{"id":4520,"date":"2019-04-01T13:12:24","date_gmt":"2019-04-01T11:12:24","guid":{"rendered":"https:\/\/www.msr-electronic.de\/2019\/04\/01\/extended-safety\/"},"modified":"2021-09-08T13:40:43","modified_gmt":"2021-09-08T11:40:43","slug":"extended-safety-for-garages-and-tunnels","status":"publish","type":"post","link":"https:\/\/staging.msr-electronic.de\/it\/2019\/04\/01\/extended-safety-for-garages-and-tunnels\/","title":{"rendered":"Extended safety for garages and tunnels"},"content":{"rendered":"

Certified monitoring system for ventilation and desmoking in garages and tunnels<\/h3>\n
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The EN 50545 as a central element of gas monitoring<\/a> in garages and tunnels demands a number of conditions for gas alarm systems. The gases CO, NO and NO2, to be monitored with the help of sensors, are herein defined. In addition to the type of warning message, SIL monitoring is also required for the EN 50271 as referred to in the EN 50545.<\/p>\n

(SIL (safety integrated level) is an index for the probabilities of failure of a functional system. It is specified in levels from 1-4, with 1 being the lowest level and level 3 being required only in most exceptional cases of gas detection technology.)<\/em><\/p>\n

MSR-Electronic<\/a>, however, with its guiding principle \u201eSafety First\u201c has found some safety gaps in the EN 50545 that have to be closed.<\/p>\n

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Warning devices<\/strong><\/h3>\n

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Even though warning devices are required and the ways in which they have to be present are defined, however, no monitoring of functionality is required. It may therefore be the case that a gas alarm stays undetected, because the warning devices failed, were disconnected or were destroyed unnoticed.<\/p>\n

This is where MSR-Electronic intervenes with its MSB2-ES module<\/strong>, which monitors the implemented warning devices for functionality and wire break even in the switched-off state and immediately sounds the alarm should one fail. Furthermore, the module is connected to the safe SIL2 bus in the system.<\/p>\n

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Ventilation<\/strong><\/h3>\n

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Another topic of the actuator technology are the ventilation control systems. These are currently not standardized and not functionally monitored. In addition, there is no requirement in EN 50545 for monitoring of the actuators in case of emergency.<\/p>\n

MSR-Electronic goes one step further with special motor control modules<\/strong> (MotorModules) that have secure SIL2 communication, are standardized and easy to install. So there is no need for PLC programming here. The modules only have to be parameterized in the central unit (MotorControlModules) via a predefined matrix and can thus be adapted to any type of motor. By standardizing the modules high wiring savings can be achieved in the switch cabinet, enabling considerable cost savings.<\/p>\n

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Fire alarm<\/strong><\/h3>\n

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Until now the transmission of fire alarms had to go the path of direct analog connection to the control systems. With the new MSR-Electronic fire detection modules<\/strong> (FireDetectionModules) the fire alarms from the zones can be collected and handled digitally by SIL2 communication and forwarded to and managed by the controllers.<\/p>\n

On the one hand the fire alarms can collectively be switched to a fire alarm module (FireDetectionModule). On the other hand also directly to the engine modules. This increases the flexibility in system design in a secure framework.<\/p>\n

In order to perfect the integration of the system, the fire brigade control panel for direct control of the ventilation system by the fire brigade, can be included with the tableau module (FireControlModule) into the secure system. Here, too, the transmission takes place via SIL2 certified communication, making it safe and reliable.<\/p>\n

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Garage ventilation system<\/strong><\/h3>\n

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For garages, MSR-Electronic differentiates between three main types<\/p>\n