Onderwerp: Bezoek-historie

908 - Uniform Method Of Measurement Of The Density Of Bulk Cargoes
Geldigheid:06-04-1999 t/m Status: Geldig vandaag

Dit onderwerp bevat de volgende rubrieken.

 

 

 
Ref. T3/1.01 MSC/Circ.908                                                                                                             4 June 1999

 

1 SOLAS regulation XII/10 (Solid bulk cargo density declaration), as adopted by the 1997 SOLAS Conference on Bulk Carrier Safety and interpreted by operative paragraph 4 of resolution MSC 79 (70), requires the shipper, prior to loading bulk cargo on a bulk carrier, to declare the density of the cargo which shall be verified by an accredited testing organization.

2 The Maritime Safety Committee, at its seventy-first session (19 to 28 May 1999), recognizing the need for a uniform method of density measurement of the bulk cargoes, adopted the performance specification for the measurement of the density of such cargoes set out at annex.

3 Member Governments are invited to bring this circular to the attention of all parties concerned.

***

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Annex

PERFORMANCE SPECIFICATION FOR THE MEASUREMENT OF THE DENSITY OF BULK CARGOES*

 

 

 

 

 

 

*          Referenceismadetoparagraph1.10-"Representativetestsample"andAppendixD-"Laboratorytestprocedures, associatedapparatusandstandards"oftheCodeofSafePracticeforSolidBulkCargoes(BCCode).

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1 Scope

1.1 This specification may be used to determine the bulk density of bulk cargoes.

1.2 Bulk density is the weight of solids, air and water per unit volume. It includes the moisture content of the cargo and the voids whether filled with air or water.

1.3 The density should be expressed in kilograms per cubic metre (kg/m3).

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2 Apparatus

2.1 This specification provides for the use of a container of known volume and tare weight.

2.2 The container should be sufficiently rigid to prevent deformation or volume changes occurring during the test. Where the material contains lumps, or will not readily flow into corners, the container should be of cylindrical shape and⁄or of large size in comparison to the size of lumps. Its capacity must be large enough to contain a representative sample of the cargo for which the density is to be determined.

2.3 The internal surfaces of the container should be smooth with any attachments such as handles being fitted to the exterior.

2.4 Weighing should be done using a weighing instrument certificated by an accredited testing organization.

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3 Procedure

3.1 A sample that is representative of the particle size, compaction and moisture of the material to be loaded on the ship should be selected.

3.2 The container should be filled with a sample of the material so that it is trimmed level with the top of the container. The material should not be tamped.

3.3 The weight of the filled container should be measured and the tare weight subtracted to obtain the weight of the sample.

3.4 The density of the sample should be calculated by dividing the weight of the bulk material to be loaded by the volume of the container.

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4 Recording Results

4.1        Thedensityofthesampleshouldberecordedusingtherecommendedformgivenintheappendix andmadeavailablewhenrequested.

 

4.2        Theresultofthedensitymeasurementshouldbesignedbyarepresentativeoftheaccreditedtesting organization.

 

 

 

 

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Appendix

RECORD OF DENSITY MEASUREMENT

The density of the cargo has been measured in accordance with the uniform method of density measurement of bulk cargoes described in the annex to MSC-Circ.908 which refers to SOLAS regulation XII-10.

                Cargo:(nameandrelevantreferenceintheBCCode):

 Shipper(name,address,telephone,etc.)                                                 :

Sampleorigin(stockpile,ship'shold,etc.)                                              :  

Date(samplinganddensitymeasurement)                                                 :

Grossweight (GW)(containerplussample)                                            :               kg

 

Tare weight(TW) (container)                                                                   :

 

Net weight (TW) (container)                                      (NW=GW-TW)       :              kg

 

Volume(V)(container)                                                                               :             m3               

 

Calculateddensity(d)ofthecargo                                    (d=NW/V)      :            kg/m3                      

        

 

 

 

 

Measurementconductedbytheaccreditedtestingorganization

(Signature,stamp) Doneon  at

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