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Nuclear Gages for Monitoring the Coalbed of Commercial-scale Pressurized Gas Producers.

Authors
Friggens-GR; Hall-AW
Source
NTIS: PB 224 509 :9 pages
Link
NIOSHTIC No.
10009059
Abstract
A nuclear method for continuously monitoring the coalbed and ash levels and void formation in commercial-scale, fixed-bed, pressurized gas producers is proposed. Measurement of gamma ray transmission through the coalbed is the basis of the method. The coalbed level is monitored by detecting the transmission of gamma rays from a 1 to 2 ci co-60 source positioned on the outside wall of the vessel. Coal bridging or, alternatively, ash level is monitored by a 10 ci co-60 source at the center of the coalbed. Source activities and geometries are calculated for a 12-foot-id producer designed to operate at 350 psi. Source capsule and detector specifications and operational safety are also discussed.
Publication Date
19730101
Document Type
IH; Report of Investigation;
Fiscal Year
1973
NTIS Accession No.
PB-224509
NTIS Price
A02
Identifying No.
RI 7793
NIOSH Division
MERC;
Source Name
NTIS: PB 224 509
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