电站锅炉集汽集箱环焊缝的焊接性分析

本文介绍了电站锅炉集汽集箱环焊缝的焊接工艺。经过试验,选择了合理的焊接规范参数以及热处理工艺,使得焊缝外观成形美观,过度均匀,无裂纹气孔等缺陷,焊接质量满足了标准要求。     

锅炉燃烧带抓钉焊接工艺及问题讨论

锅炉燃烧带抓钉焊接工艺是锅炉制造中常用的一种焊接工艺，具有良好的连接性能和稳定性。然而，随着锅炉的使用时间的增长，焊接接头往往会出现裂纹、气孔等问题，严重影响了锅炉的使用寿命和安全性。文章对锅炉燃烧带抓钉焊接工艺方法进行了一定论述，在此基础上，进一步分析了锅炉燃烧带抓钉焊接过程中存在的问题，并提出了具有一定针对性的优化措施，最后结合案例进行了分析，进而有助于提高锅炉燃烧带抓钉焊接水平，从而为锅炉的安全运行提供可靠保障。     

徐州阚山电厂一期#2机组A335-P92钢焊接技术

随着电站运行参数的提高,对材料的要求愈发苛刻,一些新材料逐步应用到电站管道制造上,如A335-P92、SUPER304L、HR3C等。徐州阚山电厂一期2×600 MW超超机组中主蒸汽管道及末级过热器出口集箱的材质即为A335-P92钢。本文介绍了阚山发电厂一期工程#2机组A335-P92钢厚壁管道焊接工艺,并阐述在工程实践中须着重控制的方面以及焊接质量控制措施。     

浅谈锅炉焊接工艺技术

锅炉的焊接，在锅炉的制造过程中是最为关键的工艺方法，我国发电装备制造行业水平直接依赖于锅炉行业中焊接技术水平。长时间以来，锅炉制造行业的技术发展都是致力于锅炉焊接技术，致力于如何提高锅炉制造技术水平，尤其是近5年来，锅炉技术发展又加快了焊接技术的发展，与此同时焊接技术水平的提高直接推动了锅炉行业的发展。本文主要介绍锅炉焊接技术的发展现状，以及对锅炉焊接工艺做简要分析，最后浅谈锅炉焊接技术的发展前景。     

一起锅炉集箱泄露事故原因分析及对策

锅炉设计、制造等环节的不合理结构,受压部件不合理的焊接方式以及锅炉运行是否平稳是造成锅炉事故的重要诱因。文章通过对一起锅炉集箱泄露事故原因的分析和探讨,找出导致事故发生的主要原因,并提出相应的解决方案,为该锅炉以后的安全运行奠定了坚实的基础。     

一起锅炉集箱泄露事故原因分析及对策

锅炉设计、制造等环节的不合理结构,受压部件不合理的焊接方式以及锅炉运行是否平稳是造成锅炉事故的重要诱因。文章通过对一起锅炉集箱泄露事故原因的分析和探讨,找出导致事故发生的主要原因,并提出相应的解决方案,为该锅炉以后的安全运行奠定了坚实的基础。     

电站锅炉过热器管爆管原因分析

过热器调温装置的设计和布置固然对于过热器系统的可靠运行起着决定性的作用,但是,锅炉及其相关设备的运行状况也会对此造成很大的影响,而后者又往往受到众多因素的综合影响。因此,如何确保锅炉在理想工况下运行是一个有待深入研究的问题。本文对热电站锅炉高温过热器管爆管的原因进行分析,确定超温过热及焊接质量是其主要原因,提出相应的处理对策,并介绍了处理后的效果。     

锅炉生产中的焊接问题

锅炉生产中的焊接在整个制造过程中是最为关键的工艺方法，我国制造行业的质量水平就是直接依赖于锅炉行业中焊接技术水平。本文首先分析了锅炉生产中的焊接准备问题，涉及到：焊接工作人员的要求、焊接管理以及对接焊接等方面，并进一步研究了锅炉生产中的焊接施工问题。     

