MTS GUIDELINES & IMPACT ON DP VESSELS - Riviera · PDF file · 2015-09-16MTS GUIDELINES & IMPACT ON DP VESSELS Asian Dynamic Positioning Conference 10 th September 2015, Singapore

MTS GUIDELINES & IMPACT ON DP VESSELS

Asian DynamicPositioning Conference10th September 2015, Singapore

By: Joey Fisher

• Enhanced vessel capability through a fault tolerant, fault resistant DP vessel

• DP vessel design philosophy guidelines

• Meeting class requirements and obtaining operational uptime

• How implementation during design phase lowers the cost of a ‘Fit-For-Purpose’ DP vessel

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� Based in Washington DC

� Founded in 1963

� A professional society that serves an international community ocean engineers,

technologists, policy-makers and educators.

� To promote awareness understanding, advancement and application of marine technology.

� Sponsors a number of technology conferences including the Annual MTS DP Conference in

Houston.

� Has a designated DP Technical Committee

The DP Committee prepare guidance documents for DP vessel design and for the safe and

effective conduct and management of DP operations.

THE MARINE TECHNOLOGY SOCIETY (MTS)



� DP VESSEL DESIGN PHILOSOPHY GUIDELINES

� DP OPERATIONS GUIDANCE (DP MODUs, DP Project / Construction Vessels & DP Logistics

Vessels)

� GUIDANCE FOR PROFESSIONAL DEVELOPMENT OF PERSONNEL

ENGAGED IN DP OPERATIONS

� TECHNICAL AND OPERATIONAL GUIDANCE (TECHOP) DOCUMENTS

� TECHOP_ODP

� TECHOP_GEN

The documents complement existing class rules and IMCA DP guidance documents.

THE MARINE TECHNOLOGY SOCIETY (MTS) –

GUIDANCE DOCUMENTS



Document No. Document Title

TECHOP_GEN_00 TECHOP Guidance

TECHOP_GEN_01 Power Plant Common Cause Failures

TECHOP_GEN_02 White Paper on Continuous Trials for DP MODUs (draft)

TECHOP_ODP_00_(O) High Level Philosophy

TECHOP_ODP_01_(D) FMEA Testing

TECHOP_ODP_02_(D) Blackout Recovery

TECHOP_ODP_03_(D) Evaluation of Protection Systems

TECHOP_ODP_04_(D) FMEA Gap Analysis

TECHOP_ODP_05_(O) DP Operations Manual

TECHOP_ODP_06_(D) DGNSS Position Reference Sensors

TECHOP_ODP_07_(D) Software Testing

TECHOP_ODP_08_(O) Annual DP Trials and Gap Analysis

TECHOP_ODP_09_(D) A Method for Proving the Fault Ride-Through Capability of DP Vessels with HV Power Plant

TECHOP_ODP_10_(D) External Interfaces (draft)

TECHOP_ODP_11 (D) Cross Connections

TECHOP_ODP_12_(O) Defining Critical Operations Requiring Selection of Critical Activity Mode

THE MARINE TECHNOLOGY SOCIETY (MTS) –

TECHOPS



THE IMPACT ON DP VESSELS – DESIGN & OPERATIONS

DP VESSEL OWNERS / OPERATORS / CHARTERERS

� Vessel new build specifications

� Specifications for DP FMEA documents and DP Operations Manuals

� Used as a benchmark during pre-hire assessment of DP vessels

� FMEA Gap Analysis Tool (TECHOP_ODP_04)

� DP Operations Manual Gap Analysis Tool (TECHOP_ODP_05)

� Operational Activity Planning (CAMO, ASOG / WSOG & TAM)

IMCA

� References to MTS guidelines;

� IMCA M220 - Operational Activity Planning (CAMO, ASOG / WSOG & TAM)

� IMCA M103 - The Design and Operation of Dynamically Positioned Vessels (Rev 02

DRAFT)

� MTS Guidelines also make reference a number of IMCA guidance documents



MARINE SAFETY FORUM

� Reference has been made to MTS guidelines in Safety Flashes

USCG

� Various Safety Alerts – 2013; “Where ride-though capability is an essential part of the DP

redundancy concept it should be proven by live short circuit and ground fault testing as per

Section 9.2.5 of the MTS DP Vessel Design Philosophy Guidelines”.

