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Corrosion Advisory and Corrosion Consulting Services

  Typical Corrosion Consultancy Services  ||  Examples  || Service Quality Guarantee

At Corrosion Clinic, our NACE certified corrosion specialist (#5047) provides efficient and proficient corrosion advisory services, corrosion consulting services, in-house training, online and distance learning corrosion courses, corrosion diagnosis, failure analysis and expert witness in litigation and arbitration cases related to corrosion, materials, metallurgy, paints & metallic coatings including thermal spray metallizing, galvanizing, anodizing, chromating, phosphating, electroplating, electroless plating, mechanical plating, and sheradizing or diffusion coating.

• Corrosion advisory services on corrosion related issues.

• Corrosion diagnosis and trouble-shooting of process-related corrosion issues.

• Selection of materials, metallic coatings and paints to meet your project requirements.

• Third-party review of designs, drawings and technical specifications to identify potential corrosion risks, the compatibility of materials, the forms of corrosion and their mitigation.

• Third-party reviews of specifications on materials, processes and coatings to identify any clauses that may lead to potential dispute, arbitration or litigation among the parties involved. Corrosion liability can be avoided through proper specifications.

• Third-party review of contracts to identify potential corrosion liabilities and advices on how to deal with them.

• Technical bid evaluation support.

• Materials and coatings inspection, performance evaluation, and assessment of remaining life.

• Quality assessment of anodized aluminium (anodic coatings), chromate and phosphate coatings.

• Optimization of process parameters in anodizing and plating operations.

• Measurements of impedance and or admittance of anodized aluminum in accordance with relevant industry standards such as ASTM, BS, DIN, ISO and JIS.

• Life prediction of materials, components, structures,  paints, metallic coatings including thermal spray. metallizing, galvanizing, anodizing, chromating, phosphating, electroplating, electroless plating, mechanical plating, and sheradizing.

• Failure analysis of materials, paints & metallic coatings including thermal spray metallizing, galvanizing, anodizing, chromating, phosphating, electroplating, electroless plating, mechanical plating, and sheradizing.

• Expert witness and support in litigation and arbitration matters related to corrosion, materials, metallurgy, paints & metallic coatings including thermal spray metallizing, galvanizing, anodizing, chromating, phosphating, electroplating, electroless plating, mechanical plating, and sheradizing or diffusion coating.

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• Design of cathodic protection system for reinforced concrete structure.

• Review of coatings and galvanizing specifications for offshore corrosion protection of pipework onboard a FPSO.

• Design review and development of a corrosion monitoring plan and philosophy for a FPSO.

• Literature search and supply for a multinational oil & gas company on the corrosion resistance of steels and alloys in specified environments under specific conditions.

• Materials selection and corrosion testing for a multinational pharmaceutical company

• Review of designs for an overseas company on the compatibility and suitability of materials specified in a heat exchanger.

• Corrosion failure analysis of HRSG tube in a power plant.

• Corrosion diagnosis and corrosion analysis of an aircraft engine component

• Corrosion diagnosis and failure analysis of overhead power cables in a DC rail system

• Corrosion diagnosis and failure analysis of a 316L stainless steel plug and seat valve used in a chemical process plant

• Expert witness in the corrosion of stainless steel assembly

• Expert witness in corrosion of stainless cladding in buildings

• Expert witness in the corrosion of stainless steel chains

• Expert assistance in the corrosion of hot-rolled and cold-rolled steel plates

• Expert witness in the corrosion of silver coatings on mirrors

• Expert witness in the corrosion of steel pipe piles

• Expert witness in the corrosion of a lamppost

• Expert witness in electroless plating processes

• Expert witness in the corrosion of intermediate container boxes (ICBs)

• Corrosion analysis and life prediction of a galvanized roof in an industrial area

• Corrosion analysis and life prediction of roof deck assembly

• Corrosion inspection and assessment of low pressure and high pressure feedwater heaters in a power plant

• Assessment of design and failure analysis of military vehicles

• Corrosion analysis and metallurgical examination of a cast iron wedge gate valve

