[labnetwork] Toxic Gas Monitoring Systems

[Fouad Karouta]

Hi Jerry,

 

At our facility we have gas monitoring using sensors from Bionics (Cl2,
BCl3, SiH4, NH3, flammables). All sensors are monitored by a home built
monitoring cabinet based on a quite flexible software that we kept adapting
to meet our needs. All sensors have two levels of alarm: 

1-      Alarm 1: just give a warning at the local level (monitoring cabinet)

2-      Alarm 2: here we differentiate between sensors in open area towards
sensors in exhaust ducting. The open lab sensors will trigger a general
alarm: sirens, shutting down all gases, evacuation and alert fire Dept;
while the exhaust detectors will initiate shutting down the corresponding
gas and the system using it, shutting the exhaust fan plus a local alarm at
the monitoring cabinet level/lab. 

 

Before taking my actual position in Australia I worked at Technical
University Eindhoven where an 800m2 clean room was built in 2000-2002 with
also Bionics sensors used to monitor gases like AsH3, PH3, SiH4, NH3, Cl2,
flammables. Bionics did deliver a complete system with the interfacing
computer that controls all sensors. 

 

We get the sensors calibrated twice by representatives of Bionics in
Australia.

 

Kind regards,

Fouad Karouta

 

*********************************

Facility Manager ANFF ACT Node

Research School of Physics and Engineering

Australian National University

ACT 0200, Canberra, Australia

Tel: + 61 2 6125 7174

Mob: + 61 451 046 412

Email: fouad.karouta at anu.edu.au

 

From: labnetwork-bounces at mtl.mit.edu [mailto:labnetwork-bounces at mtl.mit.edu]
On Behalf Of Bowser, Jerry
Sent: Thursday, 9 August 2012 3:14 AM
To: 'labnetwork at mtl.mit.edu'
Subject: [labnetwork] Toxic Gas Monitoring Systems

 

Hello All,

 

I wanted to survey the group for information regarding the type and brands
of toxic gas monitoring control systems in use.  

 

Here at the CNST, we use various gas sensors (about 55) connected to a
custom PLC based system that is just about at capacity.  If a gas is
detected, the system shuts down gas cabinets, sounds alarms, and alerts our
fire department.  The major shortfall of the system is that the detection
level can be read at the sensor in the detection zone but is not displayed
at the control interface.  

 

Before we decide on upgrading or replacing our control system, I thought I
would see what others are currently using.  Thanks for your input.

 

Jerry

 

 

 

*******************************************

Jerry Bowser

NanoFab Operations Group

Center for Nanoscale Science and Technology

National Institute of Standards and Technology

Phone: (301) 975-8187

 

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