Class 1 (Chief Engineer) Engineering Management 📅 Jan 2022

Exam Question

With regard to Ballast Water Management Convention, explain below:

(a) Ballast Water Exchange Standard

(b) Ballast Water Performance standard

(d) Approval methods for treatment system using active and non-active substances

(e) What are the marine pollution problems related to port development such as ballast water, dredging and spills from ships

Reference Answer

### (a) Ballast Water Exchange Standard (Regulation D-1)
The Ballast Water Exchange Standard (D-1) is a method for managing ballast water by replacing coastal or port water with open-ocean water. This process significantly reduces the concentration of coastal organisms that may be invasive in the destination port. The standard is defined by the International Convention for the Control and Management of Ships' Ballast Water and Sediments, 2004.
**Key Requirements:**
* **Volumetric Efficiency:** The standard requires a volumetric exchange efficiency of at least 95%. This means that 95% of the water in the ballast tanks must be replaced with open-ocean water.

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