GIEN Presentation Nov_2005

ABS Group Services do Brasil Ltda.ABS Group Services do Brasil Ltda.

GIEN

Marine Engineering ActivitiesFor the Petrobras Floating

Units

GIEN

Marine Engineering ActivitiesFor the Petrobras Floating

Units


VESSELS SUPPORTED BY THE CONTRACT

VESSELS SUPPORTED BY THE CONTRACT

ABS Classed Units:– 5 JACK-UPs– 8 SEMIs– 8 FPSO’s– 4 Charter Platforms

• 18 Units have process plant installed

• Three SEMIs are currently laid-up.

ABS Classed Units:– 5 JACK-UPs– 8 SEMIs– 8 FPSO’s– 4 Charter Platforms

• 18 Units have process plant installed

• Three SEMIs are currently laid-up.


GIEN main productsGIEN main products

• Engineering Analysis

• Emergency Services

• Support to Class Maintenance

• Management of Change

• Documentation Management

• Engineering Analysis

• Emergency Services

• Support to Class Maintenance

• Management of Change

• Documentation Management


Other productsOther products

• Engineering evaluation based on the numerical models ( Structural Linear and Non-linear, Thermal, Frequency Domain)

• Basic and Detailing Design• Production of Operation and Emergency

manuals• Training courses• Technical support in case of damages• Naval calculation as towing equipment

dimension, Mooring and others

• Engineering evaluation based on the numerical models ( Structural Linear and Non-linear, Thermal, Frequency Domain)

• Basic and Detailing Design• Production of Operation and Emergency

manuals• Training courses• Technical support in case of damages• Naval calculation as towing equipment

dimension, Mooring and others


Engineering AnalysisEngineering Analysis


Engineering AnalysisEngineering Analysis

• Numerical models for the following engineering analysis are developed based on the latest as-built information:

Motion AnalysisMooring AnalysisStability AnalysisStructural Analysis

• All developed models are ABS-Class approved and kept available for RAPID RESPONSE use.

• Numerical models for the following engineering analysis are developed based on the latest as-built information:

Motion AnalysisMooring AnalysisStability AnalysisStructural Analysis

• All developed models are ABS-Class approved and kept available for RAPID RESPONSE use.


Motion AnalysisMotion Analysis

• Motion Analysis are aplicable to all SEMIs and FPSOs.

• AQWA software is used.

• Motion Analysis are aplicable to all SEMIs and FPSOs.

• AQWA software is used.


HIDRODYNAMIC MODELSoftware AQWA

HIDRODYNAMIC MODELSoftware AQWA


Hidrodinamyc Model ResultsHidrodinamyc Model Results

•Pressure

•Added Mass / Inertia Mass

•Potencial Damping

•RAO´s


Mooring AnalysisMooring Analysis

• Models are also developed using AQWA hydrodynamic package.

• Applicable to FPSOs and SEMIs.• Line dynamics will be required by

Petrobras under specific request.• The Risers forces due current lines is

analized by software SITUA.

• Models are also developed using AQWA hydrodynamic package.

• Applicable to FPSOs and SEMIs.• Line dynamics will be required by

Petrobras under specific request.• The Risers forces due current lines is

analized by software SITUA.


Stability AnalysisStability Analysis

• Mesh Generator and SSTAB softwares are used for all the units, including SEMIs, FPSOs and JACK-UPs.

• These softwares were initialy developed by Petrobras and State University for emergency situations but is now available in all units for daily use.

• Validation of the SSTAB software is in progress by ABS Engineering in Rio.

• Mesh Generator and SSTAB softwares are used for all the units, including SEMIs, FPSOs and JACK-UPs.

• These softwares were initialy developed by Petrobras and State University for emergency situations but is now available in all units for daily use.

• Validation of the SSTAB software is in progress by ABS Engineering in Rio.


