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Engineering Protection, Ensuring Performance

At Defender Corrosion Control we specialise in protecting critical infrastructure through expert coating and corrosion consulting services. From inspection and verification to failure analysis and maintenance planning, we help clients safeguard their assets, extend service life, and optimise maintenance budgets.

Our approach combines deep technical knowledge with practical, field-tested strategies—ensuring every solution is both effective and cost-efficient. Whether we're evaluating contractor performance, guiding remedial work, or helping you stretch limited resources further, our focus remains the same: engineering protection, ensuring performance.

Inspection & Verification

We inspect protective coatings to verify performance, identify defects, and support compliance, warranty, and lifecycle planning.

Project Management & Scheduling

We manage coating-related schedules and project execution using tools like Primavera P6, Agile planning frameworks, Lean methodologies, and earned value tracking to ensure quality, progress, and readiness.

Marine In-Service Coating Surveys

We assess marine coating condition using international standards to support classification surveys, defect documentation, and lifecycle planning.

Pre-Delivery & Post-Sea Trial Coating Inspections

We inspect coatings before delivery and after sea trials to identify defects, coordinate repairs, and document compliance for warranty and classification readiness.

Inspection & Verification

We deliver comprehensive inspection services for corrosion protection systems across marine and industrial assets. Our process evaluates surface preparation, coating application, environmental conditions, and defect types using Australian and internationally recognized standards (e.g., ISO 8501, IMO PSPC, IACS ESP, AS 3894, AS/NZS 2312).

We assess coating performance in ballast tanks, cargo holds, pressure vessels, voids, structural components and hull structures, verifying adhesion, dry film thickness (DFT), and immersion durability. Inspections include defect classification, flash rust grading, and coating condition ratings to support lifecycle planning, warranty readiness, and regulatory compliance.

Services includes:

  • Surface Preparation Verification
    Confirm substrate condition, rust grade, cleanliness, and surface profile against standard and project specifications prior to coating.
  • Environmental Condition Monitoring
    Measure and record surface temperature, humidity, and dew point before and during coating application.
  • Coating Application Oversight
    Inspect each stage of coating application for compliance with manufacturer's technical data sheets and relevant standards.
  • Inspector Qualification & Compliance Checks
    Ensure inspectors meet qualification standards and maintain accurate records for classification and regulatory review.
  • Documentation for Coating Technical File for Vessels (CTF)
    Compile inspection reports, verification records, and compliance evidence for inclusion in the vessel's lifetime coating file.
  • Verification of Materials & Certification
    Check coating container labels to record batch numbers and use by dates for traceability and compliance.

Project Management & Scheduling

We provide integrated project management and scheduling services to ensure coating operations are executed efficiently, safely, and in alignment with strategic milestones.

Our team develops detailed schedules for inspections, surface preparation, coating application, and drydock activities using industry-standard tools such as Primavera P6.

We coordinate work planning across stakeholders, facilitating collaboration between inspectors, contractors, and owner representatives to maintain progress, quality, and budget control.

Our services include daily progress tracking, issue documentation, and performance reporting to support transparent decision-making. We create and maintain master schedules with earned value metrics to measure actual progress against planned outcomes, enabling proactive adjustments and risk mitigation. Whether managing a single vessel or a multi-phase maintenance program, our approach ensures readiness, compliance, and operational reliability.

Services includes:

  • Work Planning & Coordination
    Develop detailed schedules for coating operations, inspections, and drydock activities to ensure alignment with project milestones and resource availability.
  • Team Integration & Oversight
    Facilitate collaboration between inspectors, contractors, and owner representatives to maintain quality and progress within budget and specification.
  • Daily Progress Tracking & Reporting
    Monitor coating progress, record completed areas, and document issues to support transparent communication and timely decision-making.
  • Dry-Docking & Maintenance Scheduling
    Coordinate inspection and coating activities around drydock windows, ensuring readiness and minimizing delays.
  • Primavera P6 Scheduling
    Develop and manage detailed project schedules using P6 to ensure alignment with milestones and resource availability.
  • Master Schedule Development & Reporting
    Create and maintain integrated master schedules with regular updates and performance tracking.
  • Progress Measurement & Earned Value Reporting
    Track actual progress against planned metrics to evaluate cost and schedule performance.

