ASTM D1066-18
(Practice)Standard Practice for Sampling Steam
Standard Practice for Sampling Steam
SIGNIFICANCE AND USE
5.1 It is essential to extract and transport steam in a manner that provides the most representative sample of the process steam in order to accurately determine the amount of all impurities (dissolved chemicals, solid particles, chemicals absorbed on solid particles, water droplets) in it (1).3 An accurate measure of the purity of steam provides information that may be used to determine whether the purity of the steam is within necessary limits to prevent damage or deterioration (corrosion, solid particle erosion, flow-accelerated corrosion, and deposit buildup) of downstream equipment, such as turbines and process heat exchangers. The sources of impurities in the steam can include boiler water carryover, inefficient steam separators, natural salt solubility in the steam and other factors. The most commonly specified and analyzed parameters are sodium, silica, iron, copper, and cation conductivity.
SCOPE
1.1 This practice covers the sampling of saturated and superheated steam. It is applicable to steam produced in fossil fired and nuclear boilers or by any other process means that is at a pressure sufficiently above atmospheric to establish the flow of a representative sample. It is also applicable to steam at lower and subatmospheric pressures for which means must be provided to establish representative flow.
1.2 For information on specialized sampling equipment, tests or methods of analysis, reference should be made to the Annual Book of ASTM Standards, Vols 11.01 and 11.02, relating to water.
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D1066 − 18
Standard Practice for
1
Sampling Steam
This standard is issued under the fixed designation D1066; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope Stainless Steel Tubing for General Service
A335/A335M Specification for Seamless Ferritic Alloy-
1.1 This practice covers the sampling of saturated and
Steel Pipe for High-Temperature Service
superheated steam. It is applicable to steam produced in fossil
D1129 Terminology Relating to Water
fired and nuclear boilers or by any other process means that is
D3370 Practices for Sampling Water from Closed Conduits
at a pressure sufficiently above atmospheric to establish the
D5540 Practice for Flow Control and Temperature Control
flow of a representative sample. It is also applicable to steam at
for On-Line Water Sampling and Analysis
lower and subatmospheric pressures for which means must be
provided to establish representative flow.
3. Terminology
1.2 For information on specialized sampling equipment,
3.1 Definitions:
tests or methods of analysis, reference should be made to the
3.1.1 For definitions of terms used in this standard, refer to
Annual Book of ASTM Standards, Vols 11.01 and 11.02,
Terminology D1129.
relating to water.
3.2 Definitions of Terms Specific to This Standard:
1.3 The values stated in SI units are to be regarded as
3.2.1 isokinetic sampling, n—a condition wherein the
standard. The values given in parentheses are mathematical
sample entering the port (tip) of the sampling nozzle has the
conversions to inch-pound units that are provided for informa-
same velocity vector (velocity and direction) as the stream
tion only and are not considered standard.
being sampled.
1.4 This standard does not purport to address all of the
3.2.1.1 Discussion—Isokinetic sampling ensures a represen-
safety concerns, if any, associated with its use. It is the
tative sample of dissolved chemicals, solids, particles, chemi-
responsibility of the user of this standard to establish appro-
cals absorbed on solid particles, and in the case of saturated
priate safety, health, and environmental practices and deter-
and wet steam, water droplets are extrtacted from a process
mine the applicability of regulatory limitations prior to use.
stream.
1.5 This international standard was developed in accor-
3.2.2 sample cooler, n—a small heat exchanger designed to
dance with internationally recognized principles on standard-
provide cooling/condensing of process sampling streams of
ization established in the Decision on Principles for the
water or steam.
Development of International Standards, Guides and Recom-
3.2.3 sampling, n—the extraction of a representative portion
mendations issued by the World Trade Organization Technical
of the steam flowing in the boiler drum lead or pipeline by
Barriers to Trade (TBT) Committee.
means of a sampling nozzle and the delivery of this portion of
2. Referenced Documents
steam in a representative manner for analysis.
2
3.2.4 saturated steam, n—a vapor whose temperature cor-
2.1 ASTM Standards:
A269 Specification for Seamless and Welded Austenitic responds to the boiling water temperature at the particular
existing pressure.
3.2.5 superheated steam, n—a vapor whose temperature is
1
This practice is under the jurisdiction of ASTM Committee D19 on Water and
above the boiling water temperature at the particular existing
is the direct responsibility of Subcommittee D19.03 on Sampling Water and
Water-Formed Deposits, Analysis of Water for Power Generation and Process Use, pressure.
On-Line Water Analysis, and Surveillance of Water.
Current edition approved Aug. 1, 2018. Published August 2018. Originally
4. Summary of Practice
approved in 1949. Last previous edition approved in 2011 as D1066 – 11. DOI:
10.1520/D1066-18.
4.1 This practice describes the apparatus, design concepts,
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
and procedures to be used in extracting and transporting
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
samples of saturated and superheated steam. Sampling nozzle
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. selection and application, line sizing, condensing requirements
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D1066 − 18
FIG. 1 Effect of Non-Isokinetic Sampling
and optimization of
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D1066 − 11 D1066 − 18
Standard Practice for
1
Sampling Steam
This standard is issued under the fixed designation D1066; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This practice covers the sampling of saturated and superheated steam. It is applicable to steam produced in fossil fired and
nuclear boilers or by any other process means that is at a pressure sufficiently above atmospheric to establish the flow of a
representative sample. It is also applicable to steam at lower and subatmospheric pressures for which means must be provided to
establish representative flow.
1.2 For information on specialized sampling equipment, tests or methods of analysis, reference should be made to the Annual
Book of ASTM Standards, Vols 11.01 and 11.02, relating to water.
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information
only.mathematical conversions to inch-pound units that are provided for information only and are not considered standard.
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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
A269 Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service
A335/A335M Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
D1129 Terminology Relating to Water
D3370 Practices for Sampling Water from Closed Conduits
D5540 Practice for Flow Control and Temperature Control for On-Line Water Sampling and Analysis
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this practice,standard, refer to definitions given in Practice Terminology D1129.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 isokinetic sampling, n—a condition wherein the sample entering the port (tip) of the sampling nozzle has the same as the
velocity vector (velocity and direction) as the stream being sampled. Isokinetic sampling ensures a representative sample of
dissolved chemicals, solids, particles, chemicals absorbed on solid particles, and in the case of saturated and wet steam, water
droplets are obtained.
1
This practice is under the jurisdiction of ASTM Committee D19 on Water and is the direct responsibility of Subcommittee D19.03 on Sampling Water and Water-Formed
Deposits, Analysis of Water for Power Generation and Process Use, On-Line Water Analysis, and Surveillance of Water.
Current edition approved June 15, 2011Aug. 1, 2018. Published July 2011August 2018. Originally approved in 1949. Last previous edition approved in 20062011 as
D1066 – 06.D1066 – 11. DOI: 10.1520/D1066-11.10.1520/D1066-18.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3.2.1.1 Discussion—
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D1066 − 18
Isokinetic sampling ensures a representative sample of dissolved chemicals, solids, particles, chemicals absorbed on solid particles,
and in the case of saturated and wet steam, water droplets are extrtacted from a process stream.
3.2.2 sample cooler, n—a small heat exchanger designed to provide cooling/condensing of small process sampling streams of
water or steam.
3.2.3 sampling, n—the withdrawalextraction of a representative portion of the steam flowing in the boiler drum lead or pipeline
by means of a sampling nozzle and the delivery of this portion of steam
...
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