【正文】 以及濕硫化氫引起的損傷等缺陷,從技術(shù)和管理角度介紹了停輸換管、帶壓封堵維修、焊接修復(fù)、帶壓開孔切除、夾具補(bǔ)強(qiáng)、纖維復(fù)合材料補(bǔ)強(qiáng)、復(fù)合套筒修復(fù)、加強(qiáng)監(jiān)管和定期檢測等多種常用的缺陷處理方法,分析了不同方法的原理和優(yōu)缺點(diǎn),為在役天然氣長輸管道運(yùn)行管理及缺陷處理提供了技術(shù)支撐.【館藏單位】：【篇名】淺析天然氣長輸管道外防腐檢測與治理【ISSN】：16745167【出版年】：2015【卷】：000【期】：036【起頁】：65【止頁】：65【總頁數(shù)】：1【館藏號】：【關(guān)鍵詞】：外防腐層。【語種】：漢語【文摘】：城市天然氣在給城市發(fā)展帶來巨大便利的同時(shí)，同時(shí)天然氣管線不可避免的老化、腐蝕及人為破壞等原因，可能會(huì)產(chǎn)生天然氣管線泄漏，如果對其處置不當(dāng)，極易發(fā)生嚴(yán)重的后果?！攫^藏單位】：中國科學(xué)技術(shù)信息研究所（五）國家科技圖書文獻(xiàn)中心的西文數(shù)據(jù)庫（NSTL）()列舉出部分檢索結(jié)果（含摘要）。Temperature drop calculation。414234【語種】：英語【文摘】：The success of the Case Based Reasoning system depends on the quality of the case data and the speed of the retrieval process that can be costly in time, especially when the number of cases gets bulky. To guarantee the system39。Realtime PCR。 Natural gas。 2015 Elsevier . All rights reserved.2.Risktargeted safety distance of reinforced concrete buildings from naturalgas transmission pipelinesPaola Russoa, System SafetyVolume 148, April 2016, Pages 57–66Highlights?The safety of buildings against blast loads due to pipeline accidents is assessed.?A probabilistic risk assessment procedure is presented for naturalgas pipelines.?The annual risk of collapse of reinforced concrete building columns is evaluated.?Monte Carlo simulation was carried out considering both pipeline and column features.?A risktargeted safety distance is proposed for blast strength class 9.AbstractNaturalgas pipeline accidents mostly result in major damage even to buildings located far away. Therefore, proper safety distances should be observed in land use planning to ensure target safety levels for both existing and new buildings.In this paper, a quantitative risk assessment procedure is presented for the estimation of the annual probability of direct structural damage to reinforced concrete buildings associated with highpressure naturalgas pipeline explosions. The procedure is based on Monte Carlo simulation and takes into account physical features of blast generation and propagation, as well as damage to reinforced concrete columns. The naturalgas jet release process and the flammable cloud size are estimated through SLAB onedimensional integral model incorporating a release rate model. The explosion effects are evaluated by a MultiEnergy Method. Damage to reinforced concrete columns is predicted by means of pressure–impulse diagrams. The conditional probability of damage was estimated at multiple pressure–impulse levels, allowing blast fragility surfaces to be derived at different performance limit states. Finally, blast risk was evaluated and allowed the estimation of minimum pipelinetobuilding safety distances for riskinformed urban planning. The probabilistic procedure presented herein may be used for performancebased design/assessment of buildings and to define the path of new naturalgas pipeline networks.KeywordsZhibin Denga,– over the performance period studied – are: Williams, El Paso and Kinder Morgan。 US, Clockspeed acceleration。University of Ljubljana, Faculty of Mechanical Engineering, A?ker?eva 6, 1000 Ljubljana, Sloveniab Natural gas pipeline。 Fatigue。, Competitive analysis。Return On Net Operating Assets。 RF, LDC, FERC, EBIT, CAPM,Department of Geotechnology, Delft University of Technology, PO Box 5048, 2600GA Delft, The NetherlandsReceived 16 October 2009, Revised 17 March 2010, Accepted 23 March 2010, Available online 24 April 2010Applied EnergyVolume 87, Issue 8, August 2010, Pages 2455–2466AbstractThis study presents the clockspeed analysis of a peer group prising six major integrated US energy panies with substantial US interstate natural gas pipeline business activities: El Paso, Williams, NiSource, Kinder Morgan, MidAmerican and CMS Energy. For this peer group, the three clockspeed accelerators have been benchmarked at both corporate level and gas transmission business level, using timeseries analysis and crosssectional analysis over a 6year period (2002–2007). The results are visualized in socalled clockspeed radargraphs. Overall Natural gas pipeline。 fax: +39 06 44585451.Copyright 169。Department of Structures for Engineering and Architecture, Pipeline network。The Faculty of Mechanical Engineering, Shahrood University of Technology, Shahrood, IranReceived 23 August 2015, Revised 13 December 2015, Accepted 15 December 2015, Available online 18 December 2015 Journal of Natural Gas Science and EngineeringVolume 28, January 2016,Pages 397–409Highlights?Natural gas pipeline network deliver natural gas from the production points to the consumers.?An analytical approach carried out to analysis unsteady natural gas pipeline network.?A wellknown gas pipeline network has been analyzed for validation purpose.?The effect of various parameters investigated on the unsteady pipeline network.AbstractThe natural gas pipeline network (including distribution network) may be subjected to some extreme conditions such as pipeline rapture, sudden changed demand and etc. The behavior of natural gas pipeline network should be properly identified to prevent network failure and have continued pipeline operation under these extreme conditions. These conditions usually cause unsteady behavior of the pipeline network. Consequently, it is necessary to develop an unsteady state mathematical method to study natural gas pipeline network under unsteady conditions. To achieve this goal, an analytical approach has been developed to analyzed natural gas pipeline network. The governing equations derived for onedimensional isothermal pressible viscous flow with Kirchhoff39?！痉诸愄枴浚篘94。Gas line。Risk assessment。 對于內(nèi)檢測服務(wù)商，質(zhì)量是其開拓市場的生命線；對于管道企業(yè)，質(zhì)量是其保障管道本質(zhì)安全的生命線。泄漏檢測。缺陷。收起（四）國家科技圖書文獻(xiàn)中心的中文數(shù)據(jù)庫檢索題名：“內(nèi)檢測”或“天然氣長輸管道”1.【篇名】無損檢測方法在天然氣長輸管道裂紋檢測中的應(yīng)用【ISSN】：10084800【出版年】：2015【卷】：000【期】：036【起頁】：89【止頁】：91【總頁數(shù)】：2【館藏號】：【關(guān)鍵詞】：無損檢測。目的是提供的裝置能夠滿足較大直徑管道尤其是彎頭處的測厚要求，并具有在運(yùn)動(dòng)過程中穩(wěn)定性好、檢測精度高、檢測效率高等特點(diǎn)。一種管道內(nèi)檢測數(shù)據(jù)處理方法摘要：檢索詞：管道內(nèi)檢