Associated Technology Pipeline Ltd Protecting Pipelines .

Associated Technology Pipeline LtdProtecting pipelines &reputationsPiMSlider SoftwareThe PiMSlider software fromAssociated TechnologyPipeline Ltd is one of themost powerful PIMS softwaresolutions on the market. Oursoftware . . .Is an off-the-shelf softwaresolution developedspecifically for pipelineexperts.Statoil & PiMSlider Software – Anoperator’s experience of usingPiMS softwareThis paper Statoil discuss their experience using the PiMSlidersoftware solution for the integrity management of pipelines inoperation. The tool includes a series of base objects thatcontains data related to design and inspection input, called“Views”. These Views are used as a form of input data for allother PiMSlider different modules. The ability to choose datafrom these “views” gives the user a comprehensive overview ofpipeline integrity management.It can also be seen as a database where new pipeline informationis registered and then made available for further integrityanalysis. In addition, it comprises of several modules formanaging various specialized integrity areas of a pipeline. Themodules used in Statoil are Threat and Mitigation Expert,Reporting Expert, Internal Condition Expert (for corrosionmanagement) and Inline Inspection Expert module.Is a suite of integratedmodules that can processany pipeline, population andor environmental-relatedinformation in an integratedway for all phases of thepipeline integritymanagement process.Has highly specialisedmodules which can integratedata from any sourcesavailable to a pipelineoperator, such as PODS,APDM, GIS, SAP, Maximo orany other proprietarydatabaseCan implement local, federaland state standards whichyour company may uses aspart of your its integrityprocesses.You can have access to aworking system at thebeginning of the project andtry it before you buy.INTRODUCTIONWithin Statoil, the center for pipeline integrity management isrepresented by an organization entitled “Transport Net”, in short“TN”. The technical structure of TN is described in Fig. 1.Associated Technology Pipeline Ltd, 3b Mansfield Business Park, Lymington Bottom Road,Medstead, Hampshire, GU34 5PZ, UK.Tel: 44 (0) 1420 565 601

Fig. 2 Integrity management cycleFig. 1 Technical structure of TNTN has in its portfolio about 10.000 km pipelinestransporting gas, condensate, oil and chemicals.The pipelines are mostly subsea lines but somereach shore and have an onshore section. Thesize of the lines is from 8” up to 44” and inwater with depth up to 580 meters.TN organization comprises of four departmentswhich are covering the entire cycle of pipelineintegrity management (Fig. 2) as follows:Technical integrity department is responsible forplanning and coordination of different work andinspections. In addition, it has the responsibilityof updating pipeline data, various events alongthe year that are connected to pipelineintegrity, the overview for contracts and variousconditions and the issuing of annual reports toall customers.Technical Discipline department is responsiblefor the technical evaluation of pipelines. Thetechnical evaluation includes corrosionmonitoring, following up cathodic protection(CP) for offshore / onshore, product monitoring,chemical injection, structural evaluation, flowassurance, pipeline protection systems, subseavalves and leak detection for oil pipelines andfollow up of operational pigging.Technical services department is responsible foroperational support to short time limit / ad-hocactivities; technical support for modificationsand project development; execution ofmaintenance (on behalf of both TN and others);experience in tunnel projects; TN Pipeline stock.As part of the integrity management cycle, Fig.2, PiMSlider is used by TN for administration,collection, monitoring and inspection data,analyses of inspection data, and also in riskanalysis activities related to pipeline integrity.The risk assessment used is based on Statoilinternal technical requirement, Preventiveactivities for Rigid Pipeline Systems (2015),which is related to external standards andrecommendations as DNV-RP-F116 (2014), DNVOS-F101 (2014), ISO 13623 (2009) and ISO15589 (2009). PiMSlider performs riskassessment based on threats associated withpipelines (i.e. internal and external threats), andevaluates the inspection data in comparisonwith design data and furthermore evaluate theoverall risk for the pipeline. The software helpsto perform a quick screening evaluation overthe whole pipeline and if deeper evaluations arerequired other specialized tools are used, i.e.buckle tool, corrosion prediction models.It is valuable that all the parties responsible forpipeline integrity management use a commonplatform, as pipeline integrity involves varioustechnical disciplines for specific areas. However,at the same time, the platform needs to servespecific technical areas. Therefore, informationsharing within the same platform and crossdisciplines is highly important for a lean workprocess. As such, the PiMSlider solution waschosen by TN in 2012. The tool has a friendlygraphical user interface (GUI), whichincorporates all work within the same softwareand is satisfying the different technical disciplineneeds. It can also be seen as a data model forstoring and organizing pipeline data in adatabase to implement PIMS.Associated Technology Pipeline Ltd, 3b Mansfield Business Park, Lymington Bottom Road,Medstead, Hampshire, GU34 5PZ, UK.Tel: 44 (0) 1420 565 601

