Audit & Survey Services

Audit & Survey Services

We ensure electrical equipment used are suitable and appropriately certified for the relevant area as required by laws, regulations and standards developed in most countries. Equipment used in wrong hazardous zones may potentially cause explosions that might harm people and damage property. Our surveyors are well-experienced and certified, having completed jobs in many parts of the world and placing customers’ minds at ease.

Our Services

  • Ex Hazardous Area & Registry Survey and Rectification Works
  • Infrared Thermography Inspection Survey
  • Lighting/LUX Survey and Audible Noise Survey
  • Power Quality Measurement/ Harmonic Survey
  • Ultra Sound Survey – Partial Discharged/ Gas Leak Detection /Motor Bearing
  • Vibration Survey

Ex Hazardous Area Survey and Rectifications

Megawatts has a team of CompEx certified and experienced inspectors. Ex Survey is a process where all electrical equipment installed in a potentially hazardous area are subjected to three grades of inspection – Visual, Close and Detailed. It will be carried out either as an initial, periodic or sample inspection.

All electrical equipment is inspected, detail recorded and tagged to form the assets, known as “Hazardous Area Equipment Register” (HAER).

  • Ex Audit is performed to verify if there are any deficiencies in information accuracy.
  • Remedial actions are provided in compliance with the minimum International Standards
  • Up-to-date documentation including any modification records, of the following items shall be available:
    • a. zone classification of areas and, if included, the equipment protection level (EPL) required for each location (see IEC 60079-10-1 and IEC 60079-10-2),
    • b. for gases: equipment group (IIA, IIB or IIC) and temperature class requirements,
    • c. for dusts: equipment group (IIIA, IIIB or IIIC) and maximum surface temperature requirements,
    • d. equipment characteristics e.g. temperature ratings, type of protection, IP rating, corrosion resistance,
    • e. records sufficient to enable the explosion protected equipment to be maintained in accordance with its type of protection (see IEC 60079-14), (for example list and location of equipment, spares, certificates, technical information),
    • f. copies of previous inspection records,
    • g. copy of the additional initial inspection records as detailed in IEC 60079-14.

Requirements for other documentation that may be necessary are provided in IEC 60079-14 and IEC 60079-19:

  • Inspection report provided on both registry & defects listings, analysis and recommendation
  • Provides Ex-Rectification works

Infrared Thermography Inspection Survey

Megawatts provides a team of certified thermographers who are experienced in conducting thermography inspection surveys, putting customers’ minds at ease.

Thermography survey is a condition-monitoring preventative maintenance and process monitoring application that determines faults. Potential applications include:

  • Inspection of electrical equipment
  • Inspection of mechanical equipment
  • Inspection of refractory lined structures

We focus on electrical applications thermography inspection where faults in electrical installation often appear as “hot-spots” that can be detected by the Thermal Imager. Hot spots are often the result of increased resistance in a circuit, overloading, or insulation failure.

This inspection method is based on the fact that most components in a system show an increase in temperature when malfunctioning. The increase in temperature in an electrical circuit could be due to loose connections or a worn bearing in the case of mechanical equipment. By observing the heat patterns in operational system components, faults can be located, and their gravity evaluated.

Frequent periodic thermography survey is best to be conducted under full operational conditions and hence. there should be no loss of production with advantages of:

  • The survey is an important preventive measure to avoid untimely shutdown of equipment, enhancing the health of the equipment life
  • Helps to reduce production downtime
  • Plant repairs could be scheduled accordingly to the report of equipment faults identified at the most convenient time.
  • Quality of repair work can be inspected
  • Commonly inspected components are: Relays Insulators Capacitors Switches

The thermography inspection processing system provides a report writing facility. This may be used to provide a hardcopy record of the thermal image accompanied by an imported photograph and any other information for reference purposes such as hotspot analysis and recommendation.