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Flight tests of NACA jet-propulsion exhaust stacks on the supermarine spitfire airplane

Description: Report presenting an investigation of the Supermarine Spitfire airplane equipped with exhaust stacks designed according to the jet-propulsion exhaust-stack system developed by the NACA. An increase in the high speed of the airplane of 6 mph was obtained as compared with the airplane equipped with the Rolls Royce exhaust system. Results regarding performance and exhaust-flame visibility are provided.
Date: December 1942
Creator: Turner, L. Richard & White, Maurice D.
Partner: UNT Libraries Government Documents Department

[Junebug in Grandpa's Barn]

Description: Photograph of a boy, Junebug Clark, hiding behind some haystacks in his grandfather's barn with a poem about hiding places is mounted next to it. In the image, the boy is hiding in the shadows looking away from the camera. Narrative by Junebug Clark: Grandpa's Barn. To Grandpa's barn - I'll run and race - To my secret - hiding place - hbss. Photo by: Joe Clark, HBSS. Signed by: Joe Clark, HBSS
Date: 195u
Creator: Clark, Joe
Partner: UNT Libraries Special Collections

Unabated emission source term estimate for the 340-NX stack

Description: This document contains the sampling procedure, analytical results, and source term estimate from sampling work conducted on the main stack for the 340 Facility`s vault ventilation system. Several air filter and carbon cartridges were collected upstream of the KI off-gas control modules in order to determine the challenge source terms associated with various operating modes (e.g., under routine waste storage, during waste mixing, during waste transfer, etc.)
Date: March 19, 1997
Creator: Stordeur, R.T. & Glissmeyer, J.A., Fluor Daniel Hanford
Partner: UNT Libraries Government Documents Department

Flame-visibility tests with individual exhaust stacks

Description: Report presenting testing made on a Wright 1820-G single-cylinder engine to determine the effect of operating variables and the effect of shape and size of the exhaust stack on the visibility of exhaust gases for individual-stack installations. Flame damping was improved by decrease in nozzle-exit area, increase in stack length, and reduction in hydraulic diameter of the exhaust jets. Results regarding the characteristics of exhaust flames and damping of exhaust flames are provided.
Date: February 1944
Creator: Turner, L. Richard & Humble, Leroy V.
Partner: UNT Libraries Government Documents Department

Flight Tests of Exhaust-Gas Jet Propulsion

Description: "Flight tests were conducted on the XP-41 airplane, equipped with a Pratt & Whitney R1830-19, 14-cylinder, air-cooled engine, to determine the increase in flight speed obtainable by the use of individual exhaust stacks directly rearwardly to obtain exhaust-gas thrust. Speed increases up to 13 miles per hour at 20,000 feet altitude were obtained using stacks having an exit area of 3.42 square inches for each cylinder. A slight increase in engine power and decrease in cylinder temperature at a given manifold pressure were obtained with the individual stacks as compared with a collector-ring installation" (p. 1).
Date: November 1940
Creator: Pinkel, Benjamin & Turner, L. Richard
Partner: UNT Libraries Government Documents Department

A reconsideration of the measurements with the O ring stack

Description: The measurements made this year of Rn entry to the O ring stack were interpreted to be diffusion through the urethane O rings; however the alternative hypothesis is that Rn was mainly entering the stack by leakage through a small hole. This note presents a calculation of diffusion from first principles and rederives the diffusion constant for the O ring stack measurements.
Date: September 1, 1996
Creator: Cleveland, B. T. & Rowley, J.K.
Partner: UNT Libraries Government Documents Department

Tank farm stack NESHAP designation determinations. Revision 2

Description: This document provides a determination of the status of Tank Farm Exhausters as regulated by the ``National Emission Standards for Hazardous Air Pollutants`` (NESHAP) specified in the 40 Series Code of Federal Regulations (CFRs), Part 61, Subpart H, ``National Emission Standards for Emissions of Radionuclides other than Radon from Department of Energy Facilities.``
Date: January 18, 1996
Creator: Crummel, G. M.
Partner: UNT Libraries Government Documents Department

Tritium Extraction Facility Stack Height Determination

Description: A good engineering practice (GEP) stack height has been determined for the Tritium Extraction Facility. Stack heights between 50 and 120 ft were analyzed to determine if there were any increased concentrations downwind due to building wake effects. Using EPAs `2 1/2 times rule`, a stack height of 100 ft was determined to be in accordance with GEP. Further detailed analysis of concentrations in the wake of a building demonstrate that a stack height of 90 ft is acceptable.
Date: January 1, 1998
Creator: Simpkins, A.A.
Partner: UNT Libraries Government Documents Department

