Project Deliverable D50 Report on Best Practices Workshop - Ifremer

More documents

Recommendations

Info

Names Surnames Institutions Emails Nicolas Nowald KDM-UNIHB-MARUM nnowald@marum.de Volker Ratmeyer KDM-UNIHB-MARUM ratmeyer@marum.de Marck Smit NIOZ msmit@nioz.nl The panel session devoted to material choice included: - Objective - General overview D. Choqueuse (IFREMER) Environment Material in deep sea Protection Deep Offshore experience - NIOZ field experiences M. Smit (NIOZ) - Cathodic protection D.Festy (Corrosion Institute) & D. Leflour (IFREMER) Certification Modeling - Polymers and Composites P. Davies (IFREMER) Polymer in seawater Case studies Buoyancy Materials D. Choqueuse (IFREMER) - Cables, Connectors, Moorings, Glass… 4.4.3.4 Debriefing 20 year plus Material Choice. A final text was issued; it proposes to establish guidelines. LONG-TERM DEPLOYMENT: MATERIALS FOR SUBSEA OBSERVATORIES In the definition of subsea observatories, from the scientific vision to cost estimates, long-term sustainable operation is a key issue and probably constitutes a limitation. Any improvement in ageing of materials and components merits further study. Based on the experience gained mainly in the offshore industry [1] where materials are exposed in deep sea (up to 2000 m) for long time (up to 25 years), in the framework of ESONET/EMSO program guideline for the choice and selection of materials for long-term, deep-sea exposure was proposed. These guidelines, based on existing literature [2], feedback from previous experiences and the Best Practices Workshop 2 white paper of this session are under preparation. The following points are addressed: • Description of the deep-sea environment highlighting the influence of parameters behind acting on the degradation process (pressure, oxygen concentration, fouling, etc.) • Review of materials used in service deep sea applications: Metallic material Non metallic materials • Associated protection <strong>Deliverable</strong> #50 - update October 2010 40
Cathodic protection, including the choice and design of cathodic protection systems Paints and coatings • Assembly • Sub-components: moorings, landers, connectors, junction boxes, pressure houses, buoyancy, etc. • Guide for performance evaluation It must be mentioned that experience feedback is of primary importance for the use of most of the materials. Attention must be paid on the assembly of dissimilar material where galvanic corrosion could be initiated. Design of structure, choice of material and associated protection method should be performed by skilled people in order to avoid reinventing solutions already evaluated. In general, the long-term behavior of the material is not or is only weakly affected by pressure. While pressure loading must be taken into account in terms of mechanical loading on hulls for instance, the intrinsic properties of the material are generally not affected by pressure. Materials subject to creep such as some thermoplastics can be easily replaced with materials having more suitable characteristics. In order to avoid most of the problems of corrosion the use of cathodic protection for metallic structure is strongly recommended and that will limit the use of “exotic” and “expensive” materials, which could be proposed. For polymer and composite materials [3] good knowledge of behavior in water has to be considered in order to limit the risk of long-term detrimental degradation processes (hydrolysis, etc.). However, it must be noted that degradation of such material is generally thermally activated and except in really specific areas (black smokers, etc.), temperature is low enough (around 4°C) to avoid initiation of degradation processes. An approach based on accelerated test using time-temperature equivalence can be used to predict long-term performance of polymeric materials [4][5] however good knowledge of degradation phenomena is needed in order to guarantee pertinence of the accelerated test. For specific materials as syntactic foam, synthetic fiber for mooring cable, knowledge of long-term behavior has already been addressed through specific program related to offshore industry [6][7]. [1] M. Roche, Protection contre la corrosion des ouvrages maritimes pétroliers (1978) [2] Materials for marine systems and structures, editor D F. Hasson (1988) [3] D. Choqueuse, P. Davies, Durabilité des polymères et composites pour application sous marine, Revue des composites et des matériaux avancés, (2002) [4] D. Choqueuse, P. Davies, Ageing of composites in underwater applications, in Ageing of composites, Woodhead publishing in materials, editor R. Martin, (2008) [5] P. Davies, G. Evrard, Accelerated ageing of polyurethanes for marine applications - Polymer Degradation and Stability, Volume 92, Issue 8, August 2007, Pages 1455-1464 [6] F. Grosjean, N. Bouchonneau, D. Choqueuse, V. Sauvant, Comprehensive analyses of syntactic foam behaviour in deepwater environment – Journal of materials science 2009; 44 (6) 1462-1468 [7] G. Desrombise, L Van Scoors, P. Davies, L. Dussud, Durability of aramid ropes in a marine environment, OMAE 2008- 57199 <strong>Deliverable</strong> #50 - update October 2010 41
