Severn Trent and ANT Telecom have a long-standing relationship which began in 1995 when ANT Telecom deployed a radio paging-based system for Severn Trent’s Trimpley treatment site. The relationship has advanced over the years, to include the development and maintenance of an integrated lone worker solution for many of Severn Trent sites. With Severn Trent operating at a number of locations with intermittent mobile coverage, the company turned to ANT once more, to deploy a more advanced communication solution to improve efficiency and safety at its sites.
Vicky Del Busso, contracts manager at Severn Trent, comments: “We have a number of workers at our sites that operate underground in basements, draw off tunnels and pipe galleries – environments that can pose a risk to staff. Moreover, as some of these employees are also working alone, they can often be the only person on site and so ensuring their safety is absolutely paramount.”
The lack of mobile coverage across some of Severn Trent’s clean water, water production and sewage sites presented several challenges. The first and most important being the health and safety aspect, as there was no way of reporting an emergency incident, which was particularly concerning for lone workers operating on site. Secondly, operators were unable to communicate with colleagues whilst working in those areas, and crucially couldn’t respond to critical alerts flagged up by their SCADA alarm management solution as there was no way to get these messages to the operators who needed to respond to them due to the poor mobile coverage.
Furthermore, since plant access is heavily restricted and many sites run by a single or a small number of operators, suppliers would often be unable to gain entry to the site until operators returned back to the control room, causing significant site inefficiencies, as well as additional re-delivery costs, when suppliers were left waiting at the access gate.
ANT Telecom recommended upgrading to a dedicated digital radio platform combined with repeaters, transceivers and digital lone worker radios. After understanding the key problem for Severn Trent sites was a lack of Wi-Fi and mobile coverage, this was said to be the best solution.
The radio systems have been implemented across a number of Severn Trent’s sites since 2018, rising to 15 sites in total, come the start of 2020. The radio solution provides site wide radio coverage, enabling operators to communicate between themselves and the control centre whilst workers carry out tasks in all areas of the site.
ANT’s Critical Alarm Management solution also provides integration with Severn Trent’s SCADA alarm system – meaning that operators receive critical alarms irrespective of where they are on-site. Therefore, if any pumps or critical assets fail, the system will immediately alert the operators directly on their radio handsets so that they are aware of any issues.
If operators have an accident when working alone, they can alert colleagues by radioing for help or pressing their panic button on their radio. If an incident occurs and they’re rendered unconscious, colleagues are automatically alerted when the radio’s tilt sensor is activated to ensure that help arrives as quickly as possible. GPS location also enables the response team to locate the operator without the need to search any large areas.
Additionally, the radio solution has a mechanism to integrate with Severn Trent’s gate access control system, so operators can speak with suppliers or those wishing to gain access at the gate and allow or deny them entry – directly on their radio handset.
Del Busso continues: “We had full confidence that ANT Telecom would deliver the best possible bespoke solution to fully upgrade our safety and communication technology and associated processes and now, our workers can feel assured of their safety whilst also benefiting from streamlined communication abilities.”