Читать книгу Underwater Inspection and Repair for Offshore Structures - Gerhard Ersdal - Страница 34

NORSOK N‐005 (Standard Norge 2017b) was published in an updated version in 2017 and incorporated a major hazard‐based approach to the integrity management of structures. This approach is also implemented in other newer standards for structural integrity management such as ISO 19901‐9 (ISO 2019a). The approach is based on risk analysis methodology, understanding the hazards the structure is exposed to and minimising the likelihood of these hazards and possible unfavourable consequences occurring. In major hazard management this will typically include implementation of suitable safety measures (often called barriers or safety critical elements) and are established and maintained throughout the life of the facility. This current approach to SIM is based on the Norwegian and UK Major Hazard regulatory regimes.

As‐is surveillance as described in this standard includes activities to determine anomalies and changes of all types relevant for the safety of the structure. The most important of these surveillance activities is the inspection of the structure’s condition and the determination of loadings. The in‐service inspection process described in this standard is very similar to the process described in Figure 10.

Figure 10 An example of a typical SIM process based on a major hazard approach.