Continuous Working-level Measurements Using Alpha Or Beta Detectors
| Author | : Robert F. Droullard |
| Publisher | : |
| Total Pages | : 24 |
| Release | : 1977 |
| Genre | : Mine safety |
| ISBN | : |
Continuous Working Level Measurements Using Alpha Or Beta Detectors
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Continuous working-level measurements using alpha or beta detectors
| Author | : Robert F. Droullard |
| Publisher | : |
| Total Pages | : 24 |
| Release | : 1977 |
| Genre | : Government publications |
| ISBN | : |
Continuous Radiation Working-level Detectors
| Author | : Robert F. Droullard |
| Publisher | : |
| Total Pages | : 28 |
| Release | : 1985 |
| Genre | : Mine gases |
| ISBN | : |
The Bureau of Mines has used gross alpha and gross beta detectors to continuously measure radiation working levels for a number of years. During this time, improvements have been made in the design and performance of continuous working-level (CWL) detectors. This report discusses the improved designs and some of the operating principles and applications of CWL detectors in the measurement of radon daughter products in mines and dwellings.
Monthly Catalog of United States Government Publications
| Author | : United States. Superintendent of Documents |
| Publisher | : |
| Total Pages | : 1092 |
| Release | : 1977 |
| Genre | : Government publications |
| ISBN | : |
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Two-measurement Methods for Working-level Determination of Radon Daughters, a Theoretical Study
| Author | : Robert F. Holub |
| Publisher | : |
| Total Pages | : 60 |
| Release | : 1980 |
| Genre | : Government publications |
| ISBN | : |
List of Bureau of Mines Publications and Articles ... with Subject and Author Index
| Author | : United States. Bureau of Mines |
| Publisher | : |
| Total Pages | : 576 |
| Release | : |
| Genre | : Mineral industries |
| ISBN | : |
Alarm System for Radiation Working Level, Fan Operation, and Air Door Position
| Author | : |
| Publisher | : |
| Total Pages | : 28 |
| Release | : 1982 |
| Genre | : Electronic alarm systems |
| ISBN | : |
A 32-channel continuous monitoring system has been developed to monitor radiation working level (WL), fan operation, and air door position. The system consists of a surface receiver unit and an underground transmitter that is connected to the various monitors. A continuous WL monitor used with the system can generate alarms at two different WL readings. One of these levels is variable from 0.00 to 0.99 WL and generates an alarm on the surface receiver. The other level, fixed at 1.0 WL, generates an underground alarm in the vicinity of the monitor. The detectors for fan operation and air door position work on the principle of a completed circuit to the underground transmitter (multiplexer). When the circuit is broken, as is the case when a fan is off or an air door is open, an alarm is generated at the surface receiver. This alarm remains in effect until the circuit is completed, signifying the fan has been turned on or the air door has been closed.
