TEP Flange management

Max. acceptable hi-lo permitted on the flange alignment as per ASME PCC-1 is______

• 0.8 mm

• 1.5 mm

• 1 mm

• 0.5 mm

Max. permitted parallelism (difference between narrowest and widest gap) on the flange gap as per ASME PCC-1 is _____

• 0.5 mm

• 0.8 mm

• 1.5 mm

• No tolerance

Before start flange assembly, ________

• clean and examine flange
  and fastener contact surfaces
  

• remove all indications of the
  previous gasket installation from the gasket contact
  surfaces
  

• use approved solvents and/or soft-wire
  brushes
  

• Avoid using carbon steel brushes on stainless steel flanges
  

What type of flange tightening sequence is normally used in flange management?

• Legacy Cross-Pattern

• Clockwise pattern

• Alternative pattern

• Anti clockwise pattern

Proper alignment of all joint members in flange joint assembly will result in ________

• reduced friction between the nut and the flange.

• maximum
  sealing surface contact

• maximum opportunity for
  uniform and design-level gasket loading

• better protection of gasket surface from mechanical damage

Which of the following is/are proper method of gasket installation during flange assembly?

• Verify that the gasket complies with the dimensional (O.D., I.D., thickness) and material specifications
  

• Position the gasket to be concentric with the flange
  I.D
  

• No portion of the gasket should project into the flow path
  
  

• Ensure that the gasket will remain in place during
  the joint assembly process
  

What are the precautions to be taken when using adhesive on gasket during assembly process?

• avoid using unapproved adhesive type

• avoid adhesive chemistry
  that is incompatible with the process fluid
  

• use of adhesive is prohibited on gasket

• use thick layer of adhesive to ensure strong attachment of gasket to flange face.

Lubrication is used to ________

• improve the consistency of achieved load
  from bolt to bolt within the joint

• reduce the coefficient of friction

• provide less required torque to achieve a given
  tension

• aid in the subsequent disassembly of the fasteners.

Bolted joint assemblies should be tested to ensure leak
tightness. Items to be established in procedure by owner are _______

• the type of leak test (e.g., visual, bubble-forming
  solution, sniffer)

• test fluid (e.g., air, inert gas, water, service fluid)

• test pressure (e.g., low pressure or up to a code mandated visual inspection pressure)

• acceptance criteria (often simply “no detectable
  leaks”)

During disassembly, why should a sufficient number of loosened nuts be left in
place until all tension has been relieved?

• to ease gasket removal

• to guard against
  falling components, pipe spring, or other unanticipated
  movement

• to protect from pressure splash

• to ensure that flange does not create a pinching point hazard