Section 4 Material smoke and toxicity control
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Submarine Assurance Framework, July 2022 - Volume 1 Submarine Assurance - Part 4 Whole Boat Requirements - Chapter 4 Materials - Section 4 Material smoke and toxicity control

Section 4 Material smoke and toxicity control

Parent topic: Chapter 4 Materials

4.1 Functional objective

4.1.1 The submarine, systems, equipment and components shall be constructed from materials for which the by-products from exposure to elevated temperature and fire are controlled in all foreseeable operating conditions.

4.1.2 The submarine, systems, equipment and components shall be able to operate when exposed to the range of smoke and toxic products from fire which can be experienced on a submarine in emergency conditions.

4.2 Performance requirements

4.2.1 Smoke and toxic products released from materials exposed to the effects of fire in emergency operating conditions are to be limited. Levels of smoke and toxic product generation from the submarine, systems, equipment and components exposed to fire shall be known.

4.2.2 Smoke and toxic products released from materials exposed to the effects of elevated temperature in normal, abnormal and emergency operating conditions are to be limited. Levels of smoke and toxic product generation from the submarine, systems, equipment and components exposed to elevated temperatures shall be known. See Vol 1, Pt 4, Ch 2, 31 Material characterisation: smoke and toxicity.

4.2.3 The submarine, systems, equipment and components sensitive to smoke and fire by-products products are to be identified. They shall be able to operate with defined levels of smoke and toxic products generated byfire in emergency operating conditions or be fitted with suitable protection measures. See Vol 1, Pt 4, Ch 2, 22 Ingress protection.

4.2.4 Levels of smoke and toxic products generated from fire are to be assessed for their impact on embarked persons.

4.2.5 Where the use of materials that exceed the smoke and toxic product criteria is required for operational reasons, the Naval Administration may permit their use based on a suitable justification being provided and mitigations to manage the hazards being put in place.

4.2.6 A method for identifying and controlling the installation of materials that exceed the acceptable criteria shall be provided.

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