PRESESERVATION FOR OFFSHORE WELLHEAD PLATFORM EQUIPMENT

Abstrak

Offshore oil and gas facilities operate under highly corrosive environmental conditions that accelerate material degradation and equipment failure. This study reviews the implementation and effectiveness of a structured preservation program applied to offshore wellhead platform equipment during construction, storage, and pre-commissioning phases. The primary objective was to maintain equipment integrity, functionality, and operational readiness while preventing corrosion, contamination, and mechanical deterioration during idle periods. The preservation methodology encompassed protective coatings, nitrogen blanketing, desiccant application, lubrication, sealing, and systematic documentation in accordance with international standards such as API RP 686, NACE SP0170, and ISO 12944. Results indicated that protective coating coverage reached 96–97% with appropriate dry film thickness, 98% of valves remained operable after cycling and greasing, and electrical insulation resistance values exceeded 200 MΩ. Nitrogen-blanketed vessels and piping maintained airtight conditions with zero leakage. The study found that the multi-barrier preservation system—combining coatings, cathodic protection, and environmental control—was highly effective in preventing corrosion and ensuring mechanical reliability.The findings highlight that structured preservation programs are not merely preventive maintenance activities but strategic components of asset integrity management that improve reliability, reduce rework, and minimize commissioning delays. Continuous monitoring, improved environmental control, and digital documentation are recommended to enhance preservation performance and support long-term sustainability in offshore operations.