Larsen & Toubro Limited Senior EHS Officer Interview Questions and Answers

A work permit system is a formal written system used to control high-risk work activities to ensure safety of workers and the workplace.

• Work permit systems outline the procedures and requirements for carrying out specific high-risk tasks.

• They are used to assess risks, implement controls, and communicate safety measures to workers.

• Examples include hot work permits for welding, confined space entry permits, and electrica...read more

Confined space is an area that is not designed for continuous occupancy, has limited entry and exit points, and may have hazardous conditions.

• Confined spaces are typically small and enclosed, making it difficult to enter and exit.

• These spaces may have poor ventilation, limited lighting, or contain hazardous substances.

• Examples of confined spaces include storage tanks, silos, tunnels, and sewers.

Oxygen level in confined spaces should be monitored to ensure safety of workers.

• Oxygen levels in confined spaces should be maintained between 19.5% and 23.5%.

• Low oxygen levels can lead to dizziness, confusion, and even loss of consciousness.

• High oxygen levels can increase the risk of fire and explosion.

• Monitoring equipment such as oxygen meters should be used to regularly check oxygen levels in confined spaces.

QA focuses on preventing defects while QC focuses on identifying and fixing defects.

• QA is a process-oriented approach that ensures quality is built into the product from the beginning

• QC is a product-oriented approach that involves testing and inspecting the product to identify defects

• QA is proactive while QC is reactive

• QA involves continuous improvement while QC involves finding and fixing defects

• Examples of QA activit...read more

I chose the QC department because of my passion for ensuring quality and my attention to detail.

• I have always been meticulous and detail-oriented, which are essential qualities for a QC engineer.

• I enjoy the process of identifying and resolving quality issues to improve overall product performance.

• I find satisfaction in ensuring that products meet or exceed customer expectations.

• I believe that quality control plays a cr...read more

I investigate the root cause, propose corrective actions, and ensure implementation to prevent recurrence.

• Identify the root cause of the NCR

• Propose corrective actions to prevent recurrence

• Ensure implementation of corrective actions

• Document the NCR and corrective actions taken

• Communicate with relevant stakeholders

Soil and concrete strength testing involves several steps including sample collection, preparation, and testing.

• Collect soil and concrete samples from the site

• Prepare the samples for testing by drying and crushing them

• Perform compression tests on concrete samples to determine strength

• Perform triaxial or unconfined compression tests on soil samples to determine strength

• Record and analyze the test results to ensure compl

To convince a client representative on a critical situation, it is important to communicate effectively, provide evidence and solutions, and build trust.

• Listen actively to the client representative's concerns and understand their perspective.

• Clearly explain the critical situation, its impact, and potential risks.

• Present evidence such as test results, data analysis, or documentation to support your claims.

• Offer alternat...read more

Electrical panels can be used by various types of contractors.

• Electrical contractors are the most common type of contractors who use electrical panels.

• General contractors may also use electrical panels for specific projects.

• HVAC contractors may require electrical panels for their heating and cooling systems.

• Plumbing contractors may need electrical panels for water heaters or pumps.

• Fire protection contractors may use el...read more

Various types of MCBs are used in the panel.

• Type B MCB for general purpose circuits

• Type C MCB for circuits with inductive loads

• Type D MCB for circuits with high inrush currents

• Type K MCB for circuits with high inrush currents and motors

• Type Z MCB for circuits with DC components

• Type F MCB for circuits with sensitive equipment

• Type G MCB for circuits with surge protection

• Type L MCB for lighting circuits

AC current changes direction periodically while DC current flows in one direction only.

• AC current is used in household appliances while DC current is used in batteries and electronic devices.

• AC current can be easily transformed into different voltages using a transformer while DC current cannot.

• AC current is more dangerous to humans than DC current because it can cause muscle contractions.

• DC current is more efficient f...read more

Voltage is the measure of electric potential difference between two points in a circuit.

• Voltage is measured in volts (V).

• It is the force that drives electric current through a circuit.

• Voltage can be positive or negative depending on the direction of the current flow.

• A battery provides a voltage difference between its terminals to power a circuit.

• Voltage drop occurs when there is a decrease in voltage along a circuit du

The question is unclear. Please provide more context.

• Please provide more information about the fault.

• Are you asking about fault-finding techniques or the number of people required to find a fault?

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

Transformer safety parts include fuses, circuit breakers, and grounding systems.

• Fuses protect against overcurrent and short circuits.

• Circuit breakers protect against overloads and faults.

• Grounding systems prevent electrical shock and protect equipment.

• Other safety parts may include temperature sensors and pressure relief devices.

Capacitors are used to store and release electrical energy in circuits.

• Capacitors can filter out noise and stabilize voltage in power supplies.

• They can also be used in timing circuits and oscillators.

• Capacitors are commonly used in audio equipment to filter out unwanted frequencies.

• They can also be used in electric motors to improve power factor and efficiency.

• Capacitors are essential components in electronic devices a

A sun t relay is a type of time-delay relay used in electrical systems.

• It is used to control the operation of a circuit based on a time delay.

• It is commonly used in lighting systems to delay turning on or off.

• It can also be used in motor control circuits to prevent damage from sudden power surges.

• The delay time can be adjusted to suit the specific needs of the circuit.

• It works by using a small current to charge a capac...read more

Under voltage can cause major electrical problems.

• Under voltage can cause equipment damage and failure.

• It can also lead to power outages and disruptions.

• Proper monitoring and maintenance can prevent under voltage issues.

• Examples of under voltage problems include brownouts and voltage sags.