BS EN ISO 19901-9:2019

What is ISO 19901‑9 about?  

ISO 19901‑9 specifies principles for the structural integrity management (SIM) of offshore structures subjected to known or foreseeable types of actions. 

ISO 19901‑9 specifies requirements and provides recommendations applicable to the following types of fixed steel offshore structures for the petroleum and natural gas industries: 

• Caissons, free-standing and braced 
• Jackets 
• Mono towers 
• Towers 

ISO 19901‑9 is applicable to topsides, including but not limited to the main decks, deck legs, topsides modules, crane pedestals, helideck, drilling derrick, skid beams, flare booms, exhaust towers, radio tower, conductor support frames, and lifeboat davits. 

In addition, ISO 19901‑9 is applicable to compliant bottom founded structures, steel gravity structures, jack-ups, other bottom founded structures and other structures related to offshore structures (e.g. underwater oil storage tanks, bridges and connecting structures), to the extent to which its requirements are relevant. 

BS EN ISO 19901‑9 contains requirements for planning and engineering of the following tasks: 

• Integrity management data requirements 
• In-service inspection and integrity management of both new and existing structures 
• Assessment of existing structures 
• Evaluation of structures for reuse at different locations 
• Evaluation of structures for their future removal 

Who is ISO 19901‑9 for? 

ISO 19901‑9 on structural integrity management for offshore structures is useful for: 

• Offshore construction and installation companies 
• Operation platform operating team 
• Offshore oil and gas companies 
• Offshore environment regulators 
• Safety assurance services for offshore production 
• Disaster management services 

Why should you use ISO 19901‑9?  

Structural integrity management (SIM) is the implementation of engineering, inspection, maintenance, monitoring and remediation activities required to demonstrate the fitness-for-service of a structure for its intended application throughout its total service life and prevent/mitigate severe or catastrophic health, safety, environmental, or structural events. The SIM process as specified in ISO 19901‑9 lets you have a proactive approach to monitor, evaluate and assess the structural conditions and establish a procedure to validate the fitness-for-service of an offshore structure. 

A SIM process is used to develop an inspection scope, program and frequency that, when executed, provides information on the condition of the structure, which can be used to understand present and emerging probability from operating the topsides, and provide information for determining the ongoing strategy for mitigating that probability. ISO 19901‑9 helps you with a well-implemented SIM process that enables you to maintain the structure’s fitness-for-service for the operational life of the platform and through the decommissioning process.