The 2022 – fifth edition – Offshore Structures Reliability Conference (OSRC) will take place between 25-28 October 2022 at the TU Delft in the Netherlands. In line with the first edition in 2012, this event will be organized more as a workshop, on by invitation only basis, limited to some 60 professionals from the industry.
Focus will be extreme crests and wave kinematics on steel fixed structures with the objective to reach consensus on latest insights on observations, measurements, findings, risks, analysis methods and follow up across industry. By the end of the conference we aim to agree on a) the validity of the described risk and under what conditions and b) the way forward for the industry to deal with this risk.
The organizing committee: Adel Younan, Ramsay Fraser, Oddgeir Dalane, Andrea Mangiavacchi, Andre van der Stap
Background
The OSRC’16 paper by Jesper Tychen and the subsequent LOADS JIP caused quite a bit of upheaval in the offshore structures community
New, revised (higher order, area) extreme crest levels and associated significantly higher (breaking) wave kinematics and local loading were identified which could result in lower reliability for a certain combination of fixed platform types, water depths and metocean conditions than previously assumed. The work done on this has been extremely comprehensive: some six years of water basins tests, millions of Monte Carlo simulations and several research institutes involved. To understand, validate and manage the possible implications of the LOADS JIP, there have been multiple parallel sessions and initiatives.
Currently, there are believers, sceptics, non-believers, people sitting on the fence whilst the topic is simply too important and fundamental to offshore assets’ risk and reliability to let this fester. The organizing committee therefore decided to make this the prime topic of the OSRC’22. Since there is a lot of ground to cover it will be a four day event Tuesday 25 October – Friday 28th October ’22. The aim is by the end of the conference to agree on a) the validity of the described risk and under what conditions and b) the way forward for the industry to deal with this risk.
Please note that this event is by invitation only, and has limited attendance capacity. If you are interested in attending, use the feedback / questions button below to be put on the waiting list, and we will duly inform you of availability.
Reference material
Please scroll to the bottom to access the comprehensive set of downloadable reference material available as preread and preview.
Questions/FeedbackQuestions and answers will be collated and updated in the Q&A spreadsheet, which is periodically updated and available in the downloadable material section. The speakers however, will incorporate these identified questions during the event.
Please view the already submitted questions here.
Program
Day 1: Tuesday 25th October 2022 (8.00am-5.00pm) – chairs of the day: Oddgeir Dalane, Adel Younan
Opening: Conference goals
Item | Start | End | Duration | Topic | Presenting |
07:30 | 08:00 | 30min | Walk-in – wake up and smell the coffee | ||
1 | 08:00 | 08:30 | 30min | Introduction – Shared understanding of risks & assessment methods; agree common ground & way forward | Oddgeir Dalane |
Loading: Recap findings from research and test data
Item | Start | End | Duration | Topic | Presenting |
2 | 08:30 | 09:00 | 30min | Kick off – IOGP task force report out – additional failure mechanisms possible | Andre van der Stap |
3a | 09:00 | 10:00 | 60min | Summary of TotalEnergies AWARE project. AWARE approach to Crest height distributions, wave in Deck model, Tank testing – Part 1 | Jesper Tychsen Allan Zeeberg |
BREAK | 10:00 | 10:15 | 15min | BREAK when convenient | |
3b | 10:15 | 11:15 | 60min | Summary of TotalEnergies AWARE project. AWARE approach to Crest height distributions, wave in Deck model, Tank testing – Part 2 | Jesper Tychsen Allan Zeeberg |
4a | 11:15 | 12:15 | 60min | 2 hr Summary of LOADS. LOADS approach Crest height distributions, wave in Deck LMA model, Tank testing – Part 1 | Marios Christou |
LUNCH | 12:15 | 13:00 | 45min | LUNCH | |
