Questions - Static Equipment Interview

Galling is a severe form of adhesive wear that occurs when stainless steel or aluminum bolts are tightened. The oxide layer shears off, allowing bare metal-to-metal contact. Friction generates heat, welding microscopic high spots. The bolt seizes and shears off. Prevention: Use anti-seize lubricant (Nickel-based for high temp, Copper-based for normal), or use coated studs (PTFE or Xylan).

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This code specifically governs vessels operating at internal or external pressures exceeding 10,000 psi (70 MPa). It involves specialized design methodologies like autofrettage and wire-wound vessels. Q2: What is the difference between Joint Efficiency ( ) and Radiography Testing (RT) in ASME Sec VIII Div 1?

A demister is a mesh pad (knitted wire or vane pack) located at the top of a column or separator. Its job is to remove liquid droplets from the gas/vapor stream before the gas exits the nozzle. If it fails, you get "liquid carry-over" into the overhead line, which can destroy a downstream compressor. static equipment interview questions

Sample answer: "To ensure the safe operation of static equipment, it is essential to follow proper operating procedures, perform regular maintenance and inspections, and ensure that the equipment is designed and installed correctly. Additionally, operators should be properly trained and equipped with personal protective equipment (PPE)."

These answers prove you are an engineer, not just a technician. Galling is a severe form of adhesive wear

Tube stakes are small metal rods driven into the baffle holes to prevent tube vibration. In a shell-and-tube exchanger, fluid cross-flow can cause vortex shedding, making tubes vibrate. If they vibrate enough, they wear against the baffles (fretting fatigue) until they rupture. Stakes lock the tubes in position at the baffle.

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Joint efficiency is a numerical value (ranging from 0.70 to 1.00) used in design formulas to reduce the allowable stress of the material, accounting for the potential presence of welding defects. The value depends entirely on the degree of non-destructive examination (NDE) performed on the welded joints:

What Non-Destructive Testing (NDT) methods are used on static equipment?