Remote calibration of Resistance Temperature Devices (RTDs): Final report
Johnson noise power measuring techniques have been used to calibrate platinum resistance temperature detectors (RTDs) installed in an operating nuclear plant - Connecticut Yankee Atomic Power Company's Haddam Neck Nuclear Plant - achieving agreement with the dc calibration from better than 0.1% to as much as 1% (0.54 to 9.7/sup 0/F) at the normal operating temperature of 585/sup 0/F. Tests were also conducted at plant shutdown conditions. In this application, RTDs with an ice point resistance of 200 ..cap omega.. were connected with four-wire extension cables approximately 100-ft long to a test station in containment. Methods were developed for in situ characterization of the extension cables and for quantitative measurement of and correction for nonthermal induced noise. Analysis of dc calibration methods showed that resistance-temperature tables used with industrial PRTs may be in error by 0.2/sup 0/F or 0.02% A (expressed as a percentage of absolute temperature in either Kelvin or degrees Rankine) at 540/sup 0/F. Recalibration of the RTDs measured in the plant tests showed differences of about 2.5/sup 0/F or 0.2% A at 540/sup 0/F from calibration tables used in the plant.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5579430
- Report Number(s):
- EPRI-NP-5537; ON: DE88006381
- Country of Publication:
- United States
- Language:
- English
Similar Records
Performance of nuclear plant RTDs
Confirmatory Survey Results for the Emergency Operations Facility (EOF) at the Connecticut Yankee Haddam Neck Plant, Haddam, Connecticut
Related Subjects
210200 -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
22 GENERAL STUDIES OF NUCLEAR REACTORS
220400* -- Nuclear Reactor Technology-- Control Systems
ACCURACY
CALIBRATION
DOCUMENT TYPES
MEASURING INSTRUMENTS
NOISE
PROGRESS REPORT
PWR TYPE REACTORS
REACTOR INSTRUMENTATION
REACTORS
SEMICONDUCTOR DEVICES
THERMISTORS
THERMOMETERS
WATER COOLED REACTORS
WATER MODERATED REACTORS