Corrosion services

Exova Pittsburgh is a materials testing, inspection and corrosion engineering firm specializing in on-site and laboratory investigations, risk assessment, failure analysis and cathodic protection. We offer on-site and laboratory testing services performed by NACE* certified corrosion and materials engineers. Our fully equipped materials testing lab supports our field testing services, enabling real solutions to complex materials problems.

Our services include:

Expert assistance, proven solutions

We assist clients worldwide in failure analysis, corrosion mitigation and extending the service life of aging assets (above and below grade) in corrosive conditions. We combine the latest scientific knowledge with practical, proven solutions. We serve the oil and gas, water and waste water, chemical processing, manufacturing, aerospace, construction and automotive industries, and test a wide variety of samples including pipes, pipelines, tanks, transformers, rail, boilers, pumps, and various component type, metallic and plastic, at our in-house testing lab.

Our expert and diverse team of engineers has been recognized by the International Society of Materials (ASM) and the National Association for Corrosion Engineers (NACE) for their contributions to materials and corrosion engineering.

  • Our line-up of Corrosion Risk Assessment and Mitigation services include:
  • Setting-Up Corrosion Risk Assessment/Corrosion Mitigation Programs, Management of Capital Projects
  • Cathodic Protection Design, Implementation, Monitoring and Troubleshooting
  • Coating Selection / Application, Cathodic Protection, Corrosion Inhibitors System Design and Selection
  • Technical CP Audits and Troubleshooting in Corrosion Control Programs
  • Failure Analysis Root Cause Determination
  • Soil Testing for Corrosivity – In-House Testing Lab
  • Engineering Studies and Technical Consultation
  • Writing Standards / Certification Programs for Corrosion Assessment and Corrosion Control
  • Managing and setting up Big QA/QC Corrosion Risk Data Centers
  • Training Seminars in Corrosion Engineering, Coatings, Materials Selection and Design, and Cathodic Protection - NACE Approved Instructor

Pittsburgh corrosion centre of excellence

Our corrosion and materials testing services have an extended global reach, with our Pittsburgh facility ensuring the presence of our expertise in the North American region.

The Pittsburgh laboratory provides testing and consultancy services in materials, metallurgy, paint and coatings, as well as on-site corrosion risk assessment (CRA) and cathodic protection design, implementation, monitoring and troubleshooting. It also extends the company’s advisory services in areas including failure analysis, risk assessment, and soil corrosivity testing.

Our in-house soil testing laboratory has a specialized algorithm to rate soil corrosivity as it relates to buried steel assets for early detection of corrosion activity. 

Combining with Exova’s existing global capabilities, the specialist team in Pittsburgh work closely with our customers to improve the performance and quality of their in-service assets.

Let us deal with your problems

While Exova has the expertise and technology to tackle even the most difficult problems, your input is vital for a complete analysis.

We will consider all aspects of your problem and will respond promptly with a proposal for your work, including methods, costs and technical solutions.

Corrosion Expert - Dr Zee
  • Dr Zee - Pittsburgh, US


    Specialism
    - Corrosion, coatings, materials selection, cathodic protection and design

    Qualifications - B.S., M.S., PhD, FASM, FNACE

    Experience - Over 25 years' experience

    Dr. Zamanzadeh (Dr. Zee) has worked in the oil and gas and electric power utility industries throughout his career and has an intimate knowledge of corrosion risk in underground and above ground assets, including internal corrosion of pipelines.

    Dr Zee is also a NACE Approved Instructor who holds four certifications from NACE International as a coatings, materials selection, design and corrosion specialist.

  • Contact Us

    Whatever your query, we'll pass it on to our experts and respond within a very short space of time.
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Technical Papers
Fusion Bonded Epoxy Coatings (FBE) and Disbondment (7246)

By M. Zamanzadeh and Huiping Xu

Abstract

Fusion Bonded Epoxy (FBE) coating has been used for corrosion protection of underground pipe lines since the 1960’s. FBE provides protection of pipeline under cathodic protection even though there may be dis-bondment or blistering. FBE does not shield cathodic protection current under normal conditions, a characteristic which likewise distinguishes FBE coating from all other coating. In this paper failure analysis methodology will be applied to the principal mechanisms by which FBE coatings fail during long term service; with specific application to case studies involving blistering.

