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A Step by Step, For Setting Up The Computer Workstation

In order to be comfortable at your computer workstation the following steps should be used to ensure the workstation fits your needs. If you feel fatigue or start to experience muscle pain use this checklist to re-evaluate your workstation. Do not be afraid to adjust your workstation. Remember, prevention is the best cure for musculoskeletal injuries!

Adjusting Your Chair
 Raise or lower the chair until the edge of the seat pan is just below your knee cap when you are standing.(figure 12).
 Sit with your feet flat on the floor and your legs at a 90-110 degree angle(Figure13).
 Allow enough space for a closed fist between the edge of the seat pan and the back of your legs (Figure 13).


Adjust the backrest to support your lower back. You may need to move the backrest up or down as well as toward you (Figure 14)

Adjusting and Adjustable Working Surface

 Sit with your arms hanging straight at your side (Figure 15).
 Adjust the desk or keyboard tray to be level with your elbows (Figure 15).
 Raise your forearms to create a 90 degree angle at the elbow (Figure 16).

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Photocopier and Laser Printer Hazards

Photocopiers and Laser Printers are safe when used occasionally and serviced regularly. But if they are badly positioned, poorly maintenance and used frequently or for long runs, there are risks to health, ranging from irritated eyes, nose and throat to dermatitis, headaches, premature ageing and reproductive cancer hazards. Proper ventilation and maintenance are essential in eliminating hazards



The chemicals

Ozone and other chemicals can occur above the OEL (occupational exposure limit) when the copying room is small, ventilation is inadequate, and/or the photocopiers is used a lot.



Ozone

Ozone is a gas produced during the high voltage electrical discharge in photocopiers and laser printers. It is sweet smelling and highly toxic with a UK OES of 0.2 ppm (15 minute reference periods) if you can smell ozone the levels are too high. Ozone breaks down in air quite quickly though this can be slowed by high humidity, temperature and some effect of office furnishings. Health effects are eye, nose throat, and lung irritation, dermatitis, headache and nausea, premature ageing and potential reproductive dangers. Pruritus, a kind of itching occurs on the face, neck and areas of skin exposed to ozone. When mixed with nitrogen oxide in certain proportions it can have an effect on the central nervous system.

Volatile Organic Compounds (VOC)

VOCs also emitted during photocopying. These can contain traces of decane ( carcinogenic)1,1,1-trichloroethane (can cause skin irritation), iso-octane, toluene( causes fatique, drowsiness, throat and eye irritation, xylene ( can cause menstrual disorder and kidney failure) and benzene (carcinogenic and teratogenic)

Selenium and Cadmium Sulphide

Some copiers used drum impregnated with selenium or cadmium sulphide. The gas emitted from these materials especially when hot can cause throat irritation and sensitization (I,e adverse reaction to very tiny quantities of chemical) to exposed workers. Short term exposure to high levels of selenium by ingestion causes nausea, vomiting, skin rashes and rhinitis. The UK MEL for selenium compounds is 0.1 mg/m3 ( ACGIH is 0.2 mg/m3). This is more a risk to maintenance staff when cleaning or grinding the surface of the drum. Cadmium compounds have a MEL of 0.025 mg/m3 (over a 8 hour reference period) and ACGIH is 0.002 mg/m3.

Nitrogen oxide

Nitrogen oxide may be produced when there is a spark in electrostatic photocopiers. Symptoms are similar to those produced by carbon monoxide. The OEL is 25 ppm

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