Marine In-Service Coating Surveys

We conduct structured in-service coating surveys to assess the condition and performance of protective systems across marine assets. Our inspections follow IACS Enhanced Survey Programme (ESP), IMO PSPC, and classification society requirements, ensuring regulatory compliance and operational readiness. We evaluate coating condition using ISO 4628, ASTM D714, and SSPC visual guides to identify defects such as blistering, cracking, flaking, detachment, and cathodic disbondment.

Survey planning includes dividing tanks and hull structures into defined zones (e.g., deckhead, side shell, transverse bulkheads) using frame and strake references, enabling localized assessment and repair prioritization. We perform non-destructive dry film thickness (DFT) checks and environmental testing (dew point, humidity, soluble salts), and apply rust scale analysis using ISO, ASTM, SSPC, and European standards to quantify breakdown severity. Our team supports classification survey cycles-Annual, Intermediate, and Special-by providing detailed coating condition reports, sampling coordination, and forensic documentation to assist with pre-docking planning, warranty claims, and lifecycle extension strategies.

Services includes:

  • Coating Condition Evaluation & Classification
    Conduct structured inspections of marine coatings in accordance with IACS Enhanced Survey Programme (ESP), IMO PSPC, and classification society requirements.
  • Defect Identification & Documentation
    Identify common failures such as blistering, cracking, flaking, detachment, and cathodic disbondment using ISO 4628, ASTM D714, and SSPC visual guides
  • Survey Planning & Area Mapping
    Divide tanks and hull structures into defined survey zones (e.g., deckhead, side shell, transverse bulkheads) using frame and strake references. Apply localized assessment techniques to ensure accurate reporting and prioritization of repairs.
  • Thickness Measurement & Surface Testing
    Conduct non-destructive dry film thickness (DFT) checks and surface condition tests (e.g., dew point, humidity, soluble salts)
  • Rust Scale & Breakdown Analysis
    Utilize comparative rust scales (ISO, ASTM, SSPC, European) and visual diagrams to quantify corrosion extent. Support decision-making for maintenance prioritization and coating system selection.
  • Survey Types & Frequency Support
    Support classification survey cycles including Annual, Intermediate, and Special Surveys. Provide detailed coating condition reports to assist with pre-docking planning, warranty claims, and lifecycle extension strategies.
  • Sampling & Laboratory Coordination
    Collect and preserve coating samples for lab analysis when required. Ensure proper handling, labeling, and documentation to support forensic investigations or failure claims.

Pre-Delivery & Post-Sea Trial Coating Inspections

We perform detailed coating inspections before vessel delivery and after sea trials to ensure protective systems meet specification and warranty requirements. Our underwater hull assessments in drydock identify damage, missed areas, and premature breakdowns prior to handover. We evaluate ballast tank coatings following seawater immersion to detect blistering, delamination, or poor adhesion, and review cargo tank coatings post-cleaning trials to identify defects caused by mechanical cleaning or cargo simulation.

Defect mark-up and repair coordination ensures all issues are documented and rectified before delivery. We compile inspection records, environmental data, and dry film thickness (DFT) measurements for inclusion in the vessel's Coating Technical File (CTF), supporting classification compliance and long-term asset integrity.

Services includes:

  • Underwater Hull Assessment
    Inspect hull coatings in drydock prior to delivery to identify damage, missed areas, or premature breakdown.
  • Ballast Tank Seawater Testing
    Evaluate coating performance after immersion during sea trials to detect blistering, delamination, or poor adhesion.
  • Cargo Tank Coating Review
    Assess tank coatings post-cleaning trials to identify defects caused by mechanical cleaning or cargo simulation.
  • Defect Mark-Up & Repair Coordination
    Document coating defects and coordinate rectification prior to vessel handover to ensure compliance and warranty readiness.
  • Coating Technical File (CTF) Documentation
    Compile inspection records, environmental data, and DFT measurements for inclusion in the vessel's lifetime coating file.
Proud member of Henderson Alliance Submarine Institute of Australia Australasian Corrosion Association Inc AAMP Senior Certified Coatings Inspector AAMP

Get in touch

Let’s talk about how Defender Corrosion Control can help with your next project.

Address
Henderson WA 6166
Telephone
0488 128 858
Email
[email protected]
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