• Corrosion analysis of copper pipe pitting in the living quarters on an offshore platform

• Corrosion analysis of copper pipe cracking in hot tap water system in a hotel

• Corrosion inspection, and assessment of an underground ductile iron sewer pipe

• Corrosion inspection and metallurgical analysis of boiler tubes onboard a ship

• Investigation of Microbiologically Influenced Corrosion (MIC) of an underground water pipe

• Advisory, design and training on corrosion sensors for marine concrete structures

• Life prediction of a titanium nozzle used in a chemical process plant

• Inspection and corrosion diagnosis of a 316L stainless steel air-receiver

• Assessment of damage to fresh water tank coatings due to sea water flooding onboard a ship

• Corrosion of an Inconel 600 alloy in a gas scrubbing installation

• Assessment of the corrosion resistance of gold and gold-PTFE plating in printer inks

• Evaluation of the shelf life and the corrosion resistance of Al-based wafer in process chemicals

• Corrosion evaluation of Hastelloys (B, B2, C, C4, C-276, C22) in waste chemicals

• Corrosion resistance of aluminum in hot saline waters

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1. Corrosion Advisory & Independent Review of Reports and Documents

From: [removed]
Sent: Friday, May 14, 2004 4:43 PM
To: Qiu Jianhai (Assoc Prof)
Cc: [removed]
Subject: Seeking for Independent Review

Dear Prof Qiu,

We need your independent review on the topics shown below. Pls take a look at it and justify on how soon you can give us the review in writing. Also pls let us know what are the charges for this review. If you need further information to justify any thing, pls let me know. I'll also send you the thesis extract later on since i'm still preparing some extract of it. However, i've also attached a part of it in the word document.

A. We need your professional view on the following:
     (1). Deposition of scale is expected to occur after only about 200 to 400 hours of chiller operation.
     (2). Hence, based on 12 hours daily operation 365 days per year, we can work
            out that the BEST PRACTICE to do manual cleaning is 22 times/year.
B. For Anodic Corrosion Effect in condenser tubes. We need your professional
    view on the following (please refer to my powerpoint slides attached)
    (1). How serious is Anodic Corrosion effect on the normal operation of the condenser tubes?
    (2). For heat exchanger / condenser tubes maintenance, what do you think
           is the best method / strategy in preventing fouling and scaling?
    (3). Our company has developed an automated heat exchanger cleaning system
          for the prevention of fouling and scaling. You can check out our website
          at [removed] to have a basic understanding of the system. We need your
          independent review of our system as compared to systems available in the market.
          If you need further information to justify, please let us know.
C. The normal life of industrial chiller is quoted to be around 15-20 years as
     referenced to the following materials [removed]. How reasonable is this statement in
     the context of local and overseas environments?

Thanks. Best Regards,

[name removed]

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2. Corrosion Diagnosis & Corrosion Advisory on Green Water Problem

From:       [removed]
Date:       2nd August 1995
To:          Dr. Qiu J H
                N.T.U.
Fax#:      791-9414
Cc:          [removed], NY
Subject:  [name removed]  Medical Centre

Mr. [name removed] has asked us to give reasons and if possible solutions for a green water problem at the above Medical Centre.

(1) Copper Tubes are used throughout the hospitals
(2) Only 5 outlets show green water
(3) Water is supplied from a fully covered fibre glass tank.
(4) P.U.B. tests are enclosed, and the Cu looks high (is it really high?) but bacterial count is nil.

Can you give us a quick response to satisfy Mr. [name removed] and [hospital name removed]?
Call me if you need any more detail.

Regards,
[name removed]

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3. Review of Designs/Drawings

From: [a Spanish company]
To: <j.h.qiu@lycos.com>
CC:
Subject: Design Consultancy Enquiry
Date: Wed, 8 Sep 2004 18:09:06 +0200

Dear Sirs,

we are interested in contracting your services for an independent design consultancy review for two industrial shell and tube heat exchangers (AET type). These shell and tube heat exchangers are being supplied by our Company, [name removed] (Engineering Contractor Company), and the final Client is [company name removed].

