Gb2013 frank goodwin_ international zinc association
Upcoming SlideShare
Loading in...5
×
 

Gb2013 frank goodwin_ international zinc association

on

  • 226 views

 

Statistics

Views

Total Views
226
Views on SlideShare
226
Embed Views
0

Actions

Likes
0
Downloads
6
Comments
0

0 Embeds 0

No embeds

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Gb2013 frank goodwin_ international zinc association Presentation Transcript

  • 1. A galvanização e os investimentos em portos by Frank Goodwin William Marques International Zinc Association
  • 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. 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. Brazilian Shipyards DWT under construction
  • 5. Brazilian Shipyards Today’s Order Book and New Orders as of January 2012
  • 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. Port Facilities
  • 8. Portos e Navios
  • 9. Port of Vancouver, BC Delta Port- Vancouver’s largest container terminal
  • 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. Delta Port – galvanized structures
  • 12. Delta Port – galvanized structures
  • 13. Dredge “Ned Edwards” Port of New Orleans, USA Galvanizing used for handrails, stairs, walkways, and platforms
  • 14. Dredge “Ned Edwards” Port of New Orleans, USA
  • 15. Arbon Marina Lake Constance, Switzerland
  • 16. Arbon Marina
  • 17. Arbon Marina
  • 18. Bottighofen marina Lake Constance
  • 19. Bottighofen Marina
  • 20. Bottighofen Marina
  • 21. Galvanized boat trailers at Bottighofen Marina
  • 22. Bottighofen marina
  • 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. 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. 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. Atmospheric corrosive environments classified in terms of ISO 9223
  • 27. Galvanized & Painted Weed Bars in a Lock Location: Delfzijl, The Netherlands After 17 years, still no sign of rust
  • 28. Specify type and thickness of paint in accordance with ISO 12944:1998 Part 5 Table A.9
  • 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. 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. 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.