces CIC Preliminary Results on fire safety (September – October)

    Port State Control (PSC) inspections

    BMA: Key requirements for Port State Control inspections

  • Others
    • All
    • Diversity in shipping
    • Maritime Knowledge
    • Offshore
    • Ports
    • Reports
    • Shipping
    • Sustainability
    • Videos
    Pacific Basin Closes New US$150 Million 3-Year Sustainability-Linked Unsecured Revolving Credit Facility

    Pacific Basin inks $150 million sustainability loan

    ABS ESG Blueprint

    ABS: Best practices for effective ESG reporting

    BIMCO: Container freight rates fall to 2019 levels while costs remain high

    BIMCO: Container freight rates fall to 2019 levels while costs remain high

    Gross weight of seaborne freight handled in EU ports

    Eurostat: EU ports rebounding from pandemic disruptions

  • Columns
    MSC Flaminia

    Limitation of liability – lessons from the MSC Flaminia

    Career Paths: Nikeel Idnani, PPG and IMarEST

    Career Paths: Nikeel Idnani, PPG and IMarEST

    International Propeller Club: A balance between environmental goals and economic realities is vital

    International Propeller Club: A balance between environmental goals and economic realities is vital

    Trending Tags

    • Book Review
    • Career Paths
    • Industry Voices
    • Interviews
    • Maripedia
    • Maritime History
    • Resilience
    • Seafarers Stories
    • SeaSense
    • Wellness Corner
  • Events
  • Plus
No Result
View All Result
SAFETY4SEA

Guidance for proper operation of scrubbers for Singapore-ships

by The Editorial Team
October 17, 2019
in Emissions
intercargo

Credit: Shutterstock

FacebookTwitterEmailLinkedin

MPA Singapore published an advisory to help Singapore-registered ships to operate safely and prevent pollution during installation and operation of scrubbers. The advisory shares observations from shipboard inspections carried out by Flag State and Port State Control, and documents best practices.

Installation

Integration of scrubber engine room systems

Consideration should be given to system component compatibility like piping and electrical cable connections, materials, ratings, etc. Also to be considered is whether the capacities of existing systems can support the scrubber system requirements, such as electrical power supply, sea water supply and fire-extinguishing systems.

RelatedNews

ABS: Best practices for effective ESG reporting

UMAS: Early movers could have an advantage in energy transition costs

Electrical load

The addition of a scrubber on board will increase the operational power requirements of the ship and thus, the ship’s fuel consumption.

New ships can be designed with generators to accept the scrubber loads as part of normal operating conditions. However, for retrofit installations, these loads can be more than the surplus electrical capacity available in an existing ship’s electrical power system and may require the addition of a separate generator.

An electrical load analysis will help to determine if the ship’s existing power plant has enough capacity for the additional power demand of the scrubber.

Operation

Water level sensors, overboard valve inter-lock and local/remote selection

Much has been said regarding the risk of scrubber flooding, with possible overflow of water down the exhaust pipe, causing damage to the attached engine and/or boiler. It has been estimated that it only takes minutes to fill up the whole volume of a scrubber body for a U-type scrubber while it takes even less time for an I-type scrubber.

[smlsubform prepend=”GET THE SAFETY4SEA IN YOUR INBOX!” showname=false emailtxt=”” emailholder=”Enter your email address” showsubmit=true submittxt=”Submit” jsthanks=false thankyou=”Thank you for subscribing to our mailing list”]

The scrubber safety system should be designed to address this risk. Components of the scrubber safety system that should deal with this risk include high water level alarm, automatic cut-off of the water supply to the scrubber and opening of the exhaust bypass (if equipped). Some scrubber safety systems also include two independent and hardwire connected high water level switch design.

In the majority of open-loop systems, the overboard discharge valve has an interlock with the seawater pump. If the overboard valve is closed, the seawater pump cannot be started.

What is more, the crew must periodically and diligently conduct tests of the high water level alarms and auto-stop function of water supply.

Prohibition for open-loop scrubber discharges

The most common type of scrubber is the open-loop scrubber. It uses seawater to wash and remove the sulphur oxide from the exhaust gas,. After that, this wash water is discharged overboard. While open-loop scrubbers may comply with the IMO EGCS Guidelines, the Guidelines stipulate only four threshold limits on the wash water discharge of scrubbers, namely, pH, PAH (Polycyclic Aromatic Hydrocarbon), Turbidity and Nitrates. They do not specify a threshold limit for heavy metals.

Because of environmental and socio-economic reasons, along with other considerations, some coastal states and ports have banned the discharge of washwater from open-loop scrubbers in their waters. When operating in these waters, ships equipped with open-loop scrubbers should change over to compliant fuel oil, and ships with hybrid scrubbers should switch to the closed-loop mode of operation or use compliant fuel oil.

Scrubber residue

For ships using closed-loop scrubbers, the residue, which is separated from the washwater, is not allowed to be incinerated on board the ship as banned under MARPOL Annex VI Regulation 16.2.6. Such residue would need to be retained on board for later disposal to port reception facilities.

Exhaust and washwater emission monitoring systems

Except for the safety system, it is also important not to neglect the pollution monitoring system, which covers both the exhaust emission and the washwater discharge. The crew should perform regular testing and calibration of the Continuous Emission Monitoring System (CEMS). This includes testing of automation, alarms and function of equipment, coupled with close monitoring during operation.

A scrubber may be considered faulty when its emissions surpass the standard as prescribed in the 2015 EGCS Guidelines. Any scrubber malfunction that lasts over an one hour or repetitive malfunctions should be reported to the flag and port State’s Administration, along with actions that will be taken to address the malfunction.

