NWT developed the PWR/Q-Chem program in late 1984 to provide utilities with a method to validate their analytical procedures and to assess their laboratory capabilities relative to those of other utilities by analysis of blind samples. In mid-1987 NWT developed BWR/Q-Chem to provide a similar service for BWRs. Both programs are supportive of the objectives outlined for spiked samples in INPO Good Practices CY-701, "Chemistry Quality Control Program," INPO 83-016, Rev. 2, August 1989, CY-702, "Verification of Analytical Performance," INPO 83-107, Rev. 1, November 1985, the laboratory performance guidelines and blind sample program in "Guidelines for Chemistry at Nuclear Power Stations," INPO 88-021, Rev. 1, September 1991, and "Guidelines for Chemistry at Nuclear Power Stations," INPO 88-021, Rev. 2, October 1995.
 
BWR/Q-Chem sample matrices and concentration ranges are shown below. Sample sets are provided on a quarterly basis. Each quarterly sample set consists of three 250 ml bottles containing identical mixtures of chloride, sulfate, and silica at concentrations typical for reactor water. In addition, two other species selected from the sample description table are provided as unknowns. These additional samples also are provided in triplicate. A backup aliquot of each sample is included in the original shipping container for return to NWT in the event concerns arise relative to the effects of sample shipment. After sample analysis, each utility summarizes its results and analysis techniques on a provided form and returns it to NWT.
 
Results can be submitted to NWT using the report form. When the results have been received, a quarterly report is issued summarizing and discussing utility results and the techniques employed for each analysis. Q-Chem participants are identified by a letter in the report and the letter designation for each laboratory is disclosed only in its report transmittal letter.
 
The cost of the basic NWT BWR/Q-Chem program is shown in the subscription form. Additional sample sets may also be acquired.
 
NWT also has developed custom programs for several utilities. If the standard Q-Chem program does not fulfill all of your needs, we will work with you to establish a more responsive program. Please see the Custom Q-Chem Samples page.
 
Questions regarding the Q-Chem program should be directed to Mike Miller or Mary Hyde at (408) 281-1100 or lab@nwtcorp.com.
 
 
Subscription Forms
 

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Report Form
 

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BWR/Q-Chem Sample Description

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