In a new-building vessel, can it be added to the Ballast Water Management Plan as a contingency measure the need to perform ballasting without the BWTS when the water quality falls outside of the system design limitations of the system?
@Natalia.Kleopa for the time being, the only the official guidance on contingency measures related to ballast water treatment operations is the IMO Circular BWM.2 / Circ.62 (July 2017).
There is no regulatory framework allowing Class Societies to approve the official bypassing of the BWTS in the Ballast Water Management Plan, yet.
However, the ballast water quality issue is to be discussed further during the MEPC79 in December 2022.
You may also refer to the below Queseas thread.