What is eHAZOP Study?
The definition of an electrical hazard and operability study (eHAZOP) is a study using a structured and collaborative approach to identify and assess all potential hazards in the electric power system, then eliminate or minimize existing potential electrical hazards. The primary intent of eHAZOP is to increase the safety of personnel who will operate and maintain electrical equipment. —Omazaki Consulant is a consultant who provides electrical HAZOP study or electric system hazard and operation studies and assessment services as part of electrical safety services. Please contact us if you are looking for electrical system hazard and operability study or eHAZOP assessment consultants. Contact us by sending an email to cs@omazaki.co.id or by filling in the form in contact.
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Background and Objectives of eHAZOP
The main goal or objective of an electrical system hazard and operations (E-HAZOP) study is to identify all hazards and operations issues associated with the electrical grid. High voltage distribution systems will be discussed in this review while mains power generation will be considered for interface issues only. In the case of several identical electrical systems, only one system will be analyzed while the study results will apply to all identical systems.
The detailed objectives include:
- Identifying the reaction of installation systems and equipment to electrical disturbances and irregularities
- Assess whether the reaction of the system, plant or equipment will have a detrimental impact on society, personnel, the environment, asset protection and the Company’s business continuity policies
- Identify system resilience and reliability issues such as single point failure, common cause failure, etc
- Investigate the operation of the power grid
- Recommend corrective actions that will reduce or eliminate such adverse impacts, or request further investigation to identify appropriate actions
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eHAZOP Methodology
Review the documents that will be provided to the team during the session:
- Single line diagram (required): refers to electrical distribution
- Equipment room layout
- General details of electrical installations (cabinet, etc.)
- The philosophy of earthing and lightning
- Black start/load shedding requirements (interface with main PGU contractor)
- Overall cable routing layout
- Description of the ESD/F&G interface with the electrical system (or causes and effects of ESD) general electrical protection and (if available) measurement diagram
Reference documents to be provided during the eHAZOP assessment session:
- Overall site layout
- Design philosophy
- Process description, PFD, PID, C&E diagram should be available for reference
- Hazard area classifications (HAC) list
- Equipment list and datasheet (if available)
- Equipment room fire protection philosophy and system
- Process description, PFD, PID, C&E diagram should be available for reference
- Lighting layout if available
- Selectivity/harmonic studies (if available)
- Team members should understand the information and circumstances of the project and prepare notes regarding important issues that should be raised
- At the beginning of the session related to the electrical sub-system, as well as at the beginning of each node, a presentation will be made by an electrical engineer from the design team/project team to explain the system
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Contact Omazaki Consultant if you need eHAZOP (electrical system hazard and operability) study and electrical HAZOP assessment consultants services.
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Related Articles
References
- IEC 61882:2016 Hazard and operability studies (HAZOP studies) – Application guide
- ISO 31000 Risk management
- ISO 17776:2000 Petroleum and natural gas industries — Offshore production installations — Guidelines on tools and techniques for hazard identification and risk assessment
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