40+ Williams Commerce Technology Interview Questions and Answers

To investigate an accident, follow a systematic approach involving data collection, analysis, and identification of root causes.

• Gather all available information about the accident, including eyewitness accounts, photographs, and any relevant documents or records.

• Conduct interviews with individuals involved in the accident to gather their perspectives and insights.

• Examine the accident scene for physical evidence, such as skid marks, debris, or damaged equipment.

• Analyze any ava...read more

Permissible exposure limits (PEL) are the maximum allowable concentrations of hazardous substances in the workplace.

• H2S: PEL is 10 ppm (parts per million) over an 8-hour workday

• CO: PEL is 50 ppm over an 8-hour workday

• CO2: No specific PEL, but recommended exposure limit is 5,000 ppm over an 8-hour workday

• Methane: No specific PEL, but recommended exposure limit is 1,000 ppm over an 8-hour workday

Short term exposure limit (STEL) of H2S is 10 ppm.

• STEL is the maximum concentration of a substance that a worker can be exposed to for a short period of time without suffering from immediate or long-term health effects.

• The STEL for H2S is set at 10 ppm (parts per million) by OSHA (Occupational Safety and Health Administration).

• Exposure to H2S at levels above the STEL can cause symptoms such as eye irritation, headache, nausea, and dizziness.

• Workers should be trained on the ha...read more

In case of an emergency in production plant, I would follow the emergency protocol and take necessary actions to ensure safety.

• Immediately alert the emergency response team and follow the established emergency protocol

• Evacuate the affected area and ensure all employees are accounted for

• Assess the situation and take necessary actions to contain the emergency

• Communicate with management and stakeholders to keep them informed

• Conduct a thorough investigation to determine the cause...read more

Safety refers to the condition of being protected from harm, danger, or injury.

• Safety involves taking measures to prevent accidents and injuries

• It includes following rules and regulations to ensure a safe environment

• Safety can be achieved through proper training and education

• Examples of safety measures include wearing protective gear, using safety equipment, and practicing safe behaviors

• Safety is important in all industries, including construction, manufacturing, and healthca...read more

Steps to be taken for work in a safety critical loop

• Identify the safety critical loop

• Define the safety requirements

• Design the loop with redundancy and fault tolerance

• Implement the loop with safety standards

• Test the loop thoroughly

• Maintain the loop regularly

Confined space refers to an area that is enclosed and has limited access and ventilation.

• Examples include tanks, silos, sewers, and tunnels.

• Workers entering confined spaces must follow safety protocols and use specialized equipment.

• Hazards in confined spaces include lack of oxygen, toxic gases, and physical obstructions.

• Proper training and communication are crucial for working in confined spaces.

Work at height refers to any task performed at a height where a person could fall and injure themselves.

• Work at height involves working on ladders, scaffolding, roofs, or any other elevated surface

• It is important to use appropriate safety equipment such as harnesses, guardrails, and safety nets

• Workers should be trained on how to safely work at height and how to properly use safety equipment

• Examples of work at height include construction work, window cleaning, and tree trimmin...read more

Firefighting involves identifying and extinguishing fires to prevent damage and loss of life.

• Assess the situation and determine the type and size of fire

• Use appropriate firefighting equipment such as fire extinguishers, hoses, and pumps

• Follow safety protocols and wear protective gear

• Coordinate with other firefighters and emergency responders

• Evacuate people from the affected area

• Monitor the situation and ensure the fire is completely extinguished

Prevent accidents by identifying potential hazards and implementing safety measures.

• Conduct regular safety audits and risk assessments

• Provide proper training and education to employees

• Implement safety protocols and procedures

• Use appropriate safety equipment and gear

• Encourage a culture of safety and accountability

• Regularly review and update safety policies and procedures

LEL stands for Lower Explosive Limit and is the minimum concentration of a gas or vapor in air that can ignite.

• LEL is a safety term used in industries dealing with flammable gases and liquids.

• It is expressed as a percentage of the gas or vapor in air.

• If the concentration of the gas or vapor is below the LEL, it is too lean to ignite.

• If the concentration is above the LEL, it is too rich and can ignite.

• For example, the LEL of methane is 5% which means if the concentration of me...read more

Preventing fire requires proper handling of flammable materials and regular maintenance of electrical equipment.

• Store flammable materials in designated areas away from heat sources

• Regularly inspect and maintain electrical equipment

• Install smoke detectors and fire extinguishers in appropriate locations

• Train employees on fire safety procedures and evacuation plans

JSA/JHA stands for Job Safety Analysis/Job Hazard Analysis. It is a process of identifying potential hazards and risks in a job or task.

• JSA/JHA is a systematic approach to identify and mitigate potential hazards in a job or task

• It involves breaking down a job or task into steps and analyzing each step for potential hazards

• The analysis includes identifying the hazards, assessing the risks, and implementing controls to mitigate the risks

• JSA/JHA is commonly used in industries su...read more

LEL&UEL stands for Lower Explosive Limit and Upper Explosive Limit respectively. They are the minimum and maximum concentrations of a flammable gas or vapor in air that can ignite.

