ASTM D6301-03
(Practice)Standard Practice for the Collection of Samples of Filterable and Nonfilterable Matter in Water
Standard Practice for the Collection of Samples of Filterable and Nonfilterable Matter in Water
SIGNIFICANCE AND USE
The transport of any filterable matter or corrosion products from the preboiler cycle has been shown to be detrimental to all types of steam generating equipment. Corrosion product transport as low as 10 ppb can have significant impact on steam generators performance.
Deposited corrosion products on PWR steam generator tubes can reduce heat transfer, and, if the deposit is sufficiently thick, can provide a local area for impurities in the bulk water to concentrate, resulting in a corrosive environment. In BWR plants, the transport of corrosion products can cause fuel failure, out of core radiation problems from activation reactions, and other material related problems.
In fossil plants, the transport of corrosion products can reduce heat transfer in the boilers leading to tube failures from overheating. The removal of these corrosion products by chemical cleaning is expensive and potentially harmful to the boiler tubes.
Normally, grab samples are not sensitive enough to detect changes in the level of corrosion product transport. Also, system transients may be missed by only taking grab samples. An integrated sample over time will increase the sensitivity for detecting the corrosion products and provide a better understanding of the total corrosion product transport to steam generators.
SCOPE
1.1 This practice is applicable for sampling condensed steam or water, such as boiler feedwater, for the collection of filterable and (optional) nonfilterable matter using 0.45-m membrane filter (filterable matter) and ion exchange media (nonfilterable matter). As the major filterable containment found in most boiler feedwaters is some form of corrosion product from the preboiler system, the device used for this practice is commonly called a corrosion product sampler.
1.2 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.
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Standards Content (Sample)
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Designation: D 6301 – 03
Standard Practice for
the Collection of Samples of Filterable and Nonfilterable
1
Matter in Water
This standard is issued under the fixed designation D 6301; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Terminology
1.1 This practice is applicable for sampling condensed 3.1 Definitions—For definitions of terms used in this prac-
steam or water, such as boiler feedwater, for the collection of tice, refer to Terminology D 1129.
filterable and (optional) nonfilterable matter using 0.45-µm 3.2 Definitions of Terms Specific to This Standard:
membrane filter (filterable matter) and ion exchange media 3.2.1 corrosion product sampler, n—a device used to col-
(nonfilterable matter). As the major filterable containment lect integrated samples of filterable and (as an option) nonfil-
found in most boiler feedwaters is some form of corrosion terable matter. It consists of a flow totalizer that accurately
product from the preboiler system, the device used for this measures the amount of sample passing through the device and
practice is commonly called a corrosion product sampler. a 0.45-µm pore size membrane filter.Adding a second filter for
1.2 This standard does not purport to address all of the ion exchange resin impregnated membranes allows for collect-
safety concerns, if any, associated with its use. It is the ing nonfilterable matter.
responsibility of the user of this standard to establish appro- 3.2.2 filterable matter, n—includes all matter that is re-
priate safety and health practices and determine the applica- moved by a 0.45-µm pore size filter.
bility of regulatory limitations prior to use. 3.2.3 nonfilterable matter, n—includes all matter that will
pass through a 0.45-µm pore size filter and may be captured on
2. Referenced Documents
anion, or cation ion exchange membranes, or both.
2
2.1 ASTM Standards:
4. Summary of Practice
D 1066 Practice for Sampling Steam
D 1129 Terminology Relating to Water 4.1 A typical sampling apparatus, or corrosion product
D 1192 Guide for Equipment for Sampling Water and sampler, is used to obtain integrated, representative samples of
Steam in Closed Conduits filterable and nonfilterable matter using a 0.45-µm membrane
D 1193 Specification for Reagent Water filter and ion exchange membranes. The sampling is accom-
D 1971 Practices for Digestion of Water Samples for De- plished at system operating pressure or after pressure reduc-
termination of Metals by Flame Atomic Absorption, tion, and sample temperature of#50°C.The practice utilizes a
Graphite Furnace Atomic Absorption, Plasma Emission modified stainless steel high pressure filter housing to accom-
Spectroscopy, or Plasma Mass Spectrometry modate a 47-mm diameter filter (for filterable matter) and if
D 2332 Practice for Analysis of Water-Formed Deposits by desired, ion exchange membranes (for nonfilterable matter).
Wavelength-Dispersive X-Ray Fluorescence The sample collection system (corrosion product sampler) is
D 2777 Practice for Determination of Precision and Bias of designedandoperatedspecificallyforquantitativecollectionof
Applicable Methods of Committee D19 on Water filterable and nonfilterable matter. An important feature of the
D 3370 Practice for Sampling Water from Closed Conduits sampler is the flow totalizer, which accurately determines the
D 3864 Guide for Continual On-Line Monitoring Systems total volume of sample that has passed through the sampler,
for Water Analysis regardless of changes in flowrate or pressure during the
collection period. Control and pressure reducing valves and
metering devices are downstream of the filter housing to
1
This practice is under the jurisdiction ofASTM Committee D19 on Water and
eliminate the possible contribution of filterable and nonfilter-
is the direct responsibility of Subcommittee D19.03 on Sampling of Water and
able matter from these components to the sample stream.
Water-formed Deposits, Analysis of Water for Power Generation and Process Use,
On-Line Water Analysis, and Surveillance of Water.
Additional flow may bypass the filter housing, so that flows
Current edition approved Aug. 10, 2003. Published September 2003. Originally
within the sample lines are maintained within required range
approved in 1998. Last previous edition approved in 1998 as D 6301 – 98.
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.
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