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GB/T 12303-2009 English PDF

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GB/T 12303-2009: Measurement of sound pressure level for sound signal appliances by seagoing vessel
Status: Valid

GB/T 12303: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 12303-2009English169 Add to Cart 3 days [Need to translate] Measurement of sound pressure level for sound signal appliances by seagoing vessel Valid GB/T 12303-2009
GB/T 12303-1990English239 Add to Cart 2 days [Need to translate] Measurement of sound pressure level for sound signal appliances by seagoing vessel Obsolete GB/T 12303-1990

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Basic data

Standard ID GB/T 12303-2009 (GB/T12303-2009)
Description (Translated English) Measurement of sound pressure level for sound signal appliances by seagoing vessel
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard R09
Classification of International Standard 03.220.40; 17.140.01
Word Count Estimation 7,792
Date of Issue 2009-03-31
Date of Implementation 2009-11-01
Older Standard (superseded by this standard) GB/T 12303-1990
Quoted Standard GB/T 3241; GB/T 3785; JJG 176; JJG 188
Regulation (derived from) National Standard Approval Announcement 2009 No.4 (Total No.144)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the ship sound signaling apparatus (hereinafter referred to as the sound signal appliances) applicable requirements, technical requirements, measurement methods and recording requirements. This standard applies to ships at sea, as well as other ship out of the harbor.

GB/T 12303-2009: Measurement of sound pressure level for sound signal appliances by seagoing vessel


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Measurement of sound pressure level for sound signal appliances by seagoing vessel ICS 03.220.40; 17.140.01 R09 National Standards of People's Republic of China Replacing GB/T 12303-1990 SPL measurement ship sound signal appliances Posted 2009-03-31 2009-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard corresponds to the International Maritime Organization (IMO) "1972 International Regulations for Preventing Collisions at sea," 2001 amendment to this standard and the international sea IMO (IMO) "1972 International Regulations for Preventing Collisions at sea," 2001 Amendment degree of consistency is not equivalent. This standard replaces GB/T 12303-1990 "Ship sound signal appliances SPL measurements." This standard compared with GB/T 12303-1990, the main changes are as follows. --- Scope is amended as sea vessels and other ships entering and leaving the harbor (see Chapter 1); --- When the battery power supply, steady voltage range revised to -25% ~ + 30% (see Chapter 4); --- Of a length of 20m or less prepared ship whistle sound intensity and frequency limits of the requirements were modified (see Table 2 and Chapter 5); --- Measurements are recorded in the principles laid down (see Chapter 6). Appendix A of this standard is an informative annex. The standard proposed by the Ministry of Transport of the People's Republic of China. This standard by the Ministry of Transport and Maritime Safety Standardization Technical Committee. This standard was drafted. People's Republic of China Maritime Safety Administration, the Guangdong Maritime Safety Administration. The main drafters of this standard. Liu Huiru, Fang Zhu, Guo education standard, Chen Xinhui. This standard replaces the standards previously issued as follows. --- GB/T 12303-1990. SPL measurement ship sound signal appliances

1 Scope

This standard specifies the ship acoustic signal apparatus (hereinafter referred to as sound signal appliances) applicable requirements, technical requirements, methods of measurement and measurement records Requirements. This standard applies to ships at sea, as well as other ships out of the harbor.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 3241 octave and fractional octave filters (GB/T 3241-1998, eqvIEC 61260.1995) GB/T 3785 sound level meter electric, acoustic performance and test methods JJG176 acoustic calibrator verification procedures JJG188 sound level meter verification procedures

3 sound signal appliances

Applicable ship sound signal appliances varies with the length of the vessel, shall comply with the requirements of Table 1. Table 1 name Captain L/m ≥200 100≤L < 200 75≤L < 100 20≤L < 75 12≤L < 20 < 12 Super Model flute √ - - - - Large size flute - √ √ - - The model flute - - - √ - Small models flute - - - - √ Big Bell Model √ √ √ √ - Small size bell - - - - √ Gong √ √ - - - Energy efficient sound Other equipment loud Notes. √ indicates applicable, - indicates not applicable. 4. Technical Requirements 4.1 Number bell hammer quality should not be less than 3% of the mass of the bell. 4.2 No whistle shall be issued for the duration of the sound 4s ~ 6s long and short beeps 1s around. Airing when the sound of the whole story clearly identifiable, without shaking Fixed or fluctuated phenomenon. 4.3 Dynamic whistle used compressed air bottle should maintain the rated pressure range of pressure variation shall not exceed 10% of the rated pressure, compression Air ducts should be smooth, airtight, safe and reliable, and not leave residual water or residual oil. 4.4 supply voltage change of the nominal -10% + 6% of the nominal frequency ± 5%, the electrical whistle should be able to work reliably Make. If using battery power, the voltage change at -25% ~ + 30%, should be able to work reliably.

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