SC-Coppell HS-LR000203 UTILITY & ENVIRONMENTAL SERVICES
LOW PRESSURE AIR TEST FOR GRA¥1TY SANITARY SEWER
TEST PROCEDURE:
EACH SECTION OF SEWER SHALL BE TESTED BETWEEN SUCCESSIVE MANHOLES.
AIR SHALL BE INTRODUCED INTO THE PIPELINE UNTIL 4>0 PSI GAUGE PRESSURE HAS BEEN
REACHED. AT THAT TIME THE FLOW OF AIR SHALL BE REDUCED AND THE INTERNAL AIR PRESSURE
SHALL BE MAINTAINED BETWEEN 3.5 AND 4.5 PSI GAUGE FOR AT LEAST TWO (2) MINUTES TO
ALLOW THE AIR TEMPERATURE TO COME TO EQUILIBRIUM WITH THE TEMPERATURE OF THE PIPE
WALLS. PRESSURE IN THE PIPE SHALL BE CONSTANTLY MONITORED BY A GAUGE AND HOSE
ARRANGEMENT SEPARATE FROM THE HOSE USED TO INTRODUCE AIR INTO THE LINE. PRESSURE IN
THE PIPE SHALL NOT BE ALLOWED TO EXCEED 5 PSI.
AFTER THE TEMPERATURE HAS STABILIZED AND NO AIR LEAKS AT THE PLUGS HAVE BEEN FOUND,
THE AIR PRESSURE SHALL BE USED TO DETERMINE THE TIME LAPSE REQUIRED FOR THE AIR
PRESSURE TO DROP TO 2.5 PSI GAUGE.
IF THE TIME LAPSE REQUIRED FOR THE AIR PRESSURE TO DECREASE FROM 3.5 TO 2.5 PSI EXCEEDS
THAT SHOWN IN THE FOLLOWING TABLE, THE PIPE SHALL BE PRESUMED TO BE WITHIN
ACCEPTABLE LIMITS FOR LEAKAGE.
IF THE TIME LAPSED IS LESS THAN SHOWN IN THE TABLE, THE CONTRACTOR SHALL MAKE
CORRECTIONS TO REDUCE LEAKAGE TO ACCEPTABLE LIMITS.
LINE INFORMATION TEST RESULTS AIR TEST MANDREL
LINE STATION TO STATION PIPE SIZE L.F. TESTED TIME PASSED? PASSED?
5+33 4+57 6"pvc 76 5:40 X X
4+57 1 +24 8"pvc 333 7:36 X X
1+24 0+76 8"pvc 48 7:33 X X
0+76 0+00 8" 76 7:33 X X
OWNER: TRI DAL
PROJECT: St~lium Remodel & Expansion
LOCATION: Parkway & Cowboy
TESTED BY: Randy Auerb~ch
INSPECTORS FULL NAME: Larry Davis
CITY OF: Coppell
DATE:
OF UTII.ITY & ENVIRONMENTAL SERVICES INC,