Skip to main content

ISO 20816-2:2017

Current Date published:

Mechanical vibration — Measurement and evaluation of machine vibration — Part 2: Land-based gas turbines, steam turbines and generators in excess of 40 MW, with fluid-film bearings and rated speeds of 1 500 r/min, 1 800 r/min, 3 000 r/min and 3 600 r/min

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 ISO 20816-2:2017 can be applied to the vibration of the gas turbine, steam turbine and generator (including synchronizing clutches). ISO 20816-2:2017 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.

ISO 20816-2:2017 is not applicable to the following:

i) electromagnetic excited vibration with twice line frequency at the generator stator windings, core and housing;

ii) aero-derivative gas turbines (including gas turbines with dynamic properties similar to those of aero-derivatives);

NOTE ISO 3977‑3 defines aero-derivatives as aircraft propulsion gas generators adapted to drive mechanical, electrical or marine propulsion equipment. Large differences exist between heavy-duty and aero-derivative gas turbines, for example, in casing flexibility, bearing design, rotor-to-stator mass ratio and mounting structure. Different criteria, therefore, apply for these two turbine types.

iii) steam turbines and/or generators with outputs less than or equal to 40 MW or with rated speeds other than 1 500 r/min, 1 800 r/min, 3 000 r/min or 3 600 r/min (although generators seldom fall into this latter category) (see ISO 7919‑3 and ISO 10816‑3);

iv) gas turbines with outputs less than or equal to 40 MW or with rated speeds other than 1 500 r/min, 1 800 r/min, 3 000 r/min or 3 600 r/min (see ISO 7919‑3 or ISO 7919‑4 and ISO 10816‑3 or ISO 10816‑4);

v) the evaluation of combustion vibration but does not preclude monitoring of combustion vibration.

Get this standard Prices exclude GST
PDF ( Single user document)
$185.62 NZD
HardCopy
$185.62 NZD
Networkable PDF
Price varies
Preview only close
Prev {{ page }}/ {{ numPages }} Next
Preview only close
Prev {{ page }}/ {{ numPages }} Next
Pages: 23

Keep me up-to-date

Sign up to receive updates when there are changes to this standard

Related Information

Similar Standards

  • AS/NZS 3010:2017


    Electrical installations - Generating sets

  • AS/NZS 3010:2017 A1


    Electrical Installations - Generating Sets

  • BS 5228-2:2009+A1:2014

    Code of practice for noise and vibration control on construction and open sites, Vibration

  • BS 6140-2:1982

    Test equipment for generating vibration., Methods of describing characteristics of auxiliary tables for test equipment for generating vibration

Preview only close
Prev {{ page }}/ {{ numPages }} Next
Preview only close
Prev {{ page }}/ {{ numPages }} Next
Pages: 23

ISO 20816-2:2017

Get this standard Prices exclude GST
PDF ( Single user document)
$185.62 NZD
HardCopy
$185.62 NZD
Networkable PDF
Price varies

Request to add this standard to your subscription

ISO 20816-2:2017

Price varies
Online library subscription

Click "Send request for subscription" to request for your Account Administrator to add this standard to your subscripiton.

Cancel