[Webinar] September 25th, 2025 - Performing Safety Analyses in Capella with ATICA: Our Experience

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Hello!

I’m delighted to announce that I will be chairing the upcoming Capella Webinar on 25 September, featuring Daniel Villafañe and Fernando Macías from ANZEN Engineering.

Daniel Villafañe is an aerospace engineer specializing in avionics, systems and software engineering, as well as model-based design and analysis. At ANZEN, his work centers on ATICA, where he develops system models and applies systems engineering methods to strengthen safety and reliability analyses in aerospace avionics projects.

Fernando Macías is a software engineer with expertise in model-based methodologies, formal methods, and software design and implementation. At ANZEN, he leads the development and maintenance of ATICA’s features, defines the underlying meta-models used in ATICA and related projects, and oversees the deployment of both web-based and on-premises services.

Together, Daniel and Fernando will share their experience integrating safety and reliability analyses into the Capella ecosystem through the design and use of ATICA. Developed as a Capella add-on and fully aligned with the ARCADIA methodology, ATICA enables engineers to carry out Failure Hazard Analyses (FHA), Failure Mode and Effects Analyses (FMEA), and Fault Tree Analyses (FTA) within a unified modeling and analysis workflow.

In this webinar, you’ll discover how the ATICA methodology extends ARCADIA to embed RAMS activities directly within the system model, using a dedicated safety metamodel and intuitive analysis viewpoints.

Through live demonstrations, Daniel and Fernando will show how FHA, FMEA, and FTA can be executed in Capella, and how updates in one analysis automatically cascade to the others—ensuring consistency across the entire model.

They will also present upcoming developments, including ATICA’s evolution towards SysML v2 and its integration with other tools, further enhancing compatibility within the MBSE ecosystem.

Whether you are a Capella user looking to strengthen your safety processes, or a safety engineer exploring model-based approaches, this webinar will provide valuable insights and practical takeaways.

We look forward to welcoming you!

Registration below:

https://www.bigmarker.com/obeo/performing-safety-analyses-in-capella-with-atica-our-experience?utm_bmcr_source=forum

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Hi everyone!

Thanks again for joining our Anzen webinar on September 25, 2025! We really enjoyed all your questions during the live session. :blush:

As promised, here are the answers to the questions you asked — so you can catch up on anything you might have missed and dive a bit deeper into the topics we discussed.

