Friday, November 29, 2013

Electrical Commissioning Checklists


The acceptance testing and subsequent commissioning of is a critical and important step in the start of any electrical system, regardless of the size of the system or project. A lack of experience in handling this process or poor planning and execution can lead to avoidable delays and compromise security of personnel, which can cause potential productivity losses or adversely impact the credibility and reputation of project management function, all of which can have costly financial implications. Acceptance testing and commissioning of electrical systems is an elaborate and tedious process that has to be carried out very diligently and with extreme caution (given the nature of job). To facilitate the above, an electrical commissioning checklist can be used, which is an easily referenced list of to-do activities that can act as a handy and practical tool for ensuring completion of the work, as desired.

Electrical Commissioning Checklists

General Checks

General checks before commissioning a system include ensuring that all related electrical works are complete; staff and all the maintenance personnel are adequately informed and trained in operating and security measures; all fire safety precautions have been taken; and that emergency procedures are well documented and understood by required staff.

Electrical Checks

As regards the electrical appliances and systems deployed, it is prudent to ensure that all required electrical safety guidelines have been followed; that sufficient precautions have been taken to avoid exposing to conducting liquids; all subsystems and appliances operate as expected (are not faulty or have electrical leakage); high voltage equipment is adequately labeled; that all circuit breakers are installed and inspected; and that accessibility is sufficiently restricted but easily available through facilities management when required and as applicable.

Further checks should ascertain that the electrical power leads are protected from strain or physical damage; working areas are free from un-insulated cabling or tripping hazards because of unattended, loose or coiled wiring; and that the power boards have overload protection and proper grounding. Checks on power points should be done for determining that they are easily locatable and not obstructed in any manner; are properly labeled and in good condition; total power load within prescribed limits; that the high current items are not plugged onto power boards (they should rather be directly plugged into power points); and that the permanent appliances have their own dedicated power points.

Outside Checks

Outdoor checks should ensure that safety procedures are in place for working near overhead power lines; that the site is suitable for the electrical system installation and operation; and that only heavy duty power leads are used.





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