Excessive vibration of the ship’s structure manifests itself as cracking of the ship’s structure (e.g. bulkheads, tanks), failure of equipment (e.g. radars), and uncomfortable living and working conditions. Narrowband frequency analysis is the recommended method of interpreting vibration measurements in relation to the guidance limits or for investigation purposes. Narrowband frequency analysis should be capable of resolving the frequency of individual components of interest over the relevant frequency range.
In Vibration Survey; Machine classes are classified as;
Class I: Individual parts of machines, integrally connected with the complete machine in its normal operating condition. Production electric motors up to 15 kW are typical examples of machines in this category.
Class II: Medium sized machines (typically electrical motors with 15 to 75 kW output) without special foundations, rigidly mounted engines or machines (up to 300 kW) on special foundations.
Class III: Large prime movers and other large machines with rotating masses mounted on rigid and heavy foundations which are relatively stiff in the direction of vibration measurement.
Class IV: Large prime movers and other large machines with rotating masses mounted on foundations which are relatively soft in the direction of vibration measurement (for example turbo-generator sets, especially those with light weight sub-structures)
Measurement of vibration survey/Vibration analysis for rotating machines, reciprocating machines, Diesel alternative sets, Turbo chargers etc.
Vibration Analysis/Vibration Monitoring of vibration levels for reciprocating compressors, main propulsion gear boxes, rolling element bearings, pipe work etc.
Measurements of Vibration for crew habitability.
Machinery vibration measurements, Vibration monitoring, Vibration analysis, troubleshooting and diagnosis.
Vibration Measurement and Vibration analysis of structural and piping vibrations.
Ship machinery vibrations/Vibration Survey.
Industrial equipment Vibration analysis and its vibration monitoring/Vibration Survey
Standards for noise and vibration:
Lloyd’s Register’s interpretation of ISO 6954:1984 Mechanical Vibration and shock
Guidelines for the overall evaluation of vibration in Merchant Ships (1984).
Whole body vibration measurement as per ISO 6954
Onboard machinery vibration as per Industrial standards
Provisional Rules for Passenger and Crew Accommodation Comfort, (PCAC).
ISO 6954 and IMO 468 are the basis of all vibration and noise measurements standards
Our engineers are all certified vibration analyst and well experienced in the field of vibration measurements/Vibration monitoring and mapping for maritime and offshore installations. Our team offers advisory services in the field of vibration analysis to cater the needs of all shipping and offshore installations.
Dual channel vibration analyzer (Intrinsic and non-intrinsic) with frequency range of 0.5 Hz to 40 KHz.
Typical benefits in our noise and vibration services:
Avoid expensive redesign.
Reduce Noise and Vibrations onboard existing ships and offshore installations.
Comply with Rules, Standards and regulations.
Ensure good working environment.
Avoid technical problems due to vibrations.