The case studies apply standard failure analysis techniques to determine the primary causes and modes of failures. Solution in blistered areas, pH and presence of cations and chlorides on the surface and in the coating will provide evidence for surface contamination/dis-bondment mechanism. If AC interference or shielding is present, localized corrosion attack in blistered areas can be detected prior to deep penetration in to wall thickness by effective corrosion monitoring. This can be achieved by on-time monitoring of soil corrosivity and AC/DC interference by test coupons.

Keywords: Corrosion Protection, Pipeline, Coating, Fusion Bonded Epoxy Coatings (FBE), Blistering, Coating Failure Mechanism, Cathodic Protection, AC Interference, DC stray Current Corrosion,
Shielding.

To read the full paper please click HERE (available from non-Exova website) >


Corrosion Risk Assessment and Failure Analysis in Industrial Water Systems - (7248)

By Mehrooz Zamanzadeh and Huiping Xu

Abstract

Industrial water system components are at increasing risk of damage due to corrosion and metal loss as they get close to the end of their design life or if the system exhibits any of the following: accelerated corrosion, perforation, deposit build up (plugging), discoloration, and excessive attack due to corrosive bacteria.

The purpose of this paper is to provide failure analysis case histories on corrosivity, pitting tendency and the risk associated with corrosion activity in industrial water systems.  Failure analysis methods, failure mechanisms, primary cause and sources of corrosion attack with recommendations are described at the end of each case history. Corrosion mitigation recommendations and risk ranking is based on many years of experiences and water system studies in industrial water systems.

Keywords: Corrosion  Risk,  Inspection,  Failure  Analysis,  Industrial  Water  Systems,  Corrosion  Mitigation, Corrosivity, Pitting Corrosion.

To read the full paper please click HERE (available from non-Exova website) >


Fatigue Failure Analysis Case Studies

By Mehrooz Zamanzadeh, Edward Larkin and Reza Mirshams

Abstract

Fatigue fracture can occur in many components such as fasteners and tubular pole structures. In this paper, fatigue failure mechanisms have been described and the application of the principles for failure analysis for each case will be presented. Cyclic loading at stresses above the fatigue limit of the material can initiate cracks at the surface or at internal defects. Macroscopic and microscopic observations of fatigue crack initiation and approaches for characterization of fatigue failures have been described.

Two case studies present application of laboratory analysis techniques to determine primary causes and modes of failures.

Keywords: Fatigue Cracking, Fatigue Failure, Metallurgical Investigation, Fracture.

To read the full paper please click HERE (available from non-Exova website) >


Cathodic Protection, Defective Coatings, Corrosion Pitting, Stress Corrosion Cracking and Soil Corrosivity Mapping and Corrosion Assessment in Aging Pipelines (Paper No. RISK16-8727)

By Mehrooz Zamanzadeh and Reza Mirshams

Abstract

Pipelines are among the most common means used for transporting hazardous gases and liquids in the United States. However, underground pipelines are aging and are at risk of corrosion failure due to coating degradation, pitting corrosion and stress corrosion cracking. Those tasked with maintaining these pipelines require an in-depth understanding of the locations where these aging pipelines are at risk of localized corrosion attack and cracking. Corrosion failures in aging pipelines are either sudden catastrophic ruptures or gradual leaks due to localized corrosion. Many factors associated with these corrosion areas are coating failure, degradation, disbondment, blistering, delamination, mechanicalpressure and stress concentration, galvanic action, corrosive ions, the presence of moisture, corrosive soils, AC interference, inadequate cathodic protection and shielding.

These areas have a much higher statistical probability of catastrophic failure and rupture. Most of the time initiation of stress corrosion cracking (SCC) and pitting corrosion are detected by coincidence in excavation and digs and is not targeted or predicted by analysis of corrosion performance parameters. Internal or In-line inspection (ILI) tools have limited capability for detecting or identifying stress corrosion cracking and pitting corrosion initiation. Here we would like to elaborate on corrosion risk assessment based on soil corrosivity mapping in addition to procedures outlined in NACE SP 0204-2015.

Keywords: Stress Corrosion Cracking (SCC), Pitting Corrosion, Corrosion Risk Assessment, Soil Resistivity, Soil Corrosivity Mapping, Coating Disbondment and Cathodic Protection.

