Time is short to IMO revised G8

Alfa Laval PureBallast 3 is ready

Time to have IMO revised G8 in focus

If you sail internationally and outside United States waters, the IMO revised G8 guidelines affect you. The vast majority of the worlds ports will close to ballast water treatment systems installed after 28 October 2020 that don't meet IMO revised G8 requirements. Missing that fact could leave world ports off limits to your vessel.

Qu'est-ce que le G8 révisé de l'OMI?

Les directives G8 de l’OMI définissent le processus d’homologation de type des systèmes de traitement des eaux de ballast en vertu de la législation de l’OMI. Définies à l'origine en 2005, elles ont fait l'objet d'une révision critique en 2016. Cette révision entrera en vigueur le 28 octobre 2020.

Pourquoi les directives du G8 de l’OMI ont-elles été révisées?

Les directives révisées du G8, également appelées code BWMS, sont robustes et plus conformes aux exigences actuelles de la US Coast Guard (USCG). Ils ont été développés parce que certains systèmes de traitement des eaux de ballast approuvés selon les directives originales du G8 peuvent ne pas respecter la norme de performance IMO D-2 dans la pratique.

La pression pour les directives révisées du G8 a été conduite en partie par des organisations de clients comme la Chambre internationale des transports maritimes (ICS). L'objectif était de s'assurer que les investissements dans le traitement des eaux de ballast répondront aux exigences de rejet - au lieu de simplement ajouter du matériel.

How do the IMO revised G8 guidelines affect you?

The deadline for ballast water treatment systems to comply with the IMO revised G8 guidelines is rapidly approaching. In fact, the implementation date of 28 October 2020 has consequences already now.

What the IMO revised G8 guidelines say

If the installation of a ballast water treatment system falls on or after 28 October 2020, the system has to be type approved according to the revised G8 requirements.

Until that date, systems approved under the former G8 guidelines can still be installed. No upgrades to these systems will be necessary. But once the date arrives, installation of a system purchased without revised G8 type approval will not be permitted for global use.

What this means for you in practice

Ballast water treatment systems selected today will likely be installed after the implementation date. This means you should choose a system with revised G8 type approval.

Unfortunately, not all suppliers have received updated type approvals for their systems – and many risk missing the deadline. The robustness of the revised G8 procedures means type approval can take time, and success is not guaranteed.

Taking a risk could leave you committed to a system that cannot be used globally. Since IMO legislation applies everywhere outside United States waters, 95% of world ports could be out of reach to your vessel.

Why PureBallast 3 is ready for IMO revised G8

When selecting for installations in 2020 and beyond, the only safe bet is a ballast water treatment system that already has IMO revised G8 type approval. Alfa Laval PureBallast 3 was the very first to receive it.

First with IMO revised G8 type approval

Providing compliance without limiting global vessel operations has always been the focus for Alfa Laval and PureBallast 3. Since the vast majority of the world’s ports fall under IMO jurisdiction, being ready before the revised G8 implementation date was a high, early priority.

Tests with marine, brackish and fresh water were completed under the new G8 regime in Q3 2017. PureBallast 3 received the industry’s first revised G8 certificate in February 2018 – with no changes to its hardware or power consumption.

This means Alfa Laval customers can look ahead with confidence. PureBallast 3 will continue to provide market-leading performance, even after 28 October 2020.

Read more about IMO revised G8 type approval for PureBallast 3

Canada's Marine Experts

In Atlantic (Provinces) Canada:

Brian Burden, Regional Sales Manager
+1 902-579-4469
Email Brian


In Western Canada

Derek Gluschenko Regional Sales Manager
derek gluschenko+1 604 734 2225
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In Quebec:

Pierre Gosselin, Directeur des ventes techniques
Pierre Gosselin +1 450 466 1120
Écrire à Pierre


In Central Canada

Vikram Nagpal Regional Sales Manager
+1 888 253 2226, Ext. 338
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For All Marine Systems

John Goswell Marine Division Manager
John Goswell Marine Systems+1 416-297-3410
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FAQ – PureBallast 3 and IMO revised G8

Here are answers to some to common questions regarding the type approval of PureBallast 3 according to the IMO revised G8 guidelines.

1. What tests were needed to type approve PureBallast 3 according to the IMO revised G8 requirements?

Two additional land-based tests of biological efficacy, performed without holding time, had to be conducted in each water salinity. The component environmental tests are more in line with the requirements of U.S. Coast Guard (USCG). This means that the requirements are more stringent compared to the original 2008 G8 requirements.

2. Are there any hardware changes to PureBallast 3 as a result of the IMO revised G8 guidelines?

No new hardware has been added, but a conductivity sensor is integrated to the flow meter to determine which salinity the system is being operated in. For operation in fresh water, a flow control function has been included, which allows reduced flow in challenging waters in order to meet UVT limits.

3. Can a previously installed PureBallast 3 system be upgraded for compliance with the IMO revised G8 guidelines?

It is not necessary to upgrade. IMO has issued a resolution stating that vessels which have installed legacy systems should not be penalized.

4. Why is it important that PureBallast 3 has IMO revised G8 type approval before the implementation date?

The IMO revised G8 requirements enter into force on 28 October 2020, but nearly all ballast water treatment systems selected today will be installed after that date. To be eligible for installation on or after 28 October 2020, the system must have IMO revised G8 type approval by that time. Given that the more stringent type approval process can be long and difficult, customers make a safe choice by selecting a system that has already succeeded.

Find out how IMO revised G8 affects your operation

With many years of experience, we can guide you to the right PureBallast 3 solution for your vessel. Contact us to get secured compliance that secures access to ports all over the world.