296-B-13 stack monitoring and sampling system: Annual system assessment report

Description: This report presents the details of the annual system assessment of the air pollution monitoring and sampling system for the 296-13 stack at the Hanford site. Topics discussed include; system description, system status, system aging, spare parts considerations, long term maintenance plan, trends, and items requiring action.
Date: May 16, 1995
Creator: Ridge, T.M.
Partner: UNT Libraries Government Documents Department

Standard-D hydrogen monitoring system acceptance test

Description: This document details the results of the field Acceptance Testing of the Standard-D Hydrogen Monitoring System on the waste tank exhaust stacks in 241-AW and 241-AN tank farm. The monitors will be used to measure hydrogen and ammonia from the exhaust stacks.
Date: May 24, 1996
Creator: Lott, D.T., Westinghouse Hanford
Partner: UNT Libraries Government Documents Department

[Plant data for 200 Areas]

Description: This document provides data for 200 Area plants for the period of November 30, 1945 to June 10, 1946 (Building 292-B) and November 30, 1945 to August 22, 1946 (Building 292-T).
Date: August 31, 1945
Creator: Lindvig, P.E.
Partner: UNT Libraries Government Documents Department

Availability Analysis of the Ventilation Stack CAM Interlock System

Description: Ventilation Stack Continuous Air Monitor (CAM) Interlock System failure modes, failure frequencies and system availability have been evaluated for the RPP. The evaluation concludes that CAM availability is as high as assumed in the safety analysis and that the current routine system surveillance is adequate to maintain this availability. Further, requiring an alarm to actuate upon CAM failure is not necessary to maintain the availability credited in the safety analysis, nor is such an arrangement predicted to significantly improve system availability. However, if CAM failures were only detected by the 92-day functional tests required in the Authorization Basis (AB), CAM availability would be much less than that credited in the safety analysis. Therefore it is recommended that the current surveillance practice of daily simple system checks, 30-day source checks and 92-day functional tests be continued in order to maintain CAM availability.
Date: January 5, 2000
Creator: YOUNG, J.
Partner: UNT Libraries Government Documents Department

Seismic qualification of ventilation stack

Description: This paper describes the method to be used to qualify the 105 K ventilation stack at the U.S. Department of Energy`s Hanford Site, near Richland, Washington, under seismic and wind loadings. The stack stands at 175 ft (53.34 m), with a diameter tapering from 22 ft (6.71 m) at the foundation to 12.83 ft (3.91 m) at the top. Although the stack is classified as Safety Class 3 (low hazard), it is treated as a Safety Class 1 (high hazard) component, as failure could damage a Safety Class 1 facility (the irradiated fuel storage basin). The evaluation used U.S. Department of Energy criteria specified in UCRL 15910 (1990). The seismic responses of the stack under earthquake loading were obtained from modal analyses with response spectrum input that used the ANSYS (1989) finite-element computer code. The moments and shear forces from the results of seismic analysis were used to qualify the reinforcement capacity of the stack structure by the ultimate-strength method. The wind forces acting on the stack in both along-wind and crosswind directions were also calculated. Presented are evaluations of the soil bearing pressure, the moment, and the shear capacity of the stack foundation.
Date: October 1, 1993
Creator: Chen, W. W.; Huang, S. N. & Lindquist, M. R.
Partner: UNT Libraries Government Documents Department

296-B-5 Stack monitoring and sampling system annual system assessment report

Description: The B Plant Administration Manual requires an annual system assessment to evaluate and report the present condition of the sampling and monitoring system associated with Stack 296-B-5 at B Plant. The sampling and monitoring system associated with stack 296-B-5 is functional and performing satisfactorily. This document is an annual assessment report of the systems associated with the 296-B-5 stack.
Date: February 1995
Creator: Ridge, T. M.
Partner: UNT Libraries Government Documents Department

Definition and means of maintaining the effluent stack monitors portion of the PFP safety envelope

