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定价： 646元 / 折扣价： 550 元 加购物车

This test method describes the optical emission vacuum spectrometric procedure for examining blast furnace iron (hot metal) containing 4.2 to 5.0 % carbon by the point-to-plane technique. This spectrochemical technique is intended specifically for the analysis of silicon, manganese, phosphorus, titanium, and sulfur in specified concentration ranges in blast furnace iron. Apparatus needed for this procedure shall include sample mold, grinder, supporting electrode, excitation source, spectrometer, and appropriate measuring system. The sample is excited in an inert gas atmosphere by a controlled triggered capacitor discharge using the point-to-plane technique. Using a vacuum spectrometer, the radiant energies of selected analytical lines and an internal standard line are measured by photomultipliers. The output current of each photomultiplier is accumulated and stored during the exposure period as a charge on an associated capacitor, where it appears as a measurable voltage. At the end of the exposure period the voltages corresponding to the analytical lines relative to the voltage for the internal standard line are measured. The measuring system may be calibrated in terms of percent concentration.1.1 This test method describes the spectrochemical procedure for the analysis of blast furnace iron (hot metal) containing 4.2 to 5.0 % carbon for the following elements in the indicated ranges:Elements Concentration Range, %Silicon 0.50 to 2.00Manganese 0.20 to 1.50Phosphorus 0.020 to 0.15Titanium 0.02 to 0.10Sulfur 0.010 to 0.0501.2This 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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5.1 This test procedure is used to measure two of the main effects of an explosive detonated in a trash receptacle as related to the type and amount of explosive charge and the location where the charge is placed in the trash receptacle. The two effects are:5.1.1 Release of primary and secondary fragments, and5.1.2 Physical damage to the trash receptacle.5.2 This test procedure is applicable to all trash receptacles, including lidded or non-lidded as supplied by the manufacturer.5.3 This test procedure is used to generate data for use in developing performance specifications for trash receptacles.5.4 For users having interest in determining overpressures created by the detonation, Appendix X1 provides guidance for making such determinations.1.1 This test method provides a procedure for characterizing the performance of a trash receptacle when an explosive is detonated within the receptacle.1.1.1 The procedure determines the extent and location of fragments produced during the explosion, and whether breaches are created in the exterior surfaces of the trash receptacle.1.1.2 Appendix X1 provides guidance for determining the magnitude of blast waves (that is, external overpressures) developed.1.1.3 Effects due to a fireball resulting from the detonation of an explosive within a trash receptacle are beyond the scope of the test method.1.2 This test method is intended to be performed in open-air test arenas.1.3 The values stated in SI units are to be regarded as the standard. The values stated in parentheses are for information only.1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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定价： 590元 / 折扣价： 502 元 加购物车

定价： 590元 / 折扣价： 502 元 加购物车

定价： 590元 / 折扣价： 502 元 加购物车

定价： 646元 / 折扣价： 550 元 加购物车

定价： 590元 / 折扣价： 502 元 加购物车

5.1 This standard is intended to provide guidance on the deployment of blast resistant trash receptacles that focuses on the mitigation of human injury. It is not in general intended to provide guidance on the protection of structures in the vicinity of where the blast resistant trash receptacles are deployed.5.2 The importance of a strategy and procedures for the deployment of blast resistant trash receptacles in crowded places cannot be overly emphasized. Trash receptacles in crowded places have been, and continue to be, an attractive repository for explosives. The selection of deployment locations impacts both the mitigation of the effects of an explosion occurring within one as well as the convenience of using the receptacles.5.3 Two major effects resulting from an explosion in a trash receptacle are the production of primary and secondary fragments as well as overpressure from the detonation. The recommendations in this guide are intended to mitigate the damaging effects of fragmentation and overpressure in crowded places.5.4 Another effect resulting from an explosion in a trash receptacle is the fireball. This effect may cause burns to people caught within or near to the fireball. Also, it is possible that the heat output from an explosion may cause nearby combustible material to ignite. It is important, therefore, that blast resistant trash receptacles are not placed near combustible materials.5.5 The deployment of blast resistant trash receptacles provides a means for decreasing injury and lethality during an explosive event no matter their location when compared to the protection afforded by ordinary trash receptacles or clear plastic bags. Fragments resulting from explosions create the greatest danger to people as fragments may travel several hundred meters and still have velocities that could be lethal or injurious. Blast resistant trash receptacles that meet the requirements of Specification E2740 when subjected to internal explosions equal to or less than the force protection rating contain horizontal primary fragments and do not produce secondary fragments.5.6 This guide provides general provisions for the deployment of blast resistant trash receptacles. Every facility or venue has unique features associated with factors such as demographics, location, and functions. Operational and explosive effects considerations (see  Section 7) provide basic recommendations that may be sufficient for many facilities buildings and venues, but may not be specifically applicable to others. For example, special security concerns at high value facilities or high pedestrian count venues will require guidance concerning the deployment of blast resistant trash receptacles from security personnel familiar with that facility.5.7 The guide is intended for use by individuals in both the private and public sectors who are considering the purchase and deployment of blast resistance trash receptacles.1.1 This guide identifies the key factors that should be considered prior to the deployment of blast resistant trash receptacles (BRTRs) in crowded places.1.1.1 Guidance is included for their deployment at interior and exterior locations associated with the crowded places.1.2 Facilities and venues where blast resistant trash receptacles may be deployed include, but are not limited to:1.2.1 Airports,1.2.2 Banks and other financial institutions,1.2.3 Bars and nightclubs,1.2.4 Convention centers,1.2.5 Entertainment and event centers,1.2.6 Hotels,1.2.7 Health care locations,1.2.8 Museums,1.2.9 Places of worship,1.2.10 Public government locations including fire and police stations,1.2.11 Railway stations, bus stations, and related transit areas,1.2.12 Restaurants,1.2.13 Retail centers and malls,1.2.14 Schools, universities, and related areas used for education,1.2.15 Stadiums and arenas, and1.2.16 Theaters.1.3 Guidance on conducting a threat assessment or vulnerability analysis, and on responding to incidents associated with the deployment of blast resistant trash receptacles is beyond the scope of this document.1.4 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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4.1 Abrasive media may contain ionic contamination naturally (for example, beach sand), from manufacturing (quenching with contaminated water), transportation, storage or use (in the case of abrasive that is reused). Ionic contamination on the abrasive may transfer to the surface during abrasive blast cleaning, resulting in potential osmotic blistering, accelerated underfilm corrosion and premature coating failure.4.2 This test method describes a shop/field procedure for assessing the level of conductive species on an abrasive.4.3 Abrasive standards published by SSPC (AB) and ISO 11126 provide tolerance levels for water soluble contaminants of the abrasive.1.1 This test method describes a procedure for assessing blast cleaning abrasives for the presence of conductive-potential, ionic contaminants by determining the total concentration of water soluble conductive species using a conductivity test.1.2 This test method does not identify the ionic species present nor provide quantitative results on each species.1.3 This test method is based on a volume comparison among abrasives of similar sizes. A volume comparison is more closely related to surface area of the abrasives than is a weight comparison.1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 618元 / 折扣价： 526 元 加购物车

定价： 590元 / 折扣价： 502 元 加购物车