ASTM F3129-16

Standard Guide for Characterization of Material Loss from Conical Taper Junctions in Total Joint Prostheses

Published by: 2016-04-15 / 2016-04-15 / 8 pages

1.1 This guide specifies a method to measure the surface and estimate the in-vivo material loss from the conical taper junctions, such as the femoral head/stem junction or adapter sleeve from explanted modular hip prosthesis, modular knee or shoulder joints. This guide is applicable to any articulating bearing material, stem material and conical taper size. The principles in this guide may be applied to other designs of taper junction, such as the modular stem/neck junction found in some hip joints.

1.2 This guide covers the measurement of the surface and estimation of depth of material loss and volume of material loss and taper geometry using a Roundness Machine (1-4), Coordinate Measuring Machine (CMM) (5) and Optical Coordinate Measuring Machine (6, 7).2 Other measurement equipment may be used to measure the surface if the resolution and accuracy of the measurements are comparable with the instruments detailed in this standard. The measurement and analysis protocols should be based on those described in this standard.

Note 1: The maximum depth of material loss is sensitive to the number and spacing of data points.

1.3 The measurement techniques in this standard guide use measurements taken on the surface of the taper using stylus instruments. The material loss/corrosion mechanisms in the taper junction may lead to oxide layers or corrosion products deposited on the surface of the taper. These layers may lead to an underestimation of the volume of material loss.

1.4 The explants may have debris or biological deposits on the surfaces of the taper junctions. These deposits will prevent the measurement of the actual surface of the taper junction and their effect on the measurement must be considered when deciding the cleaning protocol. Normally, the taper surfaces will be cleaned before measurements are taken.

1.5 This standard may involve hazardous materials, operations and equipment. As a precautionary measure, explanted devices should be sterilized or minimally disinfected by an appropriate means that does not adversely affect the implant or the associated tissue that may be the subject of subsequent analysis. A detailed discussion of precautions to be used in handling human tissues can be found in ISO 12891-1. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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S24 — Desiccant Dehumidification and Pressure-Drying Equipment (I-P)

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Published by: 2016-01-01 / 2016-01-01 / 14 pages

This chapter covers (1) the types of dehumidification equipment for liquid and solid desiccants, including high-pressure equipment;(2) performance curves; (3) variables of operation; and (4) some typical applications. Using desiccants to dry refrigerants is addressed in Chapter 8 of the 2014 ASHRAE Handbook—Refrigeration.

Methods of Dehumidification
Desiccant Dehumidification
Liquid Desiccant Equipment
Solid-Sorption Equipment
Rotary Solid-Desiccant Dehumidifiers
Equipment Ratings
Equipment Operating Recommendations
Applications for Atmospheric-Pressure Dehumidification
Desiccant Drying at Elevated Pressure
Equipment Types
Applications

ISBN: 978-1-939200-26-6 (for I-P versions of chapters)
ISSN: 1078-6066 (for I-P versions of chapters)

Citation: 2016 ASHRAE Handbook — HVAC Systems and Equipment: Chapter 24, Desiccant Dehumidification and Pressure-Drying

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SAE AIR1660C

Fuel Level Control Valves and Systems

Published by: 2016-05-17 / 2016-05-17

A fuel level control valve/system controls the quantity of fuel in a tank being filled or emptied on the aircraft. This document provides a general familiarization with these mechanisms (e.g., forms they take, functions, system design considerations). This document provides the aircraft fuel system designer with information about these mechanisms/devices, so that he can prescribe the types of level control valves/systems which are best suited for his particular fuel system configuration.

The scope has been expanded as different aircraft manufacturers may use different type of fuel system architectures. Their refueling and defueling systems may take different configurations, may require different types of fuel control valves and may require different types of interface with the onboard Fuel Measurement System. They must also limit pressure surges and be compatible with ground refueling equipment which have varying surge potentials and create surges.

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SAE J862_198901

Factors Affecting Accuracy of Mechanically Driven Automotive Speedometer and Odometers

Published by: 1989-01-01 / 1989-01-01
This report is concerned with factors which affect accuracy of distance indication and speed indication of automotive type odometer speedometers. It is the intent to supply information regarding all items which affect the instrument.

