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New Technical Approach to Classification of Anchor Handling and Diving Support Vessels. A. DEVADAS

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Presentation Transcript
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New Technical Approach to Classification of Anchor Handling and Diving Support Vessels

A. DEVADAS

RINA MUMBAI

slide2

Our services

E TIC

ConsultingEngineering

Classification

Project Management

Certification

Testing

Siting

Training

Inspection

Design

slide3

International

RINA Network

Over 150offices

53 countries

Level of RINA presence

slide4

O&G Services

Site Supervision

Engineering Consulting

Inspection

& Testing

Project Management

Asset Integrity Management

Design

Certification

slide5

General Market Overview

  • The offshore sector expansion in the last years is linked to:
    • world increasing demand of petroleum and natural gas
    • deep waters exploitations > increasing of drilling and production and storage units demand

* Clarkson research Service (Mar-13)

OIL & GAS sector trend

slide6

* Clarkson research Service (Mar-13)

AHTS and MPV Orderbook trend

slide7

Anchor Handling

Harsher environmental conditions

Increase of depth where the O&G industry is moving to

Increase of anchoring system weight and more critical operative conditions

Roller strength verification

Winch arrangement and control

Visibility from bridge deck

Hull connections verification

The AHTS stability become a parameter to keep strictly monitored

Technical Challenges

slide8

Anchor Handling

  • “Anchor Handling” is specifically designed for support to off-shore and wind farm units:
  • roller strength, winch arrangement and control, hull connections
  • visibility from bridge deck

RINA Approach

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Anchor Handling STAB

Additional notation showing the capability of tugs and supply vessels to handle anchors safely.

Main characteristics:

  • specific stability criteria for compliance with Norwegian Maritime Authority
  • Circular – Series V RSV 04-2008
  • based on extensive studies carried out by RINA on the effects of the forces transmitted by the anchor handling wire rope
  • this additional class notation covers also the equipment to be fitted on board, to allow the Master greater control of the ship stability

RINA Approach

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DIVING SUPPORT VESSELS

2 type of system, Surface (up to 50 m) and Saturation (from 50 to 500m) have different characteristics which have to be dealt with in different ways:

Maintaining position during diving operations

Stability during handling of diving equipment

Monitoring and electrical system to support the diving operations

Hull structural arrangements related to the diving system

This situation generate an high complexity of the system and relative certification scheme

Technical Challenges

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Diving Support

Vessels

  • The additional class notation DIVINGSUPPORT is assigned to ships equipped with a diving system certified by RINA.
  • maintaining position during diving operations
  • stability during handling of diving equipment
  • hull structural arrangements related to the diving system
  • electrical system to support the diving operations

RINA Approach

slide13

A new concept of classification is being developed on the basis of the requests of the Makers, Contractors and Associations (e.g. IMCA) of this sector

ensure the highest flexibility in the construction, exchange, replacements of the diving system components

keep the history of use and maintenance of each component

avoid that ‘unknown’ components are installed in the diving systems

Three levels of Class certificates

A component based certification approach

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main components can be combined in various arrangements, in order to constitute a primary system (Diving System)

  • the system can then be dismantled and re-combined, substituting or adding some components, for other campaigns
  • the three levels of certificates will grant the possibility to exchange/replace components (main or basic) on a primary system without affecting its Class Certificate.

RINA Approach

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each component (principal, main and basic) is provided with a proper certificate of Class, which follows the component during its life, including the lay up periods

  • this system guarantees the execution of the necessary periodical surveys, defined by the Manufacturer and approved by Class

RINA Approach

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SHIP NAME

XXXXXxx

RINA Rules for OSV

  • Stand alone classification rules for OSV
  • Expected issue date: July 2013
  • Portfolio of dedicated additional Class Notations and services to increase the Class value
  • Full information support through Leonardo INFO and EASY

RINA Aproach