Hotel Service Unit 20 Other subjects Q5 Answer

  1. State the purpose of infra red photography, explaining where it could be used as part of a condition monitoring programme.(10)

Purpose of Infra-Red Photography (5 marks)

  1. Detects abnormal heat patterns – identifies hot spots not visible to the naked eye.
  2. Locates overheating in electrical equipment – shows loose connections, overloads, or failing insulation.
  3. Monitors machinery condition – identifies abnormal bearing, motor, or pump heating.
  4. Assesses thermal insulation – detects heat leakage from tanks, boilers, and accommodation spaces.
  5. Non-intrusive testing – allows monitoring while machinery is operating, avoiding downtime.

Where it can be used in a Condition Monitoring Programme (5 marks)

  1. Main switchboards and electrical panels – to find overloaded circuits, loose terminations, or faulty breakers.
  2. Motors and generators – check for overheating windings or bearings.
  3. Pumps and compressors – monitor bearing and casing temperatures.
  4. Shaft bearings and couplings – identify frictional heating before failure.
  5. Boilers, steam lines, and thermal insulation – locate leaks, poor lagging, or blockages.