4b | 13:00 | 14:00 | 60min | 2 hr Summary of LOADS. LOADS approach Crest height distributions, wave in Deck LMA model, Tank testing – Part 2 | Marios Christou |
5 | 14:00 | 15:00 | 60min | Summary of University of Texas work on GoM collapsed and damages compared to API predictions | Jinbo Chen Frank Puskar |
BREAK | 15:00 | 15:15 | 15min | BREAK when convenient | |
6 | 15:15 | 17:00 | 105min | Discussion | Adel Younan |
RECEPTION | 17:00 | 19:00 | 120min | OSRC Drinks – TU Delft |
Day 2: Wednesday 26th October 2022 (8.00-5.00pm) – chairs of the day: Ramsay Fraser, Jens-Kelly Rosenville
Structural response methods (Assessing Metocean extremes and Structural integrity)
Item | Start | End | Duration | Topic | Presenting |
07:30 | 08:00 | 30min | Walk-in – wake up and smell the coffee | ||
1 | 08:00 | 09:00 | 60min | Assessment methods and their acceptance criteria in draft ISO 19901-9, 2nd edition | Frank Puskar Mike Efthymiou Partha Dev |
2 | 09:00 | 10:00 | 60min | Risk & reliability approaches – reflections since OSRC 2016, performance criteria | Gerhard Ersdal |
BREAK | 10:00 | 10:15 | 15min | BREAK when convenient | |
3 | 10:15 | 12:15 | 120min | LOADS + hazard/Fragility curve thru explicit and approximate method | Richard Gibson |
LUNCH | 12:15 | 13:00 | 45min | LUNCH | |
4 | 13:00 | 15:00 | 120min | AWARE + contour method/code wrapper | Jesper Tychsen Allan Zeeberg |
BREAK | 15:00 | 15:15 | 15min | BREAK when convenient | |
5 | 15:15 | 17:00 | 105min | Discussion | Jens Kelly-Rosenville |
Close | 17:00 | 17:00 | Hardstop |
Day 3: Thursday 27th October 2022 (8.00-5.00pm) – chairs of the day: Andre, Andrea
Validation efforts
Item | Start | End | Duration | Topic | Presenting |
07:30 | 08:00 | 30min | Walk-in – wake up and smell the coffee | ||
1 | 08:00 | 09:00 | 60min | Energy Institute Metocean network Road map | Ramsay Fraser |
2a | 09:00 | 10:00 | 60min | Applying LOADS methodology and outcome: UK example – Part 1 | Graham Feld |
BREAK | 10:00 | 10:15 | 15min | BREAK when convenient | |
2b | 10:15 | 11:15 | 60min | Applying LOADS methodology and outcome: UK example – Part 2 | Graham Feld |
3 | 11:15 | 12:15 | 60min | Norwegian review of field measurements | Gunnar Lian |
LUNCH | 12:15 | 13:00 | 45min | LUNCH | |
4 | 13:00 | 14:00 | 60min | Historical in-field performance versus LOADS predictions | Mike Efthymiou Richard Gibson |
5 | 14:00 | 15:00 | 60min | Comparing LOADS and AWARE results for various platforms – planned EI studies and test problem | Jesper Tychsen |
BREAK | 15:00 | 15:15 | 15min | BREAK when convenient | |
6 | 15:15 | 17:00 | 105min | Discussion | Andrea Mangiavacchi |
Close | 17:00 | 17:00 | Hardstop | ||
DINNER | 19:00 | 23:00 | Restaurant de Verbeelding / the Imagination Delft |
Day 4: Friday 28th October 2022 (8am – 4pm) – chairs of the day: Andrea, David
Way forward
Item | Start | End | Duration | Topic | Presenting |
07:30 | 08:00 | 30min | Walk-in – wake up and smell the coffee | ||
1 | 08:00 | 10:00 | 120min | Structural integrity assessment toolkit from the draft ISO 19901-9, 2nd edition | Partha Dev Frank Puskar Mike Efthymiou |
BREAK | 10:00 | 10:15 | 15min | BREAK when convenient | |
2 | 10:15 | 11:15 | 60min | Possible integrity assessment during design, ISO 19902 | Jean-Marc Cholley |
3a | 11:15 | 11:45 | 30min | Road map – Near Shore test Centre /Digital Ocean Lab validation of extremes JIP proposal | Hans Hanson |
3b | 11:45 | 12:15 | 30min | Road map – Expectations from the regulators | Alex Stacey Gerhard Ersdal |
LUNCH | 12:15 | 13:00 | 45min | LUNCH | |
3c | 13:00 | 13:30 | 30min | Road map – Tools SAM, ASSESS, CEVA | Graham Feld Ramsay Fraser |
3d | 13:30 | 14:00 | 30min | Road map – (conflicting time lines and expectations: standards, tools, regulators; IOGP governance) | Oddgeir Dalane |
BREAK | 14:00 | 14:15 | 15min | BREAK when convenient | |
4 | 14:15 | 16:00 | 15min | Discussion | Dave Petruska |
Close | 16:00 | 16:00 | Hardstop |
Location
Technical University Delft,
Building 37, Body & Mind room
Mekelweg 8
2628 CD Delft
The Netherlands
(Please refer to the map at the bottom of the page)
Hotels
Please see below a list of hotels in the vicinity.
