BS 3142-2:1990

Committees responsible
Foreword
Specification
1 Scope
2 Sampling and preparation of samples
3 Size
4 Total moisture
5 Combustion test
6 Quality control
Appendices
A Sampling procedure
B Preparation of samples for testing
C Determination of undersize and oversize
D Determination of total moisture
E Combustion test
F Quality control
G Calibration of the thermostat
Table
1 Alternative methods of assessing results
Figures
1 Test setting for boiler performance tests
2 QW/JS thermostat
3 Fittings for water temperature measurement
4 Ignition burner for simulated town or coke oven gas
   (1st family gas)
5 Ignition burner for natural gas (2nd family gas)
6 Thermostat calibration curves
7 Modified valve plate mounting

Sampling, size, moisture content and combustion performance.

This Part of BS 3142 specifies the sampling procedure, requirements and test methods for cokes at producers’ works, intended for use in coke-burning openable and closed domestic appliances and open fires operating with fan-assisted primary air. These cokes have an overall nominal aperture size range of 10.0 mm to 45.0 mm in accordance with the square aperture plate in Table 3 of BS 410:1986 and are classified as follows:

S (singles): nominal size range 10.0 mm to 25.0 mm square hole

D (doubles): nominal size range 16.0 mm to 45.0 mm square hole

The specification applies to cokes produced under the following manufacturing arrangements:

1. S only;
2. S and D simultaneously from the same coals.

NOTE 1 When a plant is producing S and D coke simultaneously the reactivities of these cokes will be similar. For this reason a combustion test on the S coke is regarded as providing adequate control of the quality of the D coke and no separate combustion test of the D coke is required by this Part of BS 3142.

NOTE 2 The cokes may be dispatched in weighed bags and/or in bulk.

NOTE 3 The titles of the publications referred to in this Part of BS 3142 are listed on the inside back cover.