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in subjects: "Ventilation Systems"  
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Estimating large-scale fractured rock properties from radon data collected in a ventilated tunnel

Description: To address regulatory issues regarding worker safety, radon gas concentrations have been monitored as part of the operation of a deep tunnel excavated from a highly fractured tuff formation. The objective of this study was to examine the potential use of the radon data to estimate large-scale formation properties of fractured rock. An iTOUGH2 model was developed to predict radon concentrations for prescribed ventilation rates. The numerical model was used (1) to estimate the permeability and po… more
Date: May 12, 2003
Creator: Unger, Andre; Finsterle, Stefan & Bodvarsson, Gudmundur S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The Kelastic variable wall mining machine. Interim final report

Description: This machine cuts coal along a longwall face extending up to 500 feet by a rotating auger with bits. The machine also transports the coal that is cut acting as screw conveyor. By virtue of an integral shroud comprising part of the conveyor the machine is also amenable to a separation of the zones where men work from air being contaminated by dust and methane gas by the cutting action. Beginning as single intake air courses, the air separates at the working section where one split provides fresh… more
Date: November 12, 1995
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Technical Assessment: WRAP 1 HVAC Passive Shutdown

Description: As the result of careful interpretation of DOE Order 6430.lA and other DOE Orders, the HVAC system for WRAP 1 has been greatly simplified. The HVAC system is now designed to safely shut down to Passive State if power fails for any reason. The fans cease functioning, allowing the Zone 1 and Zone 2 HVAC Confinement Systems to breathe with respect to atmospheric pressure changes. Simplifying the HVAC system avoided overdesign. Construction costs were reduced by eliminating unnecessary equipment. T… more
Date: August 12, 1993
Creator: Ball, D. E.; Nash, C. R. & Stroup, J. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Project W-320 high vacuum 241-AY-102 annulus ventilation system operability test report

Description: This report documents the test results of OTP-320-001, Tank 241-AY-102 Annulus Ventilation System Testing. Included in the appendices are: (1) Supporting documentation prepared to demonstrate the structural integrity of the tank at high annulus vacuum (<20 INWG), and (2) a report that identifies potential cross connections between the primary and annulus ventilation systems. These cross connections were verified to be eliminated prior to the start of testing.
Date: March 12, 1998
Creator: Bailey, J. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Waste Emplacement/Retrieval System Description Document

Description: The Waste Emplacement/Retrieval System transports Waste Packages (WPs) from the Waste Handling Building (WHB) to the subsurface area of emplacement, and emplaces the WPs once there. The system also, if necessary, removes some or all of the WPs from the underground and transports them to the surface. Lastly, the system is designed to remediate abnormal events involving the portions of the system supporting emplacement or retrieval. During emplacement operations, the system operates on the surfac… more
Date: October 12, 2000
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Subsurface Ventilation System Description Document

Description: The Subsurface Ventilation System supports the construction and operation of the subsurface repository by providing air for personnel and equipment and temperature control for the underground areas. Although the system is located underground, some equipment and features may be housed or located above ground. The system ventilates the underground by providing ambient air from the surface throughout the subsurface development and emplacement areas. The system provides fresh air for a safe work en… more
Date: October 12, 2000
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Load calculation and system evaluation for electric vehicle climate control

Description: This paper presents an analysis of the applicability of alternative systems for electric vehicle (EV) heating and air conditioning (HVAC). The paper consists of two parts. The first part is a cooling and heating load calculation for electric vehicles. The second part is an evaluation of several systems that can provide the desired cooling and heating in EVs. These systems are ranked according to their overall weight The overall weight is calculated by adding the system weight and the weight of … more
Date: September 12, 1994
Creator: Aceves, S. M. & Comfort, W. J., III
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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