Page 44: of Offshore Engineer Magazine (Mar/Apr 2013)

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EPIC – Platforms

MLQ and GDU – GSU module installation in progress. MNP platform during Level 1 integration.

projects, which had signifcant joint venture with Sapura Crest of The MNP platform required overhang. Malaysia. The installation of the a large number of splices and The execution of the schedule heaviest MNP jacket was smooth modules (10 modules and three concluded when the MNP-MNF2 and without problem. Phase two cantilever frames) to be integrated bridge was successfully loaded-out installation was started by DB-101, offshore. Fifty percent of the cabling on 29 February 2012, and sailed- which installed MNW-NF bridge, was to be done offshore and could out safely from Hazira channel MNW crane, MLQ deck, MNF2 not be started before installation on 7 March 2012. Forty-fve barge jacket, and OSV mooring buoy. completion. Cables had to run movements were carried out in One challenge during installation from MNW platform to MNP and 3.5 months and used almost every was integration of Level 1 of MNP MLQ platforms. Dry run and fnal available tidal slot. Jetty utilization deck, comprising fve splices and commissioning occurred in parallel. was above 85%, setting a record. three cantilever supports. Precision Four barges worked simultaneously During this work, many new work and fne tolerances were for installation and hook-up in the records were set. The heaviest required for successful installation same complex.

module load-out in India went to and integration. The MLQ hook-up had a large

MNP South East deck at The structural integration of GRE piping and plumbing scope. 4521 tonnes. A new record for the modules into a single structure Hook-up work was started in largest number of axles in one load was required at each stage and parallel with installation. MNP out was 200 and was shared by signifcant time was taken in this platform hook-up work was started

MNP South East deck and MNP integration. Integration of CSF soon after installation of South

South West deck. While MNP East frames with South East and South East and South West deck. It was deck created the record for longest West modules took 12 days, after necessary to work in parallel with axle line in India with 44 axles and which East, North and West decks the installation. Additional safety 70m in length. were installed. It took 11 days for measures and precautions were integration of MNP platform’s Level taken during the overlapping

Installation 1. However, after integration, the period. Simultaneous operations

After surmounting challenges next fve modules, three bridges, meetings were held regularly. of fabrication and load-out, two cranes, and two fare stacks Due to the anchor patterns of installation of the modules was were installed. Installation was the installation barge, the hook-up another large task. A total of 250 completed on 20 April 2012, and barge could not be connected to installation barge days were used Oleg Strashnov sailed back after a MNP platform using a gangway. The for offshore installation. A total of successful campaign. accommodation barge was anchored 72 vessels were mobilized during 2.5nm away from the platform from the entire marine spread. Both Hook-up and commissioning which passengers were ferried daily phase one and phase two campaigns After installation was completed, in crew boats. Software identifed took more than 120 days each. this left 25 days for hook-up before the spools and tracked the work. Phase one installation was onset of the monsoon season and Software also helped managers performed by L&T’s own demobilization of the hook-up make quick decisions without installation group, formed in barges. referring to the engineering center.

OE | March 2013 oedigital.com 46 oe_EPIC_rev2.indd 46 27/02/2013 11:51