� MTS DP Committee are technical advisors to the USCG for their discussion with IMO

regarding the revision of IMO/MSC Circular 645.

� Notice of Proposed Rulemaking on Requirements for MODUs and Other Vessels

Conducting Outer Continental Shelf Activities with Dynamic Positioning Systems.




CLASS

• DNV-RP-E306

This Recommended Practice (RP) is based on the DP (Dynamic Positioning) Design Philosophy

Guidelines of the Marine Technology Society (MTS) DP Technical Committee.

• DNV-RP-E307

This Recommended Practice (RP) is based on the DP Operation guidance of the Marine Technology

Society (MTS) DP Technical Committee.

• ABS Guide for Dynamic Positioning Systems (The ABS DP Rules!)

The DP FMEA is to be performed based on this Guide, IMCA M 166, IMCA M 178, IEC 60812, “DP

Vessel Design Philosophy Guidelines” by MTS, Annex 4 of IMO High Speed Craft Code or equivalents.




• Redundancy Concept

The means by which the Worst Case Failure

Design Intent is assured.

• Redundant Group

All components and systems that are subject

to a relevant single failure.

UNDERSTANDING THE “REDUNDANCY CONCEPT”


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ABS: Redundancy is to be

based on systems which are

immediately available for

use, namely on running

machinery. In general, full

stop and restart of the

system do not comply.

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ABS: The engine fuel supply system is to follow the overall split concept with required redundancy,

including redundancy of service tanks, supply and return lines, filters, pumps, quick closing valves

and their controls.

THE DIVISION OF SYSTEMS INTO REDUNDANT GROUPS SHOULD BE MAINTAINED THROUGHOUT

THE DESIGN.


WHAT IS THE POST FAILURE DP CAPABILITY?



THRUSTER AUTO-CHANGEOVER




THRUSTER DUAL FEED




THRUSTER DUAL FEED




THRUSTER DUAL FEED




THREE SPLIT




THREE SPLIT – FUEL OIL SYSTEM

THE DIVISION OF SYSTEMS INTO REDUNDANT GROUPS SHOULD BE MAINTAINED THROUGHOUT THE

DESIGN.



THREE SPLIT – SW COOLING SYSTEM


DESIGN.



THREE SPLIT – FW COOLING SYSTEM


DESIGN.



THREE SPLIT – 24V DC SYSTEM


DESIGN.



CROSS CONNECTIONS

AVOID CROSSING THE BOUNDARIES OF REDUNDANT GROUPS!



AVOID CROSS CONNECTIONS



THREE SPLIT – CLOSED BUS TIES




MAKE IT FAULT TOLERANT.



DESIGN IT FOR OPEN BUS / INDEPENDENCE / AUTONOMY




� Follow class rules but remember these are the ‘minimum’ technical standards /

requirements

� Follow MTS guidelines and IMCA guidelines

� Define the Redundancy Concept and the Worst Case Failure Design Intent early

� When doing so, make sure it is technically correct and compliant – not a wish!

� Design in ‘Non-Critical Redundancy’ to improve the reliability and availability of systems

� Define the Redundancy Design Intent, the Separation Design Intent (DP 3) and the

Technical System Configurations

ENSURING ENHANCED DP CAPABILITY



DP VESSEL DESIGN PHILOSOPHY DOCUMENT OR

CONCEPTUAL DESIGN REPORT

� Can help to ensure that vessel owners, ship designers, shipyards and FMEA consultants

are aware of the requirements during all stages of a new build DP vessel

ADVANTAGES;

� Ensure compliance in all systems that are related to DP system – piping systems, electrical

power distribution, the correct type of position reference systems, etc.

� Avoid design changes during the building phase

� Enable the shipyard to accurately quote and eliminate the costs associated with re-design,

re-work and delays during construction phase or when the vessel is in operation.

Quote: “The DP Conceptual Design Report was produced during the negotiating phase for this

DSV and despite adding one (smaller) generator and reconfiguring the electrical SLD, it

lowered the cost because the shipyard understood exactly what they were quoting for”.



FINALLY

IT’S ALL ABOUT

STATION KEEPING

SAFETY!

Documents

MTS GUIDELINES & IMPACT ON DP VESSELS - Riviera · PDF file · 2015-09-16MTS GUIDELINES & IMPACT ON DP VESSELS Asian Dynamic Positioning Conference 10 th September 2015, Singapore