Toxic Gas Detectors Systems

here in the US we follow or exceed the OSHA standards and the USEPA or other regulatory offices per state. I don't know where you are or if you have similar commissions. check it out. also you can't go wrong if you go on line and check our OSHA regs and follow them at the least.

It really would help if we knew some context, Industrial plants, (bhopal) Blast furnaces, refineries, chemical plants, near rail roads???? Office buildings? public spaces? On aircraft? near storage tanks? near process equipment? Near locker rooms/control rooms/ break rooms? Operator pulpits? Laboratories?

Also what is the toxic gas? Carbon Monoxide? Chlorine? ??? heavier than air and lighter than air are two simple physical properties that have significant influence over proper detector placement.

the following general info may be helpful:

http://indsci.com/docs/Press/PEN_0206.pdf

http://ezinearticles.com/?Gas-Monitors---Proper-Placement-Is-Key-to-Ensuring-Safety-of-Your-Industrial-Plant&id=1787343

In addition to OSHA, NFPA 720 for commercial bldgs;

http://ehstoday.com/fire_emergencyresponse/news/code_carbon_monoxide_commercial_1126/

UL 2304 for dwellings

http://www.csemag.com/article/CA6562630.html

Once you are up to speed on these articles and references, may I respectfully suggest that you engage a professional chemical or safety engineer to help you with this critical issue?

milo

Hello Milo,

Your answer is the difference between 'knowing' and having to find out!

GA.........To you my friend. Some useful sites there.

Post, my ursine neonate. Post.

Yes this little babybear is trying, sometimes sucessfully to help. Thank you for your kind words Milo.

Actually it's trying to imagine what someone someplace is trying to do and how can I best help them, given few clues...

Toxic gas is what they said, but what about a mere suffocant?

is the application industrial, commercial, etc?

Deployed against accidents, or possible terror strikes?

Thanks for the feedback!

milo

Hello Milo,

No problem on the feedback. I like to check out the intelligent post-ers, and after some jostling they usually come to some kind of consensus.

Not getting at this threads OP at all, but as you say this subject covers just about every sphere of life. Even something as seemingly 'innocent as the local swimming pool, where some pretty toxic chemicals are used. They can sometimes be taken for granted, and unless there is a strict regime it is all too easy to dose to high or too often.

With regard to the subject of this thread, It really should be more specific and tell us the specialised areas to be covered. It is too wide a subject for general advice.

I am also surprised there is not more posts to what is a fascinating subject?

Take care Milo, I will get out of your hair now!

Happy new year............

Hello Heita,

I welcome you.

And here is some standards details. You will have to do some reading to find out where the different situations say you should place your monitors and sensing equipment, but you should have enough info here to get you started OK?

Take care............

And, have a happy new year...................

ISA | Performance Requirements for Toxic Gas-Detection Instruments ... This Standard also provides minimum performance requirements of electrical ... of toxic gas content in air, in order to enhance the safety of personnel. ...
www.isa.org/Template.cfm?Section=Find_Standards&Template=/Ecommerce/ProductDisplay.cfm&ProductID=2943 - 23k - Cached - Similar pages

http://images.google.co.uk/imgres?imgurl=http://www.sierramonitor.com/_media/images/Basic_Sentry.gif&imgrefurl=http://www.sierramonitor.com/gas/sentry/sentry_gas_detection_system.php&usg=__DH-IuFu_Tv5SIScaeKp2awlWcCU=&h=330&w=450&sz=30&hl=en&start=8&tbnid=HmvBL5qgXn0amM:&tbnh=93&tbnw=127&prev=/images%3Fq%3Dstandard%2Bfor%2Bdesign%2Btoxic%2Bgas%2Bdetection%2Bsystems%26gbv%3D2%26hl%3Den%26sa%3DX

[PDF] Stanford Laboratory Standard & Design Guide Pressure Vessels ... File Format: PDF/Adobe Acrobat - View as HTML
Detection System. 7. A continuous gas detection system shall be provided for Class I and II toxic gases. regulated by Santa Clara County's Toxic Gas ...
www.stanford.edu/dept/EHS/prod/mainrencon/Labdesign/Section_1-3_Pressure_Vessel_and_Compressed_Gas_Cylinders.pdf - Similar pages

PIP PCCA001 Design of Combustible and Toxic Gas Detection Systems ... IHS - PIP PCCA001 Design of Combustible and Toxic Gas Detection Systems. ... [ Please Click Here for IHS Specs & Standards Product Information] ...
engineers.ihs.com/document/abstract/XVDVIBAAAAAAAAAA - 10k - Cached - Similar pages [PDF]

