危险化学品汽车常压罐车的检验要点

危险化学品汽车常压罐车作为一个流动的危险源,在罐体的运行、维修过程中,因未要求法定单位进行检测、检验,未能及时发现与排除危险化学品罐体的隐患,泄漏、爆炸事故就会时有发生。危险化学品汽车常压罐车检验是近几年新开展的一项检验工作。根据对本市汽车常压罐车的实际检验检测,归纳总结了以下几个方面的常见缺陷问题,并指出了相应的处理方法。     

综合信息

政策要闻五部门联合开展危险化学品罐车专项检查 国家质量监督检验检疫总局、铁道部、公安部、交通部、国家安全生产监督管理局日前联合发出通知,立即在全国范围内开展一次铁路罐车、汽车罐车、长管拖车和罐式集装箱的专项检查整治活动。     

国家质量监督检验检疫总局 铁道部 公安部 交通部 国家安全生产监督管理局 关于开展危险化学品罐车专项检查整治工作的通知

近来,盛装易燃易爆有毒介质的固定式和移动式容器泄漏、爆炸事故频发,造成较多人员伤亡和较大的社会影响。为了贯彻党中央、国务院领导同志批示和全国安全生产电视电话会议精神,切实加强危险化学品储存、运输设备的安全管理,国家质检总局、铁道部、交通部、公安部、国家安全生产监督管理局决定,立即在全国范围内联合开展一次铁路罐车、汽车罐车、长管拖车和罐式集装箱(以下统称罐车)的专项检查整治活动。具体要求如下:一、专项检查整治的范围和重点这次专项检查整治的范围主要是运输危险化学品的各类罐车;检查的重点是罐车的使用登记、运输…     

国务院安委办决定开展危险化学品槽罐车充装单位专项整治活动督查工作

2006年12月29目，国务院安全生产委员会办公室发出《关于开展危险化学品槽罐车充装单位专项整治活动督查工作的通知》（安委办2006[47]号）。通知说，为切实加强危险化学品槽罐车充装源头管理，打击危险化学品槽罐车超载，有效遏制重特大危险化学品运输事故发生，根据《国务院安委会办公室关于开展危险化学品槽罐车充装单位专项整治活动的通知》（安委办[2006]16号）有关要求，并结合液化气体罐车充装站整治专项活动有关安排，决定对危险化学品槽罐车充装单位专项整治活动（以下简称专项整治活动）情况进行督查。现将有关事项通知如下：     

美国拟出新规提升危化品运输安全性

2008年4月中旬,美国运输部联邦铁路管理局为提高美国铁路货运安全而在拟订的最新运输规则中特别强调,运输氯气、液氨等高危化学品将使用新一代的抗冲击性能更好的新式罐车来代替目前普遍使用的老式铁路罐车。加强危险化学品的运输管理,一直以来都是全球化工行业发展的重中之重。为提高铁路运输安全,美国联邦铁路管理局要求在运输那些一旦发生泄漏就会因吸入而使人体发生中毒事故的物质时,所用罐车要能确保不会在40km／h行驶速度因侧面受到冲击或在48km／h速度下正面碰撞后发生破裂,     

国家质量监督检验检疫总局等5部、局关于开展危险化学品罐车专项检查整治工作的通知

近来，盛装易燃易爆有毒介质的固定式和移动式容器泄漏、爆炸事故频发，造成较多人员伤亡和较大的社会影响。为了贯彻党中央、国务院领导同志批示和全国安全生产电视电话会议精神，切实加强危险化学品储存、运输设备的安全管理，国家质检总局、铁道部、交通部、公安部、国家安全生产监督管理局决定，立即在全国范围内联合开展一次铁路罐车、汽车罐车、长管拖车和罐式集装箱(以下统称罐车)的专项检查整治活动。具体要求如下：     

浅谈危险化学品运输的消防安全管理

简单介绍了危险化学品的分类,从不同危险物品同车混运、运输车辆超载、违章行车、装卸违反操作规程或包装不合格四个方面分析了危险化学品运输的火灾爆炸危险性,针对危险化学品运输的火灾爆炸危险性,从危险化学品的包装、运输车辆的要求、危险化学品的装载等方面详细论述了危险化学品运输方面的防火防爆要求。     

加强危险化学品安全管理的探讨

针对我国危险化学品事故时有发生的严峻形势,本文分别从三个方面论述了加强危险化学品安全管理工作的必要性,具体介绍了我国危险化学品安全管理的严峻形势,以及我国已经开展的危险化学品安全管理工作。最后,笔者结合在危险化学品安全管理工作中的一些实践和体会,对于加强我国危险化学品安全管理工作,提出了一些建议。     

高校本科教学实验室危化品源控制方法的探究

高校教学实验室承担教学任务众多,存在使用化学品种类繁多,存储管理复杂的共性问题。而国家对教育单位的安全管理越来越规范和强化,但目前大部分研究集中在政策和药品管理模式方面,缺乏对教学实验室使用的危险化学品识别、存储和存储材料考虑。本文通过危险化学品识别、危险化学品存储设计和危险化学品存放器材三个方面来探讨高校教学实验室危险化学品安全管理。     

