scholarly journals EDS Containment Vessel Explosive Test and Analysis

2016 ◽  
Author(s):  
Robert W. Crocker ◽  
Brent L. Haroldsen ◽  
Jerome H. Stofleth ◽  
Mien Yip
Keyword(s):  
New Mexico ◽  
Pressure Vessel ◽  
The Other ◽  
Containment Vessel ◽  
Tnt Equivalent ◽  
Vessel Response

This report documents the results of two of tests that were performed on an explosive containment vessel at Sandia National Laboratories in Albuquerque, New Mexico in July 2013 to provide some deeper understanding of the effects of charge geometry on the vessel response [1]. The vessel was fabricated under Code Case 2564 of the ASME Boiler and Pressure Vessel Code, which provides rules for the design of impulsively loaded vessels [2]. The explosive rating for the vessel, based on the Code Case, is nine (9) pounds TNT-equivalent. One explosive test consisted of a single, centrally located, 7.2 pound bare charge of Composition C-4 (equivalent to 9 pounds TNT). The other test used six each 1.2 pound charges of Composition C-4 (7.2 pounds total) distributed in two bays of three.

scholarly journals EDS Containment Vessel TNT Equivalence Testing

2017 ◽  
Author(s):  
Robert W. Crocker ◽  
Brent L. Haroldsen ◽  
Jerome H. Stofleth
Keyword(s):  
Free Volume ◽  
Pressure Vessel ◽  
Project Manager ◽  
Equivalence Testing ◽  
Phase 2 ◽  
Containment Vessel ◽  
Tnt Equivalent ◽  
Vessel Response ◽  
Tnt Equivalence ◽  
Explosive Destruction

The V26 containment vessel was procured by the Project Manager, Non-Stockpile Chemical Materiel (PMNSCM) for use on the Phase-2 Explosive Destruction Systems. It was fabricated under Code Case 2564 of the ASME Boiler and Pressure Vessel Code, which provides rules for the design of impulsively loaded vessels [1]. The explosive rating for the vessel, based on the Code Case, is nine (9) pounds TNT-equivalent for up to 637 detonations. This report documents the results of tests that were performed on the vessel at Sandia National Laboratories to qualify the vessel for explosive use [2]. Three of these explosive tests consisted of: (1) 9lbs bare charge of Composition C-4 (equivalent to 11.25lbs TNT); (2) a 7.2lbs bare charge of Composition C-4 (equivalent to 9lbs TNT); (3) a bare charge of 9lbs cast TNT. The results of these tests are compared in order to provide an understanding of how varying charge size affects vessel response when the ratio of free volume to charge volume is small, and in making direct comparisons between TNT and Composition C-4 for TNT equivalency calculations. In a previous paper [3], the 7.2lbs bare charge of Composition C-4, (2) above, was compared to 7.2lbs of Composition C-4 distributed into 6 charges.

NOTES ON NEW MEXICO BEES

1900 ◽  
Vol 32 (12) ◽  
pp. 361-364
Author(s):  
T. D. A. Cockerell
Keyword(s):  
New Mexico ◽  
Hind Tibia ◽  
The Other ◽  
The Third ◽  
Central Depression ◽  
The Face

Bombomelecta larreœ, n. sp.♀.—Length 12½ mm.; general build and structure of B. thoracica, but the scutellum is convex with a central depression, and wholly without spines; while the claws have the inner division short and broadly truncate. The maxillary palpi are 6-jointed, and the mandibles have a strong tooth on the inner side. Black; pubescence of the face and vertex pale brown; of the occiput, labrum and clypeus, black; of the pleura, metathorax and scutellum, black; of the post-scurtellum, yellowish, especially noticeable at the sides; of the mesothorax, orange-fulvous, short, dense and conspicuous in front, thin behind. Abdomen with broad but inconspicuous ochreous bands on segments 2 to 4, more or less interrupted in the middle on 2 and 4, represented on the first segment by lateral patches, and a few ochreous hairs even in the middle; fifth segment with black hairs. Antennæ entirely black, apex truncate, the corners of the truncation rounded. Legs black, with black pubescence; spurs black, hind spur of hind tibia larger than the other, and somewhat bent. Wings dark fuliginous, with hyaline patches on the third transverso-cubital and second recurrent nervures; venation resembling that of B. thoracica, var. fulvida, except that the first recurrent nervure joins the second submarginal cell almost at its apex.

