FPSO Requirements

FPSO’s & DNV

EOCBR 514 – Newbuildings and Conversions Marcelo Spotorno Rio de Janeiro, 16.07.2009

© Det Norske Veritas AS. All rights reserved Slide 2 28 September 2011

More than 140 years of managing risk

Det Norske Veritas (DNV) was established in 1864 in Norway

The main scope of work was to identify, assess and manage risk – initially for maritime insurance companies


300 offices in 100 countries

Head office Local offices


Our people – a vital resource

People are the core of DNV 97 nationalities 9000 employees


FPSO – Market share

ABS35 %

DNV40 %

LR12 %

BV4 %

CCS1 %

Rina1 %

Vietnam1 %

Unknown6 %

Source:- Mobile Production systems of the World, 7th Edition, 2007/2008, Clarkson Research Services Limited- Floating Production Systems - assessment of the outlook for FPSO vessels, production semis, TLPs and Spars, November 2007, International Maritime Associates Inc.


Petrojarl I

the world’s first FPSO built for harsh environment(1986)


First FPSO GoM

BW Yùum K’ak’Náab


Chinook Cascade

First FPSO for US GoM

Cascade Chinook / First FPSO for US GoM


FPSOs/FSOs Newbuildings & Conversions

BP Skarv-Idun Korea-Samsumg Newbuilding

BW Pioneer - Cascade/Chinook Singapore Conversion

Nexus 01 Korea-Samsumg Newbuilding

Nexus 02 Korea-Samsumg Newbuilding

P-58 - Baleia Azul Singapore Conversion

Sevan 300 No. 04 China-Hantong Newbuilding

Sevan 300 No. 05 China-Hantong Newbuilding

Ichtys FPSO - Newbuilding

FSO Rita Dubai Conversion

Dynamic Producer Singapore Conversion

Knock Dee FSO Dubai Conversion

Deep Producer Singapore Conversion


”DNV classed units” around the world

North Sea:

FPSO: 18 Canada:

FPSO: 1

Gulf of Mexico:

FPSO: 2

Brazil:

FPSO: 3

West Africa:

FPSO: 12

North Africa:

FPSO: 2

Asia and Australia:

FPSO: 15


FPSO’s – DNV fleet in Brazil

SSP300 - Sevan Piranema

Petrojarl Cidade de Rio das Ostras

BW Cidade de São Vicente


DNV Offshore Standards


Benign Waters

DNV OS-C-102 - Structural Design of Offshore Ships - World-wide operation - Benign waters - Environments at which the required to hull girder capacity

calculated according to the LRFD method is less than the minimum section modulus according to the ‘Main Class Requirements’.


Benign Waters

Alternative design procedures - Alternative 1 - Ship Rules - The hull scantlings are based on the “main class

requirements”.No direct calculations of wave bending moments and shear forces are required.

- Alternative 2 - LRFD method - The hull is designed according to the principles given in Ch.1. The midship section modulus may be less than the ”main class requirements”. When design Alternative 2, LRFD method, is applied, the minimum midship section modulus according to the ”main class requirements” may be reduced by maximum 25%.


P-58 - Nauticus Construction

Default

Innerstructure

Outershell

Thickness map

Material map


You get an over-view from colour display and printed numbers.

Gives you access to the dimensions and steel grades of plates, stiffeners and girders

By clicking the structural parts you get more details

Information – dimensions and steel grades


Maintenance – Steel renewal / weight

Marking up all plates and/or stiffeners within a 3D zone by defining and extruding a polygon

Plates and stiffeners can be marked up independently by using separate zones


Maintenance – Coating Area Calculations

Marking up all structures for complete or part of the compartment

Marking up single structures for partial coating: top, one side (gray on aft side means not coated)


Maintenance – Docking specifications

Planning and cost control prior/during a docking of a vessel.

Specification or for verification purposes of the figures given by the ship repair yard.


Maintenance – Emergency Repairs

Facilitates the documentation of damage:

- Location - Extent - Type of structure

No need for long and complex descriptions.

Enables overview and control the expenses.


The Nauticus Coating Monitoring Tool takes advantage of 3D technology to visualise the coating status and calculate re-coating areas. The tool also supports a structured recording of coating inspection results referring to pre-defined cells/bays of the ballast tanks. Finally, it assists you in preparing the re-coating specification and estimates the costs.

When tool is used one has stop to take a risk of unpredicted situations in respect to mintenance or failure.

Monitoring - Coating Monitoring Tool


Thickness measurement support

The Nauticus UTM Tool improves planning, execution and evaluation of ultrasonic thickness measurements.

Monitoring – UTM

This improves UTM process: shorter time, improved quality and communication, input to maintenance strategy: better control and lower cost


0%

5%

10%

15%

20%

25%

1983 1988 1993 1998 2003 2008 2013

Years

Thic

knes

s D

imin

utio

n t dim

t sub

t min

Set of UTM readings from previous years

Trend Curve

The curve shows tendency of steel diminution within the years and can be used for prognosis

Management – Maintenance Strategy

Coating Condition Status


Training – Naming of Structure


Inspection of lower hopper knuckle especially in way of trv. web frames

Inspection of upper hopper knuckle especially in way of trv. web frames

“Risk Based Inspection” with Focus on ”Critical Areas”

Training – Areas of Attention


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Technology

FPSO Requirements