ORYTECH (PTY) LTD
Paint, Corrosion, Material and Environmental Consulting & Testing Services
20 Years of Excellence
Contact us: +27 11 472 7123
Johannesburg, South Africa
Expert Witness - Darelle Janse van Rensburg
PhD in Corrosion at Wits University
Topic: Atmospheric Corrosion Profiling of South Africa and Selected Sites in the Greater Johannesburg Metropolitan Area.
Degrees Obtained :
B.Sc. Honours (1988)
PHD (Jan, 2019)
Diploma Obtained :
National Higher Teaching Diploma – Science and Biology (1987)
Certificates obtained :
Eskom - Communication about Performance (1991)
Eskom - Operation Awareness (Wilge) (1991)
SAPMA Paint Technology Course (Module 1) (1991)
South African Corrosion Institute - Back to Basics (1991)
Investment in Excellence (1991)
SAPMA Paint Technology Course (Module 3) (1992)
DRS - Legal Training for Appointed Responsible Persons (2005)
- Qualifier for the Masemanyane/Top 100 products awards – 1997 - Runner-up for the Eskom Manager’s Awards – 1997.
AFFILIATION TO PROFESSIONAL ORGANISATIONS:
- Fellow Member of the Corrosion Institute of Southern
Africa since 2002 and Full Member since 1993
- Member of the South African Quality Committee for
- Member of the Oil and Colour Chemists Association (OCCA)
- Member of the National Association of Corrosion Engineers (NACE)
- Member of the National Steering Committee for Paint
and Varnishes (SABS) (1997)
- 2nd Vice President of the Corrosion Institute of South
Africa (2005 and 2006)
- 1st Vice President of the Corrosion Institute of South
Africa (2007 to 2008)
- Judge (Adjudicator) for the Hot Dip Galvanizers Awards
(2005 to 2013), presented by the Hot Dip Galvanizers
Association of Southern Africa.
- Southeys (Sishen – Conveyors)
- Remkor – Sere Wind Farm
- Eskom Distribution (Carltonville Mini Sub-stations)
- Eskom Generation (Majuba Power Station clarifiers)
- Geo Nowers – Private house in East London
- Rio Tinto (QMM Madagascar plant)
- Sandblasting and Coatings (SC) (Mozambique) LTA (Total Terminal - Da Matola in Mozambique)
- Stoncor (Accuracy of batch certificates)
- Tubular Holdings (Kusile ACC ducting)
-Turnmill Proquip - Mozal plant ducting in Mozambique
- Zenodict (Kusile ACC bundles)
Performance testing of materials (laboratory and real-world), corrosion monitoring of environments, corrosion/coating failure investigations, expert witness, research (corrosion and coatings), plant assessments, corrosion protection specifications.
Eskom Distribution – Numerous projects
Eskom Enterprises – Several projects
Eskom Generation – Numerous projects related to Matla, Kriel, Lethabo, Matimba, Majuba, Komati, Grootvlei, Camden, Kendal, Duvha, Hendrina, Arnot, Tutuka, Koeberg, Palmiet, ACTOM – Wind farm mini-subs
BBS Projects – Wallpaper ink, etc.
Cottonwood Lane body Corporate – Cottonwood Lane Complex
Custom Linings – SNIM Mauritania rail wagons
Drakensberg and Port Rex power stations
Eskom Rosherville (TSI/ERID) – Numerous projects
Eskom Transmission – Numerous projects
Hair Health and Beauty – Container shops
Hatch – QMM Madagascar plant
ICE – ELB radiators
Inspect-a-home – Jackal Creek Golf Estate
M & S Corrosion Control – Natref tanks
Metpar - Aluminium zinc roof sheeting
Metpar – Powder coating
Powertech – SAPREF Mondi and Mobeni transformers
Quality services – Shiploader (Port Elizabeth Harbour)
Rod Rankine – Value City roof
SA Thala Roadmarking – Community Paints
SABMiller - Okahandja Brewery (Namibia)
Sandblasting and Coatings (D.R.C) SPRL
Tubular Holdings - Kusile ACC ducting
Turnmill Proquip – Mufulira Smelter (Zambia)
Zenodict - Kusile ACC bundles
QIT Madagascar Minerals (QMM)
PUBLICATIONS, PRESENTATIONS AND LECTURES:
2015 – Coatings for Africa Conference – "Recoatable epoxy coating" – The importance of thorough (impartial) testing of coatings for specific conditions/applications.
2015 – Coatings for Africa Conference – Atmospheric corrosion profiling of the Greater Johannesburg Metropolitan Area.
2014 – AfriCorr Conference – Presenter – Corrosion profiling of the Greater Johannesburg Metropolitan area – The start of a new corrosion map.
2010 - 2016 - Lecturer – Corrosion Engineering Course presented by the Corrosion Institute of Southern Africa (Chapters 2, 3, 4, and 6).
2011 - Presenter – Paint types, performance testing and specifications. Corrosion Protection and Maintenance Conference (10 and 11 November 2011) in Johannesburg.
2010 - Presenter – Accelerated versus natural exposure testing. Corrosion Investigation and Mitigation Conference 2007.
2008 - Guest Writer – Hot Dip Galvanizers Today.
2006 - Presenter and Publication - Solvent free coatings. 8th International Corrosion Conference – Johannesburg.
2006 - Presenter and Publication - Refurbishment of clarifiers – Quality control. 8th International Corrosion Conference – Johannesburg.
2004 - Co-author of Chapter 6 – Corrosion and corrosion protection. In: The fundamentals and practice of overhead line maintenance – 132kV and above. Published March 2004 by
Crown Publications cc. (An international recognized handbook prepared by a staff of experts from Eskom Holdings Ltd). ISBN NO. 0-620-30906-7.
2003 - Presenter and Publication- CVI corrosion and coating inspection techniques. 7th International Corrosion Conference – Johannesburg.
2003 - Presenter – Eskom’s 20-year paint exposure programme – 1974 to 2003. Technical presentation at the Corrosion Institute of Southern Africa.
2002 - Presenter – Protective coatings research. TTW Presentation.
1999 - Presenter and Publication - Organic Coatings and linings for demineralization and Feedwater/Condensate polishing plants. 14th International Corrosion Congress - 1999
(Cape Town, South Africa).
1998 to 2004 - Lecturer - Refurbishment of steel power line structures (Various Eskom workshops).
1998 - Presenter - The role of coatings in corrosion protection. Applitech ’98 Conference in Johannesburg. AMEU Affiliates. 1998 - Presenter - Aquacultural use of heated effluents
from coal-fired power stations. Kriel Power station.
1997 - Presenter and Publication - Corrosion protection of power generation plant – Future directions. EPRI/VGB/Eskom International conference on process water treatment and
power plant chemistry.
1997 - Presenter - Protective systems – Future directions from a user’s point of view. Corrosion Institute of Southern Africa – Coating Seminar.
1997 - Presenter - Aquacultural use of heated effluents from coal-fired power stations. Zoology Department (RAU).
1997 - Guest Lecturer - Corrosion protection of cooling water systems. Technicon Pretoria – 1997.
1993 to 1994 - Lecturer - Eskom Corrosion Workshop – Quality control inspections during the application of coatings.