ISO 13909-5:2025 PDF

Name: ISO 13909-5:2025 — Coal and coke — Mechanical sampling — Part 5: Sampling of coke from moving streams
SKU: ISO 13909-5:2025
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Coal and coke — Mechanical sampling — Part 5: Sampling of coke from moving streams

Название (английский):

ISO 13909-5:2025

Coal and coke — Mechanical sampling — Part 5: Sampling of coke from moving streams

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 22
Дата публикации:: 22 июля 2025 г.
Издание:: ISO IS 13909 edition 3 version 1
ICS:: 73.040

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Описание (английский):

This document specifies procedures and requirements for the design and establishment of sampling schemes for the mechanical sampling of coke from moving streams and the methods of sampling used. The diversity of types of equipment for sampling and the conditions under which mechanical sampling is performed make it inappropriate to specify standard designs for samplers which will be applicable to all situations.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 13909-5:2025 - "Coal and coke - Mechanical sampling - Part 5: Sampling of coke from moving streams" is the ISO technical standard that specifies procedures and requirements for designing and establishing mechanical sampling schemes for coke taken from continuous (moving) streams. Published in 2025 as the third edition, it complements other parts of the ISO 13909 series and focuses on practical requirements rather than prescribing a single sampler design, acknowledging the diversity of equipment and site conditions.

Key technical topics and requirements

Establishing a sampling scheme: stepwise guidance covering definition of quality parameters, lot definition, required precision, sample combination, variability assessment, number of sub-lots and increments, sampling interval, nominal top size and minimum increment mass.

Design considerations: selection of material to be sampled, determination of parameters (moisture vs physical samples), division of lots, basis of sampling, and management of precision and bias in sampling.

Precision and variance: treatment of total variance into components - primary increment variance and preparation/testing variance - and how these inform sample count and increment sizing.

Minimum sample and increment mass: procedures to ascertain minimum mass and average increment mass based on nominal top size and analytical needs.

Sampling methods: approved approaches include time-basis sampling, stratified random sampling, and reference sampling, with guidance on increment-taking, sampling intervals and increment mass.

Mechanical sampler design: general design requirements, safety, sampler operation, location, and checking for precision and bias. Specific guidance is provided for falling‑stream-type samplers and cross-belt-type primary samplers, including operation, design and maintenance considerations.

Handling, storage and sample preparation: requirements to preserve sample integrity, preparation practices (see also ISO 13909-6), and strategies to minimize bias.

Verification and quality control: measures for checking sampler performance and ongoing verification to maintain confidence in results.

Practical applications and users

ISO 13909-5:2025 is intended for:

Coke producers and customers requiring representative samples for commercial transactions

Plant engineers and process control teams using sampling data for operations optimization

QA/QC laboratories and analysts preparing and testing coke samples

Equipment manufacturers and maintenance teams designing or installing mechanical samplers

Inspectors, auditors and regulatory bodies assessing conformity and sampling reliability

Benefits include improved representativeness of test samples, reduced sampling bias, defensible commercial sampling procedures, and better-informed process control decisions.

Related standards

ISO 13909-1:2025 - General introduction to mechanical sampling

ISO 13909-6 - Preparation of test samples of coke

ISO 13909-7 - Methods for determining precision of sampling, sample preparation and testing

ISO 13909-8 - Methods of testing for bias

ISO 21398 - Guidance to the inspection of mechanical sampling systems

For implementation, consult the full ISO 13909-5:2025 document and related parts for detailed procedures, formulas and verification methods.

ISO 13909-5:2025 PDF

Abstract

Похожие стандарты

Overview

Key technical topics and requirements

Practical applications and users

Related standards

Технические детали

ISO 13909-1:2025

Coal and coke — Mechanical sampling — Part 1: General introduction

BS ISO 13909-2:2025

Coal and coke. Mechanical sampling. Sampling of coal from moving streams.

ISO 13909-6:2001

Hard coal and coke — Mechanical sampling — Part 6: Coke — Preparation of test samples

ISO 13909-7:2001

Hard coal and coke — Mechanical sampling — Part 7: Methods for determining the precision of sampling, sample…

ISO 13909-8:2001

Hard coal and coke — Mechanical sampling — Part 8: Methods of testing for bias

BS ISO 21398:2007

Hard coal and coke. Guidance to the inspection of mechanical sampling systems