OBSERVATORY SERVICING AND MAINTENANCEInspection Maintenance Repair. ... potential of standard...

ESONET NoE-All regions Workshop-Barcelonia, 5-7 september 2007

1

lfrem

erOBSERVATORY SERVICING AND

MAINTENANCE

How to deploy and maintain a network ofobservatories around Europe?

We don’t built what we cannot maintain!

Jean-François DROGOU

IFREMER

Steve ETCHEMENDY

M.B.A.R.I


2

lfrem

erObservatory Servicing & maintenance

Underwater intervention coverSite surveysModule lifting/deployment (ROV operation or assistance)Umbilicals/cables laying and underwater connectionsInspection/Maintenance works

• General inspection, data retrieving&reconfiguration, adding or replacingsensor, replacing energy pack, marine fouling cleaning,….etc..

Need

Naval means

Underwater intervention systems (ROVs…)

Techniques and procedures

We will demonstrate that technologies and tools for construction, servicingand repair exist, and are reliable, at an affordable cost


3

lfrem

erIntervention hardware

Observation ROVWork and Heavy Work class vehicles

& Tooling (Specific Toolskid)

Specialized systems

AUV in futurefor survey only in offshoreEvolution to hybrid systems-subsea based..


4

lfrem

erCommercial aspects

Work ROV operatorsCosts:

Obs ROV: from 10 to 500 k€Work ROV: from 3 to 5 M€

Day rates:From 7 to 10 k€/day for Work ROV + crewFrom 70 to 100 k€/day“Subsea services” on day rates

450Total Systems

50Others

20Technip

25Canyon

30Stolt Offshore (now Acergy)

35Fugro

60Sonsub (Saipem)

80Subsea 7

150Oceaneering International, Inc.


5

lfrem

erStrategy & General guidelines

Use ships of opportunity and non highly specializedsurface vessels for deployment, when possible Use locally available vessels: limit mob/demob & transitRegroup several missions for a same ship & sameintervention systemFavorise long term programmed maintenanceOperational procedures trials prior to going at sea

MOU to facilitate time exchanges of ROVs between European institutes for operations on the observatories that they will operate.

Demonstrations during field trials, using existing infrastructures (link WP3 & WP4)


6

lfrem

erQuestions?

Determination of the ROV/Ship charge for servicing

NEPTUNE: 7 nodes/40 days per yearPertinence of a dedicated Ship+ROV versus contracting existing operators in industry and in science bodies


7

lfrem

erTasks within WP2

Review about existing standardisation & systems engineering schemes , (ISO,API….offshore GPs)Review interfaces:

For task c subsea infrastructure interfaces and existing underwaterintervention methods (Antares, SN1,MARS,NEPTUNE Canada…)

Criteria for using standards within demonstration missions

Standards – RPsBenefits: added safety – reduced engineering – interchangeability

Deliverables:criteria for design of deep sea observatories taking into account subsea intervention(input to “case studies” WP3)D-8 : Give recommendations regarding standards to be used for demonstrations missions D-27 : Specification report for demonstration actions – subseaintervention


8

lfrem

er

Standards and recommended practices for underwater intervention and structures interfaces in the Offshore industry

Possible benefits of offshore standards to thescientific community


9

lfrem

erUnderwater Intervention Missions

Surveys (ROV, AUV, Hull mounted sonars)Drilling supportConstruction support

Lifting assistancePipe Touch Down Point monitoringUnderwater connectionsPost surveysPrecomissionning assistance

ProductionInspectionMaintenanceRepair


10

lfrem

erOffshore Standards and RPs

API ISODNVNORSOKIMCACompany Specifications


11

lfrem

erAmerican Petroleum Institute (API)

API standards “promote the use of safe, interchangeable equipment andoperations through the use of proven, sound engineering practices as well as help reduce regulatory compliance costs, and in ,conjunction with API’s QualityPrograms, many of these standards form the basis of API certification programs”.

Series 17: Subsea Production SystemsREP 17H – Remotely Operated Vehicle (ROV) Interfaces on Subsea Production Systems

• RP 17H gives functional requirements and guidelines for ROV interfaces on subsea production systems. It is applicable to both the selection and use of ROV interfaces on subseaproduction equipment, and provides guidance on design as well as the operational requirements for maximising thepotential of standard equipment and design principles.


