DIN EN 15446-2008 工业区共有的易排放和扩散的物质.设备和管道泄露产生的蒸汽中易排放物的测量
Fugitive and diffuse emissions of common concern to industry sectors - Measurement of fugitive emission of vapours generating from equipment and piping leaks; English version of DIN EN 15446:2008-04
This standard applies to the measurement of fugitive emissions of volatile organic compounds (VOCs) from
process equipment. The leak sources include, but are not limited to, valves, flanges and other connections,
pressure relief devices, process drains, open-ended valves, pump and compressor seal systems, agitator
seals, and access door seals. It does not apply to instrument tubing connections.
This standard applies to all products of which at least 20 % by weight has a vapour pressure higher than 0,3
kPa at 20 ~C. For the petroleum industry, this includes all light products and excludes kerosene and all heavier
products.
The standard is based on the measurement of the gas concentration at the interface of a leak. This
concentration is measured with a portable instrument. It is converted to a mass emission rate by use of a set
of correlations. The scope of this standard includes the complete data processing, from the initial
concentration measurement up to the generation of an emission report over a reporting period (which is
generally one year)1).
This standard does not prescribe the number of potential emission points that should be screened each year
nor the frequency at which these points should be screened. This sampling strategy shall indeed take into
account the plant characteristics and the required level of control over fugitive emissions.
Optical methods are currently under development to ease the detection of leaks in plants and use of this
standard in conjunction with these methods might be possible. In any case, measurements have to be
performed according to the requirements of this standard. To enable direct quantification of total fugitive
emissions based only on these methods, a subsequent revision of this standard will be needed.