Page 1 and 2: Project contract n
Page 3 and 4: CONTENT 1 Executive summary .......
Page 5 and 6: 1 Executive summary The main goal o
Page 7 and 8: 4 Sessions 4.1 General indications
Page 9 and 10: 4.2.2 Acoustic sensors 4.2.2.1 Intr
Page 11 and 12: In the marine environment a diversi
Page 13 and 14: 4.3.1.3 Debriefing - A document was
Page 15 and 16: defined by ESONET deliverables D11
Page 17 and 18: The generic sensor should be availa
Page 19 and 20: The oxygen sensor in the generic sp
Page 21 and 22: Common topics on time series analys
Page 23 and 24: Ecological communities Author: H. R
Page 25 and 26: Pan & tilt system, to find the righ
Page 27 and 28: References : http://www.listentothe
Page 29 and 30: Zaugg, S., van der Schaar, M., Hou
Page 31 and 32: e: connection e represents the conn
Page 33 and 34: Case Study In order to test the Ref
Page 35 and 36: operate it in a safe and productive
Page 37 and 38: White Paper for the Panel 3-3 - 20
Page 39: springs for release has shown its p
Page 43 and 44: Thursday 8 October Time Topic 09:00
Page 45 and 46: Friday 9 October Time Topic 08:15 S
Page 47 and 48: Generic session scheme Presentation
Page 49 and 50: o Existing or newly developed quali
Page 51 and 52: Working group G3 - Standardisation
Page 53 and 54: Objectives: The first meeting of th
Page 55 and 56: Firstname Lastname Institution Coun
Page 57 and 58: Annex C Slides from Anders Tendberg
Page 59 and 60: Criteria for Observatory Sensors Fi
Page 61 and 62: Possible sensor technology for obse
Page 63 and 64: http://www.act-us.info/ EURO ACT, l
Page 65 and 66: Calibration methods Temp Pr Current
Page 67 and 68: Which problems remain to be solved
Page 69 and 70: Tests : • Fluorescence sensors :
Page 71 and 72: Local Protection by electrochlorina
Page 73 and 74: WG 1 GENERIC INSTRUMENTATION PANEL
Page 75 and 76: Physical and Technological constrai
Page 77 and 78: Annex D EARTH SEA SCIENCE IN KM3Net
Page 79 and 80: I - Manage data from the above. (Sp
Page 81 and 82: Figure 2: Secondary junction box of
Page 83 and 84: Docking unit is also the structural
Page 85 and 86: Infrastructure / Standalone observa
Page 87 and 88: Infrastructure / Standalone observa
Page 89 and 90: Annex F1: processing of ELISA data
Page 91 and 92:
Figure 2: currents measured around
Page 93 and 94:
depth (m) Due to inertial currents
Page 95 and 96:
Figure 6: Rebuilt Time series of sa
Page 97 and 98:
ANNEXE F2 - M. FAUZI's presentation
Page 99 and 100:
40 km submarine cable -2475m depth
Page 101 and 102:
CTD ADCP Interdisciplinary Instrume
Page 103 and 104:
Deliverable #50 -
Page 105 and 106:
Shore Station : M. Pacha 40km Elect
Page 107 and 108:
Antares Database and Web site proje
Page 109 and 110:
Deliverables / Pla
Page 111 and 112:
Istituto Nazionale di Geofisica e V
Page 113 and 114:
Just in time data conversion Web GU
Page 115 and 116:
Deliverable #50 -
Page 117 and 118:
Let’s see it live SeaFloor test s
Page 119 and 120:
Ecological Communities •Species c
Page 121 and 122:
Spatio-Temporal Correlations • Ti
Page 123 and 124:
Deliverable #50 -
Page 125 and 126:
E. minutissima Ec. rostrata Density
Page 127 and 128:
10-12 months for the RAD (r = 0.38;
Page 129 and 130:
Total density (TAD) (ind. grab -1 )
Page 131 and 132:
Total density (TA D)(ind. grab -1 )
Page 133 and 134:
El Niño Southern Oscillation, Nort
Page 135 and 136:
Fishery Sciences and Technology Dep
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
ANNEX F6 - DEBRIEFING : Del
Page 145 and 146:
Introduction • From the first Bes
Page 147 and 148:
Time-Series Analysis Considerations
Page 149 and 150:
• CTD F, Bio, etc…. Time series
Page 151 and 152:
Deliverable #50 -
Page 153 and 154:
CTD Some examples of time series
Page 155 and 156:
Development of an Automated Protoco
Page 157 and 158:
Data management collaboration with
show all

Project Deliverable D50 Report on Best Practices Workshop - Ifremer

Create successful ePaper yourself

Delete template?

Save as template?