GSO ISO 7919-2:2013
ISO 7919-2:2009
								
									
									Gulf Standard
								
								
								
									 
									Current Edition
									
								
								
									·
									Approved on
									31 December 2013
								
							
							Mechanical vibration -- Evaluation of machine vibration by measurements on rotating shafts -- Part 2: Land-based steam turbines and generators in excess of 50 MW with normal operating speeds of 1 500 r/min, 1 800 r/min, 3 000 r/min and 3 600 r/min
GSO ISO 7919-2:2013 Files
													English
													
														12 Pages
													
												
												
													
														Current Edition
														
													
													
														Reference Language
													
												
			                                
													31.09 OMR
												
			                                
			                                
			                            GSO ISO 7919-2:2013 Scope
									This part of ISO 7919 establishes provisions for evaluating the severity of in-situ, broad-band shaft vibration measured radial (i.e. transverse) to the shaft axis at, or close to, the main bearings. These are in terms of:
— 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.
This part of ISO 7919 is applicable to land-based steam turbines and generators with power outputs greater than 50 MW and a normal operating speed of 1 500 r/min, 1 800 r/min, 3 000 r/min or 3 600 r/min. It is also applicable to steam turbines and/or generators which are directly coupled to a gas turbine (such as for combined-cycle applications). In such cases, the criteria of this part of ISO 7919 apply only to the steam turbine and the generator (including synchronizing clutches). ISO 7919-4 and ISO 10816-4 are applicable to the evaluation of the gas turbine vibration.
The numerical values specified are not intended to serve as the only basis for judging the severity of vibration. For large steam turbines and generators, it is also common to judge the vibration based on measurements taken on non-rotating parts. For such vibration measurement requirements, see ISO 10816-1 and ISO 10816-2.
									
								
							
						
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