Probe for optically monitoring progress of in-situ vitrification of soil

Patent · Fri Jan 01 00:00:00 EST 1988

OSTI ID:866677

Timmerman, Craig L ^[1]; Oma, Kenton H ^[1]; Davis, Karl C ^[1]

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1. Richland, WA

A detector system for sensing the progress of an ISV process along an expected path comprises multiple sensors each having an input port. The input ports are distributed along the expected path of the ISV process between a starting location and an expected ending location. Each sensor generates an electrical signal representative of the temperature in the vicinity of its input port. A signal processor is coupled to the sensors to receive an electrical signal generated by a sensor, and generate a signal which is encoded with information which identifies the sensor and whether the ISV process has reached the sensor's input port. A transmitter propagates the encoded signal. The signal processor and the transmitter are below ground at a location beyond the expected ending location of the ISV process in the direction from the starting location to the expected ending location. A signal receiver and a decoder are located above ground for receiving the encoded signal propagated by the transmitter, decoding the encoded signal and providing a human-perceptible indication of the progress of the ISV process.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• DOE Contract Number: AC06-76RL01830
• Assignee: Battelle Memorial Institute (Richland, WA)
• Patent Number(s): US 4762991
• OSTI ID: 866677
• Country of Publication: United States
• Language: English

Related Subjects

probe
optically
monitoring
progress
in-situ
vitrification
soil
detector
sensing
isv
process
expected
path
comprises
multiple
sensors
input
ports
distributed
starting
location
sensor
generates
electrical
signal
representative
temperature
vicinity
processor
coupled
receive
generated
generate
encoded
information
identifies
reached
transmitter
propagates
below
ground
direction
receiver
decoder
located
receiving
propagated
decoding
providing
human-perceptible
indication
signal receiver
situ vitrification
multiple sensors
in-situ vitrification
input ports
signal representative
signal processor
electrical signal
signal generated
below ground
coded signal
sensor generates
signal process
optically monitor
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