钢丝绳缺陷电磁检测技术与适用性评估

本文简述了钢丝绳缺陷检测技术的类别和发展动态,对比分析了国内外钢丝绳缺陷电磁检测仪器的性能参数和特性,结合实际应用总结了钢丝绳电磁检测技术存在的问题,评估了其工程适用性。     

A survey of flaws near welds detected by side angle ultrasound examination of anhydrous ammonia nurse tanks

A sample of 532 anhydrous ammonia nurse tanks with manufacture dates ranging from the 1950’s to 2011 were examined during 2012 by side angle ultrasound to measure the locations, sizes, and orientations of flaw indications. The indications were most frequently located on the head side of the head-to-shell welds and oriented perpendicular to the weld line in the welds’ heat affected zones. On average newer tanks had more indications than older tanks. Tanks that had been given a post-weld stress relief anneal had markedly fewer indications.     

我国环境影响评价审查的专家回避制度探讨

对我国环境影响评价专家审查制度存在的问题进行深入分析,参考我国司法、行政、仲裁体系的回避制度,探讨如何以《环境影响评价审查专家库管理办法》中的审查专家主动回避规定为基础,引入审查专家申请回避,建立、健全我国环境影响评价审查的专家回避制度,以保证环境影响评价审查的公正性、公平性和权威性,进一步完善我国的环境影响评价制度。     

正压空气呼吸器定期检验及存在问题分析

正压空气呼吸器是抢险救援的重要装备。本文对正压空气呼吸器的基本组成、工作原理进行了阐述，对长庆油田在用正压空气呼吸器使用现状和存在的问题进行了汇总和分析，提出了定期检验的内容、依据和程序．明确了开展定期检验是确保正压空气呼吸器正常使用、减少隐患的重要手段。     

Risk-based inspection for large-scale crude oil tanks

Periodic Internal Inspection Method often results in under-inspection or over-inspection for large-scale crude oil tank. Therefore, how to determine reasonable internal inspection interval (INTII) has great significance on balancing the safe operation requirement and inspection cost for crude oil tanks. Here, RBI (risk-based inspection) technology is used to quantitatively assess the risk of crude oil tanks in an oil depot in China. The risk comparison between tank shell and bottom shows that the risk of tank depends on the risk of tank bottom. The prediction procedure of INTII for crude oil tanks is also presented. The INTII predicted by RBI method is gradually extended with the increasing of the acceptable risk level. The method to determine the acceptable risk of crude oil tanks is proposed, by which 3.54E+04 are taken as the acceptable risk of the oil depot. The safety factor of 0.8 is proposed to determine the final INTIIs for 18 crude oil tanks. The INTII requirement in China code SY/T 5921, 5-7 years, is very conservative and lower than predicted service life of tanks. The INTIIs predicted by Gumbel method are smaller than by RBI method for tanks with short INTII. Therefore, this paper recommends RBI method to predict the INTII for crude oil tanks.     

城市轨道交通钢轨伤损的评价分析

城市轨道交通中钢轨的质量、工作状态对整个线路的质量以及行车安全有着直接的影响。笔者在对北京地铁钢轨伤损常见类型和伤损现状进行统计分析的基础上,得出了以下结论:1号线和2号线运营时间较长,钢轨伤损主要以剥离掉块等疲劳性损伤为主;新建线(13号线和八通线)到目前为止出现的钢轨伤损主要以焊缝伤损及焊点伤损为主要类型。讨论了轨道交通与国铁不同的钢轨伤损的成因,有针对性地提出了钢轨伤损防治对策,如提高钢轨质量、铺设无缝线路、加强养护维修和做好钢轨探伤检查工作,并提出了钢轨伤损的监测管理和整治修复措施。     

中小企业安全管理现状调查与对策研究

近年来,中小企业迅猛发展,为推动经济发展和社会进步发挥了重要作用,与此同时,中小企业安全生产问题也日益突出。为了摸清中小企业安全生产现状,探索有效的安全生产监管办法,江苏省某市在其辖区范围内,选择建筑、化工、非煤矿山、机电4个行业的100家中小企业,就其安全生产状况进行调查。其结果表明:大多数中小企业安全管理基础工作不扎实;安全管理水平普遍不高;不同行业企业间安全投资水平差距较大。针对中小企业安全管理存在的问题,提出了相应的对策:提高中小企业全员安全意识和安全素质;有效促进企业加大安全投资;推行注册安全主任制度;建立市场准入和退出机制;培育安全生产中介组织等。     

建设项目竣工验收监测中选用环境标准的若干问题

通过分析在进行建设项目竣工环境保护验收监测过程中选用标准的重要性和存在的问题,提出应按照国家的新要求进行标准的选用,并对实际竣工验收监测中遇到的选用标准问题提出了解决的办法。     

企业分级监察模型及其应用研究

企业监察级别的划分是有效利用监察资源,提高监察绩效,实现集约型分级安全生产监察的基础.本文通过分析研究,结合我国安全生产现状,综合考虑企业自身特点和行业特性,建立了基于企业职业伤亡统计的分级监察模型,并利用该模型对柳州市502家企业的2005年监察级别进行了划分.最后,对企业分级监察模型研究中存在的问题进行了探讨.     

某厂房结构腐蚀检测鉴定

通过对某厂房结构进行腐蚀检测鉴定，对结构损坏原因进行分析、判定，根据分析结果提出相应处理措施。