GOST R 51784-2001

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  ГОСТ Р 51784-2001

GOST R 51784−2001 silver Bars measuring. Specifications

GOST R 51784−2001

Group B50

STATE STANDARD OF THE RUSSIAN FEDERATION

SILVER BARS MEASURING

Specifications

Silver weighted ingots. Specifications

OKS 77.120.99
77.150.99
GST 17 5221

Date of introduction 2002−03−01

Preface

1 DEVELOPED AND SUBMITTED by the Technical Committee on standardization TC 304 «Noble metals, alloys, industrial and jewelry products made of them; secondary resources containing noble metals», Ekaterinburg factory on processing of nonferrous metals

2 ADOPTED AND put INTO EFFECT by the Resolution of Gosstandart of Russia of 25 July 2001 N 285-St

3 INTRODUCED FOR THE FIRST TIME

1 Scope

This standard covers ingots silver (hereinafter — the blocks) with weight from 1 to 1000 g intended for commercial and other purposes.

2 Normative references

The present standard features references to the following standards:

GOST 8273−75 wrapping Paper. Specifications

GOST 9347−74 Cardboard gasket and gasket from him. Specifications

GOST 10354−82 polyethylene Film. Specifications

GOST 14192−96 Marking of cargo

GOST 24104−88 laboratory Scales General purpose and model. General specifications

GOST 28353.0−89 Silver. General requirements for methods of analysis

GOST 28353.1−89 Silver. Method of atomic-emission analysis

GOST 28353.2−89 Silver. Method of atomic-emission analysis with inductive plasma

GOST 28353.3−89 Silver. Method of atomic-absorption analysis

GOST 28595−90 Silver bullion. Specifications

3 Symbols and abbreviations

In standard, the following symbols and abbreviations:

SR 999,9 m: SR — silver: 999,9 sample, i.e., the minimum noble metal content measured in parts per thousand mass units (ppm, PPT); m — silver for bullion;

SSSR 10, Clsr 250 With bar, sh — forged performance, L — cast performance, SR — silver, the figure is the nominal value of the mass of the ingot in grams.

Example of designation of the ingot of silver weighing 10 g in building design:

Ingot SSSR 10 GOST R 51784−2001

4 Technical requirements

The ingots shall conform to the requirements of this standard.

Ingots put in the cast and stamped version.

4.1 Key parameters and dimensions

4.1.1 Dimensions and annotations bars are given in table 1.


Table 1 — Designations, weights and sizes of bullion silver

4.1.2 the Form of bars shall be as given in Appendix A.

4.2 Characteristics (properties)

4.2.1 the Chemical composition of the silver bullion must meet the specified in table 2.


Table 2 — Chemical composition of silver in dimensional ingot

4.2.2 the surface of the ingot must be free of grease, captivity, cracks, cavities, delaminations, burrs, slag and other foreign inclusions.

On the surface of the ingot cast performance allowed the existence of bare areas to a depth of not more than 1 mm. On the front surface of the cast ingot is allowed concavity, sinuosity, as a result of shrinkage during solidification of the metal.

The flip side of the extruded ingot can be made frosted.

4.2.3 Weight and ingots limit deviations from it shall conform to table 1.

4.3 Marking

4.3.1 the Marking is applied on the front side of each ingot and shall contain:

the inscription «RUSSIA» located in the oval;

— the nominal mass of ingot, g;

— the name of the metal «SILVER»;

— mass fraction of silver in the samples;

— trademark of the manufacturer;

number (code) of the ingot.

4.3.2 the Order of the markings on the ingot is given in Appendix A.

Notes

1 by agreement with the manufacturer details on the front side of the ingot can be performed in English in Appendix B. In the ingots with a mass of 50 grams and less is allowed to put an inscription: «MELTER ASSAYER».

2 On the ingot may be caused to the trademark of the customer or other symbols, as agreed upon with the manufacturer.

4.3.3 Marking of the ingot shall be clear, legible. Impression marking of the text on the ingot must be convex. On cast ingots impression may be depressed. Not allowed corrections labeling, merge letters and numbers.

The number of the ingot is set by the manufacturer and is done with a metal stamp. He, like other marking on 4.3.1, can be applied to a laser or other method.

Note — By agreement between manufacturer and customer the number of the ingot weighing 50 grams and less can be printed on the reverse side.

4.4 Packing

4.4.1 Each ingot Packed in the package of polyethylene film according to GOST 10354. The bars should be stacked in rows in plastic containers or wooden boxes, made by regulations. Each row in a plastic container or a wooden box should be separated from the next paper according to GOST 8273 and cardboard according to GOST 9347. Plastic containers or wooden boxes Packed in a metal container.

Allowed to put plastic containers or wooden boxes without packaging in a metal container. In this case, the thickness of the wall of the wooden box should be at least 10 mm.

Net weight of each seat must not exceed 50 kg.

Allowed the use of other packaging materials and types of packaging, providing protection bars against mechanical damage.

