SRF Junior Engineer - Maintenance Interview Questions, Process, and Tips

Parameters checked in installation of reactor mech seal include alignment, clearance, pressure, and temperature.

• Alignment of the seal with the shaft and other components is crucial for proper functioning.

• Clearance between the seal faces should be within specified limits to prevent leakage.

• Pressure conditions should be monitored to ensure the seal can withstand the operating conditions.

• Temperature limits should be consi...read more

Glass line thickness can be checked using ultrasonic thickness gauges.

• Ultrasonic thickness gauges use high-frequency sound waves to measure the thickness of materials.

• The gauge is placed on the glass surface and sends sound waves through the glass.

• The time taken for the sound waves to bounce back is measured and used to calculate the thickness of the glass.

• The thickness can be compared to the required specifications to...read more

SS304 and SS316 are both stainless steel alloys, but with different compositions and properties.

• SS304 contains 18% chromium and 8% nickel, while SS316 contains 16% chromium, 10% nickel, and 2% molybdenum.

• SS316 is more resistant to corrosion and pitting than SS304, especially in chloride environments.

• SS316 is also more expensive than SS304.

• SS304 is commonly used in food processing equipment, while SS316 is used in marin

An ejector system is used to create a vacuum by using a high-pressure fluid to entrain a low-pressure fluid.

• The ejector system consists of a motive fluid nozzle, a suction chamber, and a diffuser.

• The motive fluid is usually steam or compressed air.

• The suction chamber is where the low-pressure fluid is entrained and mixed with the motive fluid.

• The diffuser is where the mixed fluid expands and the pressure decreases, cre...read more

NPSH is the Net Positive Suction Head required to avoid cavitation in a pump. It can be checked using a formula or a graph.

• NPSH is the minimum pressure required at the suction side of the pump to avoid cavitation.

• It is calculated using the formula NPSH = (P1 - P2)/ρg - h1 - h2, where P1 is the pressure at the pump suction, P2 is the vapor pressure of the fluid, ρ is the fluid density, g is the acceleration due to gravi...read more

Spark testing can be checked by using a spark tester to measure the strength and consistency of the spark.

• Use a spark tester to check the strength and consistency of the spark

• Ensure that the spark is strong and consistent across all cylinders

• Check for any irregularities or abnormalities in the spark pattern

• Compare the results to manufacturer specifications

• Make any necessary adjustments or repairs to improve the spark p