Which expert has information on **turbine bearing vibrations** or industry standards?

I copied it from someone online; hope it can help you. Standards for turbine bearing vibration: 1. Standards for vibration of bearings in auxiliary machinery: Rotational speed amplitude (double amplitude) (mm): Excellent – Good – Acceptable; n≤10,000: 0.05, 0.07, 0.10; 10,000 < n ≤ 20,000: 0.04, 0.06, 0.08; 20,000 < n ≤ 30,000: 0.03, 0.04, 0.05; n > 30,000: 0.02, 0.03, 0.04. 2. Standards for shaft vibration of units: For domestic 200MW and lower capacity units, it is generally appropriate to measure the vibration of the bearings; if the manufacturer does not specify any requirements regarding shaft vibration measurement, the values in the table below can be used as a reference. Reference standards for shaft vibration of large steam turbine generators (double amplitude, in um): Relative displacement at 1500 r/min and 3000 r/min – relative displacement, absolute displacement; Relative displacement, absolute displacement: A (good): 100, 120, 80, 100; B (acceptable): 200, 240, 165, 200; C (shutdown required): 300, 385, 260, 320. 3. Standards for bearing vibration: Bearing vibration standards (double amplitude, in mm): Excellent, Good, Acceptable – at 1500 r/min: ≤0.03, ≤0.05, ≤0.07; at 3000 r/min: ≤0.02, ≤0.025, ≤0.05; when n ≥ 5000 r/min: ≤0.01, ≤0.025, ≤0.05. 4. ISO 3945 vibration standards: Vibration intensity Vf (mm/s) and support classification – Flexible support, Rigid support: 0.45 for A (good), 0.71, 1.12, 1.8 for B (satisfactory); 2.8, 4.5, 7.1 for C (unsatisfactory); 11.2, 18 for D (immediate shutdown required). The relationship between vibration intensity Vf (mm/s) and the peak-to-peak vibration displacement Sp-p (mm) is given by Sp-p = 2√2 Vf/ω, where angular velocity ω = 2πf, and f is the frequency. When f = 50 Hz, the values corresponding to vibration intensity and vibration displacement are shown in the table below: Values corresponding to vibration intensity and vibration displacement Vf (mm/s): 0.45, 0.71, 1.12, 1.82, 2.84, 4.57, 7.11, 11.21, 18.02, 28.04, 5.07, 11.0; Sp-p (um): 46.3, 101, 625, 40.66, 310, 0162, 250, 406, 663, 0. 5. IEC vibration standards (double amplitude, um): IEC vibration standards; Rotational speed (r/min): 1000, 1500, 1800, 3000, 3600, 06000, 7200; Bearing vibration: 75, 50, 40, 25, 21, 12, 6; Shaft vibration: 150, 100, 80, 50, 42, 24, 12. 6. How are the current vibration standards for steam turbines specified in China? 1) When the turbine speed is 1500 r/min, a vibration double amplitude of 50 um or less is considered good, while 70 um or less is considered acceptable ； When the turbine speed is 3000 r/min, a vibration double amplitude of 25 um or less is considered good, while 50 um or less is considered acceptable. 2) The standard also specifies that the bearing vibration of newly installed units should not exceed 30 um. 3) The values specified by the standards apply to the rated speed and any stable operating condition under load. 4) The standard specifies the vibration measurements of the bearing in the vertical, horizontal, and axial directions. When conducting vibration measurements, the position for each measurement should remain consistent; otherwise, it will lead to significant measurement errors. 5) If the vibration amplitude in any of the three directions exceeds the specified value, the vibration condition of that unit is considered unacceptable, and measures should be taken to eliminate the vibration. 6) The emergency stop procedure also stipulates that if the vibration of the turbine increases by 50 um during operation, the machine must be stopped immediately. It also stipulates that the vibration at the critical speed shall not exceed 100um.

Thank you so much! I have already seen the above content online before. I need the source for the above standards now; that is, what are these standards? ““Standard number”? Thank you again!