Chapter 25 – Combustible-Gas, Toxic-Gas, and Low-Oxygen Detection ... File Format: PDF/Adobe Acrobat - View as HTML
gas, and toxic-gas detection systems where there is a potential for ..... Use SB's evaluation to create a biddable detection system design for Procurement. ...
smad-ext.grc.nasa.gov/gso/manual/chapter_25.pdf - Similar pages

TS4000 Toxic Gas Monitoring System from General Monitors, Inc. Representing the next generation in toxic gas detection systems, the advanced ... System combines a highly intelligent microprocessor-based design with ...
www.globalspec.com/FeaturedProducts/Detail/TS4000_Toxic_Gas_Monitoring_System/35568/0 - 29k - Cached - Similar pages

Fire/Gas Detection System FM Certified To NFPA 72 from General ... The HazardWatch™ Integrated Fire & Gas Detection System from General Monitors sets a new industry standard for highly intelligent safety monitoring ...
www.globalspec.com/FeaturedProducts/Detail/GeneralMonitors/FireGas_Detection_System_FM_Certified_To_NFPA.../0 - 26k - Cached - Similar pages
More results from www.globalspec.com »

Toxic gas sensor - gas detector | gas sensor | pressure transducer ... The GD1 innovates by creating a new standard of toxic gas detection. ... The transmitter's sensor is the "sense of smell" of a fixed gas detection system. ...
www.directindustry.com/industrial-manufacturer/toxic-gas-sensor-71739.html - 113k - Cached - Similar pages

Honeywell Analytics - Toxic, Flammable and Combustible Gas ... Toxic, flammable and combustible gas detection systems from Honeywell ... First to set the standard for Open Path gas detection technology in the industry ...
www.hydrocarbons-technology.com/contractors/instrumentation/honeywell-analytics/ - 38k - Cached - Similar pages

13852 Hazardous Gas Handling & Detection File Format: PDF/Adobe Acrobat - View as HTML
hazard review if standard design guidelines and compliance with applicable codes / ... toxic or toxic gas supply lines related to the system being monitored. ...
www.ncsu.edu/facilities/con_guidelines/pdfs/13852_hazardous_gas_handling_detection.pdf - Similar pages

Hello all,

I am writing to apologise for my lengthy post on this thread. When I was compiling it yesterday, I was the only one here and did not check to see if anyone else had posted.

Happy new year............

Whats the harm?

The intent was to provide assistance.

And to protect others from harm.

Post, my ursine neonate. Post.

Its all good.

milo

I know nothing about toxic gas detection systems, but if I were designing one, the following would be my criteria.

• The sensor should be located within a certain radius of a potential source of gas.
• Each potential source of leakage, (valve, union, etc) should have it's own sensor.
• Each sensor should be identified as to location and fed into a computer.
• The computer would have a map of the system, showing the sensors and their location. In addition, the program would identify valves(I'm assuming a piping system) which should be closed to isolate the leak.
• Consideration to be given to the weight of the gas, either lighter/heavier than air.
• Consideration of air flow within the area.
• The monitor should be located in an area isolated from any source of toxic gas and hermatically sealed for safety.
• Suitable safety equipment(Masks, clothing, breathing apparatus) at key locations.
• Trained personnel to man the monitoring and action team.
• Once a leak is detected, the computer would automatically shut down any ventilation systems and fans and sound both a visual and sonic alarm.
• The computer should be on a UPS.

This is about all I can think of, but I'm sure someone more knowledgable than me will add to or modify this.

Hello ronseto,

hope you are fine?

You say you are not an expert in this field on Toxic Gases.............

You seem to have run off some thoughtful, carefully worked out ideas there!

GA......To you.......

Hello Heita,

I have just had a quick glance of the posts and there is not enough input from you to say "yes this is fine" or "no I do not mean that".

There is the following safety standards mentioned:

1) ASTM International

2) BSI British Standards Institute

3) OSHA Occupational Safety and Health Administration USA

4) EU-OSHA............European Agency for Safety and Health.

Which I have just found. Address below.

4) EU-OSHA - Welcome! — OSHA — European Agency for Safety and Health ...

European Agency for Safety and Health at Work (EU-OSHA) official Web Site.
osha.europa.eu/ - 52k - Cached - Similar pages I also have a question......... How can the semiconductors have been purchased? When you do not know where they have to go and cannot possible know the different kinds of sensor needed or the quantities of each sensor?.........Very odd that. Seems a little unprofessional to me, and, not to put to finer word on it, dangerous. You may not be responsible for fitting these safety devices, I do not know. But it sounds a pretty shoddy way of organising things.

Take care and happy new year.

As a manufacturer of toxic gas detection systems, we get asked this question a lot. Some guidelines to consider when installing gas detectors can be found at the following:

http://www.generalmonitors.com/customer_support/faq_general.html

Very helpful reply. GA.

Welcome to Cr4

milo