Quick Reference Guide

The following quick reference guide allows the reader to go directly to the relevant section or appendix concerning a particular problem.

For Ventilation Systems

Source of Noise Problem	Remedies	Relevant Section	Relevant Appendix
Chillers	- Barrier - Partial enclosure - Complete enclosure - Silencer - Floating floor - Vibration isolator	5.1.1 5.1.1 5.1.1 5.1.1 5.1.1 5.1.1	Appendix VI Appendix V Appendix IV Appendix IX Appendix X Appendix VIII
Water Cooling Towers	- Barrier - Partial enclosure - Complete enclosure - Silencer - Acoustic mat - Lined vent cowl - Vibration isolator	5.1.2 5.1.2 5.1.2 5.1.2 5.1.2 5.1.2 5.1.2	Appendix VI Appendix V Appendix IV Appendix IX -- -- Appendix VIII
Fans	- Silencer - Complete enclosure - Fan speed reduction - Diverting - Inertia block - Vibration isolator - Flexible connector	5.1.3 5.1.3 5.1.3 5.1.3 5.1.3 5.1.3 5.1.3	Appendix IX Appendix IV -- -- Appendix VII Appendix VIII --
Ducts	- Stiffening - Damping material - Composite lagging	5.1.4 5.1.4 5.1.4	-- -- --

 

For Pumping Systems

Source of Noise Problem	Remedies	Relevant Section	Relevant Appendix
Pipes	- Large radius bend pipe - Composite lagging - Low water flow velocities - Rigid mountings around the bend - Vibration isolator - Compressible material - Pressure reducing valve	5.2.1 5.2.1 5.2.1 5.2.1 5.2.1 5.2.1 5.2.1	-- -- -- -- Appendix VIII -- --
Pumpsets	- Barrier - Partial enclosure - Complete enclosure - Replacement of bearing - Inertia block - Vibration isolator - Flexible connector	5.2.2 5.2.2 5.2.2 5.2.2 5.2.2 5.2.2 5.2.2	Appendix VI Appendix V Appendix IV -- Appendix VII Appendix VIII --

 

For Lift Systems

Source of Noise Problem	Remedies	Relevant Sections	Relevant Appendix
Traction Machines	- Plantroom - Inertia block - Vibration isolator	5.3.1 5.3.1 5.3.1	Appendix IV Appendix VII Appendix VIII
Guide Rails	- Vibration pads	5.3.2	Appendix VIII
Hydraulic Lifts	- Complete enclosure - Vibration isolator	5.3.3 5.3.3	Appendix IV Appendix VIII

 

For Emergency Generator Sets

Source of Noise Problem	Remedies	Relevant Section	Relevant Appendix
Emergency Generator Sets	- Plantroom - Vibration isolator - Flexible connector	5.4.1 5.4.1 5.4.1	Appendix IV Appendix VIII --

 

Recommended Practical Remedies for Different Exceedance Levels (click here)

 

 

Glossary of Acoustic Terminology (click here)

 

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