Belt Inspection and Condition Monitoring (stopped)

Purpose:

 

  • Belt Inspection and Condition Monitoring (stopped)

  • To measure and analyze defects and their consequences on the belt conveyor in the stationary condition.
  • The inspection can be a simple walk-by or a specific inspection requiring tools and knowledge but must be carried out on a regular basis
  • Walk-by inspections can be done by any personnel, but specific inspections generally require maintenance skills

 

 

Description:

 

Belt

  • The belt is inspected unloaded to check defects, damage or clogging. The check is extensive, (100% length). The splices are checked with particular attention. The belt must be started to ensure the length on the return idlers is also in good condition.
  • The belt is checked for cleanliness
  • The belt is checked for alignment (vacant space on the outer rollers) in the different areas, the misaligned areas are registered. Belt alignment is checked on all pulleys
  • The belt is checked for wear, with a straight edge on a pulley for example. Look  for root causes
  • Check belt hardness, register it in appropriated file and monitor progress The use of a shoremeter is easy and helpful to determine the evolution of belt hardness, which increased as the belt becomes older and more brittle.

Pulleys

  • Check for cracks
  • Check for wear, straightness or bevel is checked accordance to the design
  • Lagging is checked for clogging, defect, damage
  • Brightness of metallic surface give a good indication of the working area. It should be centered and not much wider than the belt width.
  • All bearings must be checked

Idlers

  • Presence and fixation of rollers is checked
  • All idlers that were detected to make noise or not turning during the running inspection are checked/replaced
  • Belt aligning idlers are checked to be free of movement. Skewed idlers are checked to be in the right direction
  • Brightness of metallic surfaces give a good indication of the working area. It should be centered and not much wider then than the belt width.
  • Check rollers for build up, particularly return idlers. Analyze root cause
  • Remove spillage piles below return idlers. Analyze origin

Chutes

  • Inspect for spillage, determine root cause, mark and register source location
  • Check alignment of chute to the belt conveyor
  • Check skirting presence, wear, position, material presence between skirt/belt/wear liners
  • Check for stability, fixation
  • Check internally for built-up, and wear

Take up

  • Clearance of automatic take-up is checked
  • Parallelism and clearance in the guiding system is checked
  • Is free of material (increased weight), remove if present
  • Drum is checked as a pulley (see above)

Cleaning device

  • Check presence, wear (straightness and remaining material), position and efficiency
  • Check attachment carefully, review tension according to design
  • Check for buildup, remove if present
  • Check for movement depending type

Structure and surrounding

  • Covers, safety protection devices (siren or flash at start-up) are present, spillages or foreign objects are removed, housekeeping from previous maintenance works
  • Check straightness, deformation, bending of the structure
  • Check for corrosion, paint presence…

Drive

  • Check oil level, sample and analysis depending needs, fixation, cleanliness, guards presence and fixation.
  • Check connection to electrical ground
  • Check operation of sensors and interlocks

 

 

  • Check attachment carefully, review tension according to design
  • Check for buildup, remove if present
  • Check for movement depending type

Structure and surrounding

  • Covers, safety protection devices (siren or flash at start-up) are present, spillages or foreign objects are removed, housekeeping from previous maintenance works
  • Check straightness, deformation, bending of the structure
  • Check for corrosion, paint presence…

Drive

  • Check oil level, sample and analysis depending needs, fixation, cleanliness, guards presence and fixation.
  • Check connection to electrical ground
  • Check operation of sensors and interlocks

 

Standards:
  • Inspection sheets and schedules
Impact if not correct:

 

  • Breakdown and operational problems
Actions:

 

  • Training and organization
Unit Completion:
  • Carry out  inspection of a belt system

See site specific unit for additional information, respective actions and applicable safety instructions.

 

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