Hi Mahesh. I agree with the ...

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Hi Mahesh. I agree with the responses already published and would add a couple of thoughts for you to consider. Firstly, early tests on the performance of PE included laying in permafrost (I believe in Canada by the oil and gas industry) and pressurising with fluid and some gas. The PE failed and we learnt how notch sensitive PE can be at low temperature. Secondly, I see that your source is at elevation 4000m and distribution area is at 2200m, i.e. 1800m (approx 180 bar) pressure. I assume that you will have some very good pressure management on this scheme, especially given my first item. Good luck.