BHARAT OMAN REFINERIES LIMITED

VT LONDHE JUNE 2007–AUGUST 2009

General

Raw Water Intake System is a weir across Betwa river with an intake well arrangement for lifting the river water so that the same can be pumped by the clients themselves to the raw water ponds of the Bharat Oman Refineries Limited located about 8 km away. The BORL had with them the Engineers India Limited (EIL) as their consultants.The weir is 260m long with training walls on both the flanks. The weir was originally divided in 13 blocks of 20m each.

Achievements

I being on the contractor side requested them to divide the full length into 14 blocks with 2 end blocks of 10m each and the rest 12 blocks of 20m each which they some agreed to.The proposed site of the weir across Betwa river was located at such a location where there was already an existing sand quarry and that too just D/S of the their existing pumping arrangement.The L-section of the river shew that the bed levels are rising towards thedownstream.Further downstream there existed higher bed levels. Further the 2 training walls on either side were proposed to be splayed on the U/S side to avery short length of just 2m each only. Hence I requested them to shift the weir site downstream but they did not agree.

Special Works

For the approval of the foundation of the weir they had their own Geologist but at many times I had ro advise their geologist regarding the geology and the way of approving the foundations.Similar situations prevailed at the time of the foundations of the Intake Well and the 5 piers. Similar was the position for the layouts of the weir, drainage arrangements below the energy dissipation arrangements and the casting of the bridge slabs. Finally somehow we could complete the whole work with all these odds.