Process operating manual procedures covering startup, normal. Despite these comments there is quite a distinct benefit from carrying out a proper. In other cases, the individual sent to participate in the hazop study may not have been exposed to and knowledgeable of the types of the design limits that are pursued during the hazop study. However, in the hazop study carried out, the focus was in the system, that has been installed inside of a container. Appendix 1 contains examples of guide words applicable to continuous processes, batch processes, manual tasks operations and maintenance, electrical. As a general rule, a hazop facilitator allows approximately 5. The following is an example of creating deviations using guide words and process parameters. Section4details a case study with the hazop and fta analysis. Examples of lists of guide words for use in hazops.
Complete and document your hazop study using your smartphone tablet while onsite with your expert team without returning to. Operability study hazops concentrate on identifying both hazards as well as operability problems. Hazop is the perfect tool to understand what can go wrong in a plant due to deviations from the design and operational intent. A hazard and operability study hazop is a structured and systematic examination of a complex planned or existing process or operation in order to identify and evaluate problems that may represent risks to personnel or equipment.
Hazop example for example a hazop node may be a day tank that pumps a reactant to the plant every day. The definition phase typically begins with preliminary identification of risk. Some examples of combinations of guidewords and parameters. The guide word hazop technique is the most widely known and is one of the hazard identification techniques used by saudi aramco. This module includes a hazop study example for the explosion at the. It is used to identify deviations from normal safe operation, which could lead, to hazards or operability problems, and to define any actions necessary to deal. Project title project number that is, work order number for the parent project project scope study date participant names, job titles, organisation, brief profile b signed off hazop study record of discussions c. Common mistakes when conducting a hazop and how to avoid them. While the hazop study is designed to identify hazards through a systematic approach, more than 80% of. What if check lists hazop fmea fta cpqra quantitative quantitative fmea, failure mode effects analysis is a preliminary qualitative technique that may require preliminary quantitative analysis miniqra. This is a short extract from risktecs hazop study teaching module. It first provides a high level overview of the process hazards analysis pha work.
If, in the process of identifying problems during a hazop study, a solution becomes. Hazid can be conducted at a unit or system level with little documentation other than a design concept. Using hazoplopa to create an effective mechanical integrity. Global hazop coordination by production engineering houston define hazop documentation and participant qualification requirements. Its purpose is to reduce risk and ensure the safety of workers in plant environments. This document is based on iec 61822, hazard and operability studies hazop studies.
Psm, rmp, calarp, mechanical integrity, osha, epa, process safety abstract many people view the conduct of a hazop lopa to address regulatory requirements as a chore, and stop there. Often, hazop studies are recorded by an individual designated as a scribe or technical secretary. It is primarily used to study complex operational hazards and functions in chemical processing plants but is also used in nuclear. The chemical industry in spain and serious accidents 2. Recommendation of experts or specialists required for the hazop team.
As iec 618822003 hazard and operability studies hazop. A quality risk management tool n vishal gupta, charan h y. The concept involves investigating how the plant might deviate from the design intent. Hazop and whatif studies focus on a system or node level and are dependent on accurate process safety information. For example, a prudent designer will have allowed for foreseeable variations within the process creating a larger design envelope than just the basic requirements and the hazop will be looking at ways in which this might not be sufficient. In a hazop study, a team of individuals systematically brainstorms the process under. Hazop training it is essential that all team members including the leader are adequately trained in the. A hazop study is a hazard study which concentrates on how the design will cope with abnormal conditions, rather than on how it will perform under normal conditions. Layer of protection analysis lopa 4, frequently integral with the hazop study, is a complimentary tool that is best patterned to integrate with the hazop study. Leak typically was a cause for example for a deviation low flow or no. Hazop is a good baseline methodology for evaluating issues related to chemical reactions within the individual processes by guiding the team in identifying potential critical deviations.
Hazard and operability study process safety an overview. Hazop studies for other plants have also been planned. Many software packages are available, each with its own advantages and limita. Hazard and operability analysis hazop is a structured and organized technique for risk. A hazop software merely documents the hazop, which btw a human is supposed to do, as part of a team of multidisciplinary experts. In this article a preventive approach called hazard and operability study hazop and hazard identification hazid was. In total, 40 techniques have been identified in this study. Hazop study report, remediation of the former orica villawood. The guideline also includes typical hazop guide words and a worksheet as an example.
Hazard and operability analysis hazop is a structured and systematic. What if check lists hazop fmea fta cpqra quantitative quantitative fmea, failure mode effects analysis is a preliminary qualitative technique. In this form the system will be tested later in the project e. A hazop workshop template and study report format is suggested for. Additional streamlining can be achieved by grouping related processes and supplementing the hazop study with whatif analysis. The hazop hazard and operability method page 2 of 7 hazop objectives philosophy hazard vs. Due to a lack of sophisticated tools and expertise, the results of such studies remain in paperwork form and important data may be lost over time. Jan 16, 2019 this is a short extract from risktecs hazop study teaching module. Advantages, disadvantages and limitations to the defence sector or the particular domain 1. A hazop study is conducted by a team of individuals led by a person knowledgeable in the hazop technique.