Fitness-for-Service Assessment for Pressure Equipment in Japan

2003 ◽  
Author(s):  
Takayasu Tahara
Keyword(s):  
High Pressure ◽  
Pressure Vessel ◽  
Working Group ◽  
Pressure Vessels ◽  
The Other ◽  
Task Group ◽  
Assessment Procedure ◽  
Storage Tanks ◽  
Task Groups ◽  
Petrochemical Industries

Pressure equipment in refinery and petrochemical industries in Japan has been getting old, mostly more than 30 years in operation. Currently, the Japanese regulations for pressure equipment in service are the same as those in existence during the fabrication of the pressure equipment. Accordingly, there is an immediate need for an up to date more advanced “Fitness For Service” (FFS) evaluation requirements for pressure equipment. In order to introduce the latest FFS methodologies to Japanese industries, the High Pressure Institute of Japan (HPI) has organized two task groups. One is a working group for development of a maintenance standard for non-nuclear industries. Its prescribed code “Assessment procedure for crack-like flaws in pressure equipment” is for conducting quantitative safety evaluations of flaws detected in common pressure equipment such as pressure vessels, piping, storage tanks. The other is a special task group to study of API RP579 from its drafting stage as a member of TG579. The FFS Handbook, especially for refinery and petrochemical industries, has been developed based on API RP579 with several modifications to meet Japanese pressure vessel regulations on April 2001. [1] It is expected that both the Standard and FFS handbook will be used as an exemplified standard with Japanese regulations for practical maintenance. This paper presents concepts of “Assessment procedure for crack-like flaws in pressure equipment” HPIS Z101, 2001 [2].

Taxonomy and variability of three Texigryphaea (Bivalvia) species from their Lower Cretaceous (Albian) type localities in New Mexico and Oklahoma

1989 ◽  
Vol 63 (4) ◽  
pp. 454-483 ◽  
Author(s):  
Barry S. Kues
Keyword(s):  
New Mexico ◽  
Local Variation ◽  
Morphological Characters ◽  
The Other ◽  
Ontogenetic Changes ◽  
Free Living ◽  
Marine Communities ◽  
West Texas ◽  
Turbulence Length ◽  
Group Species

The benthic, free-living oyster Texigryphaea was the dominant constituent of many late Albian marine communities in the Texas and southern Western Interior regions. Large topotypic assemblages of three common lower–middle Washita Group species (T. navia and T. pitcheri in Oklahoma and T. tucumcarii in New Mexico) each display considerable morphological variation in valve shape and the proportions and expression of various features. Variation within an assemblage is partly due to ontogenetic changes but is mainly ecophenotypic, with local variation in nature of substrate, water turbulence, length of attachment time, and other factors influencing the final morphology of the mature shell. The T. navia assemblage is distinct in several important morphological characters from the other species, and the differences become more pronounced with growth. Texigryphaea navia appears to have been adapted to relatively firm substrates in moderately agitated conditions, in contrast to the other species, which occupied softer substrates in quieter environments. The essentially contemporaneous T. pitcheri and T. tucumcarii assemblages display much overlap in all measured dimensions of the left valve and in the range of intergrading morphs that compose each assemblage. Accordingly, T. tucumcarii is considered a synonym of T. pitcheri, representing populations of that species that lived in the West Texas-New Mexico area and developed only minor differences from the eastern populations. Within the T. navia topotypic assemblage are specimens intermediate between T. navia and T. pitcheri, and the eastern and western T. pitcheri assemblages contain forms apparently transitional to two other species, T. washitaensis and T. belviderensis. Ecophenotypic variation in the T. pitcheri assemblages appears to be greater than that in European Jurassic Gryphaea species and mirrors to some extent phyletic variation in European Jurassic Gryphaea lineages.

Effect of Shock Loading on Food Processing

2006 ◽  
Author(s):  
Toshiaki Watanabe ◽  
Hironori Maehara ◽  
Asuka Oda ◽  
Shigeru Itoh
Keyword(s):  
Shock Wave ◽  
Pressure Vessel ◽  
Food Processing ◽  
Food Industry ◽  
Shock Loading ◽  
High Efficiency ◽  
The Other ◽  
Experimental Result ◽  
Shock Wave Loading ◽  
Wave Loading

In the food industry, it is hoping high value-aided product and the increase in efficiency of food processing. On the other hand, we get an experimental result that the load of the shock wave improves an extraction of food, and soften food. But, the safe and high efficiency pressure vessel for the processing is necessary to apply these technologies to the food processing field actually. Therefore, we are planning the development of the pressure vessel for food processing. The fundamental data of the shock loading to food are necessary in order to make suitable vessel. As for these data, it is variety the specifications required by the kind of food and effect to expect. We report the result that shock wave loading was done to various food.