To read the full paper please click HERE (available from non-Exova website) >

Corrosion services locations and related facilities

Unit 11, 1440 Graham's Lane,
Burlington, ON L7S 1W3

Contact: Roger Graham - General Manager
Tel: +1 905 631 7785

Fax: +1 905 631 7786

Email: americas@exova.com

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No. 5, 2712-37 Avenue N.E.,
Calgary, AB T1Y 5L3

Contact: Mike Yohemas - Operations Manager
Tel: +1 403 291 2022

Email: americas@exova.com

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15 High Ridge Court,
Cambridge, ON N1R 7L3

Contact: Roger Graham - General Manager
Tel: +1 519 621 8191

Fax: +1 519 621 7700

Email: americas@exova.com

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7407 Twp Road 485,
Drayton Valley, AB T7A 1R8

Contact: Mike Hooey - Operations Manager
Tel: +1 780 542 6812

Email: americas@exova.com

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7217 Roper Road NW,
Edmonton, AB T6B 3J4

Contact: Anthony Neumann - Operations Manager
Tel: +1 780 438 5522

Email: americas@exova.com

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#1 8822 100 Street,
Fort St. John, BC V1J 3W9

Contact: Max Hewitt - Operations Manager
Tel: +1 250 785 2731

Email: americas@exova.com

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11301-96 Avenue,
Grande Prairie, AB T8V 5M3

Contact: Michelle Fitzpatrick - Operations Manager
Tel: +1 780 532 8709

Email: americas@exova.com

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6203B - 43 Street,
Lloydminster, AB T9V 2W9

Contact: Anthony Neumann - Operations Manager
Tel: +1 780 874 9245

Email: americas@exova.com

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2395 Speakman Dr.,
Mississauga, ON L5K 1B3

Contact: Shakir Rasheed - General Manager
Tel: +1 905 822 4111

Fax: +1 905 823 1446

Email: americas@exova.com

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No. 104 19575-55A Avenue,
Surrey, BC V3S 8P8

Contact: Mathieu Simoneau - Operations Manager
Tel: +1 604 514 3322

Fax: +1 604 514 3323

Email: americas@exova.com

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Carretera Monterrey-Saltillo 3279-B, Santa Catarina,
Monterrey, NL 66367

Contact: Juan Rodriguez - General Manager
Tel: +52-81-8032-4444

Email: americas@exova.com

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2090 East 15th Avenue,
Gary, IN 46402

Contact: Gary Richter - General Manager
Tel: +1 219-882-4283

Fax: +1 219-885-6577

Email: americas@exova.com

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194 Internationale Boulevard,
Glendale Heights, IL 60139

Contact: Tami Tonon - Operations Manager
Tel: +1 630-221-0385

Fax: +1 630-221-0796

Email: americas@exova.com

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9555 Baythorne Drive, Suite 100,
Houston, TX 77041

Contact: Justin Spiess - General Manager
Tel: +1 281-848-0270

Fax: +1 281-848-0275

Email: americas@exova.com

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9925 Regal Row,
Houston, TX 77040

Contact: David Chirichello - Operations Manager
Tel: +1 281-848-0270

Fax: +1 281-848-0275

Email: americas@exova.com

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100 Business Center Drive,
Pittsburgh, PA 15205

Contact: Debra Riley - Materials Analysis Sales Manager
Tel: +1 412-788-1263

Fax: +1 412-788-1283

Email: americas@exova.com

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Street 46, Gate 16, Salwa Industrial Area, P.O. Box 23650,
Doha

Contact: Manohar Nayagar - Operations Manager
Tel: +974 4460 3202

Fax: +974 4460 3246

Email: middle.east@exova.com

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P.O. Box 31775, Street 133, Qasim Road, Dammam 2nd Industrial Area,
Al Khobar 31952

Contact: Adrian Pettitt
Tel: +966 13 8127750

Fax: +966 13 8121837

Email: saudiarabia.lab@exova.com

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Bldg. 2507, Way 6033, Block 260, Al Omran Street Gala, PO Box. 869,
Muscat PC 130

Contact: Robert Mckenzie - General Manager
Tel: +968 24501870

Fax: +968 24595619

Email: middle.east@exova.com

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PO Box 28, Sohar Industrial Estate,
Sohar PC 327

Contact: Robert Mckenzie - General Manager
Tel: +968 26751891

Fax: +968 26751557

Email: middle.east@exova.com

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Plot 25, Umm Al Naar (Sas Al Nakhl), P.O. Box: 9191,
Abu Dhabi

Contact: Neil Hold - Operations Manager
Tel: +971 (0)2 558 2345

Fax: +971 (0)2 558 4515

Email: middle.east@exova.com

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Plot 598-221, Dubai Investments Park 1, The Green Community, P.O. Box: 34924,
Dubai

