Section 5 Plans and particulars to be submitted
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Naval Ships, January 2023 - Volume 3 Additional Class Notations - Part 1 Ship Type Capability - Chapter 5 Replenishment at Sea (RAS) Systems - Section 5 Plans and particulars to be submitted

Section 5 Plans and particulars to be submitted

Parent topic: Chapter 5 Replenishment at Sea (RAS) Systems

5.1 Plans and information

5.1.1 Three copies of the plans and information stated in Vol 3, Pt 1, Ch 5, 5.1 Plans and information 5.1.2 are to be submitted to LR as applicable.

5.1.2  System Operational Concept. A System Operational Concept of the RAS systems that details the capability and functionality under defined operating and emergency conditions. The System Operational Concept is to be agreed between the designers and Owners and is to include as applicable:

  1. Required class notations.

  2. Details of intended supplying and receiving ships.

  3. Description of each RAS operation and combination of equipment required.

  4. Plans showing each proposed combination of equipment, fully rigged.

  5. Details of solids that may be received or supplied (maximum size and weight together with UN hazard category if applicable) together with transfer rates.

  6. Details of liquids that may be received or supplied, (including flash point of oils and transfer rates).

  7. Details of the range of ship's speeds, sea and environmental conditions under which each RAS operation may be undertaken.

  8. Interoperability capability.

  9. Manning requirements.

  10. Details of arrangements for RAS operations in darkness.

  11. Details of hose clearing/drainage arrangements after RAS operations have been completed, see Vol 3, Pt 1, Ch 5, 9.1 General 9.1.4.

5.1.3  Engineering and safety justification. An engineering and safety justification for the RAS systems stating design standards used, assumptions made and any technical evidence. The justification is to:

  1. State all design standards used for the design, manufacture, installation and testing of RAS systems and equipment.

  2. Provide details of all RAS equipment and compatibility of different items of equipment.

  3. Provide evidence that all RAS operations (equipment and combinations) at each RAS station as identified in the design statement, can be carried out safely and in accordance with classification and equipment manufacturer's requirements.

  4. Identify safe equipment configurations.

  5. Provide calculations that demonstrate that the structural loading is in accordance with Rule requirements.

  6. Provide calculations that demonstrate that equipment loads are in accordance with manufacturer's specified limits.

  7. Provide evidence that sufficient control, monitoring and communication facilities are provided to conduct RAS operations safely and efficiently.

  8. Limits are to be defined in terms of lateral separation between vessels, ship's speeds, wind force, sea conditions (wave height, period and direction) and environmental conditions (visibility). The validation of potential operational scenarios may be by using a set of generic ship types agreed between the Owner and the designer.

  9. Examine the effect of environmental conditions (e.g. sea state, water depth, visibility, wind strength, etc.) on the proposed RAS operations and define limiting conditions and define limiting environmental conditions for each RAS operation.

  10. Address the specific needs of emergency breakaway and demonstrate that such a procedure can be undertaken with all RAS equipment configurations at each RAS station. The recovery of equipment after an emergency breakaway is also to be addressed.

  11. Provide evidence that the ship internal, ship to ship and ship to helicopter communications systems will allow safe and efficient communications and RAS operations. The communications equipment and systems provided are to take into account the design of the ship and intended method of operation. Redundancy is also to be considered.

  12. Provide evidence that each system is designed to minimise the risks associated with handling the particular cargo (e.g. static electricity with aviation fuel).

  13. Address the disabling of automatic control, protection and safety functions for machinery and engineering systems where these are considered essential during replenishment at sea activities. The arrangements are to be consistent with the requirements of Vol 2, Pt 1, Ch 3, 4.9 Military requirements 4.9.4

Where applied standards are not in the public domain, e.g. ATP 16 (latest version) covering NATO Replenishment at Sea, a copy is to be included with the engineering and safety justification.

5.1.4  General arrangement plan. A general arrangement plan of the ship showing the following information:

  1. Position of each RAS station, with identifiable reference to the engineering and safety justification and System Operational Concept.

  2. The tasks to be carried out at each RAS station.

  3. Position of observation and control positions.

  4. Arcs of fields of view and operation from each of the observation and control positions and RAS stations.

5.1.5  Structural plans. Plans required by Vol 1, Pt 4, Ch 1, 5 Military design requirements and Vol 1, Pt 4, Ch 2, 9 Military installation and operational loads.

5.1.6  Fluid transfer plans and particulars.For the receiving ship, plans in diagrammatic form showing filling arrangements from the filling connection to filling trunks (where installed) and subsequently to each storage tank. The plans are to include a statement of the minimum flash point (closed-cup test) together with the required and the maximum transfer/filling rates. For the supplying ship, plans in diagrammatic form showing pumping and piping arrangements from storage tanks to the ship's discharge connection. See also Vol 3, Pt 1, Ch 5, 9.1 General 9.1.10.

5.1.7  Lifting appliances. Plans and details of all lifting appliances as required by LR’s Code for Lifting Appliances in a Marine Environment or other specified design code.

5.1.8  RAS equipment. Details of equipment identified for RAS operations. Design and installation loads on the equipment together with details of securing and holding down arrangements. Details of the access required for maintenance and to operate the equipment.

5.1.9  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 a description of each RAS system.

  2. Operating and maintenance instructions for all equipment.

  3. Matrix of safe combinations of equipment and details of permitted load that may be carried by each combination.

  4. Test procedures for each system.

  5. Details of valve and pipe configurations when transferring fluids.

  6. Details of arrangements for transfer of solids and personnel.

  7. Details of night operations.

5.1.10  Testing and trials procedures. A schedule of testing and trials to demonstrate that systems are capable of operating as described in the System Operational Concept. The testing and trials procedures are to include details of through life load testing which includes the periodicity of load testing for different items of equipment.

5.1.11 Where an evaluation of an engineering and safety justification is required for the propulsion and steering arrangements, see Vol 3, Pt 1, Ch 5, 7.2 Machinery redundancy 7.2.2, the following information is to be submitted:

  1. A Failure Modes and Effects Analysis (FMEA), see Vol 2, Pt 1, Ch 3, 18 Risk Assessment (RA).

  2. Design standards and any assumptions made.

  3. Limiting operating parameters for ship and machinery installation.

  4. A statement and evidence in respect of the reliability of any non-duplicated components.

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