In those portions of the system intended to handle oxygen at pressures greater than 350 psi, the interconnecting hose shall not contain __________ materials.

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Multiple Choice

In those portions of the system intended to handle oxygen at pressures greater than 350 psi, the interconnecting hose shall not contain __________ materials.

Explanation:
High-pressure oxygen systems have a significantly increased ignition risk. Polymeric materials are flammable in oxygen-rich environments and can ignite or burn rapidly when exposed to high-purity oxygen, especially above 350 psi. They may also shed particulates or fail in a way that compromises safety. Metals such as stainless steel, copper, and brass resist ignition under oxygen service and provide a durable, leak-free path, making them suitable for high-pressure interconnecting hoses. Hence, interconnecting hoses in these portions of the system should not contain polymeric materials.

High-pressure oxygen systems have a significantly increased ignition risk. Polymeric materials are flammable in oxygen-rich environments and can ignite or burn rapidly when exposed to high-purity oxygen, especially above 350 psi. They may also shed particulates or fail in a way that compromises safety. Metals such as stainless steel, copper, and brass resist ignition under oxygen service and provide a durable, leak-free path, making them suitable for high-pressure interconnecting hoses. Hence, interconnecting hoses in these portions of the system should not contain polymeric materials.

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