Corrosion Mitigation What is the Problem? Leaks leading to: - - PowerPoint PPT Presentation

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Corrosion Mitigation What is the Problem? Leaks leading to: - - PowerPoint PPT Presentation

Jun 04, 2023 222 likes •792 views

Storage Tank Corrosion Mitigation What is the Problem? Leaks leading to: Wastage Lost resources Environmental damage What is the Problem? Corrosion is the main cause of these leaks. Other causes could be environmental

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Storage Tank Corrosion Mitigation

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  • Leaks leading to:
  • Wastage
  • Lost resources
  • Environmental damage

What is the Problem?

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Corrosion is the main cause of these

  • leaks. Other causes could be

environmental damage or damage due to impact

What is the Problem?

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Belzona Solutions for Storage Tanks

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Tank Base Sealing

Problem areas for Tanks

Deteriorated Base Seam Defects Through-wall Defects Corroded Hand Rails Internal Corrosion 1 2 3 4 5

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Tank Base Sealing

Solutions for Tanks

Tank Base Sealing Composite Patch Repair Plate Bonding for Through-wall Defects Hand Rails Bonding Internal Lining 1 2 3 4 5

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Tank Base Sealing

  • Corrosion of tank wall and

chine angle

  • Deterioration of seal
  • Corrosion of tank base
  • Tank

Wall

  • Tank base
  • Water / moisture ingress

under the tank base through this joint, when the tank moves the capillary action squeezes the water under the base

  • Concrete or

Asphalt

Problem Areas

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Tank Base Sealing Traditional Repairs Mastics Steel Skirt Bonded Rubber

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Tank Base Sealing

Tank Base Sealing 1

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Tank Base Sealing: Belzona 3111

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Tank Base Sealing

Belzona Tank Base Sealing System

Advantages of using a Belzona system?

  • Microporous
  • Flexible
  • Weather resistant
  • Excellent adhesion
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Case studies – Tank Base Sealing

Petrochemical Plant, UK (2010)

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Case studies – Tank Base Sealing

Refinery, West France (2004)

  • 1. Failing System
  • 2. Surface conditioned
  • 3. Testing the Annular Ring
  • 4. Application – 13 years on
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Case studies – Tank Base Sealing

International Petroleum company, China (2014)

  • 1. Tank farm overview
  • 2. Damaged tank base
  • 3. Application of Belzona 3211
  • 4. Completed application
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Case studies – Tank Base Sealing

Petrochemical Plant, Croatia, 2014

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External Protection

External solutions for Tanks

External Corrosion Protection

Problems – Corrosion - UV damage

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External Protection

Problem:

  • Corrosion
  • Environmental damage
  • Impact damage

Conventional repair methods:

  • Hot work – Health and safety issues
  • Impractical as tank needs to be empty
  • Damaging to the internal lining in the

process

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External Protection

Belzona Solution:

Advantages:

  • High Zinc content
  • UV resistance
  • Cold applied
  • Durable
  • Spray applied
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Plate Bonding

Introduction

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Belzona plate bonding permanent repair Deteriorated tank roofs Evident through-wall defects

Tank roof repair

2006, Oil Distributor, England

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External Tank Protection

PEMEX Mexico, Tamaulipas field

  • 1. External corrosion
  • 2. Belzona 5111, 6111 and 5811
  • 3. Completed application
  • 4. 12 years later
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External Tank Protection

IVECO-Turin, Italy

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External Tank Protection

Chemical Plant, Poland

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External Tank Protection

Sugar Factory, France

Coating of the silos Finished application

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External Protection

Petroleum plant, South Africa (2013)

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Internal Protection

Internal Solutions for Tanks

Internal Lining 5

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Internal Protection Common Problems:

  • Corrosion
  • Erosion
  • Chemical attack
  • Maintenance/cleaning (steam
  • ut)

Leads to:

  • Thin/through wall defects
  • Leaks
  • Delamination of existing

coating

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Internal Protection Conventional Repairs:

  • Welding
  • Standard paint systems

Belzona Solution:

  • Cold applied
  • Resistant to a wide range of

chemicals/temperatures

  • High adhesion
  • Long-term protection
  • In-situ repair
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Internal Protection

Oil company, Tunisia

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Internal Protection

International Oil company, Chad (2003)

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Internal protection

Tank, Pulp Factory, Germany (2007)

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Internal Protection

France, 2017

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Belzona Solution

Corrosion Protection of small bore nozzles Small bore nozzles are difficult to blast properly, difficult to apply coating and cannot inspect properly A cost effective alternative to CRA is to insert corrosion inert sleeve and bond into place using suitable Belzona material Same Belzona adhesive can be used to form flange face providing complete protection.

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Nozzle Insert Technology

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Nozzle Insert Technology

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Flange Face Forming

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Flange faces formed using Belzona materials to prevent corrosion and leaks

Flange Face Forming

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Belzona solutions – Storage Tanks

Why Belzona?

Resistance to a wide range of chemicals and temperatures Fast curing for minimal downtime Solvent free no shrinkage Maintainable Brush or spray applied Cold applied No hot work

Application: In-service performance:

Long-term solution High adhesion

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Belzona seals tank shell to the concrete floor

Romania April 2018

CASE STUDY 1

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APPLICATION SITUATION

13m 12m

Volume: 1500m3

A steel tank with a concrete floor used to store a mix of salt water and oil

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PROBLEM

There was a gap of up to 6 mm between the concrete floor and the steel shell. It had to be sealed to stop the tank from leaking.

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SOLUTION

1. Enlarge the gap 2. Remove contaminated concrete 3. Clean and sandblast steel 4. Degrease the surface

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SOLUTION

  • 5. Insert NBR rubber

cord into the gap

  • 6. Close the gap with

Belzona 4111

  • 7. Apply Belzona 1321

for corrosion protection

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No leaks after 1 year

  • f operation

4 people completed this application in 5 days

OUTCOME

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Belzona restores tank wall and protects against corrosion

Romania August 2018

CASE STUDY 2

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APPLICATION SITUATION

12.3m 9m

Volume: 980m3

A steel tank used to store a mix of salt water and oil

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PROBLEM

The tank suffered from an advanced internal corrosion.

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SOLUTION

1. Clean, degrease and sandblast the area 2. Apply Belzona 1111 to restore the wall thickness 3. Bond steel plates

  • ver holes

4. Apply Belzona 5892 to protect the tank bottom and shell from corrosion

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Fast and easy back to service

Belzona was the only alternative due to the risk of sparks

OUTCOME

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Belzona repairs a crack and holes in a tank shell

Romania May 2019

CASE STUDY 3

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APPLICATION SITUATION

A 20-year-old with significant mud deposits

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PROBLEM

  • 80% wall

thickness loss

  • Crack developed

from the bottom of the tank

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SOLUTION

1. Old plate removed 2. Nozzle bonded with Belzona 1212 to redirect the leak 3. Area sandblasted

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SOLUTION

  • 4. Belzona 1111 used to

restore lost wall thickness

  • 5. Specially designed

metal plate bonded in place

  • 6. Plug fitted and

Belzona 3412 applied for corrosion protection

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SLIDE 55

Welding was the

  • nly alternative =

4 weeks downtime Belzona solution = 2 days with no disruption

OUTCOME