Download [BS ISO 18283-2006] -- Hard Coal and Coke. Manual Sampling. PDF

Title[BS ISO 18283-2006] -- Hard Coal and Coke. Manual Sampling.
TagsAccuracy And Precision Sampling (Statistics) Variance International Organization For Standardization Experiment
File Size2.1 MB
Total Pages80
Document Text Contents
Page 1

BRITISH STANDARD
BS ISO
18283:2006
Incorporating
corrigenda
June 2008
and May 2009
Hard coal and coke —
Manual sampling
ICS 73.040; 75.160.10
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BS ISO 18283:2006
This British Standard was
published under the authority
of the Standards Policy and
Strategy Committee
on 31 October 2006

© BSI 2009
ISBN 978 0 580 68677 1
National foreword

This British Standard is the UK implementation of ISO 18283:2006,
incorporating corrigendum May 2009. Together with BS ISO 13909-1:2001,
BS ISO 13909-2:2001, BS ISO 13909-3:2001, BS ISO 13909-4:2001,
BS ISO 13909-5:2001, BS ISO 13909-6:2001, BS ISO 13909-7:2001 and
BS ISO 13909-8:2001, it supersedes BS 1017-1:1989 and BS 1017-2:1994
which have been withdrawn.

The start and finish of text introduced or altered by corrigendum is
indicated in the text by tags. Text altered by ISO corrigendum May 2009 i
indicated in the text by ˆ‰.

The UK participation in its preparation was entrusted to Technical
Committee PTI/16, Solid mineral fuels.

A list of organizations represented on this committee can be obtained on
request to its secretary.

This publication does not purport to include all the necessary provisions of
a contract. Users are responsible for its correct application.

Compliance with a British Standard cannot confer immunity from
legal obligations.
Amendments/corrigenda issued since publication



Date Comments

30 June 2008 Supersession details in national foreword updated

30 November 2009 Implementation of ISO corrigendum May 2009

Page 40

32


6.2 Examples

6.2.1 Ladles

A ladle [see Figure 2 a)] is a box or container or slotted device for extracting increments from falling streams
of fuel. Ladles are not suitable for sampling in any operation where overflow of the sampling device occurs.

Ladles and scoops should be made of such materials as stainless steel to avoid sample build-up.

6.2.2 Shovels

A suitable design of a shovel is shown diagrammatically [see Figure 2 b)]. Shovels are constructed from sheet
steel of approximately 2,5 mm thickness and should be fitted with a handle of appropriate length.

6.2.3 Scoops

Suitable designs of scoops [see Figures 2 c) and 2 d)] are shown diagrammatically. Scoops are made of
about 2,5 mm sheet steel and should be fitted with a handle of appropriate length.

The scoop used for the flattened heap division method (see Figure 8) shall be flat bottomed and the width of
the entry shall be at least three times the nominal top size of the fuel. The side walls shall be higher than the
height of the heap and the depth shall be sufficient to allow the required mass of increment to be extracted.

6.2.4 Probes

Probes take the form of tubes which are inserted vertically or at slight angle into the fuel. Insertion into the fuel
is sometimes difficult and the tube tends to empty when it is withdrawn.

Probes are used for sampling fuels of up to 25 mm nominal top size.

Three designs are described:

⎯ Figure 2 e): The probe consists of two half-tubes that are designed to slide together to form a closed
cylinder. Such probes can be used in various lengths up to 3,5 m; long probes are easiest
to use for fuel up to 15 mm nominal top size.

⎯ Figure 2 f): The probe consists of a cylindrical tube that is slightly tapered and is slit along an axis so
that the taper tends to grip the fuel contained in the tube. Using a handle, it is possible to
rotate the tube in order that it can be inserted. The tube can be awkward to empty and
clean.

⎯ Figure 2 g): The probe consists of a channel, the two edges of which have grooves, and a plate that
can slide along the grooves. The channel is inserted open, the plate is inserted along the
grooves and the complete device is withdrawn.

6.2.5 Augers

An auger [see Figure 2 h)] consists of a single spiral blade mounted on a hand crank. The auger is inserted
into the bed of fuel with a screwing motion.

Augers are used for sampling fuels up to 25 mm nominal top size.

6.2.6 Manual cutter

A manual cutter [see Figure 2 i)] is a sampling device that can be moved through a falling stream, manually or
with mechanical assistance. Manual cutters are not suitable for sampling in any operation where overflow of
the cutter will occur.

BS ISO 18283:2006

Page 80

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BS ISO
18283:2006

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