• LEL is the lowest concentration of a gas or vapor that can ignite

• UEL is the highest concentration of a gas or vapor that can ignite

• Concentrations between LEL and UEL are considered flammable

• LEL and UEL vary depending on the gas or vapor

• LEL and UEL are important for safety in industries dealing with ...read more

H2S is a colorless, flammable, and toxic gas with a strong odor of rotten eggs.

• H2S is commonly known as hydrogen sulfide.

• It is produced naturally by the breakdown of organic matter and is found in natural gas, crude oil, and volcanic gases.

• It is highly toxic and can cause respiratory failure, loss of consciousness, and even death.

• H2S is used in various industries such as oil and gas, mining, and pulp and paper.

• It is also used in the production of chemicals such as sulfuric ac...read more

Hchem is not a known term or acronym in the engineering field.

• Hchem is not a commonly used term in engineering

• It is possible that the interviewer misspoke or meant to ask a different question

• Without more context, it is difficult to provide a more specific answer

Hazop is a structured and systematic technique used to identify potential hazards and operability problems in industrial processes.

• Hazop stands for Hazard and Operability Study

• It involves a team of experts analyzing a process to identify potential hazards and operability issues

• Hazop is commonly used in the chemical, oil and gas, and pharmaceutical industries

• The process involves breaking down the process into smaller parts and analyzing each part for potential issues

• Hazop can ...read more

Fire is a chemical reaction that releases heat, light, and various gases.

• Fire is a rapid oxidation process that occurs when fuel (such as wood, paper, or gasoline) combines with oxygen in the presence of heat or a spark.

• It releases heat, light, and various gases such as carbon dioxide, water vapor, and nitrogen oxides.

• Fire can be beneficial (such as for cooking or heating) or destructive (such as in wildfires or house fires).

• It can also be classified into different types base...read more

MSDS stands for Material Safety Data Sheet.

• MSDS provides information about hazardous chemicals and substances.

• It includes information about the physical and chemical properties of the substance, health hazards, precautions for safe handling and use, and emergency procedures.

• MSDS is required by law for all hazardous chemicals and substances used in the workplace.

• It is important to read and understand the MSDS before using or handling any hazardous substance.

• MSDS is often avail...read more

Confined spaces pose a significant hazard due to limited entry and exit points, poor ventilation, and potential for hazardous substances.

• Limited entry and exit points can make it difficult to escape in case of an emergency

• Poor ventilation can lead to a buildup of toxic gases or lack of oxygen

• Potential for hazardous substances such as chemicals, fumes, or dust

• Examples include tanks, silos, sewers, and tunnels

• Proper training and equipment are necessary for safe entry and work i...read more

Modes of heat transfer include conduction, convection, and radiation.

• Conduction is the transfer of heat through a material without any movement of the material itself.

• Convection is the transfer of heat through the movement of fluids, such as air or water.

• Radiation is the transfer of heat through electromagnetic waves, such as from the sun or a fire.

Precautions to be taken while working in confined spaces

• Proper ventilation and air quality testing

• Use of personal protective equipment

• Proper lighting and communication equipment

• Training and certification for workers

• Emergency rescue plan in place

DCS systems in different plants are interconnected through various communication protocols.

• DCS systems use communication protocols like Modbus, Profibus, and Ethernet/IP to interconnect.

• Interconnection allows for data sharing and control between different plant areas.

• DCS systems can also be connected to other systems like SCADA and MES for higher-level control and monitoring.

• Interconnection can be achieved through wired or wireless communication depending on the plant's requi...read more

H2S is a colorless, flammable, and toxic gas with a strong odor of rotten eggs.

• H2S is highly flammable and can ignite easily

• It is toxic and can cause respiratory failure

• It has a distinctive odor of rotten eggs

• H2S is used in the production of sulfuric acid and in the petroleum industry

RA stands for Rheumatoid Arthritis, a chronic autoimmune disorder that affects joints and causes inflammation.

• RA is a type of arthritis that affects the joints symmetrically

• It is caused by the immune system attacking the body's own tissues

• Symptoms include joint pain, stiffness, and swelling

• Treatment options include medication, physical therapy, and surgery

HSE plays a crucial role in ensuring the safety and well-being of employees and the environment.

• HSE stands for Health, Safety, and Environment.

• It involves identifying and assessing potential hazards and implementing measures to control or eliminate them.

• HSE also includes training employees on safety procedures and emergency response plans.

• Examples of HSE measures include wearing personal protective equipment, conducting safety audits, and implementing environmental management...read more

There are four types of fire: Class A, Class B, Class C, and Class D.

• Class A fires involve ordinary combustibles such as wood, paper, or cloth.

• Class B fires involve flammable liquids or gases such as gasoline, oil, or propane.

• Class C fires involve electrical equipment such as appliances, wiring, or circuit breakers.

• Class D fires involve combustible metals such as magnesium, titanium, or sodium.

There are different types of fire extinguishers for different types of fires.

• Water extinguishers for Class A fires (wood, paper, cloth, etc.)

