Gb2013 frank goodwin_ international zinc association

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Gb2013 frank goodwin_ international zinc association

  1. 1. A galvanização e os investimentos em portos by Frank Goodwin William Marques International Zinc Association
  2. 2. Shipyards in Brazil January 2012 •47 Shipyards •11 New yards under construction •59,000 workers directly employed •6.2 Million DWT order book •18 Offshore Oil Platforms under construction
  3. 3. The most important ports • • • • • • • • • Porto Porto Porto Porto Porto Porto Porto Porto Porto de de de de de de de de de Santos – SP Vitória – ES Paranaguá – PR Rio Grande – RS Rio de Janeiro – RJ Itajaí – SC São Sebastião – SP Itaqui – MA Aratu – BA Port of Santos
  4. 4. Brazilian Shipyards DWT under construction
  5. 5. Brazilian Shipyards Today’s Order Book and New Orders as of January 2012
  6. 6. BrasFELS - Angra dos Reis (RJ) specializes in offshore production platforms. Atlantico Sul Shipyard – Suape (PE) Large crude carriers, offshore platforms and drill ships
  7. 7. Port Facilities
  8. 8. Portos e Navios
  9. 9. Port of Vancouver, BC Delta Port- Vancouver’s largest container terminal
  10. 10. Delta Port handles the largest container ships afloat and features dualhoist gantry cranes – a first in the Americas along with super postpanamax cranes, 3 berths and advanced computer systems.
  11. 11. Delta Port – galvanized structures
  12. 12. Delta Port – galvanized structures
  13. 13. Dredge “Ned Edwards” Port of New Orleans, USA Galvanizing used for handrails, stairs, walkways, and platforms
  14. 14. Dredge “Ned Edwards” Port of New Orleans, USA
  15. 15. Arbon Marina Lake Constance, Switzerland
  16. 16. Arbon Marina
  17. 17. Arbon Marina
  18. 18. Bottighofen marina Lake Constance
  19. 19. Bottighofen Marina
  20. 20. Bottighofen Marina
  21. 21. Galvanized boat trailers at Bottighofen Marina
  22. 22. Bottighofen marina
  23. 23. Duplex Coating • The protection of steel by a layer of zinc which is overcoated by a nonmetallic coating • The purpose is to provide additional corrosion resistance, easy visibility, camouflage or a pleasing aesthetic appearance • Corrosion resistance of a properly applied duplex coating can provide corrosion protection outside the pH or Cl- range normally acceptable for galvanizing.
  24. 24. Why does a Duplex System Work? • Zinc products of Corrosion far less than RED Rust • Blistering (corrosion creep) of paint therefore far less than when it is direct onto steel • Zinc products of corrosion tend to seal the pours in the top paint coating • Results in the “Synergistic effect”, which is: Duplex Service Life = Factor x (Zn Life + Paint Life) e.g. Service Life = 1.5 x (9 years + 5 years) = 21 years to 5% rust
  25. 25. Synergistic factors • Industrial/Marine 1.8 to 2.0 • Sea water (immersion) 1.5 to 1.6 • Non-aggressive climate 2.0 to 2.7 • Paint is not there to protect the zinc, but zinc is there to support the paint when it starts to fail!
  26. 26. Atmospheric corrosive environments classified in terms of ISO 9223
  27. 27. Galvanized & Painted Weed Bars in a Lock Location: Delfzijl, The Netherlands After 17 years, still no sign of rust
  28. 28. Specify type and thickness of paint in accordance with ISO 12944:1998 Part 5 Table A.9
