Hydrostatic tests of not less than 200 PSI for 2 hours or 50 PSI in excess of the maximum pressure, shall be conducted every 5 years on which systems including the FDC?

Hydrostatic tests of not less than 200 PSI for 2 hours or 50 PSI in excess of the maximum pressure, shall be conducted every 5 years on which systems including the FDC?

• A. Automatic and manual
• B. Wet and dry
• C. Manual and semi-automatic
• D. Manual only

Answer: (C)

The test is about verifying the long-term integrity of piping and connections under pressure in fire protection systems. Not less than 200 psi for 2 hours (or 50 psi above the maximum working pressure, whichever is greater) is mandated at 5-year intervals to ensure no leaks or weaknesses exist in the system path that includes the Fire Department Connection (FDC). Manual and semi-automatic systems are the ones covered by this 5-year hydrostatic testing, including the FDC. These configurations rely on operator action or semi-automatic actuation and can have valves and connections that aren’t continually pressurized or monitored, so a periodic, thorough pressure test is required to confirm the entire piping network—through to the FDC—can hold pressure reliably. Automatic systems are not covered by this particular 5-year requirement in the same way, hence the emphasis on manual and semi-automatic. So, the best-fit choice reflects that manual and semi-automatic fire protection systems (including the FDC) require this hydrostatic test every five years.

The test is about verifying the long-term integrity of piping and connections under pressure in fire protection systems. Not less than 200 psi for 2 hours (or 50 psi above the maximum working pressure, whichever is greater) is mandated at 5-year intervals to ensure no leaks or weaknesses exist in the system path that includes the Fire Department Connection (FDC).

Manual and semi-automatic systems are the ones covered by this 5-year hydrostatic testing, including the FDC. These configurations rely on operator action or semi-automatic actuation and can have valves and connections that aren’t continually pressurized or monitored, so a periodic, thorough pressure test is required to confirm the entire piping network—through to the FDC—can hold pressure reliably. Automatic systems are not covered by this particular 5-year requirement in the same way, hence the emphasis on manual and semi-automatic.

So, the best-fit choice reflects that manual and semi-automatic fire protection systems (including the FDC) require this hydrostatic test every five years.