In order to give you a brief idea, the materials in question are:

- Tubesheets: Carbon Steel titanium cladded from the tube side process and bundle cage in SS 316 L ( SS 316 L baffles, tie rods ,spacers, sealing strips and bundle runners instead of carbon steel ).
- Tubes: Ti
- Baffle plates: SS316 L
- Process shell side fluid: Hydrogen (Wet Sour/HIC Service)
- Tube side fluid: Sea Water
- Shell Material: KCS HIC Resistant (Full details such as datasheets, specifications and drawings will be provided later).

The consultancy would consist of a design review of this equipment with particular regard to material choice for tubes, baffles and tubesheets with respect to the possibility of galvanic corrosion and/or hydrogen embrittlemet cracking between tubes, baffles and tubesheet materials owing to the design conditions and process fluids. We would appreciate it if you could provide us with a quotation and/or indicate your standard rates for this type of consultancy including the delivery date for your final technical report.

We look forward to hearing from you.

Best Regards,
[name removed] Project Engineer [company name removed], Heat Transfer Division
Madrid (Spain)

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4. Corrosion Advisory & Corrosion Diagnosis

5. Corrosion Diagnosis & Failure Analysis of Underground Fuel Pipes

From: [name removed]
Sent: 16 September 2004 18:06
To: Qiu Jianhai (Assoc Prof)
Cc: [names removed]
Subject: fuel pipe corrosion

Hi Prof Qiu,

We have 2 pipe sections that are leaked. They are made of API schedule 40 pipes and are of 8.1 mm thickness and 200 mm dia. The inputs we need are as follows:

1. Did corrosion start from inside out or outside in?
2. The probable cause or causes which triggered the corrosion which led to
    the leak/failure i.e. the nature of the corrosion.
3. The likely period as to the initiation of the corrosion.
4. As for the other part of the section which appears to be in good condition,
    what would be the estimated remaining shelve life? Basically, we would like
    to determine whether this is an isolated incident or there is "more" to come.

This is only the first stage of the inputs required. The second stage study would require a non-destruction manner of assessing the overall health state of the piping network. This would need to be discussed further after the first stage is completed.

Thank you and regards
[name removed]

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6. Corrosion Advisory on Cr 6+ Chromium Coatings

From: [name removed]
Sent: Monday, May 09, 2005 12:45 AM
To: Qiu Jianhai (Assoc Prof)
Subject: qns on CR VI

Hello Prof Qiu,

I am currently invovled in a project to test for chromium VI content in screws. The test method that my company using is by diphenylcarbazide colourometric analyses test kit. When solution containing Cr VI reacts with diphenylcarbazide, solution changes to different pink colour depending on the concentration of Cr VI. I had done several tests to find out how much time is needed for all Cr 6+ in the screw to be dissolved. This is what has been done: 3 screws were placed into 400 cc of distilled water and bring to boil for 3,5, 8,10 mins. Solution is left to cool for 1 hr and tested with the test kit. With the same number of screws and boiling time and about the same plating thickness, the intensity of the colour is different and readings were inconsistent.

Do You have have any advice on the preparation of the testing solution?
Will Cr 6+ ions vaporize when the water boils?
Will heat changes CR 6+ to Cr 3+ even if solution is between pH 5~ 9?

Thank you for your help.

Regards
[name removed]

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7. Corrosion Testing of Epoxy Coated Weld (Mild Steel)

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8. Corrosion Analysis and Corrosion Diagnosis

From: [name removed]
Sent: Wednesday, March 30, 2005 6:21 PM
To: Qiu Jianhai (Assoc Prof)
Subject: Corrosion Analysis

Prof Qiu,

We have a case whereby the customer’s pipes (Galvanized Steel Pipe, Mild Steel Pipe) have signs of corrosion:

  - Galvanized Steel Pipe show white rust (spots),
  - Mild Steel Pipe show brown rust (spots),
  - Painted (red) mild steel pipe show yellow patches.

