ASTM D1066-11
(Practice)Standard Practice for Sampling Steam
Standard Practice for Sampling Steam
SIGNIFICANCE AND USE
It is essential to sample steam representatively in order to determine the amount of all impurities (dissolved chemicals, solid particles, chemicals absorbed on solid particles, water droplets) in it (1). An accurate measure of the purity of steam provides information, which 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. Impurities in the steam may be derived from 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 for information only.
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.
General Information
Relations
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 − 11
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 3. Terminology
1.1 This practice covers the sampling of saturated and
3.1 Definitions:
superheated steam. It is applicable to steam produced in fossil
3.1.1 For definitions of terms used in this practice, refer to
fired and nuclear boilers or by any other process means that is
definitions given in Practice D1129.
at a pressure sufficiently above atmospheric to establish the
3.2 Definitions of Terms Specific to This Standard:
flow of a representative sample. It is also applicable to steam at
3.2.1 isokinetic sampling, n—a condition wherein the
lower and subatmospheric pressures for which means must be
sample entering the port (tip) of the sampling nozzle has the
provided to establish representative flow.
same as the velocity vector (velocity and direction) as the
1.2 For information on specialized sampling equipment,
stream being sampled. Isokinetic sampling ensures a represen-
tests or methods of analysis, reference should be made to the
tative sample of dissolved chemicals, solids, particles, chemi-
Annual Book of ASTM Standards, Vols 11.01 and 11.02,
cals absorbed on solid particles, and in the case of saturated
relating to water.
and wet steam, water droplets are obtained.
1.3 The values stated in SI units are to be regarded as
3.2.2 sample cooler, n—a small heat exchanger designed to
standard. The values given in parentheses are for information
provide cooling/condensing of small process sampling streams
only.
of water or steam.
1.4 This standard does not purport to address all of the
3.2.3 sampling, n—the withdrawal of a representative por-
safety concerns, if any, associated with its use. It is the
tion of the steam flowing in the boiler drum lead or pipeline by
responsibility of the user of this standard to establish appro-
means of a sampling nozzle and the delivery of this portion of
priate safety and health practices and determine the applica-
steam in a representative manner for analysis.
bility of regulatory limitations prior to use.
3.2.4 saturated steam, n—a vapor whose temperature cor-
2. Referenced Documents
responds to the boiling water temperature at the particular
2
2.1 ASTM Standards: existing pressure.
A269 Specification for Seamless and Welded Austenitic
3.2.5 superheated steam, n—a vapor whose temperature is
Stainless Steel Tubing for General Service
above the boiling water temperature at the particular existing
A335/A335M Specification for Seamless Ferritic Alloy-
pressure.
Steel Pipe for High-Temperature Service
D1129 Terminology Relating to Water
4. Summary of Practice
D3370 Practices for Sampling Water from Closed Conduits
4.1 This practice describes the apparatus, design concepts
D5540 Practice for Flow Control and Temperature Control
for On-Line Water Sampling and Analysis and procedures to be used in extracting and transporting
samples of saturated and superheated steam. Extraction nozzle
selection and application, line sizing, condensing requirements
1
This practice is under the jurisdiction of ASTM Committee D19 on Water and
and optimization of flow rates are all described. Condensed
is the direct responsibility of Subcommittee D19.03 on Sampling Water and
steam samples should be handled in accordance with Practices
Water-Formed Deposits, Analysis of Water for Power Generation and Process Use,
D3370 and D5540.
On-Line Water Analysis, and Surveillance of Water.
Current edition approved June 15, 2011. Published July 2011. Originally
approved in 1949. Last previous edition approved in 2006 as D1066 – 06. DOI:
5. Significance and Use
10.1520/D1066-11.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.1 It is essential to sample steam representatively in order
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
to determine the amount of all impurities (dissolved chemicals,
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. solid particles, chemicals absorbed on solid particles, water
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D1066 − 11
FIG. 1 Effect of Non-Isokinetic Sampling
3
droplets) in it (1). An accurate measure of the purity of steam prior to reaching the sample station. Partially or fully c
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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.
An American National Standard
Designation:D1066–06 Designation: D1066 – 11
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.
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.
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.
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 D1192Guide for Equipment for Sampling Water and Steam in Closed Conduits
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, refer to definitions given in Practice D1129.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 isokinetic sampling (representative sampling)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.
3.2.2 sample coolersample cooler, n—a small heat exchanger designed to provide cooling/condensing of small process
sampling streams of water or steam.
3.2.3 samplingsampling, n—the withdrawal 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 in a representative manner for analysis.
3.2.4 saturated steamsaturated steam, n—a vapor whose temperature corresponds to the boiling water temperature at the
particular existing pressure.
3.2.5 superheated steamsuperheated steam, n—a vapor whose temperature is above the boiling water temperature at the
particular existing pressure.
1
This practice is under the jurisdiction of ASTM Committee D19 on Water,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 Dec. 15, 2006. Published January 2007. Originally approved in 1949. Last previous edition approved in 2001 as D1066–97 (2001). DOI:
10.1520/D1066-06.
Current edition approved June 15, 2011. Published July 2011. Originally approved in 1949. Last previous edition approved in 2006 as D1066 – 06. DOI:
10.1520/D1066-11.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D1066 – 11
4. Summary of Practice
4.1 This practice describes the apparatus, design concepts and procedures to be used in extracting and transporting samples of
saturated and superheated steam. Extraction nozzle
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.