8/11/2019 Mech-021
1/2
METHOD STATEMENT FOR TESTING OF DRAINAGE PIPE WORK
1. SCOPE OF WORK
Drainage system will be tested as per specification 15410.
Burried or concealed pipe work will be tested before any
Permanent covering is applied.
2. RESPONSIBILITY
2.1 ake sure t!at all t!e related works" w!ic! may prevent t!e
proper testing" are over.
2.2 #nsure pipes are straig!t" correct slope $ no obstruction
wit! ot!er services.
2.3 %nc!ors $ fasteners will be capable of developing a
restraining force commensurate wit! t!e loadof t!e water to be
filled and will suited for use wit! t!e supporting structure.
3 DESCRIPTION OF WORK
WATER TEST
&.1 '!e pipes will be leak tested after t!e
installation.
&.2 '!e pipe work will be prepared for testing by e(tending
vertically two of t!e pipe ends $ inserting test plugsin all ot!er
lower open ends.
&.& '!e pipe ends to be e(tended will be c!osen so as to
ensure air removal.
&.4 )ater will be filled t!roug! one of t!e e(tended pipe to
provide minimum 1.2 static !ead above t!e crown
of t!e pipe but not more t!an * at t!e lower end.
&.5 '!e test will be carried out for minimum of 4!ours and
no loss of water s!all occur during t!e period.
AIR TEST
&.* '!e riser pipes will be air tested after t!e
installation by using %ir 'est +it.
&., '!e pipe work will be prepared for testing by plugging
as before described.
&.- %ir will be pumped in by a !and bellow until a pressure
of 100mm of water is indicated in a glass" / 'ubeconnected to t!e
system. '!e air pressure s!ould not fall to less t!an ,5mm during a
period of 5 minuteswit!out furt!er pumping after allowing a
suitable time for stabiliation of t!e air temperature.
4. LABOUR, PLANT & MATERIAL REQUIREMENTS
4.1 3abour will be as per t!e program and as reuired for t!e
above said activity to finis! t!e ob on time.
5. SUPERISION ARRANGEMENTS
5.1 6ualified supervisors" foremen $ c!arge !ands will conduct
supervision7 to ac!ieve a good uality ofwork as per t!e approved
standard and approval to t!e satisfaction of t!e #ngineers.
!. TEMPORARY WORKS TO BE DESIGNATED AND INSTALLED
89%
". HEALTH AND SAFETY REQUIREMENTS
7.1 )!en testing t!e :afety of t!e employees will be
ensured.
,.2 %ir test kit will be operated by trained" competent $ ualif
ied personal.
