NCOE
IS YOUR SYSTEM SAFE? IS IT RELIABLE?
Wind farm operators are aware that good reliable systems are needed to ensure all aspects of running and maintaining wind farms are safe and efficient. However, it is also necessary to understand engineering hazards associated with the plant and process systems. By systems, we mean process and power systems such as oil, gas, chemicals, electrical power, lubrication, cooling etc. It is important to understand and recognise the hazards that could make these systems fail. Therefore, safeguards to reduce these risks can be built into the design, thereby reducing risk to the health and safety of operators and maintenance crews, the environment and the plant and process of the asset.
NEWCASTLE CHAMBERS OF ENGINEERING NCOE employ the investigative tools to determine the hazards and reduce risk on a regular basis. As part of the design process it is also necessary to ensure the safeguards are reliable and fit for purpose. The safeguards when determined are checked usually by reliability analysis.
IMPORTANT CONSIDERATIONS Three important considerations for those involved in an engineering system design, whether for an offshore oil & gas installation or wind farm, are...
• Has the system a potential to harm people – this is considered as safety?
• Has the system a potential to cause harm to the environment?
• Does the system carry commercial risk?
HAZOP STUDY Generally the starting point for a project safety review is a HAZOP study. This identifies hazards and operability problems through credible deviations from the design intent. The methodology is based on parameters and guideword examination of the plant or system i.e. no pressure or high pressure, etc. This is an important step in ensuring that possible hazards have been recognised
FUNCTIONAL SAFETY
Functional Safety is not about slips and trips but about dynamic active systems and reducing the risks associated with them.
Following a HAZOP study, the three considerations mentioned above are further investigated and mitigated against by the use of functional safety assessment methods. This methodology has been driven by the UK and international safety organisations. The investigative methods used are also very effective when used to investigate risk reduction for environment and commercial risk.
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