强化油站规范管理 促进安全基础建设

随着我国加入WTO的日益临近,作为窗口单位的加油站必须面对国际商家的激烈竞争。要在竞争中立于不败之地,必须加强自身建设。制订可行的规范标准,强化加油站的规范管理,树立中国石化加油站的形象,展示加油站的精神风貌。     

开展油库达标活动 促进油库安全管理

围绕开展油库达标管理活动,对全省系统油库进行调查摸底,使得油库的分类定位有了依据。根据定位分类,制定分类管理目标。加强安全组织和领导,规范基础管理,完善和落实安全生产责任制。加强监督检查考核,狠抓油库的隐患整改工作。突出人本管理,组织全员教育培训工作。抓点带面促进油库的安全管理工作。     

关于油罐区安全技术的探讨

油罐区是油库及石化炼油企业非常重要的组成部分,油罐区的安全关系到企业的整体运营。安全技术在油罐区的应用,对油库的安全起着非常重大的作用。     

油罐汽车承包后应强化安全管理

油罐汽车是否公司运输汪品的专用工具,在油罐汽车承包后不能放任彼注,更应强化安全管理,保证国家财产不受损失,使的工作正常运转。     

尾矿库工程管理系统

建立了尾矿库工程管理系统,包括尾矿库数据库,尾矿库稳定性分析系统,尾矿库洪水模拟系统和尾矿库观测系统,对发生尾矿库工程灾害的可能性和危害程度做出判断和评估,可适时指导尾矿库的安全使用,避免尾矿库工程灾害的发生。     

安全阀在线校验系统的研制

本文介绍了安全阀在线校验系统的构成及其工作原理,并对系统的重要组成部分－－ＤＸＺ１００型数据采集器的研制及处理软件的关键模块的设计进行了较详细的叙述。该系统通过对校验过程中的提升力的实时检测和记录,能够自动识别提升力曲线中的开启拐点和回座损点,并计算安全阀的开启压力和回座压力。     

Symptom-based reliability and generalized repairing cost in monitored bridges

This paper proposes the use of structural safety formulations conceived to take into account the presence of periodic monitoring systems. Monitoring is a valid tool to improve the safety of those structural systems that cannot withstand invasive tests or interventions that would alter their nature or their intended use. Reliability can be defined as a function of a measurable quantity that reflects the damage, referred to as symptom, and it can also be defined as a function of several symptoms considered simultaneously. A knowledge of the current value of a symptom makes it possible to determine the residual damage capacity and the residual lifetime of a structure. Redefining structural safety in terms of residual lifetime provides the theoretical framework for the introduction of vibration-based monitoring activities in probabilistic formulations. In the last part of the paper, by relating damage to reliability with respect to collapse, the generalized maintenance cost for a concrete bridge deck was analyzed in order to verify the economic advantages offered by dynamic monitoring.     

SMV model-based safety analysis of software requirements

Fault tree analysis (FTA) is one of the most frequently applied safety analysis techniques when developing safety-critical industrial systems such as software-based emergency shutdown systems of nuclear power plants and has been used for safety analysis of software requirements in the nuclear industry. However, the conventional method for safety analysis of software requirements has several problems in terms of correctness and efficiency; the fault tree generated from natural language specifications may contain flaws or errors while the manual work of safety verification is very labor-intensive and time-consuming. In this paper, we propose a new approach to resolve problems of the conventional method; we generate a fault tree from a symbolic model verifier (SMV) model, not from natural language specifications, and verify safety properties automatically, not manually, by a model checker SMV. To demonstrate the feasibility of this approach, we applied it to shutdown system 2 (SDS2) of Wolsong nuclear power plant (NPP). In spite of subtle ambiguities present in the approach, the results of this case study demonstrate its overall feasibility and effectiveness.     

Architectural constraints in IEC 61508: Do they have the intended effect?

The standards IEC 61508 and IEC 61511 employ architectural constraints to avoid that quantitative assessments alone are used to determine the hardware layout of safety instrumented systems (SIS). This article discusses the role of the architectural constraints, and particularly the safe failure fraction (SFF) as a design parameter to determine the hardware fault tolerance (HFT) and the redundancy level for SIS. The discussion is based on examples from the offshore oil and gas industry, but should be relevant for all applications of SIS. The article concludes that architectural constraints may be required to compensate for systematic failures, but the architectural constraints should not be determined based on the SFF. The SFF is considered to be an unnecessary concept.     

Integrating RAMS engineering and management with the safety life cycle of IEC 61508

This article outlines a new approach to reliability, availability, maintainability, and safety (RAMS) engineering and management. The new approach covers all phases of the new product development process and is aimed at producers of complex products like safety instrumented systems (SIS). The article discusses main RAMS requirements to a SIS and presents these requirements in a holistic perspective. The approach is based on a new life cycle model for product development and integrates this model into the safety life cycle of IEC 61508. A high integrity pressure protection system (HIPPS) for an offshore oil and gas application is used to illustrate the approach.