In the following sections, various features ofPiMSlider software are presented, and also giveinsights of the TN methodology for pipelineintegrity management.Internal Condition Expert (for Corrosionmanagement) and Inline Inspection Expertmodule (ILI). In the following sections themodules are described.PIPELINE INTEGRITY MANAGEMENT SYSTEMS(PiMSlider) SOFTWAREThreat and Mitigation Expert modulePiMSlider ViewsWithin PiMSlider tool, an important part of thesoftware interface is the “Views” section. Theseviews represent a variety of base objects thatcontain data related to design and inspectioninput. In addition to views, the tool works as adatabase where new pipeline information iseasily registered and then made available forfurther integrity analysis.Some data input is imported automatically inPiMSlider for ex. data from external surveys andsome other data input are manually registered,for examples evaluations that are performed forreports.Various events that have influence on thepipeline integrity can be logged in the viewcalled “Events List”, this is introduced manually.The Views can be used as input data to variousPiMSlider modules; Fig. 3 presents the HOMEview.Fig. 3 Home view of PiMSliderIn addition to views, PiMSlider consists ofseveral modules for managing integrity issues ofa pipeline. The modules used in Statoil are:Threat and Mitigation Expert, Reporting Expert,This is the main module for overall integrityevaluations and receives input from the othermodules such as Internal Condition, ILI and alsofrom views such as Corrosion probe andonshore pipeline inspection (in regards to CPprotection). Threat and Mitigation Expertmodule, presented in Fig. 4, allows the user todescribe relevant threats, build integrity modelsand follow up-to-date authority requirements.Fig. 4 Threat and Mitigation moduleIn Fig. 5 it is sketched a step by stepmethodology (workflow) for data input andintegrity assessment of pipeline structure for aspecific line with in Threat and Mitigation Expertmodule.The workflow for pipeline structure evaluationwas developed by TN engineers, and describesthe methodology for data input and integrityassessment for a specific pipeline with in Threatand Mitigation Expert module. Other disciplinesare using similar workflows.Fig. 5 Workflow for pipeline structure evaluationIn Threat and Mitigation Expert module asignificant amount of inspection data, fromexternal survey made by Remote OperatedAssociated Technology Pipeline Ltd, 3b Mansfield Business Park, Lymington Bottom Road,Medstead, Hampshire, GU34 5PZ, UK.Tel: 44 (0) 1420 565 601

Vehicles (ROV), is compared with the designdata. The pipeline threats are defined for eachindividual pipeline systems i.e. free spans,buckling and trawling. An integrity model isestablished for individual threats defined for thepipeline system to calculate the probability offailure (POF) by comparing the survey data withthe design limits. Once POF is established forindividual threats, a total integrity model isestablished for the entire pipeline system bysumming up the POF from threat integritymodels. The Consequence of Failure (COF) forthe pipeline systems is defined based on DNVOS-F101 combined with technical requirementsof the company. Once POF and COF areestablished for the pipeline system, a Risk BaseInspection (RBI) study will be carried out foreach pipeline section based on calculated risk.Engineering judgment is used alongside theassessment that is performed in PiMSlider. Theaction or mitigation plan for a pipeline systemtypically includes external inspection, detailedstudies, seabed intervention etc.Integrity evaluation for the whole system isperformed under Threat and Mitigation Expertmodule. Integrity evaluation gives an overviewover all evaluations that are completed for apipeline. Threats for the pipeline system can bedefined in integrity evaluations.Internal/External assessments can bedocumented here based on data screening fromPiMSlider, and also from other integrity toolsthat are used for deeper assessments.Templates for the various reports are createdand evaluations are performed for specific areas/ sections as it can be seen in Fig. 6. Previousevaluations are easily available just by filteringthe data, if needed for comparison reasons.Fig. 6 Integrity evaluation in Threat andMitigation Expert moduleAs a conclusion, in Threat and Mitigation Expertmodule the threats are analysed and mitigationactions are undertaken.Internal Condition ExpertThe Internal Condition Expert module (IC), Fig.7, provides corrosion management which isused to assess the internal condition of apipeline, by displaying corrosion/integrityrelated parameters of the transported product.For the moment the module is implemented forgas pipelines and is ongoing forliquid/multiphase pipelines.Fig. 7 Internal Condition moduleOnline measurements are recorded forparameters related to corrosion/integrity andstored in an excel data base template. This datais imported and mapped with the sensorslogged in IC module. Monitoring of relevantparameters is performed following the workflow presented in Fig. 8.Fig. 8 Work flow for IC moduleIn IC module one can define and describe:- an unlimited number of type of parameters(such as Temperature, Pressure, Flow CO2, H2Setc.) and assign captions for them (i.e. units,acceptable limits, etc.)- an unlimited number of type of product (Drygas, Rich gas, Liquid, Multiphase etc.), whichAssociated Technology Pipeline Ltd, 3b Mansfield Business Park, Lymington Bottom Road,Medstead, Hampshire, GU34 5PZ, UK.Tel: 44 (0) 1420 565 601