治理施工合同缺陷的对策分析

施工合同缺陷是指合同条款存在欠缺和不完善的地方,也就是指存在于施工合同中,不具体、不明确的合同规定,使得当事人不能履行或不能全面履行,容易产生合同纠纷的合同条款。针对通用条款与专用条款中存在的缺陷,提出了解决的四项对策:修订完善施工合同范本、在订立合同时通过对施工合同专用条款的补充来完善合同内容、完善相关法律制度、加强合同管理人员的素质建设。     

40Mn2圆钢成品剪切断口裂纹成因分析与对策

40Mn2圆钢作为锰系合金结构钢产品,因其良好的加工性和使用性广泛用于机加工行业,本文介绍了该产品在用户机加工冷剪剪切下料及圆钢轧后冷剪剪切工序中产生端部裂纹的基本形貌,分析了产生此问题的冶炼及轧制工艺原因,并针对此现象采取降低铸坯中心疏松、减少气孔、提高剪切温度等对策,最终解决这一问题。     

如何防范供用电合同的法律风险

由于供用电合同签订与履行中许多实质性的法律问题未能得到足够重视和妥善解决,使供电企业面临一系列的法律风险。分析了供用电合同业务中存在的问题,从多个方面阐述了对合同法律风险的防范对策。     

Evaluation of corrosion behaviors for reactor pressure vessels/primary containment vessels in Fukushima Daiichi units 1–3 nuclear power plant

Fukushima Daiichi nuclear power plants (1F) were damaged by unprecedented severe accident in the Great East Japan Earthquake on 11 March 2011, and seawater has been injected as an emergency countermeasure for the core cooling. Although, the RPV and PCV were not supposed to be exposed to diluted seawater, they have been exposed to diluted seawater environment or high-moisture environment. Therefore, seawater corrosion has become an important issue. Immersion corrosion tests were performed for low-alloy steel of RPV material and carbon steel of PCV material in 1F cooling-water-simulated environment. As a result, the mass loss by corrosion was reduced with the decreasing temperature and chloride ion concentration. Moreover, the effects of nitrogen deaeration and Na₂WO₄ addition on corrosion protection were remarkable among the selected corrosion countermeasures. In addition, the integrity assessments of RPV and PCV were performed considering the reduction of plate thickness based on corrosion test data and the load condition based on earthquake response analysis results. It had been confirmed that primary stresses for RPV and PCV equipment satisfied with the allowable values until at least 15 years after the accident.     

液化石油气的质量问题及对策

永坪炼油厂120×104t/a催化裂化及液化石油气精制装置通过优化催化反应温度≯510℃,提高解吸塔底温度至(130±2)℃,降低再吸收塔顶压力至(1.05±0.02)MPa,改善了产品中硫的分布;同时,加大吸收稳定系统注水量,调整液化气精制操作,使液化气质量达到GB 11174—1996标准要求。     

园林工程投标文件中存在的问题及对策

针对近年来园林绿化施工企业的投标文件中存在的各种问题,通过对园林绿化工程投标文件中存在问题及对策的分析,以提高投标文件的准确性,进而提高项目中标率。     

谈建筑工程施工现场消防安全及管理

阐述了建筑工程施工现场消防安全状况,总结了消防安全存在的问题,并就其影响因素作了分析,进而提出了消除安全隐患的对策,加强消防安全管理,确保施工顺利进行。     

化工工程的安全监理问题与思考

针对当前化工安全监理工作中存在的认识误区,阐述了安全监理的概念及依据,分析了化工工程安全监理现状及问题,并提出了安全监理对策,以避免化工工程中一些安全事故的发生。     

试论道路桥梁施工中的问题及对策

结合近年来的工作实践,将桥梁施工中出现的裂缝、钢筋锈蚀及铺装层松散脱落等问题作了归纳,同时分析了问题的产生原因,并提出了解决问题的对策,以保证施工质量,促进桥梁施工业的发展。     

分户储热间接换热式太阳能热水系统设计探讨

讨论了分户储热间接换热式太阳能热水系统各组成部分的设计,给出了已知储热水箱换热盘管参数,探讨了换热循环泵流量的计算方法,并阐述了防止水箱热量逆流的控制方式,以期指导实践。