ISA 92.00.02

This standard gives guidance on, and recommended practice for,the selection, installation, use and maintenance of electricallyoperated equipment intended for use in industrial and commercialsafety applications for the detection and measurement of toxicgases complying with the requirements of ANSI / ISA-92.00.01 andISA-92.00.04.

This standard is a compilation of practical knowledge to assistthe user, and applies to equipment, instruments and systems thatindicate the presence of a toxic mixture of gas or vapor with airby using an electrical signal from a gas sensor to produce a meterreading, to activate a visual or audible pre-set alarm or otherdevice, or any combination of these.

Such equipment may be used as a means of reducing the riskwhenever there is the possibility of a risk to life or heal thspecifically due to the accumulation of a toxic gas-air mixture, byproviding such warnings. It may also be used to initiate specificsafety precautions (e.g. plant shutdown, evacuation,ventilation).

This can be applied to all new permanent installations and,where reasonably practicable, to existing permanent installations.It is also applicable to temporary installations, whether new orexisting.

Similarly it is applicable to the safe use of portable ortransportable equipment, irrespective of the age or complexity ofsuch equipment. Since much modern equipment of this type alsoincludes other types of gas detection, some additional guidance isgiven for these topics.

NOTE Equipment intended for use in hazardous (classified) areasshould be Listed or Labeled for use within the intended area. Forfixed equipment, installation should be in accordance with theNational Electrical Code, ANSI/NFPA 70.

For the purposes of this standard, except where specificallystated otherwise, toxic gases shall include toxic vapors.

For the purposes of this standard, equipment includes

a) fixed equipment;

b) transportable equipment, and

c) portable equipment.

This standard is not intended to cover, but may provide usefulinformation, for the following:

a) equipment of laboratory or scientific type intended only foranalysis or measurement purposes;

b) equipment intended for underground mining applications (groupI equipment);

c) equipment intended only for process control applications;

d) equipment intended for applications in explosives processingand manufacture;

e) equipment intended for the detection of a potentially toxicatmosphere resulting from dust or mist in air.

Edition:

13

Published:

09/30/2013

ANSI:

ANSI Approved

Number of Pages:

74

File Size:

1 file , 1.1 MB