Section 9 Type approval system (for information)
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 1 General Requirements - Chapter 1 General Requirements for Classification of Engineering Systems - Section 9 Type approval system (for information)

Section 9 Type approval system (for information)

9.1 General

9.1.1 LR Type Approval is an impartial certification system that provides independent third-party Type Approval Certificates attesting to a product's conformity with specific standards or specifications. It is based on design review and type testing or where testing is not appropriate, a design analysis.

9.1.2 The LR Type Approval System is a process whereby a product is assessed in accordance with a specification, standard or code to check that it meets the stated requirements and through selective testing prove its suitability for its intended operation. The testing is carried out on a prototype or randomly selected product(s) which are representative of the manufactured product under approval. Thereafter, the manufacturer testifies that each item delivered is in conformity with that which has been type tested.

9.1.3 Details of LR's Type Approval System are contained in the following LR publications:

  1. Procedure TA02.

  2. Test Specification 1: Electrical and Control Engineering Products which are Environmentally Tested.

  3. Test Specification 2: Piping System Components.

  4. Test Specification 3: Electrical products that do not require Environmental Testing.

  5. Test Specification 4: Type Testing of Reciprocating Internal Combustion Engines and Associated Ancillary Equipment.

  6. Test Specification GT04: Gas Turbines.

9.2 Approval criteria

9.2.1 LR Type Approval does not preclude inspection and survey procedures required by these Rules for equipment to be installed in naval ships classed or intended to be classed with LR.

9.2.2 LR Type Approval is subject to the understanding that the producer's recommendations and instructions for the product and any relevant requirements of these Rules are fulfilled.

9.2.3 Where equipment or components have been type approved in accordance with procedures other than LR's, details of the product, certification and testing are to be submitted for consideration.


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