Stability Model by software “Mesh Generator”

Stability Model by software “Mesh Generator”


Stability Model by software “SSTAB”

Stability Model by software “SSTAB”


Structural AnalysisStructural Analysis

• Applicable to SEMIs, FPSOs and JACK-UPs

• SEMIs are modeled using FEMAP and NASTRAN software

• FPSOs uses ABS Safehull Phase A and B• JACK-Ups are modeled in software SACS

• Applicable to SEMIs, FPSOs and JACK-UPs

• SEMIs are modeled using FEMAP and NASTRAN software

• FPSOs uses ABS Safehull Phase A and B• JACK-Ups are modeled in software SACS


A ISOMETRIC VIEW OF STRUCTURAL GLOBAL MODEL

A ISOMETRIC VIEW OF STRUCTURAL GLOBAL MODEL


STRUCTURAL GLOBAL MODEL Femap / Nastran

STRUCTURAL GLOBAL MODEL Femap / Nastran


Special Structural AnalysisSpecial Structural Analysis

• Special Analysis including fracture mechanics and non-linear analysis can be executed to guarantee best results.

• An example of integration between field data and model testing are tha fractures found in the horizontal brace, around the K-joint of a Semi-Sub , which resulted in the development of a refined local structural model of the unit in order to investigate the fractures and possible repair options. This analysis saved the unit from dry-docking.

• Special Analysis including fracture mechanics and non-linear analysis can be executed to guarantee best results.

• An example of integration between field data and model testing are tha fractures found in the horizontal brace, around the K-joint of a Semi-Sub , which resulted in the development of a refined local structural model of the unit in order to investigate the fractures and possible repair options. This analysis saved the unit from dry-docking.


Interface of Loadings Femap / Nastran

Interface of Loadings Femap / Nastran


Structural Analysis - SAFEHULLStructural Analysis - SAFEHULL

X

YZ

4665.

4375.

4084.

3794.

3504.

3213.

2923.

2633.

2342.

2052.

1762.

1472.

1181.

890.9

600.5

310.2

19.91

V2

Output Set: Load Case 2(Total-Full)

Deformed(18.38): Transl Disp.

Criteria: VonMises Stress


EMERGENCY SERVICESEMERGENCY SERVICES


Emergency ServicesEmergency Services

• Objective of this module is to provide immediate engineering information in case of accident of any of the units included into the contract. RAPID RESPONSE.

• Specific numerical models were developed for this service using several computer programs.

• Objective of this module is to provide immediate engineering information in case of accident of any of the units included into the contract. RAPID RESPONSE.

• Specific numerical models were developed for this service using several computer programs.


Emergency Services (cont.)Emergency Services (cont.)

• Main focus is on the platform stability.

• FPSOs were modeled using HECSALV and SSTAB softwares.

• SEMIs and JACK-UPs used SSTAB.• All models were or are under ABS-

Class approval. SSTAB was specially validated by the Bureau.

• Main focus is on the platform stability.

• FPSOs were modeled using HECSALV and SSTAB softwares.

• SEMIs and JACK-UPs used SSTAB.• All models were or are under ABS-

Class approval. SSTAB was specially validated by the Bureau.


Emergency Services (cont.)Emergency Services (cont.)

Emergency Manuals were prepared for easy understanding of emergency procedures.

Loading conditions are informed by all Petrobras units and daily recorded for eventual use in an emergency situation.

Close coordination with a salvage company contracted by Petrobras and with office and equipment located in Macaé.

Periodical drills that goes from simple celular phone call to a complete damage simulation.

Emergency Manuals were prepared for easy understanding of emergency procedures.

Loading conditions are informed by all Petrobras units and daily recorded for eventual use in an emergency situation.

Close coordination with a salvage company contracted by Petrobras and with office and equipment located in Macaé.

Periodical drills that goes from simple celular phone call to a complete damage simulation.


New DrawingsNew Drawings

• The Kit Salvage is a set of drawings that concentrate all information deemed to be relevant in emergency situations of floating units. Intention is to save precious time when quick decisions become mandatory.

• Addresses mainly items of progressive flooding (vents, hatches, ventilators, watertight doors, sounding, sea chests, bottom plugs, bottom and side shell valves, etc.), mooring systems and emergency towing.

• The Kit Salvage is a set of drawings that concentrate all information deemed to be relevant in emergency situations of floating units. Intention is to save precious time when quick decisions become mandatory.

• Addresses mainly items of progressive flooding (vents, hatches, ventilators, watertight doors, sounding, sea chests, bottom plugs, bottom and side shell valves, etc.), mooring systems and emergency towing.


THE ENDTHE END

GIEN Presentation Nov_2005

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