Section 5 Impact control
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Special Service Craft, July 2022 - Part 8 Hull Construction in Composite - Chapter 7 Failure Modes Control - Section 5 Impact control

Section 5 Impact control

Parent topic: Chapter 7 Failure Modes Control

5.1 General

5.1.1 Skin thicknesses may be accepted which are below the stated Rule minima indicated throughout the Rules provided that acceptable stress levels are predicted for the in service condition and that equivalent impact strength can be demonstrated to the satisfaction of LR. In such cases due consideration is to be given to providing a satisfactory water barrier and ensuring suitability to resist abrasion, local point loadings, etc. see Pt 8, Ch 3, 2 Minimum thickness requirements.

5.2 Testing

5.2.1 All impact tests are to be comparative tests using the Rule basic laminate as the comparative standard. Original and tested samples of both the proposed laminate and the Rule comparison laminate are to be submitted for LR's consideration together with a detailed test report. Testing is to be carried out by the Builder and witnessed by the LR Surveyor or at an independent testing establishment, acceptable to LR. Comparison will be by visual inspection only and interpretation of the results will be at the sole discretion of LR.

Copyright 2022 Clasifications Register Group Limited, International Maritime Organization, International Labour Organization or Maritime and Coastguard Agency. All rights reserved. Clasifications Register Group Limited, its affiliates and subsidiaries and their respective officers, employees or agents are, individually and collectively, referred to in this clause as 'Clasifications Register'. Clasifications Register assumes no responsibility and shall not be liable to any person for any loss, damage or expense caused by reliance on the information or advice in this document or howsoever provided, unless that person has signed a contract with the relevant Clasifications Register entity for the provision of this information or advice and in that case any responsibility or liability is exclusively on the terms and conditions set out in that contract.