Rallis India Production Supervisor Interview Questions and Answers

STAR interview was difficult to understand the open ended questions

Q1. Safety & process
Ans. PSM SAFETY MANAGEMENT PROCESS PARAMETERS UTILITY PARAMETERS
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Q2. LD50 defination
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Q3. Utility lines provided in the reactor it's pressure
Ans. 
The utility lines provided in the reactor are pressurized.
• Utility lines in the reactor are typically pressurized to ensure efficient flow of materials.

• Pressure in the utility lines is controlled and monitored to maintain optimal operation.

• Examples of utility lines in a reactor include steam lines, cooling water lines, and gas supply lines.
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Q4. Previous company process &how handling troubleshooting
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Q1. They shows the confidence level & your skill at the time of trouble shooting
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Q1. What is the ph
Ans. 
pH is a measure of the acidity or alkalinity of a substance on a scale of 0 to 14.
• pH stands for 'potential of Hydrogen'

• A pH of 7 is considered neutral, below 7 is acidic, and above 7 is alkaline

• Examples of pH levels: Battery acid (pH 1), Lemon juice (pH 2), Pure water (pH 7), Baking soda (pH 9)
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Q2. What is strong alkali
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Strong alkali refers to a substance with a high pH level that can cause severe burns and irritation to skin and eyes.
• Strong alkalis have a pH level above 10

• They are highly corrosive and can cause severe burns on contact with skin

• Examples include sodium hydroxide (caustic soda) and potassium hydroxide
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Q1. Self introduction.
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Q2. What is cavitation.
Ans. 
Cavitation is the formation and collapse of vapor bubbles in a liquid due to pressure changes.
• Occurs in pumps, propellers, and other fluid machinery

• Can cause damage to equipment and decrease efficiency

• Can be prevented by proper design and maintenance

• Examples include erosion of propeller blades and damage to pump impellers
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Q3. Stream esterification.
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Q4. What is Threshold limit value
Ans. 
Threshold limit value is the maximum concentration of a substance that a worker can be exposed to without adverse effects.
• TLV is a term used in occupational health and safety

• It is the maximum level of exposure to a hazardous substance

• TLVs are set by organizations like ACGIH and OSHA

• Examples of TLVs include 8-hour time-weighted averages for chemicals like benzene and carbon monoxide
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Q5. What flash point.
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Flash point is the lowest temperature at which a substance can vaporize to form an ignitable mixture in air.
• Flash point is important in determining the safety of handling and storing flammable substances.

• It is measured using various methods such as Pensky-Martens closed cup tester and Abel closed cup tester.

• For example, gasoline has a flash point of -45°C, while diesel has a flash point of 52°C.

• A substance with a low f...read more
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Q6. Co-Current and Co- Counter Flow
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Q7. Bernoulli machanism
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Q1. Related to process
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Q2. Like process reaction safety questions
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Q3. LEL UEL THRESHOLD VALUE
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Q4. Related to reactors pumps
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Q5. Related to dcs quation if you have experience in dcs
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Q6. What is dcs and it’s functioning
Ans. 
DCS stands for Distributed Control System, which is a computerized control system used to control and monitor industrial processes.
• DCS is used in industries such as oil and gas, power generation, and manufacturing.

• It consists of multiple control units distributed throughout a plant or facility.

• DCS allows for centralized control and monitoring of various processes, making it easier to manage complex systems.

• It typically...read more
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Q7. Process parameters and related to its
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