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ASTM D887-13

Current Revision

Standard Practices for Sampling Water-Formed Deposits

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1.1 These practices cover the sampling of water-formed deposits for chemical, physical, biological, or radiological analysis. The practices cover both field and laboratory sampling. It also defines the various types of deposits. The following practices are included:

 

Sections

Practice A—Sampling Water-Formed Deposits From Tubing
 of Steam Generators and Heat Exchangers

8 to 10

Practice B—Sampling Water-Formed Deposits From Steam
 Turbines

11 to 14


1.2 The general procedures of selection and removal of deposits given here can be applied to a variety of surfaces that are subject to water-formed deposits. However, the investigator must resort to his individual experience and judgment in applying these procedures to his specific problem.

1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI 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 and health practices and determine the applicability of regulatory limitations prior to use. See Section 7, 9.8, 9.8.4.6, and 9.14 for specific hazards statements.


5.1 The goal of sampling is to obtain for analysis a portion of the whole that is representative. The most critical factors are the selection of sampling areas and number of samples, the method used for sampling, and the maintenance of the integrity of the sample prior to analysis. Analysis of water-formed deposits should give valuable information concerning cycle system chemistry, component corrosion, erosion, the failure mechanism, the need for chemical cleaning, the method of chemical cleaning, localized cycle corrosion, boiler carryover, flow patterns in a turbine, and the rate of radiation build-up. Some sources of water-formed deposits are cycle corrosion products, make-up water contaminants, and condenser cooling water contaminants.

SDO ASTM: ASTM International
Document Number D887
Publication Date Jan. 1, 2013
Language en - English
Page Count 8
Revision Level 13
Supercedes
Committee D19.03
Publish Date Document Id Type View
Jan. 1, 2013 D0887-13 Revision
May 1, 2008 D0887-08 Revision
July 1, 2022 D0887-13R22 Reaffirmation
June 10, 1999 D0887-82R99 Reaffirmation
Oct. 29, 1982 D0887-82R03E01 Reaffirmation