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DOI	10.2172/5267336
报告编号	LBL-8313; SAC-25
来源ID	OSTI_ID: 5267336
	Instrument evaluation, calibration, and installation for the heater experiments at Stripa
	Schrauf, T.; Pratt, H.; Simonson, E.; Hustrulid, W.; Nelson, P.; DuBois, A.; Binnall, E.; Haught, R.
英文摘要	Borehole instrumentation for the measurement of temperature, displacement, and stress was evaluated, modified, calibrated, and installed in an underground site at Stripa, Sweden where experiments are currently underway to investigate the suitability of granite as a storage medium for nuclear waste. Three arrays of borehole instrumentation measure the thermomechanical effects caused by electrical heaters which simulate the thermal output of canisters of radioactive waste. Because most rock mechanics investigations are carried out at modest temperatures, a sustained operating temperature as high as 200/sup 0/C was an unusual and most important criterion governing the instrumentation program. Extensive laboratory experiments were conducted to determine the effect of high temperature on instrument behavior and also to develop calibration and data-reduction procedures. The rod extensometers were tested for anchor creep, the selection of a suitable high-temperature pressurizing fluid, and the thermal stability of the grout. Four temperature corrections are incorporated into the data reduction of the USBM borehole deformation measurement: the bridge voltage offset correction, the change in calibration factor induced by temperature, and the thermal expansion of the gage and of the rock. The vibrating wire gages were calibrated in the laboratory by loading gages installed in a granite block at pressures up to 13 MPa and at temperatures ranging from 20/sup 0/ to 200/sup 0/C. Both the slope and offset of the response equation are corrected for temperature effects. Most thermocouples were calibrated in an oven at the field site. Thermocouples were emplaced with individual gages and into holes backfilled with sand or grout.
出版年	1979
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES ; 58 GEOSCIENCES ; GRANITES ; MECHANICAL PROPERTIES ; TEMPERATURE EFFECTS ; RADIOACTIVE WASTE DISPOSAL ; SIMULATION ; UNDERGROUND DISPOSAL ; BOREHOLES ; DISPLACEMENT RATES ; EXPERIMENTAL DATA ; EXTENSOMETERS ; FIELD TESTS ; HIGH TEMPERATURE ; HIGH-LEVEL RADIOACTIVE WASTES ; MECHANICAL EFFECTS ; ROCK MECHANICS ; STRESSES ; SWEDEN ; TEMPERATURE MEASUREMENT ; THERMAL EXPANSION ; THERMOCOUPLES ; CAVITIES ; DATA ; EUROPE ; EXPANSION ; IGNEOUS ROCKS ; INFORMATION ; MANAGEMENT ; MEASURING INSTRUMENTS ; NUMERICAL DATA ; PLUTONIC ROCKS ; RADIOACTIVE MATERIALS ; RADIOACTIVE WASTES ; ROCKS ; SCANDINAVIA ; TESTING ; WASTE DISPOSAL ; WASTE MANAGEMENT ; WASTES ; WESTERN EUROPE 052002* -- Nuclear Fuels-- Waste Disposal & Storage ; 580300 -- Mineralogy, Petrology, & Rock Mechanics-- (-1989)
URL	http://www.osti.gov/scitech/servlets/purl/5267336
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/262528
推荐引用方式 GB/T 7714	Schrauf, T.,Pratt, H.,Simonson, E.,et al. Instrument evaluation, calibration, and installation for the heater experiments at Stripa,1979.