The following pressures have been established for 5 inch hose: 1) Service Test Pressure: 200 psi 2) Working Pressure: 150 psi

The following pressures have been established for 5 inch hose: 1) Service Test Pressure: 200 psi 2) Working Pressure: 150 psi

• A. Service Test Pressure: 200 psi; Working Pressure: 150 psi
• B. Service Test Pressure: 150 psi; Working Pressure: 200 psi
• C. Service Test Pressure: 250 psi; Working Pressure: 100 psi
• D. Service Test Pressure: 100 psi; Working Pressure: 250 psi

Answer: (A)

For this hose, two different pressures are used for different purposes. The service test pressure is the higher value used during hydrostatic testing to prove the hose can handle a pressure burst without leaking or failing. The working pressure is the lower value representing the maximum pressure the hose is designed to carry during normal firefighting use. For a 5-inch supply hose, the established ratings are 200 psi for the service test and 150 psi for the working pressure. This means the hose should pass a 200 psi test but be operated safely at up to 150 psi in service. The option that lists those exact pressures matches these standard ratings, while other options either swap the numbers or use unrelated values.

For this hose, two different pressures are used for different purposes. The service test pressure is the higher value used during hydrostatic testing to prove the hose can handle a pressure burst without leaking or failing. The working pressure is the lower value representing the maximum pressure the hose is designed to carry during normal firefighting use. For a 5-inch supply hose, the established ratings are 200 psi for the service test and 150 psi for the working pressure. This means the hose should pass a 200 psi test but be operated safely at up to 150 psi in service. The option that lists those exact pressures matches these standard ratings, while other options either swap the numbers or use unrelated values.