jwilsonimp
Electrical
- Jun 16, 2003
- 2
Hi, I have a doubt about the considerations that we should take to define the level of integrity. We have a station of compression of natural gas
to which place him a system of detection of gas and fire with sensor type UV/IR and audible and visible alarms, a system of emergency closing it was
also placed so much with valves on-off type ball to the entrance as well as to the exit of the station, one has a PLC certified by TUV for SIL-2, the
detail is that the system is semiautomatic, that is to say, it depends on the operator of the station (human factor) to make the decision of acting
the blockade system by means of a push-button. Is the controversy, Placing transmitters of pressure (sensors) does one even have the grade of
integrity SIL-2 and when the decision of operating the system continues being for the operator? The systems of security SIL embraces those
semiautomatic ones (operated by human factor)? The detection system and alarms don't have connection of any type with the blockade system, they are
separate.
Thanks!
Jesús Wilson
to which place him a system of detection of gas and fire with sensor type UV/IR and audible and visible alarms, a system of emergency closing it was
also placed so much with valves on-off type ball to the entrance as well as to the exit of the station, one has a PLC certified by TUV for SIL-2, the
detail is that the system is semiautomatic, that is to say, it depends on the operator of the station (human factor) to make the decision of acting
the blockade system by means of a push-button. Is the controversy, Placing transmitters of pressure (sensors) does one even have the grade of
integrity SIL-2 and when the decision of operating the system continues being for the operator? The systems of security SIL embraces those
semiautomatic ones (operated by human factor)? The detection system and alarms don't have connection of any type with the blockade system, they are
separate.
Thanks!
Jesús Wilson