4.4.2 Each ingot is accompanied by a manufacturer’s certificate in Appendix B. the Certificate is packaged in a box with the ingot.

In agreement with the manufacturer in the certificate may be made to the trademark and the name of the customer.

4.4.3 Each delivery bullion must be accompanied by a specification, protected by plastic film, which is placed in one of the packing boxes.

In specifications should be specified:

— the name of the manufacturer;

room specifications;

— name of the product: «silver bars measuring»;

— the designation of this standard;

— the name of the recipient;

— batch numbers;

— the numbers of places;

— number of ingots;

nominal bar weight, g;

— mass fraction of silver, %;

— number of bars for parties.;

— the year of issue;

— signatures of responsible persons.

4.4.4 Each batch of ingots is accompanied by a document about quality (passport), which must be specified:

— the name of the manufacturer;

— name of the product: «silver bars measuring»;

— the designation of the ingot;

— the designation of this standard;

— the batch number;

— number of ingots;

— mass fraction of silver and impurities, %;

— the number of ingots making up the consignment.;

— the mass of the party bars, g;

room specifications;

— date of issue;

— stamp (seal) of the technical control of manufacturer;

— signatures of responsible persons.

Passport in plastic film placed in the box along with ingots of the respective party.

Allowed to form a package of documents (specification, quality) and send it separately.

Note — by agreement with the manufacturer of each ingot may be accompanied by a passport on 4.4.4.

4.4.5 On each box (packaging place) be tagged or stamped with the number specification and number of the place if it comes not in the container. Boxes are marked according to GOST 14192 with the indication of manipulation sign «Fragile. Caution."

4.4.6 Each container and the box should be sealed or sealed by the manufacturer.

5 acceptance Rules

5.1 the Ingots are presented to the receiving parties. The party shall consist of ingots of one heat. The weight of the batch shall not exceed 100 kg.

5.2 determination of the chemical composition of the silver bullion cast performance from the manufacturer is carried out on any two bars from the party (bottoms). A sample taken from two opposite diagonal corners by segments, cutting or drilling.

Allowed sampling in mid-spill bottoms.

5.3 determination of the chemical composition of silver in stamped ingots of execution carried out on samples taken from each heat prior to casting or cast workpiece. The sample is selected from two opposite ends of cast billet by segments, cutting or drilling. Allowed sampling of the ingots for 5.4.

Can be applied other rules of sampling does not reduce the representativeness of the sample.

The manufacturer guarantees the silver content in the ingot according to the requirements of 4.2.1.

5.4 If necessary, the chemical speciation of silver from the customer can be carried out on samples taken from any two bars of the party (bottoms) by drilling in the opposite corners of the ingot to a depth equal to half the thickness of the ingot. For bars less than 3 mm thick breakdown may be the ingot or part of it.

5.5 Checking the quality of the surface (4.2.2), mass (4.2.3) and labelling (4.3) subjected to every ingot.

5.6 the Geometric dimensions of the ingot (4.1.1) is given for the tool and provided with technically

5.7 quality Check of packing (4.4), including documentation, are subjected to 100% parties bars.

5.8 Upon receipt of unsatisfactory results of the chemical composition (4.2.1) the analysis is repeated on another sample selected from the same batch. The results of the repeated checking are final and apply to the entire party.

5.9 If there is disagreement in the assessment of the chemical composition of silver from the manufacturer and the customer to carry out the arbitration the analysis of the sample, which is taken in the manner prescribed in 5.2 and 5.3, and stored at the factory for at least three months from the date of shipment.

6 Methods to control

6.1 Analysis of the chemical composition of silver is carried out according to GOST 28353.0 — GOST 28353.3 or other methods, certified in the prescribed manner and providing the requirements of this standard.

6.2 control the mass of ingots up to 200 g, inclusive, is carried out on the scales General purpose of the 2nd accuracy class according to GOST 24104, weight of ingots more than 200 to 1000 g inclusive on the scales General purpose of the 3rd accuracy class according to GOST 24104.

6.3 Control of the surface quality, marking, and packaging ingots is carried out without the use of magnifying instruments; the depth of the denuded places, according to the method of the manufacturer.

7 Storage and transportation

7.1 Storage and transportation of silver bullion is carried out in accordance with established requirements [1], [2].

Annex a (mandatory). The order of marking and shape of a small bar of silver

APPENDIX A
(required)

1 — the number (code) of the ingot; 2 — trademark of the manufacturer; 3 — the nominal mass of the ingot

APPENDIX B (mandatory). The order of labeling of a small bar of silver in English

APPENDIX B
(required)

1 — the number (code) of the ingot; 2 — trademark of the manufacturer; 3 — the nominal mass of the ingot

ANNEX b (mandatory). The contents of the certificate of the ingot

THE APP
(required)

APPENDIX d (reference). Bibliography

APPENDIX D
(reference)

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UDK 669.21:006.354 OKS 77.120.99 B50 RME 17 5221
77.150.99

Keywords: bullion, silver, dimensions, marking, mass, certificate