STP742

    Use of On-Line Atomic Absorption in a Power Plant Environment

    Published: Jan 1981


      Format Pages Price  
    PDF (208K) 11 $25   ADD TO CART
    Complete Source PDF (2.9M) 11 $55   ADD TO CART


    Abstract

    Westinghouse has been conducting a program to upgrade the purity of primary-loop cooling water in pressurized water reactor (PWR) nuclear power plants, and a method was needed to measure cationic impurities such as calcium, magnesium, and aluminum in the 0 to 10-ppb range. After examination of alternative methods, a Perkin-Elmer Model 5000 flameless atomic absorption (AA) unit with an AS-40 auto-sampler was selected and tested on line in a nonlaboratory, auxiliary building area of an operating nuclear power plant.

    Electrical isolation, dust and dirt protection, supplemental system cooling, and sample preconditioning all had to be provided to enable what is essentially a laboratory instrument to function in the more hostile plant environment. Some problems arose in the electronics of the spectrophotometer portion of the instrument, such as loss of preprogram instruction, multiple false readings, and loss of averaging functions. These problems were not of major proportions, however, and the system was able to track contamination levels through plant shutdown for refueling and consistently monitor impurities in the sub-parts-per-billion range. It has been shown that with the new automated flameless AA systems, high-quality analyses can be obtained on line and without the need of a highly trained spectroscopist as an operator.

    Keywords:

    analysis, composition, calcium, magnesium, aluminum, nuclear, power plants, atomic, absorption, primary, coolants, water, on line, water quality, instrumentation


    Author Information:

    Skriba, MC
    Manager, Nuclear Fuel Fabrication, and research engineer, Nuclear Fuel Processes, Westinghouse Research and Development Center, Pittsburgh, Pa.

    Gockley, GB
    Manager, Nuclear Fuel Fabrication, and research engineer, Nuclear Fuel Processes, Westinghouse Research and Development Center, Pittsburgh, Pa.

    Battaglia, JA
    Fellow engineer, Westinghouse Water Reactors Division, Nuclear Technology Div., Monroeville, Pa.


    Paper ID: STP28284S

    Committee/Subcommittee: D19.95

    DOI: 10.1520/STP28284S


    CrossRef ASTM International is a member of CrossRef.