ДСТУ EN ISO 21646:2022 Топливо твердое возобновляемое из отходов. Приготовление образцов (EN ISO 21646:2022, IDT; ISO 21646:2022, IDT)



ДСТУ EN ISO 21646:2022
(EN ISO 21646:2022, IDT; ISO 21646:2022, IDT)

Паливо тверде відновлювальне із відходів. Готування зразків

 

 
   
 
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

Contents

Foreword

Introduction

1 Scope

2 Normative references

3 Terms and definitions

4 Symbols

5 Safety remarks

6 Principles of correct sample preparation

7 Quality control and sources of error

8 Apparatus

8.1 Selection of equipment

8.2 Apparatus for sample division

8.3 Apparatus for particle size reduction

8.4 Sieves

8.5 Balance

9 Sample preparation procedure

9.1 General

9.2 Step 1: Collecting the relevant information of the material for sample preparation

9.3 Step 2: Making a sample preparation plan

9.4 Step 3: Performing the sample preparation plan

10 Methods for homogenization and sample division

10.1 General

10.2 Homogenization

10.3 Sample division methods

11 Methods for mass and particle size reduction of laboratory samples and general analysis samples

11.1 General

11.2 Initial sample division

11.3 Initial mass determination

11.4 Pre-drying

11.5 Particle size reduction to < 30 mm

11.6 Sample division of < 30 mm material

11.7 Particle size reduction of < 30 mm material to < 1 mm

11.8 Sample division of < 1 mm material

11.9 Particle size reduction of < 1 mm material to < 0,25 mm

12 Handling considerations of the general analysis sample and the test portion

12.1 Key concepts

12.2 Sequence of preparation procedures

13 Storage, preservation and labelling of samples

14 Sample preparation report

15 Precision

Annex A (normative) Determination of the shape factor

Annex В (normative) Determination of the changing shape factor

Annex C (informative) Examples of sample preparation procedures

Annex D (normative) Guidelines for choosing sample preparation procedures

Annex E (informative) Relationship between minimum amount of sample and particle size - Formula for the estimation of the minimum amount of sample

Annex F (normative) Sample preparation equipment

Annex G (normative) Characteristics of the laboratory sample for chemical analysis of solid recovered fuel

Annex H (informative) Data on the precision of sample preparation

Annex I (informative) Results of ruggedness testing

Bibliography