Section 1 General requirements
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 4 Aircraft/Helicopter/Vehicle Fuel Piping and Arrangements - Section 1 General requirements

Section 1 General requirements

Parent topic: Chapter 4 Aircraft/Helicopter/Vehicle Fuel Piping and Arrangements

1.1 Application

1.1.1 This Chapter covers the requirements for piping systems and arrangements in naval ships for bunkering, storing and distribution of fuel for aircraft/helicopters and engined vehicles that are part of the ship’s operational equipment.

1.1.2 In addition to the requirements detailed in this Chapter, the requirements of Vol 2, Pt 7, Ch 1 Piping Design Requirements and Vol 2, Pt 7, Ch 2, 1 General requirements, Vol 2, Pt 7, Ch 2, 2 Construction and installation and Vol 2, Pt 7, Ch 2, 10 Air, overflow and sounding pipes are to be complied with where applicable.

1.1.3 The requirements of Vol 2, Pt 7, Ch 2, 3 Drainage of compartments, other than machinery spaces are also to be complied with, so far as they are applicable for the drainage of tanks, oily bilges and cofferdams, etc.

1.1.4 The requirements address refuelling systems where the flash point of the fuel is:

  1. not less than 60ºC (closed-cup test);

  2. less than 60ºC (closed-cup test).

1.1.5 The requirements of the Naval Administration and standards forNATO interoperability, are to be specified by the Owner.

1.1.6 Electrical arrangements are to comply with Vol 2, Pt 9 Electrotechnical Systems as applicable. Attention is drawn to Vol 2, Pt 9, Ch 5 Hazardous Areas where it is intended to carry fuel with a flash point not exceeding 60ºC.

1.2 Documentation required for design review

1.2.1 The following plans and particulars are to be submitted for approval:

  • Description of fuel with statement of minimum flash point (closed-cup test).
  • Arrangement of fuel storage and piping.
  • Storage tanks not forming part of the ship’s structure.
  • Arrangements for drainage, ventilation and sounding of spaces adjacent to storage tanks where the flash point is less than 60º C.
  • Details of pumping units.
  • Arrangements for testing and increasing the flash point of low flash fuel from aircraft/helicopters for transfer into the ship’s storage system.
  • Arrangements for gas analysing arrangements required by Vol 2, Pt 7, Ch 4, 3.1 General 3.1.5.
  • Arrangements for stripping water from storage tanks.
  • Arrangements for emergency cross connections between aircraft/helicopter and ship’s fuel systems.

1.2.2  System Design Description. A System Design Description is to be submitted for information, see Vol 2, Pt 1, Ch 3, 3.5 System design description.

1.2.3  Operating manuals. Operating manuals are to be provided on board and submitted for information where requested by LR. The manuals are to include the following information:

  1. Particulars and description of systems and arrangements for bunkering, fuelling and defuelling aircraft/ helicopters and vehicles.

  2. Operating instructions for the systems.

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