12

lfrem

er

International Organization for Standardisation (ISO)

75 Petroleum and related technologies75.180 « Equipment petroleum and natural gasindustries »

• ISO 13628:Part 1: General requirements and recommendationsPart 2: Flexible pipe systems for subsea and marine applications Part 3: Through flowline (TFL) systemsPart 4: Subsea wellhead and tree equipmentPart 5: Subsea umbilicalsPart 6: Subsea production control systemsPart 8: Remotely Operated Vehicle (ROV) interfaces on subsea

production systemsPart 9: Remotely Operated Tool (ROT) intervention systems


13

lfrem

erDet Norske Veritas (DNV)

More oriented towards inspection, testing andcertification processes

Less potential for OFM designers

Recommended Practise N° DNV-RP-A203 “Qualification procedures for new technology”:Recommended Practise N° DNV-RP-H101 “”RiskManagement in Marine and Subsea Operations”:

DNV recommends a basic three-step process for management of risks within marine and subsea


14

lfrem

erNORSOK

Based on existing international standards withsome additional constraints

U-102 Remotely Operated Vehicles ServicesROV classification and good guidelines to subcontractROV services


15

lfrem

er

IMCA(International Marine Contractors Association)

Best practice guidance, in the areas of safety, training and personnel competence

IMCA R 002 to R 013Field of ROV services and contracting


16

lfrem

erPossible use of Offshore standards

MetallicMaterials- Selection of raw materials

- Manufacturing control- Traceability- Inspection- Shipping marking and packaging

CompositeMaterials

Underwater Concrete

ProtectiveCoatings

1. MATERIALS

Structural components- Material selection

- Welding, bonding, bolting- Quality Control- Documentation- Factory Acceptance Tests- Shipping Marking and Packaging

PressureVessels

Cables andConnectors

PowerModules

2. MANUFACTURING

HydraulicModules

Lifting devices- Design criteria- Design loads- Safety factors- Corrosion protection- Maintainability- Documentation

PressureVessels

Mechanicalprotections

ROVinterfaces

3. MECHANICAL DESIGN

Foundations

SensorsInterfaces

CommunicationProtocols

Data formats Data storage

4. POWER AND CONTROL SYSTEM

OperatorInterface

Site surveys- Meteocan data- Spread mob/demob procedures- Work procedures- Safety plan- Data management and QC- Reporting

Module lifting

Cables laying

InspectionMaintenance

6. CONSTRUCTION AND MAINTENANCE

StructuralComponents

EquipmentSelection

Storage andTraceability

InterfacesManagement

DocumentationReporting

5. SYSTEM FABRICATION

FAT/SIT

Scheduling

Direct use Direct use with small modifs Partial use Little use Useless


17

lfrem

erStructures interfaces

API 17H and ISO 13628-8 define mechanical andelectro/hydraulic standards on ROV panels

Grasping handlesDocking pointsDual down line interventionValves handlesTorque tool receptaclesInterfaces design


18

lfrem

erElectrical/communication interfaces

Not really standardised and mainly rely on eachmanufacturer design and usual practise

Umbilical connections: No standards govern the design and construction of associated connectors (« Underwatermateable connectors » - from 2 electric pins to multiple electro-optical), even if some specifications giveguidelines for manufacturing and testing connectors

4 pin wet mateable connector with ROV friendly handle (ODI source)


19

lfrem

erUnderwater Intervention

No standards or RPs covering globally ROV intervention, but

ISO 13628-8 for accessAPI 17E & ISO 13628-5 for subsea cablesinstallationISO 13628-1 for proper maintenance planning and tooling designNORSOK U-102 for ROV services


20

lfrem

erConclusions / Recommendations

Follow when possible ISO and API for structure interfacesStart a standardisation initiative in terms of sensors interfaces, electrical power distribution and cable designConsider offshore RPs (NORSOK) for underwater intervention, but in parrallel, build up a data base related to ROV intervention

Present scientific intervention on existing observatoriesVehicles performances, tooling and sensors usage feed-back, break down statistics, operational hazards, crew manning, maintenance tricks, …etc

Operational procedures trials prior to going at seaUse existing infrastructure for training and demonstration

OBSERVATORY SERVICING AND MAINTENANCEInspection Maintenance Repair. ... potential of standard...

Documents

Transcript of OBSERVATORY SERVICING AND MAINTENANCEInspection Maintenance Repair. ... potential of standard...