Requirements for sample bombs? 2

[collism]

Does anyone know the requirements for sample bombs, particularly including dip tube requirements and usage?

Valve requirements on sample bombs and stations?

Expected safe normal working pressure and service life of a 1900 pound rupture disk?

Maintenance and documentation requirements?

Hydrostatic pressure information for liquid full bombs, ie.-pressures exerted on the rupture disk when the liquid contents of a liquid full bomb increases or expands?

 

[25362]

It is my feeling that sample bombs and other testing equipment would need special design as high pressure gas/liquid cylinders do. I'd contact a lab instrumentation manufacturer for more details.

 

[jmw]

For on-line continuous or discontinuous sampling equipment i would suggest visiting

http://www.jiskoot.com.

Jiskoot manufacture a range of equipment for the hydrocarbon industry including flow proportioning continuous sampling equipment and sample bombs.

I tried a google search and didn't get very far so this is the best i can do at the moment. Jiskoot is just one of a number of companies supplying sampling equipment to the marine fuel industry where other suppliers include DNV, Ashland Chemicals and Drew marine, Kittiwake Developments, Martechnic GmbH, Stanhope Deta Ltd, Unitor and Zematra BV.

Fuel sampling is quite often low pressure which may limit some of these companies, and often depends on pipe line pressure to cause the sample flow for fluid drip samplers.

I don't know the extent to which these others go beyond fuel sampling. Jiskoot can supply references to the relevant standards for sampling. You might also try a query on

http://www.viswalab.com,

one of the leading US test laboratories. They may be able to answer your questions with more detail.

 

[jsummerfield]

There are several ASTM applications. I have some of the ASTMs. Advise the type fluid, state and applicaton -- such as sweet pipeline gas at 1200 psig for custody transfer, etc.

John

 

[jsummerfield]

Long Post Follows with ASTMs Applicable to Samples
ASTM D1265-97 01-Nov-1997
Standard Practice for Sampling Liquefied Petroleum (LP) Gases (Manual Method)

Keywords: liquified petroleum gases; LPG; sampling

Description:
1. Scope
1.1 This practice covers the procedures for obtaining representative samples of liquefied petroleum gases such as propane, butane, or mixtures thereof, in containers other than those used in laboratory testing apparatus. These procedures are considered adequate for obtaining representative samples for all routine tests for LP gases required by Specification D1835 except analysis by Test Method D2163. They are not intended for obtaining samples to be used for compositional analysis. A sample procedure that avoids changes in composition must be used for compositional analysis. Note 1-Practice D3700 describes a recommended method for obtaining a representative sample of a hydrocarbon fluid and the subsequent preparation of that sample for laboratory analysis.


D37

Practice D3700-94 Standard Practice for Containing Hydrocarbon Fluid Samples Using a Floating Piston Cylinder
1. Scope
1.1 This practice describes equipment and a procedure for obtaining a representative sample of a homogeneous hydrocarbon fluid and the subsequent preparation of that sample for laboratory analysis.
1.2 It is not possible, nor is it the intent of this practice, to provide a procedure that will be applicable for all sampling situations. It is strongly recommended that the samples be obtained under the supervision of a person knowledgeable in the phase behavior of hydrocarbon systems and experienced in all sampling operations.
1.3 This practice does not include recommendations for the location of the sampling point in a line or vessel, although the importance of the proper sampling location cannot be over-emphasized.

ASTM D4057-95 01-Feb-1995
Standard Practice for Manual Sampling of Petroleum and Petroleum Products

Keywords: boring sampling; bottle/beaker sampling; core thief spot sampling; dipper sampling; extended tube sampling; grab sampling; grease sampling; marine custody transfer; sample containers; sample handling; sample labeling; sample mixing; sample shipment; sampling; sampling cage; static sampling; stand pipes; tap sampling; tube sampling

Description:
1. Scope
1.1 This practice covers procedures for manually obtaining representative samples of petroleum products of a liquid, semi-liquid, or solid state whose vapor pressure at ambient conditions is below 101 kPa (14.7 psia). If sampling is for the precise determination of volatility, use Practice D5842 in conjunction with this practice. For sample mixing and handling of samples, refer to Practice D5854. The practice does not cover sampling of electrical insulating oils and hydraulic fluids. A summary of the manual sampling procedures and their applications is presented in Table 1. Note 1-The procedures described in this method may also be applicable in sampling most noncorrosive liquid industrial chemicals, provided that all safety precautions specific to these chemicals are strictly followed. Note 2-The procedure for sampling liquified petroleum gases is described in Practice D1265; the procedure for sampling fluid power hydraulic fluids is covered in ANSI B93.19 and B93.44; the procedure for sampling insulating oils is described in Test Method D923; and the procedure for sampling natural gas is described in Test Method D1145. Note 3-The procedure for special fuel samples for trace metal analysis is described in an appendix to Specification D2880.

