Sonic Inspection Corporation

Providing Fire System Inspection Services to commercial buildings

A Fire Sprinkler NDT company since 2004

NFPA 25-5 Year Assessment-

NOT THE SAME AS INTERNAL INVESTIGATION

This is an NFPA 25 5 Year Assessment Report  for one system showing a RISER, a CROSS MAIN and a BRANCH LINE.  The circles with a BLUE ring around them indicate areas holding Air; Air trapped in a Wet systems causes corrosion and must be corrected.  In fact, a Dry system holding Water produces the same issues as a Wet system holding Air-both situations produce corrosion and must  be identified and corrected.   The YELLOW areas indicate mild internal scaling/corrosion but are in good shape.  If the wall loss is minimal ( plus or minus 10/1000 of an inch) most of the time a flushing can bring the system back to an operational state of compliance.


Our services are critical for those who manage or own fire sprinkler systems.  Shutting down a system, draining it  and dismantling the pipe is outdated, antiquated, subjective and has little or no scientific value leaving customers with very little data to make the correct Fire Life Safety decision.


A 5 Year Assessment is meant to provide an insight to the internal condition of your FSS and is mandatory as per NFPA 25 every 5 Years.  The following is a list of the areas that must be tested in a Wet and Dry fire sprinkler system. 

These are the 3 areas must be examined either invasively or Non invasively. 

  1.  A RISER
  2.  A CROSS MAIN
  3.  A BRANCH LINE

THIS INSPECTION WAS FINISHED IN 1 HOUR-NO SHUTDOWN, NO DRAINING, NO FIRE WATCH AND NO RISK OF WATER DAMAGE.  MORE IMPORTANTLY, THE COST WAS LESS THAN THE  "OLD METHODS" USED TODAY.

NOTICE THE THIN WALLS THAT WERE INSTALLED.  THE CUSTOMER ASSUMED THE PIPE WAS SCHEDULE 10.  THE MAINS AND CROSS  MAINS MEASURED .098-THAT IS SCHEDULE 7!   

OLD METHODS DON'T PRODUCE THIS DATA.

TEST

OLD METHODS CAN'T TELL  YOU IF YOUR SYSTEM HAS AIR POCKETS, WALL THINNING OR STANDING WATER IN DRY SYSTEMS-ALL LEADING TO INTERNAL CORROSION.