(Rev.1) Acceptance Criteria of Mechanical Vibration (ISO 10816-3:2009)

ISO 10816 consists of the following parts, under the general title Mechanical vibration — Evaluation of machine vibration by measurements on non-rotating parts:

— Part 1: General guidelines

— Part 2: Land-based steam turbines and generators in excess of 50 MW with normal operating speeds of 1500 r/min, 1800 r/min, 3000 r/min and 3600 r/min

— Part 3: Industrial machines with nominal power above 15 kW and nominal speeds between 120 r/min and 15 000 r/min when measured in situ

— Part 4: Gas turbine sets with fluid-film bearings

— Part 5: Machine sets in hydraulic power generating and pumping plants

— Part 6: Reciprocating machines with power ratings above 100 kW

— Part 7: Rotodynamic pumps for industrial applications, including measurements on rotating shafts

— Part 8: Reciprocating compressor systems

— Part 21: Horizontal axis wind turbines with gearbox

ISO 10816-3 Mechanical vibration - "Evaluation of machine vibration by measurements on non-rotating parts - Part 3: Industrial machines with nominal power above 15 kW and nominal speeds between 120 r/min and 15,000 r/min when measured in situ"

Applicable Item: 

Steam Turbine (below 50 MW and, over 50 MW with below 1500 rpm or over 3600 rpm), Centrifugal Compressor,  Gas Turbine (below 3MW), Generator, all kind of the electric motor, blower and fan

Acceptance Criteria

	Rigid	Flexible	Rigid	Flexible
mm/s	Group 1		Group 2
0 ~ 1.4	A	A	A	A
1.4 ~ 2.3	A	A	B	A
2.3 ~ 2.8	B	A	B	B
2.8 ~ 3.5	B	A	C	B
3.5 ~ 4.5	B	B	C	B
4.5 ~ 7.1	C	B	D	C
7.1 ~ 11	D	C	D	D
11 ~	D	D	D	D
Note:
Group 1 (Huge Machine 300 kW ~ 50 MW, H >= 315 mm, 120 rpm ~ 15000 rpm)
Group 2 (Middle Machine 15 kW ~ 300 kW, 160mm =< H < 315 mm)
Rigid: Lowest Nature Frequency > 1.25 * Main Input Frequency
Flexible: Lowest Nature Frequency < 1.25 * Main Input Frequency
A: Acceptable
B: Satisfactory
C: Unsatisfactory
D: Not Acceptable

Zone A : Newly commissioned machine

Zone B : This zone is considered as acceptable level for unrestricted long-term operation

Zone C : Normally considered unsatisfactory for long-term operation

Zone D : Normally considered to be sufficient severity to cause mechanical damage

Reference Document for Vibration Issue

Reference Video