Inherent limitations of fixed-time, servo-controlled radiometric calorimetry

Conference · Thu Jan 01 00:00:00 EST 1987

OSTI ID:5723295

Wetzel, J R; Lemming, J F; Duff, M F

Interest has been shown in using fixed-time, servo-controlled calorimetry to shorten the measurement times for certain samples that require low precision values (3 to 5%). This type of calorimeter measurement could be particularly useful for screening scrap samples to determine whether there is a need for a more accurate measurement or for certain confirmatory measurements for which low precision numbers are sufficient. The equipment required for this type of measurement is a servo-controlled calorimeter and a preconditioning unit. Samples to be measured are placed in the preconditioning unit, which is maintained at the internal temperature of the calorimeter. The power value for the sample is determined at a fixed time after loading into the calorimeter, for example, 30 min. When a calorimeter is operated using a fixed cutoff time, there are additional sources of uncertainty that need to be considered. The major factors affecting the uncertainty of the calorimetry power values are discussed. 2 refs., 4 figs.

• Research Organization: Monsanto Research Corp., Miamisburg, OH (USA). Mound
• DOE Contract Number: AC04-76DP00053
• OSTI ID: 5723295
• Report Number(s): MLM-3467(OP); CONF-871110-18; ON: DE88003432
• Resource Relation: Conference: 3. international conference on facility operations safeguards interface, San Diego, CA, USA, 29 Nov 1987; Other Information: Paper copy only, copy does not permit microfiche production
• Country of Publication: United States
• Language: English

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