A Study of the Conservatism in ASME BPVC Section VIII Division 2 Opening Design for External Pressure

2019 ◽  
Author(s):  
Barry Millet ◽  
Kaveh Ebrahimi ◽  
James Lu ◽  
Kenneth Kirkpatrick ◽  
Bryan Mosher
Keyword(s):  
Finite Element ◽  
Internal Pressure ◽  
Pressure Vessel ◽  
External Pressure ◽  
The Other ◽  
Finite Element Analyses ◽  
Division 1 ◽  
Section Viii ◽  
Allowable Compressive Stress ◽  
Division 2

Abstract In the ASME Boiler and Pressure Vessel Code, nozzle reinforcement rules for nozzles attached to shells under external pressure differ from the rules for internal pressure. ASME BPVC Section I, Section VIII Division 1 and Section VIII Division 2 (Pre-2007 Edition) reinforcement rules for external pressure are less stringent than those for internal pressure. The reinforcement rules for external pressure published since the 2007 Edition of ASME BPVC Section VIII Division 2 are more stringent than those for internal pressure. The previous rule only required reinforcement for external pressure to be one-half of the reinforcement required for internal pressure. In the current BPVC Code the required reinforcement is inversely proportional to the allowable compressive stress for the shell under external pressure. Therefore as the allowable drops, the required reinforcement increases. Understandably, the rules for external pressure differ in these two Divisions, but the amount of required reinforcement can be significantly larger. This paper will examine the possible conservatism in the current Division 2 rules as compared to the other Divisions of the BPVC Code and the EN 13445-3. The paper will review the background of each method and provide finite element analyses of several selected nozzles and geometries.

scholarly journals Development of Explosion-containment Vessel with 3 kg TNT Equivalent

2019 ◽  
Vol 616 ◽  
pp. 012020
Author(s):  
Kan Zhou ◽  
Ge Huang ◽  
Kai Fang ◽  
Huang Huang ◽  
Haijun Bai
Keyword(s):  
Containment Vessel ◽  
Tnt Equivalent

Reduced Mobility or the Bow and Arrow? Another Look at “Expedient” Technologies and Sedentism

2010 ◽  
Vol 75 (2) ◽  
pp. 259-286 ◽  
Author(s):  
Jim A. Railey
Keyword(s):  
New Mexico ◽  
North America ◽  
Agricultural Intensification ◽  
Causal Link ◽  
The Other ◽  
Other Hand ◽  
Bow And Arrow ◽  
Reduced Mobility ◽  
Subsistence Practices

Parry and Kelly (1987) argued for a causal link between expedient technologies and sedentism, and their explanation has widely influenced lithic analysts. There are some problems with their explanation, however, including disconnects in the reported timing of the shifts to expedient technologies, agricultural intensification, and sedentism. On the other hand, across much of North America the transition to an expedient technology appears to correlate more closely to the arrival of the bow and arrow. This is supported by data from a large excavation project in southern New Mexico, which shows that indicators of the shift to an expedient technology cannot be attributed to reduced mobility or any observable changes in subsistence practices, but do appear to correlate temporally with the appearance of arrow points.

Large Scale Fracture Mechanics Testing

2008 ◽  
Author(s):  
Milan Brumovsky
Keyword(s):  
Czech Republic ◽  
Fracture Mechanics ◽  
Pressure Vessel ◽  
Large Scale ◽  
The Other ◽  
The Czech Republic ◽  
Short Overview ◽  
Scale Models ◽  
Leak Before Break ◽  
Reactor Pressure

This paper gives a short overview of experimental programs using large scale models/experiments realized in the Czech Republic with the aim to support the reactor pressure components of WWER type reactors. One part of the program was concentrated on reactor pressure vessel components only. It contained flat specimens with defects on one side and models with stress concentrators (nozzles, bolting joints) on the other side. Second part of the program was a part of the LBB (Leak-before-break) project applied to all WWER safety related pipings. Large scale models with defects, located in heterogenous (safe-end) as well as homogenous welds are described.

Age of the Shasta Ground Sloth from Aden Crater, New Mexico

1964 ◽  
Vol 29 (3) ◽  
pp. 390-391
Author(s):  
Elwyn L. Simons ◽  
H. L. Alexander
Keyword(s):  
New Mexico ◽  
Tissue Sample ◽  
The Other ◽  
Radiocarbon Dates ◽  
Excellent Preservation ◽  
Ground Sloth ◽  
Late Survival

AbstractLate survival of the Shasta ground sloth, Nothrotherium shastense, an assumption partially based on excellent preservation of a specimen from the Aden Crater, New Mexico, can no longer be supported, at least on the basis of this specimen. Two radiocarbon dates, one derived from desiccated tissues and the other from an associated coprolite (9840 ± 160 and 11,080 ± 200 B.P.), place the specimen within the temporal span of other dated ground-sloth finds. The discrepancy of over 1000 years in these two dates can be explained by alcohol contamination of the tissue sample.

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