AS 1948-1987

1 - AS 1948-1987 ACOUSTICS - MEASUREMENT OF AIRBORNE NOISE ON BOARD VESSELS AND OFFSHORE PLATFORMS
4 - PREFACE
4 - CONTENTS
5 - 1 SCOPE.
5 - 2 APPLICATION.
5 - 3 REFERENCED DOCUMENTS.
5 - 4 DEFINITIONS.
5 - 4.1 Vessel
5 - 4.2 Offshore platform
5 - 4.3 Prototype and acceptance tests
5 - 4.4 Monitoring tests
5 - 5 NATURE OF TESTS.
5 - 6 MEASUREMENTS.
5 - 6.1 General.
5 - 6.2 Precision.
6 - 7 RECOMMENDED NOISE LEVELS.
6 - 8 EQUIPMENT.
6 - 8.1 Sound level meter.
6 - 8.2 Alternative measuring equipment.
6 - 8.3 Measurement of noise spectra.
6 - 9 ACOUSTIC ENVIRONMENT.
6 - 9.1 Extraneous (background) noise sources.
6 - 9.2 Sea state and meteorological conditions.
6 - 9.3 Depth of water.
6 - 10 TEST COURSE.
6 - 11 OPERATING CONDITIONS FOR VESSELS AND PLATFORMS DURING THE TEST.
6 - 11.1 General.
6 - 11.2 Loading.
7 - 11.3 Main propulsion machinery for self-propelled vessels only.
7 - 11.4 Propeller setting.
7 - 11.5 Auxiliary machinery.
7 - 11.6 Air-conditioning and ventilating systems.
7 - 11.7 Doors and windows.
7 - 11.8 Furnishings.
7 - 12 MICROPHONE POSITIONS.
7 - 12.1 General.
7 - 12.2 Living quarters.
7 - 12.3 Engine room.
7 - 12.4 Control stations.
7 - 12.5 Other unusually noisy locations.
7 - 12.6 Deck.
7 - 12.7 Accessible intake and exhaust openings.
7 - 12.8 Bridge wings.
9 - APPENDIX A - SUGGESTED TABLE FOR RECORDING SOUND LEVEL READINGS AT DIFFERENT MICROPHONE POSITIONS
10 - APPENDIX B - FORMAT FOR NOISE SURVEY REPORT
10 - B1 SHIP PARTICULARS.
10 - B2 MACHINERY PARTICULARS.
11 - B3 MEASURING INSTRUMENTATION.
11 - B4 CONDITIONS DURING MEASUREMENT.

Sets out the methods and conditions for obtaining objective measurements of the noise levels and noise spectrum of airborne noise on board vessels and fixed and mobile offshore platforms, where the source of the noise is on or in the vessels and platforms.

This Standard sets out the methods and conditions for obtaining objective measurements of the noise levels and noise spectrum of airborne noise on board vessels and fixed and mobile offshore platforms, where the source of the noise is on or in the vessels and platforms.