  29. 29. S te p 3 * S e le c t a n IS O 1 2 9 4 4 c om plia nt s ys te m E N IS O 1 2 9 4 4 -5 : 1 9 9 8 T a b le A 9 : P a in t s y s te m s c o rro s iv ity c a te g o rie s C 2 to C 5 -I a n d C 5 -M S u b s tra te : H o t-d ip -g a lv a n iz e d s te e l¹) Th e p a in t s ys te m s g ive n in th e fo llo w in g ta b le a re o n ly e xa m p le s ,. O th e r p a in t s ys te m s h a vin g th e s a m e p e rfo rm a n c e a re p o s s ib le . If th e s e e xa m p le s a re u s e d , it s h a ll b e e n s u re d th a t th e p a in t s ys te m s c h o s e n co m p ly w ith th e in d ic a te d d u ra b ility w h e n e xe c u tio n o f th e p a in t w o P a int S yst em No P r i mi ng c o a t ( s ) B ind er 5) N umb er o f co at s T o p c o a t ( s ) ) i nc l ud i ng i nt e r me d i a t e c o a t ( s ) ) NDFT - S9 .0 1 3) B ind er 5) - N umb er o f co at s NDFT 3) T o t al N D F T 3 ) µm µm 1 µm 80 1 80 12 0 C2 L 1 40 1 80 2 S9 .0 3 1 80 1 80 2 1 80 2 16 0 3 S9 .0 5 - - 1 80 1 40 1 80 2 12 0 S9 .0 7 1 80 1 80 2 1 80 2 16 0 3 - - 1 80 1 40 1 80 2 L M C 5- I H L M C 5- M H H L 80 1 C4 H 240 S9 .0 9 M 16 0 S9 .0 8 L 80 1 C3 H 240 S9 .0 6 M 16 0 S9 .0 4 12 0 S9 .0 2 S9 .10 PV C AY EP or PU R PV C AY 1 80 S9 .12 1 80 S9 .13 1 EP or PU R 4 ) 80 S9 .11 B i nd e r s f o r p r imi ng c o a t ( s ) 1 80 2 16 0 3 240 2 -3 240 3 -4 1- p ack 2 - p ack W at er b o r ne p o ssib le x AY = A crylic x EP = Ep o xy x PU R = Po lyur et hane x P a i nt s ( l i q ui d ) N o . o f co mp o nent s 1- p ack PV C = Po lyvinyl chlo rid e 320 B i nd e r s f o r t o p c o a t ( s ) P a int s ( l iq ui d ) PV C - 16 0 2 N o o f co mp o nent s 1) 2) 3) 4) 5) 6) E xp ect e d d ur ab ilit y 2 ) 6 ) ( s e e 5 . 5 a n d I S O 12 9 4 4 - 1) P a i nt s y s t e m = Po lyvinyl chlo r id e x AY = A cr ylic x EP = Po lyur et hane x = Ep o xy PU R 2 - p ack W at er b o r ne p o ssib le x x x x x x Th e m e ch a n ic a l o r ch e m ica l s u rfa ce p re p a ra tio n re rq u ire d is d e s c rib e d in IS O 1 2 9 4 4 -4 . Th e d u ra b ility is in th is c a s e re la te d to th e p a in t s ys te m a d h e s io n to th e h o t-d ip -g a lva n ize d s u rfa c e . N D FT = N o m in a l D ry Film Th ic kn e s s . S e e 5 .4 fo r fu rth e r d e ta ils . If c o lo u r a n d g lo s s re te n tio n is re q u ire d , it is re c o m m e n d e d th a t th e la s t co a t s h o u ld b e b a s e d o n a lip h a tic P U R . Fo r e xp la n a tio n o f a b b re via tio n s , s e e fo o t o f ta b le L ig h t g re y s h a d in g in d ica te s th a t th e p a in t s ys te m s c o n c e rn e d w o u ld n o t n o rm a lly b e u s e d fo r th e s e c o rro s ivity c a te g o rie s . Th e y a re n o t lis te d in ta b le A.2 a n d /o r A.3 . H
  30. 30. When to paint the galvanized structure • Apply the paint system as soon as possible after galvanizing, after correct pre-treatment • Weathered galvanizing, which is suitably cleaned, can provide a satisfactory surface on which to apply paint but this should only be considered if material is situated on a site where corrosion is relatively mild and a stable weathered zinc surface has developed. • Painting of freshly galvanized structures should never be deferred in a marine environment where the need to remove unstable zinc corrosion products, prior to painting, could render the system less effective. • Or, apply a suitable primer at this stage, followed by a compatible top coat on site.
  31. 31. Conclusions • Galvanized steel is not well known, or much used, in Brazilian ports • Case studies show this could be an important market for the galvanizer • Severe marine climates suggest duplex coatings may be required to give 20 years before significant maintenance is required.

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