浅谈锅炉压力容器焊接技术

近些年,我国锅炉等压力容器的焊接技术发展很迅速。由于锅炉等压力容器尺寸的变化和服役条件的改变,焊接技术需要更多的改进,不仅需要采取适当的焊接方法、焊接材料、焊接设备和焊接工艺,确保焊接接头的性能,还需要遵守高效率和低能耗的原则。在压力容器焊接的研究工作中,焊接科研者遇到了很多技术问题。这就需要科研者通过不断地努力,突破技术性障碍,应用到实际生产中,获得一定的经济效益,发展锅炉压力容器的焊接技术。文章系统分析了锅炉压力容器的焊接特点、焊接方法、焊接材料和焊接工艺。     

锅炉受热面管子安装焊口焊接缺陷的产生及防止

我们知道在大型电站锅炉安装中焊接工作量非常大，以300MW机组为例，锅炉的受热面管子安装焊口约为2万个之多。由此可知，焊接质量是锅炉安装工程的重中之重，直接关系到锅炉能否安全运行。氩弧焊封底时模式水冷壁焊口的未焊透、手工焊盖面省煤器（3．2mm×3．5mm）及过热器（38mm×3．5mm）等小口径管焊口起弧和收弧处的气孔是电站锅炉安装中容易产生的焊接缺陷。笔者结合多年监检实践，并查阅有关资料，就上述缺陷的产生和防止提出自己的观点，以与同行商榷。     

Development in Information and Communications Technology (ICT) Statistics at the Australian Bureau of Statistics

This paper outlines the ICT statistical developments that the ABS has undertaken over recent years. These developments have been on both the supply side (ICT industry) and the demand side (use of IT by sector). The content of ABS ICT surveys has changed significantly over the last few years and are expected to develop further in line with industry changes and emerging policy needs.
Recent developments in household collections have been the inclusion of IT use questions in the 2001 Census of Population and Housing and in various ABS social surveys such as Children's Participation in Culture and Leisure Activities. Annual business IT use surveys are now conducted and include topics such as Internet commerce and IT security. Biennial ICT industry surveys are conducted to provide data on ICT production, imports and exports, ICT industry employment, performance and structure information. An Internet activity survey is run every six months and provides regional Internet access details and infrastructure details on Internet service providers.
A major development for 2002–03 will be the compilation of an ICT satellite account. ABS intends to produce an ICT Information Development Plan to guide its future statistical development work in the ICT field.     

Value at Risk in the Suburbs: Eminent Domain and the Geographical Politics of the US Foreclosure Crisis

Several US counties and local governments have recently considered a novel solution to the foreclosure crisis. They plan to use eminent domain to compel the owners of mortgage debt—and specifically of private‐label mortgage‐backed securities—to sell the debt to the government at a price reflecting the loan's market value. The government would then restructure the debt and resell it to new investors. The plans are striking because—in contrast to both development‐driven eminent domain and the federal subprime bank bailout—they would force investors to assume asset devaluation and increased long‐term risk. Notably, the plans have emerged as an instance of financialization‐focused politics in suburbs and suburban cities of color, specifically majority‐black and ‐Latino/a suburbs. Local support for the plans, we argue, is rooted in the long‐term disinvestment of these ‘suburbs of exception', which became targets of subprime lending and eventually sites where the ‘financial exception' has been localized. But these demographic shifts, fragmentation and fiscal pressures have at the same time created a suburban political terrain in which the plans have gained their strongest political support.     

Towards a Theory of Serendipity: A Systematic Review and Conceptualization

Serendipity – the notion of making surprising and valuable discoveries – plays a major role in the success of individuals and organizations alike. Previous research has established the importance of serendipity and identified important individual- and organizational-level antecedents. However, the literature has been dispersed and the boundaries of the concept have been blurry, leading to a lack of conceptual clarity and structure, and thus limiting validity and managerial actionability. Based on a systematic literature review, I synthesize existing management-related research on serendipity and explicate the emergence and composition of serendipity in the organizational context. I first identify three necessary conditions that differentiate serendipity from related concepts such as luck or targeted innovation: agency, surprise, and value. Then, I draw from the literature on sensemaking, event-based theorizing, and quantum-based approaches to management to conceptualize the process of cultivating serendipity in the organizational context as a process of enabling potentiality and materialization, and develop a multi-level theory of (cultivating) serendipity. This conceptualization contributes to our collective understanding of how, why, and when (i.e., under what conditions) organizations can leverage the value in the unexpected, which opens up fruitful avenues for further research.     

