Process Safety Specialized Studies
(HAZOP, QRA, PHA Studies)

We expertise in conducting Quantitative Risk Assessment (QRA) to (1) identify, quantify and assess the risk due to operation of process plants, storage and handling of hazardous chemicals within the facility and to the public (2) suggest recommendations in order to reduce the risk to human life, assets, environment and business interruptions to as low as reasonably practicable. Software PHAST v8.9 & Safeti v8.9 with latest add on modules is being used by a well-trained and operational experienced team to carry out accurate consequence modelling and risk modelling respectively. Acceptability of the estimated risk will then be judged based upon standard criteria appropriate to the particular situation. Study report is used to understand the significance of existing control measures and to follow the measures continuously. Wherever possible, preventive and mitigative risk reduction measures are suggested to reduce the risk levels with focus on client requirements.

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Fire and Explosion risk assessment is an off shoot of QRA study and offered by specialised consultant in the area of Fire safety which help organizations identify and mitigate potential fire and explosion hazards effectively. It assesses fire potential of the facilities and provides engineering solutions to ensure the safety of assets by providing mitigation measures. We have an unique expertise of offering both FERA and Fire water Design solution.

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Occupied building risk assessment study is another branch of QRA study and offered by specialised consultant in the area of building safety which help organizations to locate critical assets like control rooms and substations. It assesses types of buildings and provides design solutions to ensure the safety of building by suitable positioning, wall strengthening etc .

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In order to align/relocate/ position the fire and gas detectors in the process plants, we offer two- and three-dimensional gas mapping studies tailor made to suit client requirements. We are well versed with latest mapping software like Detect 3 D. We are capable of building fit for purpose 3 D model from Auto CAD 2 D drawings and position detectors on them. This is an engineering study deliverable where output will be clear and concise with respect to location.

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We offer services in conducting Escape, Evacuation and Rescue analysis to evaluate the effectiveness of escape, evacuation and rescue provisions in response to any emergency conditions and to recommend suitable safest EER means if the existing/available measures are found to be inadequate. We conduct calculations to ensure that real time scenario is simulated and personnel are evacuated safely in case of real emergency.

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In order to ensure safe location of emergency relief, and maintenance vents and personnel are not affected by release from these fugitive vents, the dispersion analysis is carried out and correct location, and orientation is verified. The flare radiation study is conducted to ascertain height of flare and sterile radius.

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Dust explosion is an important but often ignored major accident hazard. In order to ensure dust explosion relief systems are correctly installed, several Codes are available for validation. Chola carries out such highly technical studies with help of software and ensure compliance to International Codes.

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We offer specialized services in conducting Hazard Identification Studies (HAZID) to identify the potential hazards and to reduce the probability and consequences of an incident in site that would have a detrimental impact to the personnel plant, properties and environment. HAZID (Hazard Identification) is a qualitative technique for the early identification of potential hazards and threats effecting people, the environment, assets or reputation. The major benefit of a HAZID study is to provide essential input to project development decisions. It is a means of identifying and describing HSE hazards and threats at the earliest practicable stage of a development or venture.

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We offer specialized services in conducting Bow-Tie Analysis to visually represent and analyse the causes and consequences of a specific hazard or potential incident. It is a risk assessment and management tool that provides a clear and concise overview of the critical control measures and barriers in place to prevent or mitigate the occurrence of a particular event. It is to enhance risk understanding, facilitate effective decision-making, and improve the overall safety and resilience of an organization or system.

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We offer specialized services in conducting What-if Analysis to identify hazards, hazardous situations, or specific event sequences that could produce undesirable consequences. An experienced group of people identifies possible abnormal situations, their consequences, and existing safeguards, and then suggests alternatives for risk reduction where obvious improvement opportunities are identified or where Safeguards are judged to be inadequate. The method can involve examination of possible deviations from the design, construction, modification, or operating intent. What-if analysis is quite useful to analysis hazards in operation/activities which can not be represented in P&IDs.

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We offer specialized service in conducting RAM study to help organizations identify potential weaknesses, assess the impact of failures, and implement preventive measures, ultimately enhancing the reliability, availability, and maintainability of their assets. By focusing on these three components and employing effective RAM analysis techniques, organizations can optimize performance, minimize downtime, and remain at the forefront of technological advancements.

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We offer expert services on SIMOPS with expertise in risk management, operational safety, and industry-specific practices. Their involvement helps organizations identify and mitigate the risks associated with simultaneous operations and ensuring safe and efficient operations within shared operational areas or facilities. SIMOPs shall cover all aspects of safe operation when two or more separate operations occur close enough that they may impact each other, such that the activities in one area could affect the health and safety of persons in an adjacent area.

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• Safety Integrity Level (SIL) Identification - We provide specialized services that involve conducting a "SIL" (Safety Integrity Level) classification. This classification process helps establish a design that is suitable for its intended purpose, specifically for safety measures that involve instrumentation. The goal is to create measures that effectively reduce hazards in terms of safety, environmental impact, and economic losses. SIL determination is carried out to assign safety functions to protective layers, identify the necessary safety instrumented functions, and determine the appropriate safety integrity level for each of these functions.

• Safety Requirement Specification - We specialize in providing Safety Requirement Specification services, which involve defining the safe condition of the process for each identified safety instrumented function. This includes determining the potential sources of demand and their frequency on the safety instrumented function, establishing proof-test intervals, specifying the required response time for the safety instrumented system to bring the process to a safe state, determining the safety integrity level and mode of operation (demand/continuous) for each safety instrumented function. Additionally, we describe the process measurements and their trip points within the safety instrumented system, outline requirements for energizing or de-energizing to trigger a trip, specify the procedure for resetting the safety instrumented system after a shutdown, and establish the maximum acceptable rate of spurious trips. These activities are conducted in accordance with the guidelines outlined in the IEC 61511 standard.

• SIL Assessment - One crucial phase in the conceptual design process of a Safety Instrumented Function (SIF) is determining the SIF subsystem after preparing the Software Requirements Specification (SRS) through a SIL Assessment exercise. The SIF design is then subjected to verification to ensure that it satisfies the functional and integrity requirements.

• SIL Verification & Validation - We provide specialized services to perform SIL Verification & Validation. The purpose of this phase is to confirm, through inspections and testing, that the installed and operational safety instrumented system, along with its associated safety functions, meet the requirements outlined in the safety requirement specification

• Layer of Protection Analysis (LOPA) - Protection Analysis (LOPA) to evaluate and quantify the risk linked to a particular hazardous event or situation. LOPA is a commonly employed method in process safety management to assess the sufficiency of current safeguards and pinpoint additional protective measures necessary for reducing risks to an acceptable level.

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