Monday, August 3, 2015

SENER engineering finished repairing and modernizing the icebreaker Almirante Irizar


July 30, 2015 (Google Translation) - SENER has completed the draft comprehensive engineering repair and modernize the icebreaker to the Argentina Navy, Almirante Irizar, after the fire he suffered in an Antarctic campaign.
In 2009 the Argentina Navy and the shipyard Tandanor SACYF convened SENER ENGINEERING AND SYSTEMS ARGENTINA, to present a comprehensive engineering project for the modernization and repair the icebreaker ARA Almirante Irizar, with reference to the experience and background in the industry SENER not only as a developer naval engineering, but also as the creator of CAD / CAM FORAN system used in 150 shipyards and engineering offices around the world.
After several meetings between the project team Tandanor and SENER, it was agreed technical scope for the development of basic and detail engineering from a draft STX (WARTSILA) and dated 20/10/2009 He kicked off the development of this project, that for technical characteristics and scope of the work and the vessel concerned, we can say that is one of the most important works of naval engineering those made in the country over the last 25 years.
As a result of the loss suffered by the ship, 75% of structures inside the hull, deck and superstructure aft of the rating (frame 84) were severely or totally affected. Pipes, accessories and auxiliary equipment, ventilation ducts, electrical conduits, wiring and switchboards located aft of the frame 84 were lost or severely damaged. There were a total loss of main diesel generators (MDG) and auxiliary (ADG), as well as primary and secondary electrical panels and emergency generator (MG) and emergency services board.
Meanwhile, the auxiliary propulsion electric propulsion motor (MEP) and suffered minor smoke damage and high temperatures, while the outer hull and wing tanks aft of the frame 84 and empowerment and structures forward of the it suffered no damage.

Chart showing damage
In order to have a thorough understanding of the magnitude of the project, take reference that this type of work are much more complex than building a new ship. This work has not been a simple repair. It is an overhaul of parts not affected by the incident and normal tasks in any start dry, but is also a new building and further modernization of services and equipment.
Original structures must be coupled with new structures, like the service binding existing pipes with new or refurbished parts. This feature required more than 1,500 hours of on-board surveys by a team of technicians and professionals in the area, for the further development of a 3D model.

SENER engineers within the ship

Given the requirement of the Owner to be a qualified vessel (DNV's Class Notation 1A1 Specially Ice Strengthened, Naval Support, HELDK SHF, E0, DG-P, LFL), one of the most important challenges for SENER was framing the ship from a regulatory point of view (IMO and Classification Society), as in 1978 when it was built, the regulation was far from that now applies to a vessel of this type, since our Almirante Irizar is not a simple icebreaker, a vessel transport of bulk liquid cargoes with LFP, ship general and refrigerated cargo, scientific research vessel, vessel for passenger and ship able to operate as a hospital ship and logistical support, which also has a helmet, specially reinforced, suitable to navigate in Antarctic waters and ice breaking.
It also has instrumentation and automation needed to navigate with machine unattended. It has also prepared a modern flight deck and a new system of refueling JP1 for helicopters operating in the vessel.
The main topics of this modernization were:

  • Extension of the authorization to accommodate 313 people (crew and passengers scientific personnel) and restoration of the original spaces enabling the vessel
  • Increase in the areas of scientific use on board (total available 400 m2
  • Increased storage capacity (GOA liquid cargo (650 m3)
  • Increase in storage capacity (> 930 Ton dry cargo, refrigerated cargo 120 m3; 1,000 drums, 500 gas pipes; 1200 m3 loads more)
  • Classification class brands and certified according to requirements Det Norske Veritas (July 2009 rules)
  • Adapt the ship to IMO requirements (MARPOL - SOLAS), the Antarctic Treaty and the Madrid Protocol, in force on the date of the repair.
  • Development of engineering and structural analysis of the ship (FEM) for scrapping tasks afloat condition (with deformation analysis by using strain gages

All this within the limits for the economic parameters of the project and the skills and build strategy Shipyard.
Engineering project results:

  • HH 130,000 engineering and project control
  • Using V603.0 FORAN for the project
  • Renovation and modeling 760 Tons of steel structures (decks, bulkheads, stiffeners)
  • 42 blocks
  • Modeling of 4,000 Tons of steel structure modeling for reference only enlistment
  • Modeling equipment and auxiliary structures and 4,000 m of pipes only reference modeling enlistment
  • 12,000 m of pipes and restarted modeled
  •  8,000 spools of pipes for construction
  • 2,500 m of patterned electrical conduits and renewed
  • 2,250 m of ventilation ducts and air conditioning modeled and renovated
  • 700 teams modeled and built 100 bases and auxiliary structures modeled and constructed
  • 67 technical specifications drawn up and made 181 approvals supply
  • 1950 engineering documents issued in final review

This result was obtained with the joint work of three divisions of the specialty shipbuilding company, located in Tres Cantos (Madrid), Valencia and Buenos Aires, with a total capacity of 40 people at the peak of the project, 23 of which They were Argentines, working on a database of FORAN located in Tres Cantos and replicated databases in Valencia and Buenos Aires, which marks a milestone in the use of FORAN with this methodology, as it is the first project worldwide that It runs with this mode.
In the Madrid division, Naval Architecture tasks were developed; Structural Engineering and Structural Analysis FEM. In Valencia division, engineering tasks Enlistment developed; HVAC; Structural Integrity Fire; Media and saving appliances; Electricity and Automation; Enable. In the Buenos Aires division they carried out the tasks of Project Management; Planning; Documentation Control; Cost control and the development of Detail Engineering Structures and Enlistment and Technical Assistance.
All this work was done in conjunction with Tandanor as construction shipyard, so if we add to the tasks mentioned those made by its technical staff in dike and technical office, we are facing one of the most important works in the history of the industry naval our country. It is necessary to also mention the team of our Navy, both staff of the project team of DGMN (Directorate General Naval Material) as the affected vessel along the work staff.
SENER, which has already completed the engineering, continues to provide timely technical support and assistance in this project.
At project completion engineering, Norberto Fiorentino, SENER Argentina said "For my part only remains recognition to all who participated in the project, both my team, the team of our customer and the staff of the shipowner, who They gave their effort and dedication to the successful completion of the same."

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