化工行业危险化学品的安全管理措施分析

化学品在日常生活中随处可见,被人们熟知的化学品就达600多万种。在众多化学品中,一部分属于危险化学品。虽然危险化学品改善了人们的生活环境,但威胁人们的生存和健康。从三个方面阐述危险化学品安全管理的必要性,分析我国危险化学品安全管理问题,并提出有针对性的意见和建议。     

乙烯酮(双乙烯酮)下游产品废水的治理技术

乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。     

几种乙炔加压设备性能的比较

阐述并比较了几种加压设备在乙炔加压清净过程中的性能和特点。     

三种煤样燃烧热的测定

本文通过三个厂家提供的三种煤样燃烧热的测定,由测定结果综合得出3号煤样燃烧最完全、燃烧热也最大,是三个煤样中最好的一种。     

Semi-empirical equation of state of metals. Equation of state of aluminum

A semi-empirical equation of state for metals is described. Its capabilities are demonstrated by the example of the equation of state for aluminum. New experimental data are presented on the location of the isentrope of aluminum for unloading from the state at p = 229.71 GPa on the shock adiabat to an aerogel (SiO₂) of density 0.08 g/cm³. __________ Translated from Fizika Goreniya i Vzryva, Vol. 44, No. 2, pp. 61–75, March–April, 2008.     

水泥水化热测定方法综述

水泥水化热是中、低热水泥和核电工程用水泥的一项关键的技术指标。全球范围内测定水泥水化热的方法有溶解法、直接法/半绝热法、等温传导量热法三种。本文总结了中、美、欧相关方法标准,对其测试原理、仪器设备、试验过程等方面进行了比对,并对其在领域的应用做了简单的概括。     

Calorimetric and Computational Study of Enthalpy of Formation of Diperoxide of Cyclohexanone

A thermochemical rather simple experimental technique is applied to determine the enthalpy of formation of Diperoxide of ciclohexanone. The study is complemented with suitable theoretical calculations at the semiempirical and ab initio levels. A particular satisfactory agreement between both ways is found for the ab initio calculation at the 6–311G basis This set level. Some possible extensions of the present procedure are pointed out.     

我国聚碳酸酯工业发展概况

介绍我国聚碳酸酯生产能力和消费需求,对聚碳酸酯在信息工业中的应用作了简短介绍     

小议汽车涂装工艺设计对涂装成本的影响

论述了涂装工艺设计对涂装设备投资、涂装生产成本的影响。     

Effect of degree of deacetylation of chitosan on the kinetics of ultrasonic degradation of chitosan

The objective of the study was to explore the effect of the degree of deacetylation (DD) of the chitosan used on the degradation rate and rate constant during ultrasonic degradation. Chitin was extracted from red shrimp process waste. Four different DD chitosans were prepared from chitin by alkali deacetylation. Those chitosans were degraded by ultrasonic radiation to different molecular weights. Changes of the molecular weight were determined by light scattering, and data of molecular weight changes were used to calculate the degradation rate and rate constant. The results were as follows: The molecular weight of chitosans decreased with an increasing ultrasonication time. The curves of the molecular weight versus the ultrasonication time were broken at 1‐h treatment. The degradation rate and rate constant of sonolysis decreased with an increasing ultrasonication time. This may be because the chances of being attacked by the cavitation energy increased with an increasing molecular weight species and may be because smaller molecular weight species have shorter relaxation times and, thus, can alleviate the sonication stress easier. However, the degradation rate and rate constant of sonolysis increased with an increasing DD of the chitosan used. This may be because the flexibilitier molecules of higher DD chitosans are more susceptible to the shear force of elongation flow generated by the cavitation field or due to the bond energy difference of acetamido and β‐1,4‐glucoside linkage or hydrogen bonds. Breakage of the β‐1,4‐glucoside linkage will result in lower molecular weight and an increasing reaction rate and rate constant. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 3526–3531, 2003     

Measurement of the gradient of viscosity with composition of mixtures of non-ideal gases

A perturbation viscometer is a differential capillary viscometer that measures the logarithmic viscosity gradient of the viscosity-composition curve for gas mixtures. Measurements are made at different gas mixture compositions. Integration of the logarithmic viscosity gradients measured over the full composition range gives the mixture viscosity relative to the viscosity of one of the pure components of the gas mixture. This method is attractive because, for measurements of equal precision, integration of the gradients is potentially an order of magnitude more precise than measurement of the viscosities directly. It can also work at high and low temperatures and perhaps high pressures.The perturbation viscometer has been used to make measurements on ideal gas mixtures at ambient and elevated temperatures. The situation is more complicated when the gas mixtures are non-ideal. Extra effects due to density differences, molar volume change on mixing and differential thermal expansion may be measured in addition to the desired viscosity change producing systematic errors in the results. Thus, a more sophisticated apparatus is required. The standard perturbation viscometer has been modified to separate out the extra effects to permit measurement of the true change in viscosity. In addition, the theoretical operation of the modified apparatus has been revised to account for the design changes to permit calculation of the viscosity-composition profiles from the results.The apparatus has been tested using helium-HFC-125 mixtures and two new viscosity-composition profiles are presented for these mixtures at 23 and . Internal consistency tests have been used to confirm that the data produced are of high quality with an estimated uncertainty in the viscosity ratio data at of 0.9% and at of 1.5%.