Scottish JIB



Qualified and certified by SELECT (Scottish Electrical Trade Association), registered with the S.J.I.B as a Qualified Electrician and holding a current health and safety passport with the CSCS/ECA.

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Telephone: 01779 488001
Mob: 07817 493579

Microwave Testing

As part of our services provided, we offer a Microwave oven leakage testing service to complement out Portable Appliance Testing. This can be carried out at the same time as the Portable Appliance Testing or at a separate time to suit.

Microwave TestingMicrowave testing - passFail

Microwave Testing - picture of plasmaAs microwaves are used usually on a daily basis, after a period of time, the door seals can become faulty causing leakage levels that exceed the recommended limit.

What are the health issues of Microwave exposure?

Exposure to very high levels of microwave radiation can result in significant amounts of energy being absorbed by the body. Just as with food, this energy is transformed into heat. Sensitive body parts such as the eyes and brain are not able to get rid of the extra heat that may build up. Prolonged exposure to microwave radiation has been known to cause cataracts, birth defects, certain cancers and can lead to other serious health problems.

How safe are Microwave Ovens?

Microwaves generated in microwave ovens cease to exist once the electrical power to the magnetron is turned off (like visible light from light globes). They do not remain in the food when the power is turned off. Neither can they make the food or the oven radioactive. Therefore, food cooked in a microwave oven is not a radiation hazard.

All microwave ovens have at least two safety interlock switches which stop the generation of microwaves immediately the door is opened. The design of modern microwave ovens is such that the microwaves should be contained within the oven, but it is still possible for some leakage to occur around the doors of certain microwave ovens. Generally, the required design of oven doors should restrict this leakage to a level well below of that recommended.

The Standard specifies a test to assess the level of microwave leakage and states that 'The microwave leakage at any point 50 millimetres or more from the external surface of the appliance shall not exceed 50 watts per square metre'. This Standard applies to ovens designed for domestic applications, even if used in a workplace. The recommended limit is conservative and includes significant safety factors.

Surveys by organisations providing testing services have shown that microwave oven leakage levels in excess of the recommended limits are rare and an oven in good condition and used correctly is safe. If an oven appears damaged, it should not be used until a suitably experienced technician has tested the oven and checked that the leakage does not exceed the recommended limit. Routine testing of microwave oven leakage is also considered necessary.

We use the latest calibrated detection units to check the radiation levels are acceptable as well as checking the door seals to make sure that there is no damage.

We can also check the power output to make sure the microwave is operating properly so food and drink are cooked throughout.

The appliance will then be labelled appropriately with the necessary data, stating that the microwave emissions fall within the current recommended acceptable radiation leakage for microwaves which at present is 5mW/cm2.

Last Updated (Friday, 22 October 2010 17:41)