In the oil and gas industry, workforce safety is on top of everything around the world. Keeping the workforce connected and informed is the key to a safe and efficient workplace. Hytera Communications Solution for the oil and gas industries covers the upstream, midstream, and downstream sectors to empower the whole process with safety control and efficient productivity.
What is Intrinsic Safety
Intrinsic safety (IS) is a protection technique for safe operation of electrical equipment in hazardous areas by limiting the energy, electrical and thermal, available for ignition. Areas with dangerous concentrations of flammable gases or dust are found in applications such as petrochemical refineries and mines. As a discipline, it is an application of inherent safety in instrumentation. High-power circuits such as electric motors or lighting cannot use intrinsic safety methods for protection. All the radios, audio accessories and third party sensors that integrate with Hytera solutions are IS certified to meet the safety requirements of a working environment.
Meeting the Standards
Standards for intrinsic protection are mainly developed by IEC (International Electrotechnical Commission) but different agencies also develop standards for intrinsic safety. Examples of such agencies in North America are the Factory Mutual Research Corporation (FM Global), which certifies radios, Underwriters Laboratories (UL) that certifies mobile phones, and in Canada the Canadian Standards Association. In Europe, the standard for intrinsic safety certification is the CENELEC standard EN 60079-11 which is part of the ATEXdirective(ATEX), while in other countries around the world the IEC standards (IECEx) are followed.
Hytera's explosion-proof radios has been certified by most of the rigorous standards in the world including ATEX, IECEX, FM, UL, CSA of Canada and TIIS of Japan.
The First ‘ia’ Certified Radios
Hytera PD712IS and PD792IS terminals are the first DMR handsets in the world to achieve ‘ia’ classification, the strictest level of intrinsically safe protection available, whilst the PT790Ex was the first TETRA device to achieve ‘ia’ standard. The ‘ia’ certification means the radio circuit has three protective measures, allowing for the occurrence of two faults during operation without risking user safety. This means it can be used in Intrinsically Safe Zones 0, 1 and 2 areas. Other ATEX radios are ‘ib’ certified for use in Intrinsically Safe Zones 1 and 2 areas only.
The ‘ia’ certification is a demanding one to meet, but Hytera has become the first, and so far only, PMR manufacturer to produce ATEX radios to this toughest of standards. The PD712IS and PD792IS DMR radios meet the following IS certifications: Ex ia IIC T3Ga; Ex ia IIIC T160C; and Ex ia I.
Hytera IS certified radios have an array of practical features that can ensure workforce safety and protection.
The built-in GNSS (Global Navigation Satellite System) module in the radio supports mainstream positioning systems in the world like GPS. Its tracking sensitivity is up to -164dBm while the accuracy can be within 2 meters. Man Down enables the radio to automatically send out alert signal to other workforces in the field if a radio user falls down. Similarly, Lone Worker allows the radio’s emergency function to be automatically triggered if no radio activity is performed for a predefined time.