Summary:

The terms flameproof means that the item to which they refer will be constructed in such a way that an internal ignition of a flammable atmosphere will not be transmitted outside of the enclosure, thereby preventing the ignition of surrounding flammables. Flameproof is a preferred method of protection when the electrical equipment may potentially have high energy arcing or sparking components in normal operation and therefore the formation of an explosion when in a hazardous atmosphere is not easily avoided.

Solution:

The equipment is simply contained in a heavy protective enclosure, usually made of die cast steel. If heat or sparks from faulty equipment within the enclosure ignite flammable gas present with it the resulting explosion is contained within the enclosure.

The cabling of any system employing ATEX or ICEX Exd. certified equipment e.g. E2S Ltd. BEX series sounders or GNEX series xenon beacon, must use suitably rated and mechanically protected cable. The cable must be terminated using Exd certified cable glands and junction boxes. The glands and junction boxes must be certified Exd by BASEEFA, SIRA or similar recognised authority to the same level as the field equipment.

Although there are few restrictions on the type of cable used in IS circuits   all cables have inductance and capacitance, and hence energy storage capabilities, thus they can affect system safety. The capacitance and inductance values of a given cable should be readily available from the cable manufacturer. In addition the capacitance and inductance values of the field mounted devices such as IS sounders and smoke detectors, must also be taken into account, again the values should be readily available from the manufacturer Consequently the system design imposes restrictions on the amount of each of these parameters. A great deal has been written on this subject but only rarely is there a serious limitation placed on the available cable.

The cabling must conform to the following requirements

1. Protection from mechanical damage
2. Protection from chemical attack e.g. acids etc.
3. Be securely fixed
4. Have a minimum conductor size of 0.017mm2
5. Must withstand 500V insulation test
6. Circuit voltage must not exceed 60V

We have provided the Flame Proof System for Tank Level Control, two pumps controls are present in the Panel. These controls are helped for filling up the tank. The either one of the pumps can be selected and switched ON, a level sensor is present in the Tank. When the tank is filled 100% the pump switches OFF automatically.