skandi arctic application of innovations for a step change · 2019. 4. 15. · • in 2008, prs was...

Skandi Arctic Application of innovations for a step change

Pascal GROSJEAN - TECHNIP

JAH 2011, Paris 12/10/2011

1Application of innovation - Skandi Arctic

Table of contents

1. Introduction

2. History

3. Skandi Arctic

4. Personnel Diving Equipment

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5. Pipeline Repair System

6. Conclusion

Application of innovation - Skandi Arctic

1. Introduction


Introduction

This short presentation will endeavour to show how Technip has and is

taking major steps forward with regards to operational safety and

efficiency relating to subsea activities off and with the Skandi Arctic

through the application of innovation.

The approach has been global and covers the 3 fundamental aspects of

the subsea construction activities with divers in saturation :

- the vessel diving equipment

- the personal diving equipment

- the subsea construction equipment

In order to understand the need for this innovation it is important to set

the scene and understand what the industry was operating with and why

there is and was a need to change.


2. History


History

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OSV Stephaniturm was a state of the art DSV in the late 1970’s

In 1981 it carried out the greatest deep sea salvage operations in history - HMS

Edinburgh gold recovery works - which was only possible due to the application

of an innovation which allowed the divers gas to be reclaimed. This was the

equipment first commercial ‘trial’


History


3. Skandi Arctic

Application of innovation - Skandi Arctic 9

Skandi Arctic


Skandi Arctic – main details

Accommodation for 140Main Crane 400te harbour,

300te offshore

Two CRP Azimuths each 3.0MW Two Retractable Azimuths each 1.5MW Two CRP Azimuths each 3.0MW

One Centre Prop 4.0MW

1700 m2 deck with under-deck

storage and deckhouse lay-down

area (2400m2 + in total)

350m Dive System, 24 men, 2 x moon-

pools, 2 x Hyperbaric Lifeboats

Two Retractable Azimuths each 1.5MW

Two Tunnel Thrusters each 1.9 MW

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Skandi Arctic – Diving System


The Skandi Arctic is Technip’s premier Construction/Diving Support Vessel.

She supports the following innovative systems :

• State of the art diving system that complies with the latest standards with

regards to technical and operational functionality

• First system to utilise PLC control of the total diving system, which has led to

the exclusion of pipe-work and traditional gauges from the controls rooms and

increased monitoring and safety features.

Skandi Arctic – Diving System

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increased monitoring and safety features.

• New concept in launch and recovery for the diving bells (all electric), providing

a level of redundancy never seen before.

• Port and starboard hyperbaric lifeboats

• The forward crane on the aft deck can be located to port or starboard as

projects require


Traditional Style Saturation Control room

• Manual control valves

• Analogue gauges

• Manual log recording

• Multiple and diverse alarms

The weaknesses of the analogue technology

• Multiple and diverse alarms

• Piping intensive

• Manning intensive

• Large space demand

• Single Control Facility

• Ergonomically compromised


• Physically smaller, ergonomically designed control desks

• System can constrain operators to follow pre-defined safe operating procedures

• Extensive monitoring and data logging capabilities

The strengths of PLC applied technology

Skandi Arctic Saturation Control room

• Extensive monitoring and data logging capabilities

• Prioritised alarming

• Information overload avoided by structured information presentation

• Automated safety systems less prone to human error (e.g. pressure and oxygen control)


Skandi Arctic Saturation Control screen


Skandi Arctic – Diving System LARS

Key features of the new Launch and Recovery (LARS) approach

• Increased Submersible Decompression Chamber (diving bell) in-water weight to achieve 4mHs operability (>5T)

• Integrated bell stage and clump weight

• Electric triple winch lift system to share the increased all up weight (>21T in air)

• Back Up control from Moonpool location with direct operation of drives


• Back Up control from Moonpool location with direct operation of drives without PLC influence

• Dual independent motors per winch

• Dynamic motor braking

• Dual electro-hydraulic brakes

• Independent drives to each motor

Conventional LARS

Conventional system with one main lift wire and twin guide wires


Skandi Arctic - 3 winch and wire approach

The three wires are attached to the diving bell and have equal capacity


Skandi Arctic – Diving chambers


Standard bailout – 1st generation


SLS (Secondary Life Support) – 2nd generation


Personnel Diving Equipment (PDE) – 3rd generation

The PDE is the next generation of personnel

diving equipment.

It brings the following benefits:-

• Real time monitoring of diver critical

functions

• Greatly increased ‘bailout’ contingency

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• Greatly increased ‘bailout’ contingency

breathing supply

• Increased operational efficiency coupled

with operational cost savings

• Spin off application for some of the core

technology – sensors and communications

• Enhanced space in the diving bell through

use of rebreather, thus reducing the excursion

umbilical components from 6 to 1(combined

gas and electrical unit)


5. Pipeline Repair System (PRS)


PRS overview

The pipeline repair system (PRS), based at Haugesund, Norway is managed by Technip

Norway on behalf of Statoil since January 2007.

Originally developed to deal with emergency repairs, PRS is now regularly deployed

for the routine maintenance of underwater pipelines and for extending the existing

network via hot taps or tie-ins.

In case of detection of a large leakage, the system is ready to be mobilized in 48 hours

in order for the repair itself to start after approx 21 days estimated for the inspection

and decommissioning of the line.

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and decommissioning of the line.

Demand for the system has grown as working depths have increased, so much so that

divers can no longer be used at these depths. In these cases, repairs can only be

carried out by remotely controlled equipment.

Since the system was first used in 1987, the length of pipeline covered by PRS has

expanded from 948km to more than 13,000 km today.


PRS overview

The PRS is operated from the Skandi Arctic on behalf of the Technip/Statoil frame

contract, which includes all the major field operators in Norway:-

•PRS has successfully completed more than 80 hyperbaric welded tie-ins

• In 2008, PRS was responsible for the world's first remotely-operated hot tap on

Tampen Link.

• In 2009, the world's deepest hot tap operation was carried out by PRS on the Ormen

Lange field.

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Lange field.

• PRS can now operate on pipes up to 48 inches in diameter with the first hyperbaric

tie-in welds on Nord Stream being completed this summer.


NORD STREAM PROJECT


Skandi Arctic deck for Nord Stream Project


PRS overview


6. Conclusion


Conclusion

During the course of this presentation, we have reviewed the most recent

innovations utilized (or soon to be) in the deepwater subsea intervention

activities of Technip.

We have demonstrated how those innovations contribute to the

operational safety, the well-beeing and the efficiency of our teams

Those objectives are the core of our approach.


Those objectives are the core of our approach.

Deepwater application developments continue and Technip is at the

forefront of this development.

Thank you for your attention - Any Questions ?


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