Risk Assessment Course - EffShip · Design HAZID Stage 4 Detailed Design HAZOP Stage 3 Detailed...
18
Lloyd’s Register Marine 1 Use of low flash point fuels on ships Assessment of Risk Based Designs vs SPIRETH project • Effship seminar, 21 March 2013
Transcript of Risk Assessment Course - EffShip · Design HAZID Stage 4 Detailed Design HAZOP Stage 3 Detailed...
Lloyd’s Register Marine
1
Use of low flash point fuels on ships
Assessment of Risk Based Designs
vs
SPIRETH project
• Effship seminar, 21 March 2013
Lloyd’s Register Marine
2
SPIRETH PROJECT
Consortium members
• Haldor Topsoe
• Methanex
• ScandiNAOS
• SSPA
• Stena
• Wartsila
• Lloyds Register
Lloyd’s Register Marine
3
SPIRETH PROJECT
OBJECTIVE:
A full scale pilot project to test the alternative non-oil-based fuels methanol and
DME(OBATE) in order to contribute to finding an environmental friendly and
economically justified alternative for a sustainable maritime transport industry.
Lloyd’s Register Marine
4
Why do we need a risk assessment?
• Rules, regulations and guidelines are asking for risk assessments
to justify equivalent safety and demonstrate that the risks to ship and crew on board is
acceptable
Rules & Guidelines
• Novel or Unconventional designs Rules and Regulations for Classification of Ships, Part 7 Chapter 15, 1.7 Risk Management
• New or Altered designs MSC 285(86) Interim Guidelines on Safety For Natural Gas Fuelled Engine Installations in
Ships, 2.1.1 Risk analysis
Rules and Regulations for Classification of Natural Gas Fuelled Ships, 3.2 Safety and
reliability analysis
• Alternative Designs and Arrangements MSC Circ.1002 Guidelines on Alternative Design and Arrangements for Fire Safety,
3. Engineering analysis
MSC Circ.1212 Guidelines on Alternative Design and Arrangements for SOLAS
Chapters II-1 and III, 3. Engineering analysis
Lloyd’s Register Marine
5
Why is risk assessment helpful in designing low flash point fuelled
ships?
• Low flash point fuels present additional hazards compared with traditional
marine fuels
safety risk to those on-board is different to that from traditional fuels
there is a need to consider different and potentially additional
safeguards
there is a need to demonstrate appropriate safety
• Risk assessment is a tool to help
identify the need for additional safeguards
identify safeguards
demonstrate appropriate safety level
Lloyd’s Register Marine
6
LR’s Assessment of Risk Based Designs
YES
NO Stage 1 Scoping
Study
Stage 2 Conceptual
Design HAZID
Stage 4 Detailed
Design HAZOP
Stage 3 Detailed
Study(s)
STAR
T END
Acceptance criteria
satisfied
Single scalable assurance process to cover all rules, regulations and guidelines
Lloyd’s Register Marine
7
Stage 1 – Scoping Study
Lloyd’s Register Marine
8
Stage 2 – Conceptual Design HAZID
Lloyd’s Register Marine
9
Stage 2 – HAZID Example, Worksheet
Lloyd’s Register Marine
10
Stage 3 – Detailed Study(s) – Qualitative or Quantitative
Lloyd’s Register Marine
11
Stage 4 – Detailed Design HAZOP
Detailed Design Hazard and Operability Study (HAZOP)
Lloyd’s Register Marine
12
P&ID: LNG Fuel System Revision C, 15-Feb-12 Date: 10-Mar-12
Line Number: 01A
Line Description: Liquid Line from Tank to Evaporator
Guideword
/
Parameter
Causes Consequences Existing
Safeguards
Considerations /
Actions
Responsi
ble
No flow • Auto valve
stuck closed
• Manual valve
closed
• Cccc
Pressure build-up
in line
Line rupture
……..
……….
A. Flow meter with
reading at
control station
B. Bbbb
C. Cccc
D. Dddd
1. Flow meter with
audible alarm
2. Pressure
instrument with
alarm
3. Pre-op of check in
MV included in Ops
Manual
4. Planned
maintenance of
auto valve
John Smith
24-Mar-12
More Flow
Stage 4 – HAZOP Example, Worksheet
Lloyd’s Register Marine
13
Stena Scanrail
Two auxilary engines will be fuelled by DME
Lloyd’s Register Marine
14
SPIRETH project status
HAZID/HAZOP progress
• Two scoping study sessions - October and November 2011
• Conceptual Design HAZID study – March 2012
• HAZOP and detailed HAZID study – August 2012
• Two detailed HAZID workshops – January and February 2013
• Review of the Risk Register – March 2013
• 223 accident/casualty scenarios have been identified
• 124 Risk Register action points have been closed as meeting the agreed
acceptance criteria for allowable risk level
Lloyd’s Register Marine
15
SPIRETH project status
Status on board
• Majority of the hadware have been installed
• OBATE room containing DME process equipment has been built
• New engine room containing generator sets has been built
• DME piping, methanol bunker tank, ventilation, gas and fire detection, fire
protection, DME cooling system, new switchboard have been installed
• Testing of the Scania engines at DTI will commence soon
Lloyd’s Register Marine
16
Next steps
• Closing of the remaining action points from the risk register
• Completion of plan appraisal by the classification society
• Installation of the remaining equipment on board
• Commissioning of the complete installation
• Trials
Lloyd’s Register Marine
17
LNG Bunkering Summit, Rotterdam, February 2013
• “Using LNG as a bunker fuel releases unburned methane (methane slip) into
atmosphere through the exhaust. Methane is greenhouse gas that is about 21
times more potent then carbon dioxide when it comes to its impact on the
climate”
• ” Norway which operates 17 LNG fuelled ships plans to tighten its current
legislation on methane in order to lower a climate impact”
Lloyd’s Register Marine
18
Thank you
Zbigniew Kurowski
Lloyd’s Register EMEA
Country Manager for Sweden
T +46 31 775 48 24
M +46 708 17 00 00
w www.lr.org/marine
