Refractory Engineer

Refractory Engineer Interview Questions and Answers

Updated 29 Dec 2023

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Q1. Tell me one of name of licensor of any equipment or unit in oil and gas industry?

Ans.

One of the licensors of equipment or units in the oil and gas industry is Honeywell UOP.

  • Honeywell UOP is a leading licensor of refining, petrochemical, and gas processing technologies.

  • They provide a wide range of equipment and units such as catalysts, adsorbents, reactors, and process systems.

  • Their technologies help in improving efficiency, reducing emissions, and maximizing production in the oil and gas industry.

  • Other licensors in the industry include TechnipFMC, Shell Globa...read more

Q2. What is hand casting, hand packing, gunning, ramming method of refractory application?

Ans.

Hand casting, hand packing, gunning, and ramming are methods of applying refractory materials manually.

  • Hand casting involves pouring refractory material into a mold by hand.

  • Hand packing involves manually placing refractory material into a mold or around a structure.

  • Gunning involves spraying refractory material onto a surface using a high-pressure gun.

  • Ramming involves manually compacting refractory material into a mold or around a structure using a ramming tool.

  • These methods a...read more

Refractory Engineer Interview Questions and Answers for Freshers

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Q3. Tell me the types of Refractory used in oil and gas industry

Ans.

Refractories used in oil and gas industry include fireclay, high alumina, silica, and magnesite.

  • Fireclay refractories are used for lining furnaces and boilers.

  • High alumina refractories are used for high temperature applications such as cracking units.

  • Silica refractories are used for acid resistance in chemical processing units.

  • Magnesite refractories are used for lining basic oxygen furnaces and converters.

  • Other refractories used in the industry include zirconia, chromite, and...read more

Q4. What are components used in Refractory material?

Ans.

Refractory materials are made up of various components such as oxides, carbides, nitrides, and borides.

  • Common oxides used include alumina, magnesia, and silica

  • Carbides such as silicon carbide and boron carbide are also used

  • Nitrides like silicon nitride and boron nitride are used for high-temperature applications

  • Borides like zirconium diboride and hafnium diboride are used for extreme conditions

  • Other components like graphite, chromite, and mullite may also be used

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Q5. How many types of Binder, additives retaders use in Refractory with it's usages percentage it's reaction after using why using where to using and it's properties, etc.

Ans.

Various types of binders, additives, and retarders are used in refractories for different purposes.

  • Binders like clay, cement, and colloidal silica are used to hold refractory materials together.

  • Additives like plasticizers, deflocculants, and antioxidants are used to improve workability and performance.

  • Retarders like borax and boric acid are used to slow down the setting time of refractory mixes.

  • Examples include using colloidal silica as a binder in high temperature applicatio...read more

Q6. Tell us about permit system in oil and gas plant

Ans.

Permit system in oil and gas plant is a safety procedure to control hazardous activities.

  • Permit system ensures that all hazardous activities are authorized and controlled.

  • It involves obtaining permits before starting any work that may pose a risk to personnel, equipment, or the environment.

  • Permits are issued after a thorough risk assessment and safety checks.

  • Examples of permits include hot work permit, confined space entry permit, and excavation permit.

  • The permit system is an...read more

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Q7. What is BD, CCS, PLC ?

Ans.

BD stands for Bulk Density, CCS stands for Cold Crushing Strength, and PLC stands for Permanent Linear Change.

  • BD is the mass per unit volume of a refractory material.

  • CCS is the ability of a refractory material to withstand compressive loads at room temperature.

  • PLC is the change in length of a refractory material after being fired at high temperatures.

  • These properties are important in determining the suitability of a refractory material for a particular application.

Q8. What is abrasion resistant lining?

Ans.

Abrasion resistant lining is a protective layer that prevents wear and tear caused by friction and impact.

  • It is commonly used in industrial equipment and machinery to prolong their lifespan.

  • Materials used for abrasion resistant lining include ceramics, rubber, and polymers.

  • Examples of equipment that use abrasion resistant lining are chutes, hoppers, and conveyor belts.

  • The thickness and type of lining used depend on the severity of the abrasion and the type of material being h...read more

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Q9. What is grit blasting?

Ans.

Grit blasting is a process of cleaning or preparing a surface by propelling abrasive materials at high pressure.

  • It is commonly used in industrial settings to remove rust, paint, or other coatings from metal surfaces.

  • The abrasive materials used can vary depending on the surface being treated and the desired outcome.

  • Grit blasting can also be used to create a rough surface texture for better adhesion of coatings or paints.

  • It is important to wear protective gear, such as a respir...read more

Q10. What is short criting?

Ans.

Short criting is a process of removing impurities from refractory materials.

  • Short criting involves heating the refractory material to a high temperature in a reducing atmosphere.

  • This process helps to remove any impurities or volatile substances that may be present in the material.

  • Short criting is an important step in the manufacturing of high-quality refractory materials.

  • Examples of refractory materials that undergo short criting include alumina, zirconia, and silicon carbide...read more

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