Contact: Jason Dodds - Managing Director
Tel: +971 4 885 1001

Fax: +971 4 885 4004

Email: dubai.lab@exova.com

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Mehta House, Ashok Silk Mills Lane, Off. L.B.S. Marg, Ghatkopar (W),
Mumbai 400 086

Contact: Rahul Gupta - Operations Director
Tel: + 91 22 2500 0240

Email: India.lab@exova.com

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58 Sungei Kadut Loop,
Singapore 729501

Contact: Basab Bhattacharya - Operations Manager
Tel: +65 6372 5600

Fax: +65 6863 3004

Email: asia@exova.com

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Podnikatelska 39,
Plzen 301 00

Contact:
Tel: +420 378 023 888

Fax: +420 378 023 880

Email: europe@exova.com

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Via Della Pierina,
Crema 26013

Contact: Luca Cantoni - Operations Manager
Tel: +39 037 389 721

Fax: +39 037 389 7200

Email: crema@exova.com

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Gruppo Exova - C.T.R. Srl, Via Visco, 7/A,
Padova Limena PD 35010

Contact: Giantonio Toldo - Lab Manager
Tel: +39 049 610 400

Fax: +39 049 610 539

Email: padova@exova.com

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Kapitein Nemostraat 12,
Emmen, 7821 AC

Contact: Albert Bhoera - Laboratory Manager
Tel: +31 (0) 591 618555

Fax: +31 (0) 591 642947

Email: emmen@exova.com

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Artilleriplan 2, Box 3,
Karlskoga SE- 691 21

Contact: Göran Åkerberg - Operations Manager
Tel: +46 (0)586-810 55

Email: sweden@exova.com

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Nobymalmsvägen 1, Box 1340,
Linköping SE-58113

Contact: Rickard Jansson - Operations Manager
Tel: +46 (0)13 16 90 00

Email: sweden@exova.com

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ASJ-vägen 7, Box 1340,
Linköping SE-58113

Contact: Ulrika Conte - Operations Manager
Tel: +46 (0)13 16 90 00

Email: sweden@exova.com

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Studsvik 3, Box 613,
Nyköping SE-611 10

Contact: Jarno Hassinen - Operations Manager
Tel: +46 (0)13 16 90 00

Fax: +46 (0)13 16 90 20

Email: sweden@exova.com

Capabilities
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Unit 4 International View, ABZ Business Park, Dyce,
Aberdeen Aberdeenshire AB21 0BH

Contact: Campbell Ure - Operations Manager
Tel: +44 (0)1224 778900

Email: europe@exova.com

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8 - 14 High March, High March Industrial Estate,
Daventry, Northamptonshire, NN11 4HB

Contact: Lee Best - General Manager
Tel: +44 1327 702964

Fax: +44 1327 871119

Email: europe@exova.com

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Unit 3 Deeside Point, Zone 3, Deeside Industrial Park, Flintshire,
Deeside, CH5 2UA

Contact: VIki Ferguson - Sales & Marketing Manager
Tel: +44 (0)1244 833780

Email: europe@exova.com

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Unit 1 Yorks Park, Blowers Green Road,
Dudley, West Midlands, DY2 8UL

Contact: Helene Jones - General Manager
Tel: +44 (0) 1384 455 751

Email: europe@exova.com

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182 Halesowen Road,
Dudley, West Midlands, DY2 9PL

Contact: Rona Lorimer - General Manager
Tel: +44 (0) 1384 455 751

Email: europe@exova.com

Sectors
Capabilities
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Blackbrook Business Park, Narrow Boat Way,
Dudley, West Midlands, DY2 0XQ

Contact: Jonathan Pugh - General Manager
Tel: +44 (0)1384 455 880

Fax: +44 (0)1384 457 250

Email: europe@exova.com

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Queen Anne Drive, Lochend Industrial Estate, Newbridge,
Edinburgh, EH28 8PL

Contact: Allan MacFarlane - Operations Manager
Tel: +44 (0)131 333 4360

Fax: +44 (0)131 333 5135

Email: europe@exova.com

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6 Coronet Way, Centenary Park,
Salford, M50 1RE

Contact:
Tel: 0161 787 3250

Email: europe@exova.com

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Shotton Works,
Shotton, Deeside, CH5 2NH

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Holwick Road, Riverside Park,
Middlesbrough, Cleveland, TS2 1QS

Contact: Gary Merchant - General Manager
Tel: +44 (0) 1642 250 336

Fax: +44 (0)1642 250337

Email: teesside@exova.com

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