A short-term temporary emission exceedance of the applicable emissions ratio does not necessarily mean that the scrubber has malfunctioned. It may take place because of the scrubber’s dynamic response when there is a sudden change in the exhaust gas flow rate to the scrubber. The ship’s crew know the typical operating conditions that may lead to a short-term temporary emission exceedance.

Carriage of compliant fuel

If the scrubber fails and cannot be put back into a compliant condition within one hour, the ship must  switch over to compliant fuel oil. Operators should consider having some quantity of compliant fuel on board as determined by the company’s SMS that could be used during the period of a scrubber malfunction.

The failure should also be properly reported in the EGCS Record Book. The reason for a failure could be because of several reasons, for example a control system error or a failure of a monitoring instrument, where the system malfunction cannot be rectified.

If the ship does not have enough amount of compliant fuel oil on board, the ship should communicate a proposed course of action to the relevant authorities, so as to bunker compliant fuel oil or conduct repair works at the earliest opportunity. The authorities need to approve the suggested course of action.

Regulation

Carriage ban and use of high sulphur fuel oil for commissioning test of scrubbers

From 1 March 2020, ships will be banned from carrying fuel oil with sulphur content more than 0.50% m/m for use on board.

Before entering a yard for scrubber retrofitting after 1 March 2020, a ship is not allowed to carry high sulphur fuel because of the carriage ban. A ship in the yard undergoing the scrubber installation will not be affected by the carriage ban as the ship is under repairs/survey/retrofit and not in operation.

After the scrubber has been installed, the carriage ban does not apply to the ship. Nevertheless, the ship must use low sulphur fuel oil for its operations until the scrubber commissioning is satisfactorily completed by the ship’s classification society and an updated International Air Pollution Prevention (IAPP) Certificate with Supplement is issued.

Finally, vessels have to use high sulphur fuel oil for the commissioning of the scrubber. In such cases, the ship owner is requested to seek MPA’s approval. The ship owner must submit detailed information on the scrubber commissioning schedule and maintain fuel oil consumption record for any third party / PSC inspection. After analyzing the application, MPA may grant an in-principle approval for the ship to use high sulphur fuel oil, specifically for the commissioning of the scrubber only.

Explore more in the following PDF

Guidance for proper operation of scrubbers for Singapore-ships

Guidance for proper operation of scrubbers for Singapore-ships
Guidance for proper operation of scrubbers for Singapore-ships
Tags: 2020 sulphur capIMO 2020MPA Singaporereducing shipping emissionsreportsscrubbersSignaporesm
Previous Post

Suncor involved in another near miss incident on Terra Nova FPSO

Next Post

Port of Seattle gathers stakeholders in fight for orcas’ protection

Related News

shipping leaders join statement net zero hydrogen shipping 2030 at CIO 28
Green Shipping

Shipping leaders set targets for 2030 to enable a net zero sector

December 6, 2023
Nestlé cuts ocean transport emissions with Maersk’s ECO Delivery solution
Green Shipping

Nestlé becomes the next company to use Maersk’s ECO Delivery solution

December 6, 2023
Steel Demand and Emissions in Shipping 2024-2050
Emissions

LR: Steel demand and emissions in shipping 2024-2050

December 6, 2023
How to map options for green shipping corridors in seven steps
Green Shipping

Advancing just and inclusive green shipping corridors for a sustainable future

December 4, 2023
south korea covid testing
Loss Prevention

IEEFA report warns of overinvestment risks in South Korea’s LNG infrastructure expansion

December 4, 2023
MPA Singapore and IACS collaborate on digitalization and decarbonization
Green Shipping

IACS and MPA Singapore collaborate on maritime digitalisation and decarbonisation

December 4, 2023

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Explore more

No Result
View All Result

Recommended

Crew of Galaxy Leader granted limited contact with families amidst efforts for release

Crew of Galaxy Leader granted limited contact with families amidst efforts for release

December 6, 2023
singapore border measures

Do you know what GT and DWT measure in a ship?

November 10, 2021
MARITIME EVENTS

Explore

  • Safety
  • SEAFiT
  • Green
  • Smart
  • Risk
  • Others
  • SAFETY4SEA Events
  • SAFETY4SEA Plus Subscription

Useful Links

  • About
  • Disclaimer
  • Editorial Policies
  • Advertising
  • Content Marketing
  • Contact

© 2021 SAFETY4SEA

No Result
View All Result
  • Safety
    • Accidents
    • Alerts
    • Loss Prevention
    • Maritime Health
    • Regulation
    • Safety
    • Seafarers
    • Security
  • SEAFiT
    • Intellectual
    • Mental
    • Physical
    • Social
    • Spiritual
  • Green
    • Arctic
    • Ballast
    • Emissions
    • Fuels
    • Green Shipping
    • Pollution
    • Ship Recycling
    • Technology
  • Smart
    • Connectivity
    • Cyber Security
    • E-navigation
    • Energy Efficiency
    • Maritime Software
    • Smart
  • Risk
    • CIC
    • Detentions
    • Fines
    • PSC Case Studies
    • PSC Focus
    • Vetting
  • Others
    • Diversity in shipping
    • Maritime Knowledge
    • Offshore
    • Ports
    • Reports
    • Shipping
    • Sustainability
    • Videos
  • Columns
    • Opinions
    • Book Review
    • Career Paths
    • Industry Voices
    • Interviews
    • Maripedia
    • Maritime History
    • Resilience
    • Seafarers Stories
    • SeaSense
    • Wellness Corner
  • SAFETY4SEA Events
  • SAFETY4SEA Plus Subscription

© 2021 SAFETY4SEA

This website uses cookies. By continuing to use this website you are giving consent to cookies being used. Visit our Disclaimer.