The Effects of Corrosion on Offshore Helidecks
Offshore helidecks are vital for the safe transfer of personnel and equipment to and from offshore platforms, especially in the oil and gas industry. However, these structures are constantly exposed to some of the harshest environmental conditions on the planet. Saltwater spray, high humidity, and extreme weather accelerate the process of corrosion and surface degradation on helidecks.
Detrimental effects of corrosion
Structural Weakening: Corrosion eats away at the metal components of the helideck, undermining its ability to safely support helicopters, crew, and cargo.
Reduced Surface Friction: As corrosion and wear degrade the helideck surface, the friction level drops. This increases the risk of helicopters skidding during landing or takeoff, especially in wet or icy conditions.
Safety Hazards: Compromised helidecks can lead to catastrophic accidents, including helicopter crashes, injuries, or fatalities, as well as environmental damage and financial loss.
The Importance of Regular Inspections and Friction Tests
Given these risks, regular inspections and friction tests are not just recommended-they are mandatory under international regulations such as UKCAA CAP 437 and IOGP guidelines.
Why Regular Inspections Matter
Early Detection: Routine inspections identify early signs of corrosion, wear, or structural fatigue, allowing for timely maintenance and repairs.
Regulatory Compliance: Inspections ensure that helidecks meet the latest national and international safety standards, protecting operators from legal and financial repercussions.
Asset Protection: Regular checks help extend the lifespan of expensive helideck infrastructure by preventing minor issues from escalating into major failures.
Friction Testing
Safety Assurance: Friction tests measure the grip of the helideck surface. A minimum average surface friction value of 0.60μ is required inside the touchdown/positioning marking (TD/PM). On fixed platforms and 0.65μ on moving platforms, and 0.50μ outside, per UKCAA CAP 437.
Frequency: Friction tests are required at least annually, but if results exceed the minimum by 0.1μ, validity can extend to 24 months.
Equipment: The Findlay Irvine Micro Grip friction tester is the only UKCAA approved friction tester and must be used to ensure accurate, reliable results.
Operational Impact: Successful friction tests can allow for the safe removal of landing nets, which themselves can be a hazard.
Helideck Certification-Africa: A Proven Track Record
Helideck Certification-Africa (HCA), part of the Flight Safety Group, is a leader in helideck inspection and certification across Africa and beyond. Their approach includes:
- ISO 9001:2015 Approved Processes: All inspections are conducted under strict quality management standards.
- Comprehensive Inspections: HCA performs visual inspections for corrosion, wear, and compliance of markings, as well as structural assessments, fire safety checks, and operational readiness reviews.
Advanced Friction Testing: HCA uses the UKCAA-approved Findlay Irvine Micro Grip tester to ensure helideck surfaces meet or exceed friction requirements. - Regulatory Expertise: Their inspections and certifications align with all major international standards, including UKCAA CAP 437, IMO, and USCG requirements.
- Detailed Reporting: Findings are documented with photographs and comprehensive reports, ensuring transparency and actionable recommendations.
HCA’s rigorous inspection and certification process has helped offshore operators maintain the highest safety standards, minimize operational risks, and ensure regulatory compliance across numerous installations.
Conclusion
Corrosion is a persistent threat to the safety and integrity of offshore helidecks. Regular inspections and friction tests are essential to detect and mitigate these risks, protect assets, and ensure the safety of all personnel. Helideck Certification-Africa, as part of the Flight Safety Group, has consistently delivered thorough, standards-based inspections and certifications, supporting the offshore industry’s commitment to safety and operational excellence.