Description of BS ISO 20816-8:2018 2018
This document establishes procedures and guidelines for the measurement and
classification of mechanical vibration of reciprocating compressor systems. The
vibration values are defined primarily to classify the vibration of the compressor
system and to avoid fatigue problems with parts in the reciprocating compressor
system, i.e. foundation, compressor, dampers, piping and auxiliary equipment mounted
on the compressor system. Shaft vibration is not considered.
This document applies to reciprocating compressors mounted on rigid foundations with
typical rotational speed ratings in the range 120Â r/min up to and including
1Â 800Â r/min. The general evaluation criteria which are presented relate to
operational measurements. The criteria are also used to ensure that machine
vibration does not adversely affect the equipment directly mounted on the machine,
e.g. pulsation dampers and the pipe system.
NOTE The general guidelines presented in this document can also be applied to
reciprocating compressors outside the specified speed range but different
evaluation criteria might be appropriate in this case.
The machinery driving the reciprocating compressor, however, is evaluated in
accordance with the appropriate part of ISOÂ 10816, ISOÂ 20816
or other relevant standards and classification for the intended duty. Drivers are
not included in this document.
It is recognized that the evaluation criteria might only have limited application
when considering the effects of internal machine components, e.g. problems
associated with valves, pistons and piston rings might be unlikely to be detected in
the measurements. Identification of such problems can require investigative
diagnostic techniques which are outside the scope of this document.
Examples of reciprocating compressor systems covered by this document are
-
horizontal, vertical, V-, W- and L-type compressor systems,
-
constant and variable speed compressors,
-
compressors driven by electric motors, gas and diesel engines, steam
turbines, with or without a gearbox, flexible or rigid coupling, and
-
dry running and lubricated reciprocating compressors.
This document does not apply to hyper compressors.
The guidelines are not intended for condition monitoring purposes. Noise is also
outside the scope of this document.
About BSI
BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.