ASTM-D7430 2010

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D7430-10b Standard Practice for Mechanical Sampling of Coal

Published By	Publication Date	Number of Pages
ASTM	2010	40

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Categories: 75.160.10 - Solid fuels, ASTM

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Description

1.1 This practice is divided into 4 parts. These 4 parts represent the previous standards D7256/D7256M , D4916 , D4702 , and D6518 . These 4 standards are the 4 that govern the mechanical sampling of coal and have been combined into one document for the ease of reference of the users of these standards.

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PDF Pages	PDF Title
1	Scope
2	Referenced Documents Terminology
4	Summary of Practices Significance and Use Increment Collection Classification Organization and Planning of Sampling Operations TABLE 1
6	Procedures
7	Maintenance of Mechanical Sampling Equipment Precision and Bias
8	FIG. 1
9	Summary of Practices Significance and Use Organization and Planning of Sampling Operations
11	Precision and Bias
12	Significance and Use Hazards Assessing the Organization and Planning of Sampling Operations General Observations of Coal Stream Variability as Related to Primary Increment Collection by Falling-Stream and Cross-Belt Samplers General Observations of Auger Placement
13	Inspection of the Primary Sampler in Time-Based Cross-Belt or Falling-Stream Sampling Systems Inspection of Augers Criteria for Secondary Sampler Operation
14	Criteria for Tertiary or Final Sampler Operation Cautions for Collecting Final Sample General Considerations to be Observed by the Inspector
15	Summary of Practices Significance and Use Guidelines for When To Bias Test Apparatus
16	Description of Test Procedures
17	Organization and Planning
19	Keywords
20	A1. COLLECTION OF REFERENCE SAMPLES (SECTION D – BIAS TESTING) A1.1 Reference Samples TABLE A1.1
21	A1.2 Surrogate Samples FIG. A1.1
22	A2. STATISTICAL PROCEDURES (SECTION D – BIAS TESTING) A2.1 Nonparametric Statistical Procedure TABLE A2.1 TABLE A2.2 TABLE A2.3
23	TABLE A2.4 TABLE A2.5 TABLE A2.6
24	A2.2 Interpretation of Nonparametric Results and Adequacy of Data TABLE A2.7 TABLE A2.8
25	TABLE A2.9 TABLE A2.10 TABLE A2.11
26	A2.3 Parametric Statistical Procedures
28	TABLE A2.12
29	A2.4 Combined-Variance for Intraphase Test
31	A3. SELECTION OF TEST BATCH SIZE (SECTION D – BIAS TESTING) A3.1 A3.2 A3.3 A3.4
32	A4. BIAS TESTING A MECHANICAL SAMPLING SYSTEM TABLE A4.1
33	A5. TEST METHOD FOR ESTIMATING THE OVERALL VARIANCE FOR INCREMENTS A5.1 Scope A5.2 Procedure A5.3 Calculation TABLE A5.1
34	TABLE A5.2
35	X1. TYPICAL MECHANICAL COAL SAMPLER CHECKLIST (SECTION A – MECHANICAL SAMPLING & SECTION C – QUALITY MANAGEMENT)
37	X2. MONITORING COAL SAMPLING RATIOS USING CONTROL CHARTS (SECTION A – MECHANICAL SAMPLING & SECTION C – QUALITY MANAGEMENT) X2.1 Scope X2.2 Rationale (Commentary) X2.3 Data Collection and Charting Procedure X2.4 Detection of Special Causes (Out-of-Control Conditions) FIG. X2.1
38	X2.5 Monitoring the Coefficient of Variation X2.6 Monitoring the Average Observed Sampling Ratio TABLE X2.1
39	X3. THEORETICAL CONSIDERATIONS AND SOURCES OF FORMULAS AND TABLES (SECTION D – BIAS TESTING) X3.1 X3.2 X3.3 X3.4
40	REFERENCES

Additional information

Standard Title	D7430-10b Standard Practice for Mechanical Sampling of Coal
Published Code	ASTM
Publication Date	2010
Pages Count	40
ICS Codes	75.160.10 - Solid fuels

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