JC/T 620-2021Sampling method for lime (English PDF)

Foreword

This document was drafted in accordance with the rules given in GB/T 1.1-2020

"Directives for standardization - Part 1.Rules for the structure and drafting of

standardizing documents"

This document replaces JC/T 620-2009.Compared with JC/T 620-2009, in

addition to structural adjustments and editorial changes, the main technical

changes are as follows.

a) ADD the scope (see Chapter 1);

b) In terms and definitions, CANCEL the "batch", "batch size", "number";

ADD the "automatic sampling" (see Chapter 2);

c) CANCEL the "batch size" (Chapter 4 of the 2009 edition);

d) In the sampling tools, ADD the automatic sampler; MOVE the lime

sampling tube and diagram of sampling shovel into the informative

appendix A; MODIFY the diameter of sampling tube (see Chapter 4; 5.1

of the 2009 edition);

e) COMBINE the sampling site and sampling location; MODIFY the

requirements for sampling location (see Chapter 5; 5.2 and 5.3 of the 2009

edition);

f) MODIFY the "sampling method" into "sampling procedure"; MODIFY the

classification of sampling locations (see Chapter 7; 5.5 of the 2009 edition);

g) MODIFY the packaging and storage (see Chapter 9; 5.7 of the 2009

edition);

h) ADD the Appendix A.

1 Scope

This document specifies the terms and definitions, sampling tools, sampling

sites and locations, total sampling size, sampling procedures, sample

preparation, packaging and storage, sampling sheets, of lime sampling.

This document is applicable to the inspection sampling of the production and

use of quicklime, quicklime powder, slaked lime powder.

2 Normative references

The provisions in following documents become the provisions of this Standard

through reference in this Standard. For the dated documents, only the versions

with the dates indicated are applicable to this document; for the undated

documents, only the latest version (including all the amendments) is applicable

to this standard.

JC/T 619 Terms for lime

3 Terms and definitions

The terms and definitions as defined in JC/T 619, as well as the following terms

and definitions, apply to this document.

3.1

Manual sampling

Collection of lime samples by the use of manual sampling tools.

3.2

Automatic sampling

Collection of lime samples by the use of an autosampler.

3.3

Unit sample

A lime sample, which is taken from a point or part of each inspection lot,

according to the specified amount.

3.4

Composite sample

A sample, which is obtained by taking the specified volume of all the unit

lime samples, that are obtained from an inspection lot, after uniformly and

thoroughly mixing them.

4 Sampling tools

5 Sampling site and sampling location

6 Total sampling

The total amount of quicklime, which is sampled for each inspected lime

inspection lot, shall not be less than 24 kg; the total amount of quicklime powder

and slaked lime powder sampled shall not be less than 5 kg.

7 Sampling steps

12 unit samples at regular intervals; each sample is not less than 2 kg. If there

is a large block, which has the largest size greater than 100 mm, in the sampling

point, it shall be processed in accordance with 7.1.

8 Sample preparation

9 Packaging and storage

10 Sampling sheet

After the sample is obtained, the person in charge of sampling shall fill in the

sampling sheet. The sampling sheet shall include at least the following.

JC/T 620-2021

JC

BUILDING INDUSTRY STANDARD OF

THE PEOPLE'S REPUBLIC OF CHINA

ICS 91.100.10

CCS Q 27

Replacing JC/T 620-2009

Sampling method for lime

Issued on. MARCH 05, 2021

Implemented on. JULY 01, 2021

Issued by. Ministry of Industry and Information Technology of PRC

Table of Contents

Foreword... 3

1 Scope... 5

2 Normative references... 5

3 Terms and definitions... 5

4 Sampling tools... 6

5 Sampling site and sampling location... 6

6 Total sampling... 7

7 Sampling steps... 7

8 Sample preparation... 9

9 Packaging and storage... 9

10 Sampling sheet... 9

Appendix A (Informative) Lime sampler... 10

Foreword

This document was drafted in accordance with the rules given in GB/T 1.1-2020

"Directives for standardization - Part 1.Rules for the structure and drafting of

standardizing documents"

This document replaces JC/T 620-2009.Compared with JC/T 620-2009, in

addition to structural adjustments and editorial changes, the main technical

changes are as follows.

a) ADD the scope (see Chapter 1);

b) In terms and definitions, CANCEL the "batch", "batch size", "number";

ADD the "automatic sampling" (see Chapter 2);

c) CANCEL the "batch size" (Chapter 4 of the 2009 edition);

d) In the sampling tools, ADD the automatic sampler; MOVE the lime

sampling tube and diagram of sampling shovel into the informative

appendix A; MODIFY the diameter of sampling tube (see Chapter 4; 5.1

of the 2009 edition);

e) COMBINE the sampling site and sampling location; MODIFY the

requirements for sampling location (see Chapter 5; 5.2 and 5.3 of the 2009

edition);

f) MODIFY the "sampling method" into "sampling procedure"; MODIFY the

classification of sampling locations (see Chapter 7; 5.5 of the 2009 edition);

g) MODIFY the packaging and storage (see Chapter 9; 5.7 of the 2009

edition);

h) ADD the Appendix A.

1 Scope

This document specifies the terms and definitions, sampling tools, sampling

sites and locations, total sampling size, sampling procedures, sample

preparation, packaging and storage, sampling sheets, of lime sampling.

This document is applicable to the inspection sampling of the production and

use of quicklime, quicklime powder, slaked lime powder.

2 Normative references

The provisions in following documents become the provisions of this Standard

through reference in this Standard. For the dated documents, only the versions

with the dates indicated are applicable to this document; for the undated

documents, only the latest version (including all the amendments) is applicable

to this standard.

JC/T 619 Terms for lime

3 Terms and definitions

The terms and definitions as defined in JC/T 619, as well as the following terms

and definitions, apply to this document.

3.1

Manual sampling

Collection of lime samples by the use of manual sampling tools.

3.2

Automatic sampling

Collection of lime samples by the use of an autosampler.

3.3

Unit sample

A lime sample, which is taken from a point or part of each inspection lot,

according to the specified amount.

3.4

Composite sample

A sample, which is obtained by taking the specified volume of all the unit

lime samples, that are obtained from an inspection lot, after uniformly and

thoroughly mixing them.

4 Sampling tools

5 Sampling site and sampling location

6 Total sampling

The total amount of quicklime, which is sampled for each inspected lime

inspection lot, shall not be less than 24 kg; the total amount of quicklime powder

and slaked lime powder sampled shall not be less than 5 kg.

7 Sampling steps

12 unit samples at regular intervals; each sample is not less than 2 kg. If there

is a large block, which has the largest size greater than 100 mm, in the sampling

point, it shall be processed in accordance with 7.1.

8 Sample preparation

9 Packaging and storage

10 Sampling sheet

After the sample is obtained, the person in charge of sampling shall fill in the

sampling sheet. The sampling sheet shall include at least the following.

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