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In a computer class it is forbidden:
• to make room re-planning with derogation from requirements of existing structural rules and rules;
• to apply nonstandard (self-made) warmers for the purpose of heating;
• to use electro tiles, boilers, electric kettles, electro irons;
• to wrap up electric lamps paper, a matter and other combustible materials;
• to apply to illumination of a suppository, oil lamps and lamps,
• to include in one socket some potent consumers of the electric power.
In a computer class it is necessary to place only necessary for ensuring educational process devices, accessories, grants which have to be stored in cases, on racks.
Storage in an office of educational visual aids and educational inventory, carrying out experiences and other types of works which are not provided by the approved lists and programs is not allowed.
The computer class has to be surely equipped with primary fire extinguishing means. Manual fire extinguishers have to take place according to state standard specification 12.4.009-91 requirements:
• by a shot on vertical designs at the height no more than 1,5 m from floor level to the bottom end face of the fire extinguisher;
• by installation in fire cases together with fireplugs in express curbstones or on fire stands.
Fire extinguishers have to be installed so that the text of the instruction available on its housing on use was visible. Designs and external registration of curbstones and cases for placement of fire extinguishers have to allow to define visually type of the fire extinguishers installed in them. Fire extinguishers have to take place in readily available places where damage hit of direct beams on them and an atmospheric precipitation, immediate influence heating and warmers is excluded. For audit, repair or replacement it is impossible to send all fire extinguishers at once.
5.5.1 Safety requirements before a cut-in
The engineer of a computer class has to examine and be convinced of serviceability of inventory, electrical harness grounding. In case of detection of malfunctions not to get down to work. To report about it to the head of UIIK and only after debugging and obtaining permission of the head to get down to work.
The engineer of a computer class has to check illumination of student's workplaces and, if necessary, arrange to creation of conditions of normalization of illuminating intensity.
5.5.2 Safety requirements in operating time
It is forbidden to use a computer class as educational audience for classes in other subjects and for carrying out collecting.
Not to include inventory in the faulty socket, in operating time to watch, whether the electro fork is heated, whether a wholeness of an electro cord is broken.
Not to get down to work with the wet hands.
Not to leave the included inventory off-hand.
Not to put subjects on inventory and the display.
5.5.3 Safety requirements in the emergency cases
At ignition emergence immediately to disconnect inventory, to disconnect the power supply network except for a lighting network, to report about a fire to all working and to start suppression of the center of fire by available fire extinguishing means.
If on metal parts of inventory tension (feeling of current) is revealed, the grounding wire is torn off — to disconnect inventory immediately, to report on the head on malfunction of electric equipment and without its instruction not to get down to work.
At interruption in supply of the electric power to disconnect inventory.
At accident it is necessary to release the victim of an injuring factor first of all. ATTENTION: at release of the victim from action of a current watch that most not to appear in contact with current carrying part and alive.
5.5.4 Safety requirements upon termination of works
To disconnect inventory from the power supply network.
To order a workplace. Inventory arrangement in a computer class should not interfere with evacuation of people and approach to fire extinguishing means.
5.5.5 Accident prevention.
Workplace requirements.
- The monitor has to be established directly before the user and not demand turn of the head or a body housing.
- The desktop and seat have to have such height that level of eyes of the user was slightly above than the monitor center. It is necessary to look down on the screen of the monitor, and not the reverse. Even short-term work with the monitor installed too highly, leads to exhaustion of cervical departments of a backbone.
- The index of an blindness for sources of the common simulated irradiating at permanent job with computers has to be no more than 20, in administrative public places - no more than 40.
- It is necessary to limit non uniformity of distribution of brightness in sight of the user of VDT and PEVM, thus the ratio of brightness between effective areas should not exceed 3:1 - 5:1, and between effective areas and surfaces of walls and inventories - 10:1.
- The illuminating intensity ripple factor for workplaces with VDT and PEVM should not exceed 5%.
- The computer has at once two sources of an electromagnetic radiation (the monitor and the system unit).
- The PC user is deprived of opportunity to work at safe distance.
- The longtime of influence of the computer. For the modern users can make more than 12 clocks, at the official norms, forbidding to work at the computer more than 6 clocks in day
- Besides there are some secondary factors which aggravate a situation, it is possible to refer work to them in the close not aired room and concentration of a set of the personal computer in one place.
- The monitor, especially its lateral and back walls, is very potent source of EMI. And though more and more rigid norms limiting power of radiation of the monitor are accepted every year, it leads only to drawing the better protective coating on front part of the screen, and lateral and back panels all also remain potent sources of radiation.
Picture 5.3
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