Comparative Safety Assessment of Chlorination Unit in Tehran Treatment Plants with HAZOP &amp; ETBA Techniques

Mohammadfam, Iraj; Mahmoudi, Shahram; Kianfar, Ali

doi:10.1016/j.proeng.2012.08.115

Cited by 13 publications

(6 citation statements)

References 6 publications

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“…In addition, in study of Mohammadfam et al on the application of the HAZOP technique in the assessment of the safety, health, and environmental risks (Case Study: National Oil Product Distribution Company), about 1180 risks were identified. Contrary to the results of this study, in the studies by Mohammadfam et al,38.13% of the identified risks fell in the unacceptable category with human errors accounting for 31.35% of risks (21,22). Ebrahimzadeh evaluated the potential risks in Shiraz Refinery using failure mode effects analysis (FMEA) (23).…”

Section: Discussioncontrasting

confidence: 99%

Identification and assessment of hazard in the Refractory Brick Production Company of Gonabad, Iran, using the hazard and operability technique

Azrah

Jamali

Jari

2014

JOHE

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Received: June 2015, Accepted: August 2015 Background: In the refractory brick manufacturing industry, because of the high risks associated with the level of dust in the factory environment and thermal stress, a precise identification of industrial hazards is required as a part of safety analysis. The aim of this study was to introduce a preventive approach to risk identification and assessment in the refractory brick production line. Materials and Methods: In this paper, methods such as observation of factory operations, process analysis through the factory diagrams, and interviews with employees were used. In addition, the risk levels of the factory were investigated using the risk matrix. Results:The results of the study showed 97 deviations from the main process with various causes and consequences. None of the deviations were in the unacceptable category with 3.09% falling in the undesirable category, 3.09% in the acceptable but in need of revision category, and 92.78% in the acceptable category. Conclusions:The results showed that 40.2% of the risks were caused by human errors. The installation of a secondary control valve in the transfer route of the glue vapors to the workplace, an alternative pressure control system, a secondary ventilation system, several fans near the furnace (redundancy), and a real-time phenol monitor are recommended. Moreover, regular analysis of safety, health, and environmental risks are some of the recommendations proposed to reduce the identified risk level.

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Section: Discussioncontrasting

confidence: 99%

Identification and assessment of hazard in the Refractory Brick Production Company of Gonabad, Iran, using the hazard and operability technique

Azrah

Jamali

Jari

2014

JOHE

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“…These approaches are in the form of changing suggestions in the work system which is provided to prevent errors. The guidelines are divided into 4 groups: (A) Equipment: Redesign or modifications in equipment (B) Education: Education or a change in education trend or process (C) Guidelines: Presenting new guidelines or revising them (D) Organization: Making changes in organization policy (13) All identified errors and the obtained data are recorded in the techniques worksheet. For this purpose, first we formed a team of doctors and nurses working in this unit and then trained them regarding the objectives and methods.…”

Section: Analysis Modifying or Providing Control Methods (Remedy Analmentioning

confidence: 99%

“…If the results were considered extreme or critical or led to unacceptable events, it must be considered. When an error is classified as a critical error it has led to a severe incident that results in damages for the structure of organization, industry, product and personnel (13). In medical jobs, risk level related to human errors can be easily determined regarding the symptoms, and consequences of each error in terms of intensity, likelihood and frequency.…”

Section: Analysis Of Criticality or Severity Of Error (Criticality Anmentioning

confidence: 99%

Classification and Assessment of Medication Errors in the Emergency Unit of a Hospital in Iran by SHERPA

Razavi¹,

Abdollahpour²,

Pahlevan³

2018

ME-JFM

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Background: Human errors are of the most important causes of accidents in the medical profession and impose exorbitant costs on societies. Therefore, the present research was carried out in order to classify and assess medication errors in the emergency ward of a hospital in Iran by SHERPA. Method:In a cross-sectional study, first the aims and procedures were instructed to physicians and then with their cooperation and presence in the unit and by viewing the activities, the errors were identified and analyzed using standard and authentic technique SHERPA.Results: According to results, 60 errors were identified including 23 errors (38%) related to physicians' tasks and 37 errors (62%) related to nurses' tasks. In both groups, the functional errors had the highest percentage. In the nurse group, both functional errors (69%) and reviewing errors (40.5%) were higher than the doctors (respectively 49% and 17.3%). Moreover, in both groups, acceptable errors with modification were higher and unfavorable errors were secondary. Conclusion: In both occupations, functional errors (with the most frequency) and reviewing errors should be considered as priorities for controlling such errors.

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“…Once again, the HAZOP method has shown its effectiveness in the field of water. Mohammad (Mohammadfam, Mahmoudi, and Kianfar 2012) carried out a study using two clearly defined methodologies, each with their own capabilities and limitations. This is due to the high use of chlorine in the water system installation, a potentially dangerous substance which is one of the most delicate aspects.…”

Section: Probability Of Failurementioning

confidence: 99%

“…Tools which can aid us under these circumstances, among others, include: Failure Modes & Effects and Criticality Analysis. FMEA has successfully been used in cases of identifying and preventing malfunctions(Mohammadfam, Mahmoudi, and Kianfar 2012;Ravi Sankar and Prabhu 2001).…”

mentioning

confidence: 99%

Risk analysis methods of water supply systems: comprehensive review from source to tap

2022

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Around 30–40 years ago, principles and methods were developed to conceptualise, assess and manage risk. These principles and methods are still, to a large extent, the foundation of the field. Over the past decade, many tools have been developed for risk analysis of water systems. Many advances have been made, both in the theoretical platform and in practical models and procedures. Various risk analysis approaches have been used to identify potential hazards, calculate the probability of accidents and assess the severity of consequences. The objective of this paper is to review these developments, focusing on the fundamental ideas and thinking behind them, considering their application at strategic, programmatic and operational levels of decision-making, in order to improve the understanding of stakeholders (researchers, regulators, etc.). To achieve this objective, scientific papers on risk analysis associated with water treatment systems were identified and reviewed, with particular focus on risk assessment methods (qualitative, semi-qualitative or quantitative, deterministic or probabilistic, etc.), tools (ETA, FTA, FMEA/FMECA, QMRA, HRA, Markov, etc.), applicability of these tools and results of case studies. A total of 141 references were selected on the basis of title sorting from databases as ScienceDirect, PubMed, Scopus, ISI Web of Science or SpringerLink, and a total of 68 articles were selected for full-text analysis. Main conclusions of this review and analysis efforts are as follows: (1) the scientific foundation of risk assessment and risk management is still an open issue; (2) principles, theories and base methods applicable to water supply systems are in continuous development, existing tools are suitable, and a growing number of applications are available and of great interest; and (3) risk analysis methodologies are in their journey to gain the necessary broad technical, community and political acceptance in the water treatment sector, and some gaps and opportunities have been included in the discussion.

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Comparative Safety Assessment of Chlorination Unit in Tehran Treatment Plants with HAZOP & ETBA Techniques

Cited by 13 publications

References 6 publications

Identification and assessment of hazard in the Refractory Brick Production Company of Gonabad, Iran, using the hazard and operability technique

Identification and assessment of hazard in the Refractory Brick Production Company of Gonabad, Iran, using the hazard and operability technique

Classification and Assessment of Medication Errors in the Emergency Unit of a Hospital in Iran by SHERPA

Risk analysis methods of water supply systems: comprehensive review from source to tap

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