AttackTree 5.0.1 Released

October 2021 - Isograph are pleased to announce the release of AttackTree 5.0.1

  • A requirements analysis may now be performed for an attack tree gate. A requirements analysis determines the path sets for the gate and determines which requirements have been assigned to each event path.
  • Requirements may now be assigned to gates and primary events in an attack tree. Requirements assigned to gates may also be assigned an event path.

Reliability Workbench 15 Released

July 2020 - Isograph are pleased to announce the release of Reliability Workbench 15

  • A verification tab has been added to the ‘End effects’ dialog in FMECA.  End effects may represent system hazards and users may now verify that a safety system has been designed to achieve a tolerable hazard rate.  Verification can be performed by RBD, fault tree analysis or Markov.
  • FMEA (AIAG/VDA) action priority values are now automatically calculated for failure modes. Users may also set a MSR preference in the project options dialog. Detection is renamed Monitoring if this option is selected.
  • A requirements object has been added to the FMECA module. Requirements may be attached to failure modes.
  • A Residual probability analysis function has been added for both the RBD and FT modules. This analysis method is based on the EASA CS-25 standard.
  • Modifications have been made to the Prediction module to allow users to comply with the IEC 61709 standard. Two new project options have been added that allow users to apply the 61709 piT constant and dormant failure method when using the SN 29500 standard. The SN 29500 standard now allows users to enter reference failure rates for individual components as an option.

Availability Workbench 4.0 Released

April 2019 - Isograph are pleased to announce the release of Availability Workbench 4.0

  • Client-side project differencing has been introduced (Tools menu).
  • The Enterprise GUI has been modernised.
  • The help system now displays help in the user's default browser by default. The help files are HTML5 based using a responsive layout that caters for resizing of the parent browser.
  • Excel import and export now handles multi-line text fields.
  • Import/Export to Excel has been speeded up for very large Excel files.
  • Bitmaps may now be stored inside a project.
  • Plugins may now perform simulations and analyses so long as the appropriate module licence is available.

Reliability Workbench 14 Released

February 2019 - Isograph are pleased to announce the release of Reliability Workbench 14.0

  • The help system now displays help in the user's default browser by default. The help files are HTML5 based using a responsive layout that caters for resizing of the parent browser.
  • The RBD module now has an append facility allowing users to append systems blocks from external projects. Blocks are only appended if there is a component block with the same ID in the target project.
  • Bitmaps may now be stored inside a project.
  • The Sequential Model failure model type has been extended for fault tree and RBD analysis. The extended model enables accurate averaging calculations to be performed taking into account sequencing. The model also provides for modelling revealed double and triple latent (dormant) failures that are revealed before a flight (for aircraft applications), a journey for (automotive and rail applications) or a mission.
  • A paste special function has been added to the SSA module allowing sub-projects to be automatically attached using linked functions.
  • DAL values (SAE 4754A) are now calculated for functions in the SSA module. DAL values are assigned to each classification.
  • The SSA module now allows users to enter up to 3 effects for each failure. Effects and effect types are now organised into 3 categories. The user may change the description of each effect category in the project options dialog.

Hazop 7.0 Released

Hazop+ 7.0

July 2018 – Isograph are pleased to announce the release of Hazop+ 7.0.

Hazop+ 7.0 introduces a number of features to allow Hazop+ to implement the recommendations of the IEC 61882-2016 standard. These include sample projects, the ability to rename study columns and the concept of session participant roles. Also introduced in this version is an autocomplete feature, this is applicable to text input fields on various data sheets. To read more about these and the many other new features click on the link below.
Read more about the new features in Hazop+ 7.0

Attack Tree 4.0 Released

AttackTree 4.0

May 2018 – Isograph are pleased to announce the release of AttackTree 4.0

AttackTree 4.0 provides a framework for threat modelling, performing threat analysis and risk assessment according to well known standards such as J3061 and ISO-26262. Users may also customize the analysis using their own consequence categories and severity weightings, likelihood categories and risk levels.

Read more about the new features in AttackTree 4.0