When a cylinder is used to store CO₂ in a fixed firefighting system and is retested in accordance with regulations, all flexible connections between cylinders and distribution piping must be renewed or tested at __________.
A
2750 psi
B
1500 psi
C
1000 psi
D
300 psi
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Question 1 / 205eccef9ebacbc34ba4d46499
Question 1 of 205eccef9ebacbc34ba4d46499
When a cylinder is used to store CO₂ in a fixed firefighting system and is retested in accordance with regulations, all flexible connections between cylinders and distribution piping must be renewed or tested at __________.
When a cylinder is used to store CO₂ in a fixed firefighting system and is retested in accordance with regulations, all flexible connections between cylinders and distribution piping must be renewed or tested at __________.