After completion of acceptance testing, the foam system shall be flushed.

After completion of acceptance testing, the foam system shall be flushed.

• A. False
• B. Not specified
• C. N/A
• D. True

Answer: (D)

Flushing after acceptance testing ensures the foam system is clean, ready, and reliable in real service. During testing, water and foam concentrate substitutes flow through the piping and proportioning components, and air or debris can be introduced or dislodged. If these test residues aren’t purged, they can affect the foam concentrate mix, clog nozzles, or leave air pockets that hinder actual discharge. Flushing clears out contaminants, purges air, and confirms that the discharge paths are free of obstructions, so the system will performance as intended when needed. This is why flushing is specified after acceptance testing.

Flushing after acceptance testing ensures the foam system is clean, ready, and reliable in real service. During testing, water and foam concentrate substitutes flow through the piping and proportioning components, and air or debris can be introduced or dislodged. If these test residues aren’t purged, they can affect the foam concentrate mix, clog nozzles, or leave air pockets that hinder actual discharge. Flushing clears out contaminants, purges air, and confirms that the discharge paths are free of obstructions, so the system will performance as intended when needed. This is why flushing is specified after acceptance testing.