Requester Question Answer
Clara Sautereau du Part When you presented the standards, you were talking about Aircraft/Aeronautics standards I think. What about Space standards (ECSS)? Are they also already implemented in Atica? Answered live
Charlie Jenkins Part of design assurance is being able to demonstrate that the logical and mathematical basis is validated. Is the ATICA code that handles the Pf computations shareable? What basis does this follow? AQP? Answered live
Charlie Jenkins Is there a possibility to implement alternative safety analysis methodologies via ATICA within Capella? E.g. GSN, ALARP, STPA? ATICA could act as a fully integrated set of safety analysis approaches that could be deployed as appropriate. Answered live
Lea DUMONT How do you considere the mission description during the FHA ? Answered live
Lea DUMONT How to use heritage from previous projects ? and where the existing failure concitions are coming from ? Answered live
Lea DUMONT FTA in ATICA: How / where the computations of cut sets and probablity is done ? inside ATICA ? how an interfaced tool ? Answered live
Santiago Ferreira Which Failure Rate databases are available to use? linke Mil 217, EPRD, NSWR, OREDA? Answered live
Jamie Leach What formats can the FHA and FTA results be exported? to share with partners? Excel word doc? Can the tool retrospectively load data in? say from excel? Answered live
Miguel Angel Broncano Duque Thanks. Here some questions: 1) Does your process implement a Failure Propagation Model (FPM) as mentioned in ERD135? “2) Is your process aligned with the latest release of ERD135 / ARP4761 Rev A, which includes AFHA, PASA, SFHA, PSSA, SSA, and ASA?” “3) Are you familiar with processes such as Interdependence Analysis or Combined Functional Failure Analysis (CoFFA), as referenced in ERD135?” Answered live
Charlie Jenkins How does ATICA support safety and system engineers in proper adherence to the safety and system engineering process? Answered live
Ashwin Sridhar Does ATICA have any features to deal with a Multi-system safety analysis, to make it more efficient and reduce redundancies? Answered live
Eric Coin have any project with ECCS standard analysis ? how to proced , because Sdf are to provid, the allocation and analysis depend of the method to process. Currently, ATICA does not support ECCS standards. Nevertheless, the tool can be tailored to any specific need upon a specific request.
Charlie Jenkins Is it possible to implement an automation to tidy / clean up FTA? Can the taxology be edited as required? We are currently researching better algorithms for MCS calculation which could also help minimize the FTA, but those are not part of Atica yet. Besides, users may not like losing a suboptimal but more understandable implementation in favor of an optimal but obscure one. The tree can currently be edited at will by adding, removing and re-linking gates and events.
Sri Ganesh Buddhavarapu Is it possible to have piece parts (resistor, capacitor etc.) in the physical layer and generator piece part failure modes? Yes. Atica also includes a BoM importer to facilitate this part of the design.
Lea DUMONT How do you make the capitalisation of FMEA data ? in particular when the design changes and some components removed from the design ? If any elements are removed from the model, e.g. a Logical Component which represents a subsystem, the associated failures are not removed but simply unlinked from the model. This would cause them to be removed from the FMEA table view but they could still be accessed from other views, and edited/removed accordingly.
Charlie Jenkins As part of the latest CS25 Amdt, greater interrogation is required in hidden/latent failures. Does ATICA consider and implement enhanced cutset analysis that allows analysing, for example, significantl latent failures to understand if any latencies exceed the E-03 criteria? At the moment, latent failures can be modelled by adjusting the exposure times of basic events in an FTA, but there is not an explicit category for them. It is part of the roadmap to include them eventually, though.
Vlad Scarlatache Have you done any project in automotive industry? So far, we have not participated in automotive projects.
Pierre Timmerman Who is the distributor of ATICA? ANZEN Engineering. Please contact info@anzenengineering.com for further information and quotations.
Charlie Jenkins How are safety, system assumptions and requirements controlled and managed in ATICA? As in how are iterations archived, stored and utilised? There are dedicated model components for each of them. Once defined, e.g. a safety assumption, it can be reused and referenced from any number of failure modes, etc. Assumptions have been developed in the context of Atica and requirements are defined within Capella.
Ricardo Ferraz de Oliveira A great presentation. Do you have a tutorial? Thank you! Please visit our Knowledge Base for extended documentation and tutorials: Atica4Capella Archives - ANZEN
Ignacio Pintos Thank you for the amazing presentation. Did you consider ATICA to growing enterprises that need to comply Safety ECSS satandars? i.e. startups and small students groups Currently, ATICA does not support ECCS standards. Nevertheless, the tool can be tailored to any specific need upon a specific request.
Frank van den Heuvel Is FMEDA according to IEC 61508, ISO 26262 and ISO 13849 supported? ATICA supports FMEA as per ARP4761. We believe an extension to FMEDA will be easy to develop upon a specific request.
Paul Ransley Thanks, nice demo, nice to seen potential for chaining the tools. In the FTA you mentioned MCS’s, does the addins provide : a) the analysis gives a listing of these? b) importance measures? c) support for dependent failures? Sorry if I missed where this was covered. Yes, the list of MCSs is generated and refreshed every time the probability for the top event is calculated. A limit can be set for the total size of the list and/or the number of basic events which enable the cutset. The list includes the relative importance of each cutset, Birnbaum or Fussesl-Vesely.
Eric Coin Could explain more what is coupled with capella, , is the template only for ARP754A ? or could de tailoring for ECSS ? Currently, ATICA does not support ECCS standards. Nevertheless, the tool can be tailored to any specific need upon a specific request.
Petri Solanti Do you have plans to implement ISO26262 standard? For FMEA and FTA, Atica could support ISO26262 with minimum adaptations, and we will tackle that development if a client requests it.
Ricardo Ferraz de Oliveira Can we add standards ourselves? All the views and processes in Atica follow primarily ARP4754B and ARP4761A. Changing the standards followed by the tool would require adaptations of the source code and models, so it is not an available operation for the end user.