- Hotel Arsenaal – Uniek Historisch Hotel – Hotel Arsenaal Delft • by WestCord
- Hotel Royal Bridges – Hotel Royal Bridges, Delft
- Hotel de Koophandel – Hotel De Koophandel Delft
- Hotel Hampshire – Delft Centre – Home – Hampshire Hotel Delft Centre
- Casa Julia – Homepage | Fine Hotels Casa Julia
- Best Western Museumhotel – Home | Best Western Museumhotels Delft – Delft
- Johannes Vermeer – Hotel Johannes Vermeer | One of the four Centrum Hotels in Delft (hotelvermeer.nl)
- Westcord Hotel – Hotel Delft | WestCord Hotels | Official Website
- Hotel de Plantaan – Hotel de Plataan Delft – Unique hotel in the center of Delft
- The Student Hotel (not just for students) – Delft – The Student Hotel
For more information you can also view the map with hotels on Booking.com: Hotels in Delft
Downloadable Reference material for pre-read
#1 The LOADS JIP commenced in Dec 2015 and competed in 2022.
The scope of work comprised the following tasks, which largely correspond to the steps required to determine the long-term distribution of wave loading:
- The description of the long-term metocean environment.
- The description of the short-term metocean environment.
- The calculation of wave kinematics and wave-loading.
- The calculation of the long-term distribution of wave-loading and structural reliability.
- Final reporting and worked examples
The LOADS JIP final reports for tasks A to E are available at https://www.dropbox.com/sh/7yw4hz7yaq84acq/AAALLLEHH6YqvZBDcSNOHIURa?dl=0
#2 UK HSE initiated a study in May 2018 to develop guidance on the assessment of structural failure from extreme environmental loading on fixed offshore platforms.
Recent advances in both metocean statistics, and the physical understanding of extreme wave events, have demonstrated that commonly applied methods of assessment can be non-conservative and that wave impact on the deck needs to be accounted for.
The study reports are available at HSE Offshore: Extreme Environmental Loading of Fixed Offshore Structures
#3 The OSRC 2020 pre-meeting videos on the following topics are available here:
#4 Slides of the OSRC 2020 webinars for session 1 and session 2 are available here:
- Session 1 (4th Nov 2020) – recent developments in extreme metocean load
- Session 2 (5th Nov 2020) – performance-based design for metocean hazard
#5 Reliability calculations for GoM jackets using Bayesian updating from data on collapsed and non-damaged platforms exposed to hurricanes were first published at OTC 1996 – Development of Pile Foundation Bias Factors Using Observed Behavior of Platforms During Hurricane Andrew | OTC Offshore Technology Conference | OnePetro The most recent Bayesian updating study for GoM platforms was performed by Dr Jinbo Chen and published in his 2016 PhD thesis – https://repositories.lib.utexas.edu/bitstream/handle/2152/41661/CHEN-DISSERTATION-2016.pdf?sequence=1
#6 The OSRC 2016 papers on extreme metocean loading and reliability analysis for platforms in the Tyra field are available here