Cure in Place Pipe 1

[koshyeng]

Is anyone familiar with CIPP liner for high temperature service? Service temperature is 170 deg F with less than 5% of ketones.

Appreciate your advice.

 

[koshyeng]

Its gravity flow underground line about 20" diameter

 

[dicksewerrat]

It can be done. You have to ask for a different resin to handle the temps. Standard resin would work if it was only hot once in awhile.

Richard A. Cornelius, P.E.

http://WWW.amlinereast.com

 

[bimr]

That is a tough application. You do not mention the pipe size nor the pressure. The pressure will have a major impact on the material selection.

Two materials used for liners are polyester and vinyl ester. The vinyl esters are usually highly restistant to chemical attack.

Most of the CIPP products are limited to 120-140 Degree F.

You also do not characterize the ketone. The ketone can be a solvent. It will be difficult to predict the effect of the ketone because there will be limited data available on the chemical resistance at that concentration.

You also have to estimate the long term chemical resistance versus short term resistance. There may also be another chemical in the fluid that effects the lining material.

You should get information directly from the CIPP manufacturer. Contact Insitufrom:

http://www.insituform.com/

 

[koshyeng]

BIMR,

Working pressure is atmospheric. This pipe is a 18" corrugated pipe. Waste stream has continuous temperature of 170 deg F and 5% acetone. I contacted insituform but they couldn't help us due to high service temperature.

any recommendations? What is your opinion on cementitious linings?

Appreciate your advice

 

[bimr]

How long is the pipe?

 

[koshyeng]

I am sorry.

Pipe is 300 feet. thrice in a year we will have about 10% MIBK coming in contact with pipe for 5 minutes.

 

[dicksewerrat]

Can this pipe be replaced by Pipe Bursting? And pull in a DIP? Do you need an 18 inch pipe to handle the flow? CMP is not a good pipe for flow capacity. A 14 inch DIP will carry about the same as your 18" CMP.

Richard A. Cornelius, P.E.

http://WWW.amlinereast.com

 

[bimr]

Another question is how deep is the pipe. If the pipe is not that deep, it may be less costly to replace the pipe.

I would recommend a chemical resistant FRP pipe such as the Bondstrand 5000.

 

[koshyeng]

This pipe is corrugated 18" HDPE pipe (about 3/4" thick) and 4' below ground level. Average flow rate is 500 gpm with a max of 1500 gpm during a storm event. I am not concerned about flow loss as it is way oversized.

BIMR,

Bursting this pipe will be expensive (unless I can find CIPP or spray in place options) as we have to burst other minor concrete structures surrounding this area. Also fire water lines run adjacent to these pipes.

Richard,

I feel DIP is not an option as waste water (DI water) at 170 deg F will be corrosive.

Appreciate your thoughts.

Regards,
Koshy

 

[bimr]

I would recommend pulling in a chemical resistant FRP pipe such as the Bondstrand 5000.

 

[koshyeng]

Thanks bimr.

I guess you are referring to slip lining and grout the annular spaces at the ends.

I didn't mention in my previous conversation that this 300' pipe (straight) has two lateral connections (8") without any trenches to access. If I go for slip lining I need to excavate at this intersection points for tie ins.

If I dont get right CIPP resin, I would go in this direction.

Appreciate your kind advice and time.

 

[dicksewerrat]

Call the resin suppliers. Alpha-Owens-Corning, Cook composites and Interplastic are three I know about.

Richard A. Cornelius, P.E.

http://WWW.amlinereast.com