LNG工厂码头模块建造的SIMOPS管理

LNG工厂码头模块的内部布局紧凑,在建造过程中由于作业空间和建造周期的限制,导致作业复杂化且风险等级提高,使SIMOPS管理难度增大。为有效控制作业风险并保障模块按期完工,从建立容许操作矩阵和控制措施两个方面对如何有效实施SIMOPS管理进行研究,在控制措施中重点研究了通用要求、组织机构、PTW系统和会议/培训四个方面。通过严格的SIMOPS管理,有效削减了在该施工区域内作业的11家施工单位,约700人的施工人员间的相互影响,实现了损失工时事件为零和按期完工的项目目标。

Dynamic quantitative risk assessment of LNG bunkering SIMOPs based on Bayesian network

Liquified natural gas(LNG)bunkering simultaneous operations(SIMOPs)refers to the operations(such as cargo operations,port activities and ship maintenance)occurring around LNG bunkering.SIMOPs pose new risks to LNG bunkering,because the operations are dynamically interlocked in which the occurrence probabilities of potential consequences change at different times due to commencement or completion of specific SIMOP events.However,traditional static risk assessment approaches are not able to take the dynamic nature of these new risks into account.This article proposes a dynamic quantitative risk as-sessment(DQRA)methodology based on the Bayesian network(BN)to develop better understanding of dynamic risks of LNG bunkering SIMOPs.The methodology is demonstrated and evaluated through a truck-to-ship LNG bunkering case study.The results and discussion of the case study validate the utility of the proposed methodology and demonstrate that BNs are efficient in performing the probability calcu-lations and are flexible in conducting causal diagnosis.The main innovation of this work is realizing the quantification of risks at different times,which reflects the most essential time-changing characteristics of risks associated with LNG bunkering SIMOPs.

美军空中通信平台频率管理算法简介

概要介绍了空中通信平台集成技术、影响同时工作的诸多因素和实现同时工作所能采取的技术途径,重点研究分析了为兼容工作开发的频率管理算法。