Engineering concern, Goltens recently won a contract to install two exhaust gas scrubbers on a cruise ship.
The ship was fitted with four GMT/Sulzer 16ZAV40S and two GMT/Sulzer 12ZAV40S diesel electric generating sets.
The scope of the project was to perform all evaluation, planning, design and installation for two 10 plus meter long exhaust gas scrubber towers on diesel generators Nos 1 and 2 and to complete the entire operation before the completion of the vessel’s drydock period in the US.
Goltens’ technical management attended the vessel to evaluate the project, determine space requirements and logistical obstacles. In addition, making use of the Goltens Green Technology process, 3D laser scanning of the spaces was undertaken to facilitate system modelling.
Once 3D modelling was complete, Goltens was able to complete the detailed design and map out a definitive process, manning plan and timeline for the removal of the existing exhaust silencers and the installation of the exhaust gas scrubbers within the time window required.
Based upon the detailed design, Goltens was able to prefabricate foundation structures in its workshop and ship the prefabricated material to the vessel in time for her arrival in the drydock.
Goltens mobilised a 10 man riding crew to the ship to undertake demolition and prepare the engine casing for the rigging and installation operations. Despite a three-day delay in beginning dismantling work caused by operational demands for the engines, all preparatory work was completed during a nine day underway period prior to docking.
Once in drydock, Goltens mobilised more than 40 technicians (100% US labour) and technical managers to the site to complete the project within the 10-day drydocking period.
After an initial 24-hour delay, due to severe weather, the team removed all eight exhaust silencers and installed the scrubber tower sections within 22 hours, before the crane was struck, due to another storm.
Goltens operated a two shift system with a minimum of two supervisors per shift to ensure that quality controls and safety standards were adhered to throughout the project.
Despite significant delays caused by severe weather conditions at the beginning of the drydocking, Goltens was able to keep the schedule working around the clock to complete the installation.
Goltens worked very closely with the vessel’s technical project management to overcome schedule delays and as a result, the work was completed a day ahead of schedule and the vessel was able to leave the drydock as planned.
As a result of the successful completion of the job, Goltens was awarded and completed a similar job for a sister vessel a few months later.
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