ASTM D4177 : 15a

Standard Practice for Automatic Sampling of Petroleum and Petroleum Products

Standard Details

1.1 This practice describes general procedures and equipment for automatically obtaining samples of liquid petroleum and petroleum products, crude oils, and intermediate products from the sample point into the primary container. This practice also provides additional specific information about sample container selection, preparation, and sample handling. If sampling is for the precise determination of volatility, use Practice D5842 (API MPMS Chapter 8.4) in conjunction with this practice. For sample mixing and handling, refer to Practice D5854 (API MPMS Chapter 8.3). This practice does not cover sampling of electrical insulating oils and hydraulic fluids.

1.2 Table of Contents:

	Section
INTRODUCTION
Scope	1
Referenced Documents	2
Terminology	3
Significance and Use	4
PART I–GENERAL
Representative Sampling Components	5
Design Criteria	6
Automatic Sampling Systems	7
Sampling Location	8
Mixing of the Flowing Stream	9
Proportionality	10
Sample Extractor Grab Volume	11
Containers	12
Sample Handling and Mixing	13
Control Systems	14
Sample System Security	15
System Proving (Performance Acceptance Tests)	16
Performance Monitoring	17
PART II–CRUDE OIL
Crude Oil	18
PART III–REFINED PRODUCTS
Refined Products	19
KEYWORDS
Keywords	20
ANNEXES
Calculations of the Margin of Error based on Number of Sample Grabs	Annex A1
Theoretical Calculations for Selecting the Sampler Probe Location	Annex A2
Performance Criteria for Portable Sampling Units	Annex A3
Profile Performance Test	Annex A4
Sampler Acceptance Test Data	Annex A5
APPENDIXES
Design Data Sheet for Automatic Sampling System	Appendix X1
Comparisons of Percent Sediment and Water versus Unloading Time Period	Appendix X2

1.3 Units—The values stated in either SI units or US Customary (USC) units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. Except where there is no direct SI equivalent, such as for National Pipe Threads/diameters, or tubing.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.