BS ISO 20816-2:2017适用于陆上燃气轮机、蒸汽轮机和发电机（无论 与燃气轮机和/或蒸汽轮机耦合），输出功率大于40 MW，液膜轴承 额定转速为1500转/分、1800转/分、3000转/分或3600转/分。本标准 文件适用于燃气轮机、蒸汽轮机和发电机（包括 同步离合器）。本文件规定了评估事故严重性的规定 以下为现场宽带振动:a）所有主轴承座或底座的结构振动，径向（即横向）测量至 轴；b） 轴向测量推力轴承箱的结构振动；c） 在主轴承处或靠近主轴承的轴径向（即横向）旋转轴的振动。这些措施包括: 正常稳态工况下的振动；发生瞬态变化时的其他（非稳态）条件下的振动， 包括升程或降程、初始荷载和荷载变化；正常稳态运行期间可能发生的振动变化。交叉引用:ISO 20816-1:2016ISO 13373ISO 20816-5ISO 21940-31:2013 ED1ISO 10816-3:2009 Ed 2ISO 2041:2009 Ed 3ISO 2954:2012ISO 3977-3:2004 Ed 2ISO 21940-12:2016ISO 7919-3:2009 Ed 2ISO 7919-4:2009ISO 10817-1:1998ISO 10816-4:2009ISO 5348:1998（R04）购买本文件时提供的所有当前修订版均包含在购买时。

BS ISO 20816-2:2017 is applicable to land-based gas turbines, steam turbines and generators (whether coupled with gas and/or steam turbines) with power outputs greater than 40 MW, fluid-film bearings and rated speeds of 1 500 r/min, 1 800 r/min, 3 000 r/min or 3 600 r/min. The criteria provided in this document can be applied to the vibration of the gas turbine, steam turbine and generator (including synchronizing clutches). This document establishes provisions for evaluating the severity of the following in-situ, broad-band vibration:a) structural vibration at all main bearing housings or pedestals measured radial (i.e. transverse) to the shaft axis;b) structural vibration at thrust bearing housings measured in the axial direction;c) vibration of rotating shafts radial (i.e. transverse) to the shaft axis at, or close to, the main bearings.These are in terms of the following:vibration under normal steady-state operating conditions;vibration during other (non-steady-state) conditions when transient changes are taking place, including run up or run down, initial loading and load changes;changes in vibration which can occur during normal steady-state operation.Cross References:ISO 20816-1:2016ISO 13373ISO 20816-5ISO 21940-31:2013 ED1ISO 10816-3:2009 Ed 2ISO 2041:2009 Ed 3ISO 2954:2012ISO 3977-3:2004 Ed 2ISO 21940-12:2016ISO 7919-3:2009 Ed 2ISO 7919-4:2009ISO 10817-1:1998ISO 10816-4:2009ISO 5348:1998 (R04)All current amendments available at time of purchase are included with the purchase of this document.