Section 11 Ballast System
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Naval Ships, January 2023 - Volume 2 Machinery and Engineering Systems - Part 7 Piping Systems - Chapter 2 Ship Piping Systems - Section 11 Ballast System

Section 11 Ballast System

Parent topic: Chapter 2 Ship Piping Systems

11.1 General

11.1.1 Any deck and bulkhead penetrations shall meet the requirements of Vol 2, Pt 7, Ch 2, 1 General requirements

11.1.2 There shall be no transfer of ballast water from hazardous areas to non-hazardous areas.

11.1.3 Where transfer of ballast water from non-hazardous to hazardous areas is required, connection between the areas is to be non-permanent. Such non-permanent connections are to be in accordance with the Rules for Ships, Pt 5, Ch 15, 2 Piping systems for bilge, ballast, fuel oil, etc..

11.2 Standby arrangements for ballast pumping

11.2.1 Where ballasting/de-ballasting is required for ship operation, standby ballast pumping arrangements are to be provided, see also Vol 2, Pt 7, Ch 2, 6.2 General service pumps 6.2.1.

11.3 Integrated cargo and ballast systems

11.3.1 Controls used for stopping the cargo system, including normal controls, safety shutdowns and Emergency Stop Functions as defined by Vol 2, Pt 9, Ch 1, 1.3 Definitions, shall not stop operation of the ballast system. All control systems shall, as a minimum, meet the applicable requirements of Vol 2, Pt 9, Ch 1, 2.7 Electrical supplies to systems fulfilling military requirement.

11.3.2 Where UMS, CCS or ICC notations are applied, the control systems shall also meet the requirements of Vol 2, Pt 9, Ch 1, 4 Unattended machinery space(s) — UMS notation, Vol 2, Pt 9, Ch 1, 5 Machinery operated from a centralised control station – CCS notation and Vol 2, Pt 9, Ch 1, 6 Integrated computer control - ICC notation respectively and the further applicable requirements of Vol 2, Pt 9, Ch 12, 1 Testing and trials.

11.4 Ballast water treatment system installations

11.4.1 Failure of a ballast water treatment system shall not impair or restrict ballasting or de-ballasting operations.

11.4.2 Failure of a ballast water treatment system shall not impair or restrict any other Mobility and/or Ship Type piping system, as defined by Ch 1,2.2.1, or any other Mobility system or Ship Type system as defined by Vol 2, Pt 1, Ch 1, 3.1 Categories 3.1.5.

11.4.3 Ballast water treatment systems are to be installed with a by-pass arrangement, designed to ensure that the treatment system can be efficiently isolated from the ballast water system without impairing ballast water flow.

11.4.4 All piping and components as defined inVol 2, Pt 7, Ch 1, 2.2 Definitions 2.2.3 and forming part of the ballast water treatment system shall meet the requirements of Vol 2, Pt 7, Ch 1 Piping Design Requirements.

11.4.5 All electrical and control equipment forming part of ballast water treatment units shall meet the applicable requirements of Vol 2, Pt 9 Electrotechnical Systems.

11.4.6 Spaces where ballast water treatment system components are installed are to be assessed to determine their appropriate hazardous area classification in accordance with the requirements of Vol 2, Pt 9, Ch 5 Hazardous Areas.

11.4.7 Spaces where ballast water treatment system components are installed are to be assessed for hazards from poisonous, toxic/corrosive, asphyxiant or irritant gases under normal and reasonably foreseeable abnormal conditions.

11.4.8 Where a space containing a ballast water treatment system has been classified as a hazardous area or the presence of other hazardous gases has been identified, then the following applicable requirements are to be applied:

  1. the Gas detection equipment is to be designed, installed and tested in accordance with IEC 60079-29-2: Explosive atmospheres Part 29-2: Gas detectors — Selection, installation, use and maintenance of detectors for flammable gases and oxygen and is to be suitable for the gases to be detected;
  2. the requirements of Vol 2, Pt 9, Ch 5 Hazardous Areas; and
  3. the requirements of Vol 2, Pt 9, Ch 11 Gas detection.

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