All of them are being used (in service) in a chemical storage room. The Galvanized Steel Pipe and unpainted Mild Steel Pipe are air ducts. The painted mild steel pipe is the sprinkler system. These corrosion spots are only observed within the room. The pipes run through another room but no signs of corrosion were observed on the pipe in other rooms. We are suspecting the air containing certain chemicals that are causing the observed corrosion. The owner would like to know what chemicals are causing the corrosion and how should the chemicals be stored upon identifying the source of corrosion. Can we have your advice and recommendations please?

Regards,
[name removed]

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9. Corrosion Failure Analysis and Life Estimation

From: [name removed]
Sent: Tuesday, October 12, 2004 11:54 AM
To: Qiu Jianhai (Assoc Prof)
Subject: ANALYSIS OF BOLTS

Dear Dr. Qiu,

I have the following case which will require your analysis. A tensile test was conducted on the bolt. The sample fractured at the center where the gasket was located instead of at the thread. The bolts were used on manhole of a chemical storage tank. These tanks are fibreglass with PVC lining inside. The Dia/Ht is 8 x 19.8 M. Design density is 1.25. Typical 33.4% HCL density is abt 1.17. Machined bolt A4 SS316 for the manhole covers with neoprene gasket were used. We wanted to know:

1. What caused the fracture of the bolt at the gasket area? (i.e. embrittlement, crevice...)
2. What is the approximate lifespan of the bolt (or maintenance plan) if they were to continue using stainless steel?
3. Any recommendation of a better material for the application?

Regards,
[name removed]

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10. Corrosion Life Prediction of Galvanized Steels

From: [name removed]
Sent: Friday, 11 May 2001 9:12 AM
To: 'Qiu Jianhai (Assoc Prof)'
Subject: Corrosion Prediction

Dear Sir,

We would like to tests to determine whether steel components for fencing (steel posts, base plates, wire mesh) coated with the following will be able to withstand local weathering conditions for a period of 30 years in the local environment:

- a) normally galvanized
- b) hot dipped galvanised to more than 80micron thickness
- c) coated with "Supercoating" (an Al/Zn alloy)

Kindly forward to us any requirements on your side, price and type of test to be conducted. We look forward to your favourable reply.

regards,
[name removed]

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11. Corrosion Leach Test

From: [name removed, a pharmaceutical company in USA]
Sent: Mon, 21 Aug 2000 14:19:26 
To: j.h.qiu@mailcity.com

I have a coupon for 316L SS and one of Hastalloy C-276. I need to have a leach test performed by a standard method to determine metal lost to solution of 3N H2SO4. I am interested in the qualitative results and well as quantitative. My company is concerned about loss of Nickel into the solution. Please advise.

Bill  [name removed] Eng. Manager

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12. Corrosion Diagnosis

Date: Mon, 21 Aug 2006 03:12:51 -0700 (PDT)
From: "[name removed]"
Subject: Icon control panel corrosion
To: jianhai_qiu@yahoo.com

Hello Dr. Qui,

Photos of the corrosion are attached.

The corroded block is Nickle plated mild steel with stainless steel plugs and fittings attached. All tubing and the reservoir are Stainless Steel. The 3,000 psi MWP, pump body is Steel with Stainless Steel bolts and mounting frame.

All paint is supposed to be, two-pak Epoxy with zinc base coat. The Blue paint flaked off very easy indicating poor surface preparation. The white Accumulators appeared to be well painted.

The hydraulic fluid is water based glycol, 'Houghto-Safe 273', specifications available at: http://houghton.grepp.com/art.asp?id=53

The installation is an Off-Shore drilling rig which may use caustic chemicals. Although this area is not directly exposed to the fluid it may be subject to; splash, spray or wash-down of the drilling fluids.

The unit itself is mounted approximately 20 meters above the Sea with an ambient breeze of about 10 km.

I look forward to your diagnosis and hope to meet you,

Best Regards
[name removed]

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