Description: The Effluent Stack Monitors ensure that the release of alpha emitting radionuclides to the environment via the building exhaust stacks is continuously monitored and alarms are initiated if the release exceeds identified limits. This document defines the safety envelope for the Effluent Stack Monitors and identifies the operability requirements, components, and procedures which ensure this safety envelope is maintained.
Date: January 21, 1997
Creator: Sullivan, P.J.
Partner: UNT Libraries Government Documents Department

Compliance program for 40 CFR 61, Subpart H at Los Alamos National Laboratory

Description: Effective on March 15, 1990, the Environmental Protection Agency established regulations controlling the emission of radionuclides to the air from Department of Energy facilities to limit the dose to the public to 10 mrem/yr. These regulations are detailed in 40 CFR 61, Subpart H, {open_quotes}National Emission Standards for Emissions of Radionuclides Other Than Radon from Department of Energy Facilities{close_quotes}. Part of these regulations require the operation of sampling systems on stacks meeting certain requirements. Although Los Alamos National Laboratory has a long history of stack sampling, the systems in place at the time the regulation became effective did not meet the specific design requirements of the new regulation. In addition, certain specific program elements did not exist or were not adequately documented. The Los Alamos National Laboratory has undertaken a major effort to upgrade its compliance program to meet the requirements of USEPA. This effort involved: developing new and technically superior sampling methods and obtaining approval from the Environmental Protection Agency for their use; negotiating specific methodologies with the Environmental Protection Agency to implement certain requirements of the regulation: implementing a complete, quality assured, compliance program; and upgrading sampling systems. After several years of effort, Los Alamos National Laboratory now meets all requirements of the USEPA.
Date: January 1, 1997
Creator: McNamara, E.A.
Partner: UNT Libraries Government Documents Department

Radiological engineering evaluation of the delay time line air scrubber located at the Clinton P. Anderson Meson Physics Facility (LAMPF)

Description: The purpose of this study was to determine the effects of the addition of an air scrubber to an already existing delay line and whether it would scrub {sup 11}CO{sub 2}. There were three main objectives of this study. The first objective was to determine the scrubbing efficiency of the scrubber. The scrubbing efficiency was then used to predict the dose rates in the scrubber area and compare those values with measurements from radiological surveys. The third objective was to determine if the shield blocks were effective in reducing the dose rates in the scrubber area. The activities were measured before and during scrubber operation and this information was used to calculate the scrubbing efficiency and the efficiency of {sup 11}CO{sub 2} removal was determined to be around 50%. Microshield was then used to predict dose rates and compared those values with measurements from radiological surveys. This was also used to determine the that the shield blocks around the scrubber were effective in reducing the dose rates from the radiation field produced by the radionuclides in the scrubber.
Date: May 1, 1996
Creator: Huneycutt, S. E.
Partner: UNT Libraries Government Documents Department

Qualification Tests for the Air Sampling System at the 296-Z-7 Stack

Description: This report documents tests performed to verify that the monitoring system for the 296-Z-7 ventilation stack meets the applicable regulatory criteria regarding the placement of the air sampling probe, sample transport, and stack flow measurement accuracy.
Date: October 15, 2001
Creator: Glissmeyer, John A & Maughan, A David
Partner: UNT Libraries Government Documents Department

Design validation of the PBFA-Z vacuum insulator stack

Description: Sandia has developed PBFA-Z, a 20-MA driver for z-pinch experiments by replacing the water lines, insulator stack. and MITLs on PBFA II with hardware of a new design. The PBFA-Z accelerator was designed to deliver 20 MA to a 15-mg z-pinch load in 100 ns. The accelerator was modeled using circuit codes to determine the time-dependent voltage and current waveforms at the input and output of the water lines, the insulator stack, and the MITLs. The design of the vacuum insulator stack was dictated by the drive voltage, the electric field stress and grading requirements, the water line and MITL interface requirements, and the machine operations and maintenance requirements. The insulator stack consists of four separate modules, each of a different design because of different voltage drive and hardware interface requirements. The shape of the components in each module, i.e., grading rings, insulator rings, flux excluders, anode and cathode conductors, and the design of the water line and MITL interfaces, were optimized by using the electrostatic analysis codes, ELECTRO and JASON. The time-dependent performance of the insulator stacks was evaluated using IVORY, a 2-D PIC code. This paper will describe the insulator stack design, present the results of the ELECTRO and IVORY analyses, and show the results of the stack measurements.
Date: July 1, 1997
Creator: Shoup, R.W.; Long, F. & Martin, T.H.
Partner: UNT Libraries Government Documents Department