BS 1756-1:1971
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Methods for the sampling and analysis of flue gases Methods of sampling
Hardcopy , PDF
01-06-2005
English
27-10-1971
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Cooperating organizations
Foreword
Methods
1. Introduction
1.1 Scope
1.2 General
1.3 Definitions
1.4 Types of sample
2. Problems of sampling
2.1 General
2.2 Stratification or variation in composition
2.3 Air inleakage
2.4 Variations in total gas flow
2.5 Velocity distribution across the flue
2.6 Changes in composition during sampling
2.7 Prevention of back diffusion
2.8 Time-lags in sampling systems
2.9 Other difficulties of sampling
3. Selection of a sampling point or points
3.1 General location
3.2 Exact external location
4. Gas sampling apparatus
4.1 Sampling probes
4.2 Types of sampling probe
4.3 Filters
4.4 Aspirators and exhaust pumps
4.5 Traps, seals and excess vacuum reliefs
4.6 Sample containers
4.7 General precautions
5.1 General
5.2 Method for taking a continuous sample at a
constant rate
5.3 Incremental sampling
5.4 Average analysis with variable flow rate
5.5 Multipoint sampling
5.6 Notes on sampling
Figures
1. Apparatus for collecting consecutive gas samples
2. Typical water-cooled sampling probe
3. Heated probe unit with water-cooled jacket
4. A felt pad type of external filter
5. Typical aspirator and exhaust pumps
6. Types of condensate trap
7. Apparatus for taking average samples
8. Multipoint sampling apparatus
This Part is devoted primarily to the general principles to be followed to obtain a representative flue gas sample; the principles apply no matter what the industry or the fuel burning appliance may be. Covers definitions, types of sample, problems of sampling, selection of a sampling point or points and gas sampling apparatus.
| Committee |
EH/2
|
| DevelopmentNote |
Supersedes 91/57229 DC. (03/2006)
|
| DocumentType |
Standard
|
| Pages |
26
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
| Supersedes |
| BS 5309-2:1976 | Methods for sampling chemical products Sampling of gases |
| BS 5243:1975 | General principles for sampling airborne radioactive materials |
| BS 4876:1984 | Specification for performance requirements for domestic flued oil burning appliances (including test procedures) |
| BS 1756-4:1977 | Methods for sampling and analysis of flue gases Miscellaneous analyses |
| BS 845-2:1987 | Methods for assessing thermal performance of boilers for steam, hot water and high temperature heat transfer fluids. Comprehensive procedure |
| BS 7186:1989 | Specification for non-domestic gas-fired overhead radiant tube heaters |
| BS 6069-4.1:1990 | Characterization of air quality. Stationary source emissions Method for the determination of the mass concentration of sulphur dioxide: hydrogen peroxide/barium perchlorate/Thorin method |
| BS 3156-2:1968 | Analysis of fuel gases Special determinations |
| BS 4314-1:1968 | Specification for apparatus for physical methods of gas analysis Infra-red gas analysers for industrial use |
| BS 3156-4:1969 | Analysis of fuel gases Gas chromatographic analysis |
| BS 5991:1989 | Specification for indirect gas fired forced convection air heaters with rated heat inputs up to 2 MW for industrial and commercial space heating: safety and performance requirements (excluding electrical requirements (2nd family gases) |
| BS 5990:1990 | Specification for direct gas-fired forced convection air heaters with rated heat inputs up to 2 MW for industrial and commercial space heating: safety and performance requirements (excluding electrical requirement) (2nd family gases) |
| BS 5978-1:1989 | Safety and performance of gas-fired hot water boilers (60 kW to 2 MW input) Specification for general requirements |
| BS 3300:1974 | Specification for kerosine (paraffin) unflued space heaters, cooking and boiling appliances for domestic use |
| BS 5978-1:1983 | Safety and performance of gas-fired hot water boilers (60kW to 2 MW input) Specification for general requirements |
| BS 5809:1980 | Specification for safety and efficiency of the gas heating equipment of commercial dishwashing machines |
| BS 845-1:1987 | Methods for assessing thermal performance of boilers for steam, hot water and high temperature heat transfer fluids Concise procedure |
| BS 1756-5:1971 | Methods for sampling and analysis of flue gases Semi-routine analyses |
| BS 3300:1985 | Specification for paraffin unflued space heating and cooking appliances for domestic use |
| BS 2049:1985 | Specification for paraffin lighting appliances for domestic use |
| BS 3156-5:1969 | Analysis of fuel gases Techniques for high pressure gases |
| BS 6069-4.4:1993 | Characterization of air quality. Stationary source emissions Determination of the mass concentration of sulfur dioxide. Performance characteristics of automated measuring methods |
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