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SAE J171A_197207

Measurement of Fuel Evaporative Emissions from Gasoline Powered Passenger Carsand Light Trucks Using the Enclosure Technique

Published by: 1972-07-01 / 1972-07-01
This SAE Recommended Practice describes a procedure for measuring evaporative emissions from fuel systems of passenger cars and light trucks. Emissions are measured during a sequence of laboratory tests that simulate typical vehicle usage in a metropolitan area during summer months: a. A 1 h soak representing one diurnal cycle in which temperature of fuel in the vehicle’s tank is raised from 15.6 to 28.9 °C (60 to 84 °F) b. A 17.9 km (11.1 mile) drive on a chassis dynamometer c. A 1 h hot soak immediately following the 17.9 km (11.1 mile) drive The method described in this document, commonly known as the SHED (Sealed Housing for Evaporative Determination) technique, employs an enclosure in which the vehicle is placed during the diurnal and hot soak phases of the test. Vapors that escape from all openings in the fuel system–both expected and unexpected–are retained in the enclosure, and the increase in hydrocarbon (HC) concentration of the atmosphere in the enclosure represents the evaporative emissions. Emission values measured by the enclosure method can, therefore, be significantly different than those obtained by the former trap method, depending on fuel system configuration and component design. The test sequence and methods for measuring emissions are applicable to vehicles either with or without systems or devices to control fuel evaporative emissions. Although they have been used successfully with a wide range of vehicles equipped with a variety of control devices, they should not be applied indiscriminately to new or unique vehicles or fuel systems. For example, based on experience that temperature excursions of the fuel tank in parked vehicles follow those of ambient air, the test sequence prescribes heating of the fuel tank to simulate a diurnal soak. Any control system designed to alter the relation between fuel and ambient temperatures will not be properly evaluated in the test sequences prescribed. This document is intended as a guide toward standard

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ICAO 7379

Intl Conference On Private Air Law – Minutes And Docs Rome, Sept-Oct 1952 (Doc 7379-L/34)

Published by: 1953-01-01 / 1953-01-01 / 904 pages
Conference on Damage Caused by Foreign Aircraft to Third Parties on the Surface–
Minutes and documents of the Conference.

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CAN/CSA-ISO 19901-1:16

Petroleum and Natural Gas Industries – Specific Requirements for Offshore Structures – Part 1: Metocean Design and Operating Considerations (Adopted ISO 19901-1:2015, second edition, 2015-10-15)

Published by: 2016-04-01 / 2016-04-01 / 231 pages

CSA Preface

This is the second edition of CAN/CSA-ISO 19901-1, Petroleum and natural gas industries – Specific requirements for offshore structures – Part 1: Metocean design and operating considerations, which is an adoption without modification of the identically titled ISO (International Organization for Standardization) Standard 19901-1 (second edition, 2015-10-15). It supersedes the previous edition published in 2006 as CAN/CSA-ISO 19901-1 (adopted ISO 19901-1:2005).


Scope

This part of ISO 19901 gives general requirements for the determination and use of meteorological and oceanographic (metocean) conditions for the design, construction and operation of offshore structures of all types used in the petroleum and natural gas industries.

The requirements are divided into two broad types:

  • those that relate to the determination of environmental conditions in general, together with the metocean parameters that are required to adequately describe them;
  • those that relate to the characterization and use of metocean parameters for the design, the construction activities or the operation of offshore structures.

The environmental conditions and metocean parameters discussed are:

  • extreme and abnormal values of metocean parameters that recur with given return periods that are considerably longer than the design service life of the structure,
  • long-term distributions of metocean parameters, in the form of cumulative, conditional, marginal or joint statistics of metocean parameters, and
  • normal environmental conditions that are expected to occur frequently during the design service life of the structure.

Metocean parameters are applicable to:

  • the determination of actions for the design of new structures,
  • the determination of actions for the assessment of existing structures,
  • the site-specific assessment of mobile offshore units,
  • the determination of limiting environmental conditions, weather windows, actions and action effects for pre-service and post-service situations (i.e. fabrication, transportation and installation or decommissioning and removal of a structure), and
  • the operation of the platform, where appropriate.


NOTE Specific metocean requirements for site-specific assessment of jack-ups are contained in ISO 19905-1, for arctic offshore structures in ISO 19906 and for topside structures in ISO 19901-3.

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