• CO2 extinguishers for Class B and C fires (flammable liquids and electrical fires)

• Dry chemical extinguishers for Class A, B, and C fires

• Foam extinguishers for Class A and B fires

• Wet chemical extinguishers for Class K fires (cooking oils and fats)

Foxboro iA series DCS is a distributed control system used in industrial automation.

• It is designed for process automation and control in industries such as oil and gas, power, and chemical.

• It offers advanced control strategies and algorithms for optimizing process performance.

• It includes a range of hardware and software components, including controllers, I/O modules, and engineering tools.

• It supports various communication protocols and can integrate with other systems and dev...read more

Siemens, GE Fanuc, and Allen Bradley PLCs are programmable logic controllers used in industrial automation.

• Siemens PLCs are known for their high processing speed and advanced communication capabilities.

• GE Fanuc PLCs are known for their flexibility and ability to handle complex applications.

• Allen Bradley PLCs are known for their user-friendly programming software and extensive support network.

• All three PLCs offer a range of features including digital and analog I/O, motion con...read more

The business model for the coming day energy solution should focus on utilizing renewable resources in the most cost-effective way.

• Identify the most viable renewable resources available in the region

• Analyze the cost of implementing and maintaining the infrastructure for utilizing these resources

• Develop a pricing strategy that is competitive with traditional energy sources

• Consider government incentives and regulations that may impact the business model

• Collaborate with energy p...read more

Hazards in the plant and their control

• Chemical hazards: Proper storage and handling of hazardous chemicals

• Electrical hazards: Regular inspection and maintenance of electrical equipment

• Mechanical hazards: Implementation of safety guards and procedures

• Fire hazards: Installation of fire detection and suppression systems

• Ergonomic hazards: Providing ergonomic workstations and equipment

• Noise hazards: Use of hearing protection and noise control measures

Crude oil is separated from water through a process called oil-water separation.

• Oil-water separation is achieved by using various techniques such as gravity separation, centrifugation, and filtration.

• Gravity separation involves allowing the mixture of crude oil and water to settle, with the oil rising to the top due to its lower density.

• Centrifugation utilizes the centrifugal force to separate the oil and water by spinning the mixture at high speeds.

• Filtration involves passin...read more

Yes, I have worked with Vibration Monitoring Systems.

• I have experience in installing and configuring vibration monitoring systems.

• I have conducted regular inspections and maintenance of vibration monitoring equipment.

• I have analyzed vibration data to identify potential issues and recommend corrective actions.

• I have worked with various types of vibration sensors and transducers.

• I have collaborated with other engineers and technicians to troubleshoot vibration-related problems....read more

Spanning Tree Protocol (STP) is a network protocol that prevents loops in a network topology.

• STP is used to prevent broadcast storms caused by loops in a network.

• It works by selecting a root bridge and disabling redundant paths to prevent loops.

• STP is implemented in switches and bridges in a network.

• It is defined in IEEE 802.1D standard.

• STP has several variants such as Rapid STP (RSTP) and Multiple STP (MSTP).

Yes, it is comfortable to transfer all over INDIA.

• As an electrical engineer, I am trained to work in various locations.

• I am adaptable and can easily adjust to different environments and cultures.

• I have experience working on projects in different states of India.

• I am willing to travel and relocate as required for the job.

Different types of valves used in industries include gate valves, globe valves, ball valves, butterfly valves, and check valves.

• Gate valves: used to control the flow of liquids or gases by opening or closing the gate.

• Globe valves: used to regulate flow in a pipeline, with a globe-shaped body and a movable plug.

• Ball valves: have a spherical closure unit to control flow, commonly used in high-pressure applications.

• Butterfly valves: have a disc that rotates to regulate flow, oft...read more

Triconex PLC is a safety instrumented system used in critical applications.

• Triconex PLC is designed for high availability and fault tolerance.

• It uses triple modular redundancy (TMR) architecture to ensure safety and reliability.

• It has a wide range of input/output modules and communication options.

• It is used in industries such as oil and gas, chemical, and power generation.

• It has features such as diagnostics, testing, and maintenance tools for easy troubleshooting.

• It is compli...read more

Interacting systems have feedback loops and can influence each other's behavior, while non-interacting systems operate independently.

• Interacting systems have mutual dependencies and can affect each other's inputs, outputs, or behavior.

• Non-interacting systems operate independently and do not have any influence on each other.

• Interacting systems often involve feedback loops where the output of one system affects the input of another.

• Non-interacting systems can be considered as s...read more

Electromagnetic flowmeter measures flow rate by using Faraday's law of electromagnetic induction.

• Electromagnetic flowmeter is based on the principle of Faraday's law of electromagnetic induction.

• It consists of a flow tube, electrodes, and a magnetic field.

• When a conductive fluid flows through the flow tube, it generates a voltage proportional to the flow rate.

• The electrodes detect the voltage and the magnetic field ensures the fluid is perpendicular to the magnetic lines of f...read more

Permits required for production engineering

• Building permits for construction and modification of production facilities

• Environmental permits for compliance with regulations on emissions and waste management

• Operating permits for the operation of specific equipment or processes

• Safety permits for ensuring workplace safety and adherence to safety standards

• Export permits for exporting products to other countries

• Import permits for importing raw materials or equipment

• Permits for haza...read more