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Slack and Overload Rope Protection System.

Authors
Farley-HL; Fish-RB; Jeffcoat-RL; Hoadley-DL
Source
Available for Reference At Bureau Libraries :327 pages
Link
NIOSHTIC No.
10003314
Abstract
This report describes the development of an electronic system that detects unsafe slack and overload conditions in underground mine hoist ropes. The slack and overload rope protection system (sorps) includes a fail-safe load cell inserted between the rope and the conveyance and an accelerometer mounted on the conveyance. Signals from these transducers are telemetered via a radio link to the hoist control room where they are combined with drum speed and chair status in a microprocessor-based decision and display unit. Abnormally high external force levels are detected as discrepancies between rope and tension and cage acceleration; conveyance weight is inferred continuously. Hazardous conditions and general hoist status are displayed to the hoist operator. The system has been tested in a working mine for approximately 2 years. The report contains specifications, design data, and field test experience generated under the sorps program.
Publication Date
19830101
Document Type
CP; Final Contract Report;
Fiscal Year
1983
NTIS Accession No.
PB84-143460
NTIS Price
A16
Identifying No.
OFR 213-83
NIOSH Division
PRC;
Source Name
Available for Reference At Bureau Libraries
Performing Organization
Foster-Miller Associates Inc.
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