Work on Dahej second jetty begins September

Vol 15, PW 4 (25 Aug 11) Midstream & Downstream

Offshore work to construct the much-anticipated second jetty at Petronet-LNG’s Dahej LNG terminal in Gujarat is likely to begin next month.

PETROWATCH learns the Gujarat Maritime Board gave permission to begin offshore work on the second Dahej jetty in July, but said work should begin after September 15 only when the monsoon season is expected to end in Gujarat. Petronet-LNG awarded the EPC contract for the second Dahej jetty to Mumbai-based AFCONS this January.

AFCONS has so far completed the ‘basic engineering design’ to construct the jetty’s ‘topside’ and has begun basic engineering design for ‘marine’ construction work. With a second jetty ready to receive tankers by September 2013, Petronet-LNG will be in a position to increase terminal capacity by 5m t/y.

Once completed, the jetty will be 3-metres wide with a 2.5-km ‘trestle’ extending into the sea, and terminating in a ‘head’ in deeper waters. The second jetty will be located about 500-metres south of the first jetty in line with global safety standards governing the acceptable safe distance between LNG jetties.

For the most part, the second jetty will be identical to the first. “But the second jetty will have a different LNG tanker handling design,” says a Petronet-LNG source, “so it can handle large Q-Flex LNG tankers (which can carry up to 220,000-cubic metres of LNG) and even larger Q-Max tankers (which can carry up to 266,000-cubic metres).

” The jetty will also have five ‘mooring dolphins’; four ‘breasting dolphins’; ‘unloading platforms’; a ‘gangway tower’; and ‘walkway bridges’ connecting the unloading platforms. At the jetty head there will be three LNG ‘unloading arms’, a ‘vapour return arm’, two ‘unloading pipelines’ and a ‘vapour return pipeline’.

Our company source foresees no problems with having Q-Flex and Q-Max LNG tankers berth at Dahej as it is an ‘open port’ with a ‘natural draft’ of over 12-metres.