A hazop study identifies hazards and operability problems. Examples of process parameters include the following. The documentation of hazop analyses is often facilitated. Apr 22, 2014 documentation the following hazop study information and documents are required for the files. The only advantage that i see is that the hazop software allows you to document everything in a structured way. This document presents some guiding principles in the execution of hazop analyses. Preparing for a successful hazoplopa making or breaking. Risk assessment teams may modify the template as necessary based on factors such as. Hazop hazid study for indane bottling plant j0519 hazop hazid iocl ibp pattikalan rev1 11 executive summary the indian oil corporation limited, indane bottling plant, pattikalan is spread across the total area of 33 acres having the capacity of 1850. Define hazop documentation and participant qualification requirements implement strict criteria for hazop leader facilitator who guides hazop staff hazop team and leader from global organization cold eyes participants develop charter with scope, team members, etc. A hazard and operability hazop study is a structured and systematic examination of a planned.
The first formal paper describing the hazop technique was published in 1974 by an ici employee 3. Before commencing a hazop study, it should be confirmed that it is the most appropriate. This advisory paper gives a broad indication of what is required in undertaking a hazop with a list of references included for further study. It gives guidance on application of the technique and on the hazop study procedure, including definition, preparation, examination sessions and resulting documentation and. A valuable risk assessment tool to improve process safety. With many years of experience in the management of safety, hazard and risk, germanischer lloyd gl are extremely well placed to deliver sil assessments. The design intent is transfer liquid from tank to plant possible deviations from intent are evaluated using guide words such as less than, more than, reverse, no and others. Hazop is an acronym that stands for hazard and operability study it was pioneered at ici imperial chemical industries, uk during the late 1960s. A safety integrity level sil assessment determines the effectiveness of safety systems based on the probability of tolerable incidents that can occur within a number of processing demands. Therefore a project may be studied several times in its lifetime. Applied in its fullest sense, a complete hazop study would require a large investment in time and effort by the people involved. The hazop study should preferably be carried out as early in the design phase as possible. The objectives, scope, study team, and the steps in organizing the study will be discussed in.
Hazop study carried out covered only steady state operation of the system. Mar 26, 2014 this webinar covers the hazop methodology in the context of the overall process safety management lifecycle. Original hazop actions not completed plant deterioration changes in standards increased awareness of pressure relief scenarios adequacy of flare and blowdown systems plant incidents typical examples poor or no hazop as part of management of change moc. Using hazop lopa to create an effective mechanical integrity program steven t. One individual must be assigned the task of recording the results. Many hazop study team leaders act as their own scribe. Hazop hazard and operability is the leading method to identify plants topevents related to the process involved. Practical approach to vendor package hazop studies and. The hazop study is carried out for all major equipment andor each pipeline joining the equipment in a process through series of guide words around which a number of question are formulated to arrive at the possible deviations. Under the guidance of the team leader, they record pha sessions and may draft the study report. Hazard and operability study process safety hazop can be defined as the application of a formal systematic examination of the hazard potential from deviations in designed operations and the consequential effects on the facilities. Review article hazard and operability hazop analysis. A hazard and operability analysis hazop is a risk management technique used to identify potential hazards and functional flaws in existing or planned plant systems. A description of the technique, including its purpose 1.
In that sense, it should be called a hazop documenting software and not as a hazop analysis software. It can be used to streamline hazop data gathering and reporting. Hazop study report, remediation of the former orica. Pharmaceutical quality assurance group, department of pharmaceutics, jss college of pharmacy, shivaratreshvara nagar mysuru, karnataka, india570015. Moderation of the hazop meetings by an experienced, independent team leader. This deliverable reports the hazard and operability study hazop of the. The objective of this standard is to provide a guide for hazop studies of systems utilizing the specific set of guide words defined in this document. Appendixsadpresent complementary documentation of case study. What is iauditor and how can i use it for hazop studies. This standard is identical with, and has been reproduced, from iec 61882. Complete and document your hazop study using your smartphone tablet while onsite with your expert team without returning to the office. Hazop software documentation training, certification. Hazard and operability study hazop procedure tuv sud.
Another key issue that is often not investigated is the potential interactions between the vendor package and the process system. In some cases, the best way to ensure a thorough, effi. Application of hazard and operability study hazop in evaluation of health, safety and environmental hse hazards. Role of valves in hazop analysis, safety and environmental. A hazard and operability study or hazop is a systematic, critical examination by. Hazop studies since the core methodology does not require identification also referred to as rating of the probability or severity of. Hazop study with the help of modern data processing and presentation techniques. Client objectives scope objectives of this hazop location of the hazop meeting example the objective of the hazop is to assess and evaluate potential hazards related to the implementation of the planned modifications. Risk analysis of a fuel storage terminal using hazop and fta.
The purpose of this document is to provide guidance for the carrying out of hazard and operability studies hazops and on the reporting of the study results. Norhayati, petroliam nasional berhad 4397000, 01 october 2003, uncontrolled copy, c bsi. Hazop report clients template bornemann consultancy. Pdf application of hazard and operability study hazop. To achieve full benefits from a hazop study, it has to be properly documented and. For example, many older plants are upgrading their control and instrumentation systems. Introduction to process hazard analysis using hazop.
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