20+ QPe India Interview Questions and Answers

Checkpoints during installation of reactor mechanical seal

• Alignment of seal faces

• Proper installation of seal support system

• Correct torque applied to bolts

• Verification of seal flush system

• Inspection of seal faces for damage or defects

• Testing of seal for leakage

• Documentation of installation process

Mechanical seals are of two types - balanced and unbalanced. The difference lies in the design and application.

• Balanced mechanical seals have a secondary seal that balances the pressure on both sides of the seal faces, reducing the risk of leakage and wear.

• Unbalanced mechanical seals do not have a secondary seal and rely on the pressure difference between the seal faces to maintain the seal.

• Balanced seals are used in high-pressure applications, while unbalanced seals are used...read more

Kalrez o-rings can withstand temperatures up to 327°C while PTFE o-rings can handle temperatures up to 260°C.

• Kalrez o-rings have a higher temperature range than PTFE o-rings

• Kalrez o-rings can handle temperatures up to 327°C

• PTFE o-rings can handle temperatures up to 260°C

Safety measures on site to reduce incidents

• Conduct regular safety training for all workers

• Ensure all workers wear appropriate personal protective equipment (PPE)

• Implement a hazard communication program to inform workers of potential hazards

• Regularly inspect and maintain equipment to ensure it is in good working condition

• Establish emergency response procedures and conduct drills

• Provide adequate lighting and signage to ensure safe movement around the site

• Ensure proper storage a...read more

The washing area door should open towards the outside to prevent contamination and improve air circulation.

• Opening the door towards the outside prevents contamination from entering the washing area.

• It also improves air circulation and reduces humidity levels, which can be critical parameters for some processes.

• Universal solute is not relevant to the washing area door orientation.

Installation of glass lined and hydrogenation reactors requires careful planning and execution.

• Ensure proper site preparation and foundation design

• Follow manufacturer's instructions for assembly and installation

• Use appropriate lifting equipment and safety measures

• Ensure proper sealing and insulation

• Test for leaks and pressure before use

Nitrosamines are impurities that can form in products due to chemical reactions involving amines and nitrites.

• Nitrosamines are a class of chemical compounds that contain a nitroso group (-NO) bonded to an amine group (-NH2).

• They can form in products such as pharmaceuticals, cosmetics, and food during manufacturing, storage, or processing.

• The formation of nitrosamines typically requires the presence of amines and nitrites, which can react under certain conditions.

• Scientific ju...read more

HAZOP focuses on identifying potential hazards in a process, while HIRA assesses risks associated with those hazards. Severity refers to the potential impact of a hazard, while risk combines the likelihood and severity of a hazard.

• HAZOP (Hazard and Operability Study) is a structured technique used to identify potential hazards in a process plant.

• HIRA (Hazard Identification and Risk Assessment) is a process that assesses the risks associated with identified hazards.

• Severity re...read more

Agitators are devices used to mix or stir liquids. There are various types of agitators used in different industries.

• Types of agitators include paddle, turbine, anchor, propeller, and magnetic agitators

• Paddle agitators are used for low viscosity fluids, while turbine agitators are used for high viscosity fluids

• Anchor agitators are used for viscous materials that tend to stick to the walls of the container

• Propeller agitators are used for mixing liquids with low viscosity and h...read more

Vacuum pumps are devices that remove gas molecules from a sealed volume to create a partial vacuum.

• Positive displacement pumps (rotary vane, piston, diaphragm)

• Momentum transfer pumps (turbomolecular, molecular drag)

• Entrapment pumps (cryogenic, ion, getter)

I have experience working in the pharmaceutical industry with a focus on drug production and quality control.

• Worked in pharmaceutical companies producing a range of drugs for various medical conditions

• Experience in ensuring compliance with regulatory standards such as FDA guidelines

• Involved in the production and testing of pharmaceutical products to ensure quality and efficacy

Various types of oils are used in pumps depending on the application and operating conditions.

• Mineral oil is commonly used for general purpose applications.

• Synthetic oil is used for high temperature and high pressure applications.

• Food grade oil is used in pumps that handle food products.

• Fire-resistant oil is used in pumps that operate in high-risk areas.

• Biodegradable oil is used in pumps that operate in environmentally sensitive areas.

• Viscosity of oil should be selected based...read more

Conductivity can be measured by using a conductivity meter or by performing a conductivity test.

• Conductivity can be measured by determining the ability of a substance to conduct electric current.

• A conductivity meter is a device that measures the electrical conductivity of a solution.

• The conductivity of a substance is typically measured in siemens per meter (S/m) or microsiemens per centimeter (µS/cm).

• Conductivity tests can also be performed using a conductivity bridge or by m...read more

Proportional Integral Derivative controller

• PID controller is a control loop feedback mechanism used in systems to control the output based on the error between the desired setpoint and the actual process value.

• The three terms in PID stand for Proportional, Integral, and Derivative. Proportional term responds to the current error, Integral term integrates the error over time, and Derivative term predicts future error trends.

• Example: In a temperature control system, a PID contr...read more

Accuracy is the degree of closeness of a measured or calculated value to its true value.

• Accuracy is a measure of how close a measurement is to the true value.

• It is often expressed as a percentage or a ratio.

• For example, if a scale is accurate to within 0.1 grams, it means that the measured weight is within 0.1 grams of the true weight.

Thermocouples are temperature sensors that use the principle of thermoelectric effect.

• Thermocouples are made of two different metals joined together.

• They generate a voltage proportional to the temperature difference between the two junctions.

• Common types include Type K, Type J, Type T, and Type E thermocouples.

• Type K thermocouples are widely used and can measure temperatures up to 1,372°C.

• Type J thermocouples are suitable for lower temperature ranges, up to 760°C.

• Type T therm...read more

Chemical engineering offers a unique blend of chemistry, physics, and math to solve real-world problems.

• Chemical engineering involves designing and optimizing chemical processes for large-scale production.

• It combines principles of chemistry, physics, and math to develop new materials and products.

• Chemical engineers work in a variety of industries, including pharmaceuticals, energy, and food production.

• They are responsible for ensuring the safety and efficiency of chemical pro...read more

Pagination is handled by dividing data into smaller chunks and loading them as needed.

• Divide data into smaller chunks

• Load data as needed

• Use APIs like UITableView and UICollectionView

• Implement infinite scrolling

• Use page numbers or cursor-based pagination

A 3 wire RTD is a type of resistance temperature detector that uses three wires for accurate temperature measurement.

• A 3 wire RTD is commonly used in industrial applications for temperature sensing.

• It provides more accurate measurements compared to 2 wire RTDs.

• The three wires are used to compensate for the resistance of the connecting wires.

• The resistance of the third wire is equal to the sum of the resistances of the other two wires.

• This configuration helps eliminate errors ...read more

My area of interest is artificial intelligence and machine learning.

• I enjoy exploring the latest advancements in AI and ML.

• I have experience working with neural networks and deep learning algorithms.

• I am interested in the potential applications of AI and ML in various industries, such as healthcare and finance.