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Development and application of equipment maintenance and safety integrity management system 总被引:1,自引:0,他引:1
Wang Qingfeng Liu WenbinZhong Xin Yang JianfengYuan Qingbin 《Journal of Loss Prevention in the Process Industries》2011,24(4):321-332
Equipment management in process industry in China essentially belongs to the traditional breakdown maintenance pattern, and the basic inspection/maintenance decision-making is weak. Equipment inspection/maintenance tasks are mainly based on the empirical or qualitative method, and it lacks identification and classification of critical equipment, so that maintenance resources can’t be reasonably allocated. Reliability, availability and safety of equipment are difficult to control and guarantee due to the existing maintenance deficiencies, maintenance surplus, potential danger and possible accidents. In order to ensure stable production and reduce operation cost, equipment maintenance and safety integrity management system (MSI) is established in this paper, which integrates ERP, MES, RBI, RCM, SIL and PMIS together. MSI can provide dynamic risk rank data, predictive maintenance data and RAM decision-making data, through which the personnel at all levels can grasp the risk state of equipment timely and accurately and optimize maintenance schedules to support the decision-making. The result of an engineering case shows that the system can improve reliability, availability, and safety, lower failure frequency, decrease failure consequences and make full use of maintenance resources, thus achieving the reasonable and positive result. 相似文献
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水解酸化-SBR工艺在食品加工废水处理中的应用 总被引:2,自引:0,他引:2
某食品加工厂原有的废水处理厂处理工艺不能满足GB8978-1996《污水综合排放标准》中一级标准的要求,需要改造,改造采用混凝沉淀-水解酸化-SBR处理工艺。 相似文献
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Yangyang Liang Qingbin Song Naiqi Wu Jinhui Li Yuan Zhong Wenlei Zeng 《Frontiers of Environmental Science & Engineering》2021,15(6):115
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热锻过程中温度对成形过程的影响是显著的,了解热锻过程中工模具内温度场的分布对控制锻件的成形是有利的.此文对考虑对模阶段的盘形件热锻过程进行了热力耦合分析,得到了各种变形场量和温度信息,对实际生产有一定的指导作用. 相似文献
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Zhang Bo Yuan Qingbin Wang Meng meng Sun Ruonan Liu Huiling Wang Peng 《Environmental science and pollution research international》2021,28(12):14423-14433
Environmental Science and Pollution Research - Though heavy metals are widely reported to induce antibiotic resistance propagation, how antibiotic resistance changes in response to heavy metal... 相似文献
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污泥生物脱毒后土地利用对农作物及土壤环境的影响研究:田间试验 总被引:3,自引:0,他引:3
以水稻为实验材料,通过田间小区实验研究了制革污泥在生物脱毒前后以及脱毒污泥和化肥混施对旱作水稻生长和土壤环境的影响.结果表明,原始制革污泥对水稻的生长有明显的抑制作用,产量与对照比较下降了27%;而经脱毒后的污泥对水稻的生长与对照比较有明显的促进作用,分蘖明显,水稻苗期叶绿素含量、生物量(鲜重)和产量分别增加了17.3%、17.96%、16.95%;污泥和化肥混合施用的水稻的产量增加了20%.同时,脱毒后污泥的施用提高了土壤中有机质的含量,增加到29.79%,全N的含量提高了20.00%.但是,施用生物脱毒污泥一个季度后土壤pH有所下降;土壤中的重金属铬有所增加,但仍未超过土壤环境质量一级标准.重金属铬主要富集在水稻根部,籽粒中铬的含量没有超过食品安全的标准.长期施用脱毒污泥要考虑环境安全性问题,即使对于生物沥浸处理后的污泥也最好不施用到进入食物链的农地上,可用在园林绿化等用途上. 相似文献
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近年来,新型抗性基因以其易传播和耐药广等特性,展现出比传统抗性基因更严峻的健康风险,在临床卫生领域受到广泛关注,但目前对其在环境中的行为和风险研究很少.为此,考察了2种有代表性的新型抗性基因MCR-1和NDM-1的污染特征,并借助荧光定量PCR探索了长江下游(南京段)及附近污水厂和自来水厂中MCR-1和NDM-1的分布特征,进而采用RDA(冗余性分析)评价了分布特征受水质指标的影响效果.结果表明:①污水厂进水中MCR-1和NDM-1绝对丰度较高,且随处理流程呈下降趋势,总去除率分别为92.5%和92.7%,但出水中MCR-1和NDM-1绝对丰度仍分别达2.5×108和7.0×106 copies/L.②长江下游(南京段)各采样点MCR-1和NDM-1绝对丰度的范围分别为8.5×107~3.5×109和4.3×105~2.1×107 copies/L,随水流方向呈降低趋势,但在个别采样点出现异常升高的情况,主要受该区域人为污染的影响.③自来水厂处理工艺对MCR-1和NDM-1去除率分别为75.0%和70.6%,但出水中存留的MCR-1和NDM-1绝对丰度分别达1.4×107和6.3×104 copies/L,且MCR-1和NDM-1在排泥水中大量富集.④MCR-1绝对丰度与ρ(CODCr)、ρ(NH3-N)、电导率呈正相关,而NDM-1绝对丰度仅和浊度存在弱相关关系,与其他水质指标无明显相关性.研究显示,污水处理工艺无法有效去除MCR-1和NDM-1,大量抗性基因通过污水厂出水排入长江,同时自来水厂以含有较高绝对丰度抗性基因的长江水作为水源水,最终自来水厂出水中残存的抗性基因可能进入人体,生态健康风险较大. 相似文献