PPR Pipe Installation method

7.1

Installation of PPR

7.1.1

Prior Prior to installati installations ons site will will be checked checked for the accessibi accessibility lity.. Also Also Co-ordin Co-ordinatio ation n will be done with other services at the time of marking.

7.1.2 7.1.2

Deter Determi mine ne the positio position n of sppor spports ts and install install the sppo spports rts as per the approve approved d standard detail drawings.

7.1.!

"he water water spply spply piping piping system system is polypr polypropy opylene lene #PP$% #PP$% pipes pipes system system and &oints &oints are are to be fsion welded' electro welded type.

7.1.(

)very chang change e in directio directions ns of the pipes' pipes' spports spports shall shall be provi provided ded with with in 1*+mm 1*+mm on both sides' irrespective of distance mentioned in the standard detail drawing.

7.1.*

"he polypr polypropyl opylene ene pipes pipes and fittings fittings will will be &oined &oined by fsion fsion &ointin &ointing g method' method' in which which two pieces of pipes and fitting are heated by a heating tool ntil their srface melt' and then they are fitted together.

7.1., 7.1.,

"he 1,mm 1,mm to ,!mm pipes pipes and fitting fittings s are fsion fsion &ointe &ointed d by hand hand held held fsion fsion tool. tool. "he 7*mm to 11+mm diameter pipes are &oined by bench monted fsion machines.

7.1.7 7.1.7

"he fsion fsion tool tool is plgge plgged d into an 11+ 11+ spply spply and and allowe allowed d to heat heat p for abot abot * mintes. mintes. "he temperat temperatre re is checked checked sing a temple stick stick which melts at 2*! C temperatres. °

7.1. 7.1.

"he srfa srface ce of the pipe pipe and intern internal al srfac srface e of the fitting fittings s are cleane cleaned d by a moist moist cloth with cleaning flid' as per manfactrer recommendation. recommendation.

7.1./

"he pipe pipe mst mst be be ct at right right angles angles sing sing pipe pipe ctters ctters.. 0hears 0hears are are sed sed for 1,mm to 2*mm pipe diameter and roller ctters are sed for pipe of 2*mm to ,!mm diameter' diameter' after this t his process chamfering will take place.

7.1.1+ ark the welding welding depth at the end end of the pipe with with the enclosed pencil pencil and template. template. 7.1.11 "he pipe pipe and fitting are pshed simltaneosly simltaneosly on to the heating heating bshes. bshes. hen their  their  srface comes in contact with heating plate they will start to melt. 7.1.12 7.1.12 "he insertio insertion n mark mst be seen seen all the time dring dring melting melting process. process. "he fitting fitting is pshed on to the heating bsh ntil it reaches the first ridge on the bsh. 7.1.1! 7.1.1! "he timer is then started started when pipe and fittings fittings are flly inserted. inserted. hen the timer  beeps withdraw the pipe and fitting 3ickly and align pipe and fitting after bringing them together. 7.1.1( 7.1.1( 4t is important important to bring the pipe pipe and fitting together together 3ickly 3ickly to prevent their their srface cooling and drying. drying. "he molten pipes and fittings fittings shold be aligned together together withot any twisting. 7.1.1* "he pipe is pshed pshed into fitting fitting pto insertion mark. mark. After &ointing &ointing one one bead of molten material is formed on pipe and another bead on the fitting. "his demonstrates a perfect &oint. 7.1.1, All valves will be installed installed as per approved approved shop drawings. drawings. 7.1.17 )nsre all valves' strainers strainers and inline inline fittings orientation is correct. 7.3

Testing of Water Supply Pipe work 

7.!.1

5ydralic testing will be carried ot for checking leaks and defects in new pipe work. "he testing will be performed in sections and separate test reports will be prepared.

7.!.2

"he pipes will be &ointed' plgged and shall have been in position for at least 2(hors before test are carried ot.

7.!.!

"he pipes shall be tested for water pressre holding and alignment.

7.!.(

"he water for testing will be obtained from the temporary water spply provided at the site.

7.!.*

inimm of 2 identical pressre gages will be installed at e6treme ends of the circit however one pressre gage is enogh for the testing of water spply pipes inside the toilets.

7.!.,

"he system will be pressri8ed sing manal pmps in increment of 2* 9 of the test pressre. A standing period of 1+ mintes will be allowed after each increment of  pressre.

 A record will be maintained for water temperatre along with pressre readings