ASTM D4177-95 01-Feb-1995
Standard Practice for Automatic Sampling of Petroleum and Petroleum Products

Keywords: acceptance tests; automatic petroleum sampling; controllers; extractor; intermediate sampling receiver; isokinetic sampling; mixing elements; portable samplers; primary sample receiver; probe; representative sampling; representative sampling criteria; sampling handling; sample loop; sample mixing; stream conditioning

Description:
1. Scope
1.1 This practice covers information for the design, installation, testing, and operation of automated equipment for the extraction of representative samples of petroleum and petroleum products from a flowing stream and storing them in a sample receiver. If sampling is for the precise determination of volatility, use Practice D5842 in conjunction with this practice. For sample mixing, refer to Practice D5854. Petroleum products covered in this practice are considered to be a single phase and exhibit Newtonian characteristics at the point of sampling.
1.2 Applicable Fluids -This practice is applicable to petroleum and petroleum products with vapor pressures at sampling and storage temperatures less than or equal to 101 kPa (14.7 psi). Refer to D5842 when sampling for Reid vapor pressure (RVP) determination.
1.3 Non-applicable Fluids -Petroleum products whose vapor pressure at sampling and sample storage conditions are above 101 kPa (14.7 psi) and liquified gases (that is, LNG, LPG etc.) are not covered by this practice.
1.3.1 While the procedures covered by this practice will produce a representative sample of the flowing liquid into the sample receiver, specialized sample handling may be necessary to maintain sample integrity of more volatile materials at high temperatures or extended residence time in the receiver. Such handling requirements are not within the scope of this practice. Procedures for sampling these fluids are described in Practice D1265, Test Method D1145, and GPA 2166.
1.4 Annex A2 contains theoretical calculations for selecting the sampler location. Annex A3 lists acceptance methodologies for sampling systems and components. Annex A4 gives performance criteria for permanent installations, while Annex A5 has the criteria for portable sampling units. Appendix X1 is a design data sheet for automatic sampling systems; Appendix X2 compares the percent sediment and water to unloading time period

ASTM D5287-97 01-Nov-1997
Standard Practice for Automatic Sampling of Gaseous Fuels


Keywords: gaseous fuels

Description:
1. Scope
1.1 This practice covers the collection of natural gases and their synthetic equivalents using an automatic sampler.
1.2 This practice applies only to single-phase gas mixtures that vary in composition. A representative sample cannot be obtained from a two-phase stream.
1.3 This practice includes the selection, installation, and maintenance of automatic sampling systems.
1.4 This practice does not include the actual analysis of the acquired sample. Other applicable ASTM standards, such as Test Method D1945, should be referenced to acquire that information.
1.5 The selection of the sampling system is dependent on several interrelated factors. These factors include source dynamics, operating conditions, cleanliness of the source gases, potential presence of moisture and hydrocarbon liquids, and trace hazardous components. For clean, dry gas sources, steady source dynamics, and normal operating conditions, the system can be very simple. As the source dynamics become more complex and the potential for liquids increases, or trace hazardous components become present, the complexity of the system selected and its controlling logic must be increased. similarly, installation, operation, and maintenance procedures must take these dynamics into account.
1.6 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

ASTM D5854-96 01-Feb-1996
Standard Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products

Keywords: crude petroleum sampling; liquid petroleum sampling; sample containers; sample handling; sample mixing; sample preparation; sampling validation

Description:
1. Scope
1.1 This practice covers the handling, mixing, and conditioning procedures that are required to ensure that a representative sample of the liquid petroleum or petroleum product is delivered from the primary sample container/ receiver into the analytical test apparatus or into intermediate containers.
1.2 Annex A2 covers acceptance test criteria for power mixer and sample container combinations, while Annexes A3 and A4 detail acceptance tests for mixing systems. Appendix X1 is a guide for selecting sample containers.
1.3 For sampling procedures, refer to Practices D4057 and D4177. Practice D5842 covers sampling and handling of light fuels for volatility measurement.

.

John

 

[valder]

Sampling by pressure cylinder technique (ROV-operation) at a subsea wellhead:

Sampling is just for investigation of the salinity. What is the requirements to make a representative sample?