Thursday, 26 October 2017

OH&S Requirement for testing electrical/ electronic equipment



OH&S regulation for the it industry

The purpose of the OHSR is to promote occupational health and safety and to protect workers and other persons present at workplaces from work-related risks to their health, safety, and well-being. Compliance with the requirements provides the basis on which workers and employers, in cooperation, can solve workplace health and safety problems. The requirements are not an end in themselves, but are a foundation upon which to build an effective health and safety program.

Type of measuring devices for testing equipment and devices

The testing equipment used to detect faults in the operation of electronic devices by creating stimulus signals and capture responses from electronic devices under test is known as electronic test equipment. If any faults are detected, then identified faults can be traced an rectified using electronic testing equipment. Most often all electrical and electronic circuits are tested and troubleshooted to detect faults or abnormal functioning.

Type of measuring devices

Voltmeters
Ohmmeter
Ammeters
Multimeters

how to test equipment

The periodic inspection and testing of portable electrical equipment is commonly known as “test and tag”. The University guideline for test and tag allows for risk assessment of a device, it’s environment and use to adjust the period between inspections. The process of physically inspecting equipment is just as important as the electrical test performed with an insulation tester and it is encouraged that all staff pay attention to their equipment for signs of physical or chemical damage. If there is any doubt as to the integrity of the device, or if there appears to be parts missing (such as guards), remove the item from service and contact an electrician.

Type of risk of not using measuring device correctly

Voltmeter
 are important because that are safety equipment.  A voltmeter with an incorrect indication increases the risk of electrocution.  If a voltmeter fails in service, an arcing fault can be the result.  In fact, many injuries do occur because of voltmeter failures.  Voltmeters are more important than some other safety devices because exposure to electrical injury exists in every instance.  Therefore, you should keep voltmeters in a safe place and protect them from damage.

Ohmmeter
Be certain the circuit is deenergized and discharged before connecting an ohmmeter. Do not apply power to a circuit while measuring resistance.

Ammeter
The low resistance ammeter makes the effective resistance of the circuit very low and so the current is very big.  The ammeter actually shorts out the component it's trying to measure the current through.
This can damage the ammeter because a very big current flows in it.
Multimeters

How to check calibration of device
Set the multimeter to the highest resistance range by turning the dial to the highest "ohm" setting. Touch the test probes of your digital multimeter together. The digital display of the multimeter should  read "0 ohms."

Reference


The University of Queensland Occupational Health & Safety Division Home Page. (n.d.). Retrieved November 22, 2017, from http://www.uq.edu.au/ohs/electrical-safety



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