Accountability of NGOs in Bangladesh A critical overview

NGOs in Bangladesh have been recognized as effective change agents in the socio-economic arena throughout the world. Their contributions in micro credit, non-formal education and primary health care are widely known. NGOs play a significant role in society. NGO accountability, as a result, has become a critical issue. NGO accountability in Bangladesh has been examined here in relation to patrons, clients and themselves. Of the three relationships only accountability to patrons is in a near satisfactory state. Accountability to clients is handicapped by lack of opportunities of beneficiaries to participate meaningfully in NGO policy making. Accountability to themselves is adversely affected due to the adherence to a strictly hierarchical system and the influence of founding and charismatic NGO leaders.     

Towards an Asian model of human resource management? A comparative analysis of China,Japan and South Korea

There has been much discussion regarding the possible decline and weakening of national systems of human resource management (HRM). Yet, culture and institutions are often cited as the major stumbling blocks to this outcome. Such constraints may dissipate in the analysis, particularly if ‘regional clusters’ are considered where geographic and cultural closeness and ‘openness’ to similar economic pressures exist. In such cases, it might be postulated that convergence in HRM will occur. We argue that China, Japan and South Korea represent such a cluster. This article examines these countries, to see if a degree of convergence is taking place and if it is towards an identifiable ‘Asian’ model of HRM. A model of change is presented that distinguishes between levels of occurrence and acceptance. Details of the development and practice of HRM in each country are then set out. The article ends with a discussion and implications section and a brief conclusion.     

The Creation of the Office for National Statistics

A new Office for National Statistics was created in the United Kingdom in 1996 following a series of developments designed to strengthen the relevance and integrity of statistics. This paper describes these fundamental changes and sets out a blueprint for future progress. It also sets current developments in the United Kingdom in an historical and international context.     

What helps? Women engineers' accounts of staying on

We have considerable understanding of the obstacles that women engineers encounter and the reasons that they leave the field, but we know less about what enables them to remain. Adopting an interpretivist approach, this article examines how a group of British women engineers in two FTSE 100 companies account for “staying on” in their male‐dominated work settings. We delineate four specific forms of help that facilitate women's retention in the field. We argue that exposure to help leads to women developing a habitus that enables them to continue working in engineering. To conclude, we draw on our findings to outline HR practices that will facilitate supportive relationships in the workplace and pave the way towards developing more positive organisational climates.     

论现代物流企业的发展观

物流业经过诸多年的发展目前已经成为最热门的行业之一,物流企业的注册数量也与日俱增,达到前所未有的规模。毋庸置疑,任何企业都希望自己迅速做强做大,并成为真正现代物流企业的典型代表,要实现这一目标一个首要问题就是要解决现代物流企业的发展观问题。     

浅谈大体积混凝土裂缝的控制

大体积混凝土的裂缝问题是实际工程中长期困扰工程技术人员的问题,其控制技术的研究是混凝土结构研究的热点问题,具有重大的学术价值和潜伏的工程背景。     

Supply Chain Strategies in the UK Fashion Industry—The Rhetoric of Partnership and Realities of Power

This paper focuses on the fashion industry, one characterised by issues such as dramatic shifts in the scale and power of major retail buyers in the market, the advent of retailer own brands, and the nature of sourcing and supply chain decisions, issues that are increasingly global in nature. The aim of this research is to explore the nature of relationships between UK high street multiple fashion retailers and their contracted suppliers, many of whom are entrepreneurial firms by most definitions of the term. Four core themes emerge from the literature and provide a framework for the research, namely, power, process, partnership, and people. The research approach was qualitative, and conducted over a period of twelve months. The paper ends with an agenda for future research.