# DST-01 — Defensive Strength Tool - 01 > Advisory tool for mild steel shielding against pressure equipment failure projectiles. (iPhone/iPad app by True Severity LLC.) - Source: https://appshunter.io/ios/app/dst-01/id6517347383 (this page in markdown: same URL + `.md`) - Developer: [True Severity LLC](https://appshunter.io/developer/1755809198) - Category: Reference, Education - Price: $34.99 - Rating: 5.00/5 from 3 App Store ratings - Age rating: 4+ - Requires: iOS 17.0 · 4 MB - Languages: English - Released: 2024-07-09 - Data updated: 2026-08-20 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/dst-01/id6517347383/reviews.md ## What is DST? Welcome to DST-01 by True Severity LLC! DST-01 is an advanced advisory app designed to evaluate mild steel (e.g., ASTM A36) shielding against energized projectiles from pressure equipment failures. Ideal for professionals engaged in pressure equipment testing and hazard risk mitigation. Key Features: - Pressure Hazard and Projectile Shielding Assessment: Analyzes the effectiveness of protective mild steel panels against pressurized releases. - User Input Parameters: Enter fluid type (e.g., water, oil, or nitrogen), maximum fluid pressure and volume, projectile details, fracture mechanism, and shielding dimensions. - Attachment Strength Calculation: Outputs approximate weld or fastener strength requirements for protective mild steel panels. - Severity Gauge: Provides users with an energy-based severity gauge to assist with pressure hazard risk assessments. Usage Instructions: 1. Choose between single projectile and diverging projectiles evaluation. 2. Select fluid type (e.g., water, oil, or nitrogen) and enter the maximum fluid pressure and volume. 3. Input projectile details, including seal and impact diameters and engagement length. 4. Select fracture mechanism (i.e., ductile or brittle fracture). 5. Enter mild steel shielding panel dimensions (i.e., width, height, and thickness). Disclaimer: DST-01 is advisory and should not replace professional judgment. True Severity LLC disclaims liability for any use or misuse of the app. For assistance, contact True Severity LLC. While we strive to ensure the accuracy and usefulness of DST-01, True Severity LLC makes no guarantees or warranties, express or implied, regarding the accuracy, reliability, or completeness of any information provided through the application. The use of DST-01 and any reliance on its results are at the user's own risk. True Severity LLC disclaims any and all liability for any direct, indirect, incidental, consequential, or punitive damages arising out of or related to the use, misuse, or inability to use DST-01. This includes, but is not limited to, damages for loss of profits, business interruption, personal injury, or property damage. Users of DST-01 are solely responsible for ensuring the proper application and interpretation of the data and results provided by the app. True Severity LLC advises users to seek professional assistance when implementing risk mitigation measures. The app's outputs are to be used as advisory and not as definitive solutions. By using DST-01, users agree to indemnify, defend, and hold harmless True Severity LLC, its officers, directors, employees, agents, and affiliates from and against any claims, liabilities, damages, losses, and expenses, including reasonable attorneys' fees and costs, arising out of or in any way connected with the use or misuse of DST-01. True Severity LLC reserves the right to update or modify this Liability Disclosure Statement at any time without prior notice. Users are encouraged to review this statement periodically for any changes. Continued use of DST-01 after any modifications constitute acceptance of the updated terms. ## Key features - Projectile shielding assessment - User input parameters for fluid and pressure - Attachment strength calculation - Energy-based severity gauge - Single and diverging projectile evaluation ## Frequently asked questions about DST ### What is DST-01 used for? DST-01 is an advisory tool designed to evaluate the effectiveness of mild steel shielding against energized projectiles that may result from pressure equipment failures. It helps professionals assess risks associated with pressure hazards. ### What kind of information can I input into DST-01? You can input fluid type (water, oil, nitrogen), maximum fluid pressure and volume, projectile details (seal and impact diameters, engagement length), fracture mechanism (ductile or brittle), and mild steel shielding panel dimensions (width, height, thickness). ### Does DST-01 provide definitive solutions for safety? No, DST-01 is advisory and should not replace professional judgment. The app's outputs are intended to be used as guidance, and users are solely responsible for the proper application and interpretation of the data. ### What are the supported devices for DST-01? DST-01 is supported on iPhone and iPad devices. ### How often is DST-01 updated? The latest version, 2.1, was released on August 1, 2024, indicating regular updates to the application. ### What is the price of DST-01? DST-01 is a paid application priced at $34.99. ### Is DST-01 suitable for all ages? DST-01 has an age rating of 4+, suggesting it is appropriate for a wide range of users, though its technical nature is geared towards professionals. ### Does DST-01 have ads? DST-01 does not contain advertisements, providing an uninterrupted user experience focused on its analytical functions. ## Version history (last 3 releases) ### 2.1 — 2024-08-01 Improvements. ### 2.0 — 2024-07-29 Includes a Diverging Projectiles Evaluation tool, for assessing two projectiles moving away from each other from a common origin or point of disconnection. Provides users with an energy-based Severity Gauge to assist with pressure hazard risk assessments. Also includes specificity on projectile properties and protective structures, to defend against the unplanned release of energy. ### 1.0 — 2024-07-10 No release notes. ## Apps similar to DST | App | Rating | Price | Category | | --- | --- | --- | --- | | [Harrington's Chemical Guide](https://appshunter.io/ios/app/harringtons-chemical-guide/id1342437082) | 5.0 (1) | Free | Reference | | [Combustible Dust Assessment](https://appshunter.io/ios/app/combustible-dust-assessment/id1084471473) | — | Free | Reference | | [OilField Hydrostatic Pressure.](https://appshunter.io/ios/app/oilfield-hydrostatic-pressure/id921528975) | — | $0.99 | Reference | | [Squad 9’s Assessment Tool](https://appshunter.io/ios/app/squad-9s-assessment-tool/id6466397023) | — | Free | Reference | | [ASTM 6B Table](https://appshunter.io/ios/app/astm-6b-table/id6480513283) | — | $1.99 | Reference | | [Ballista: Ballistic Calculator](https://appshunter.io/ios/app/ballista-ballistic-calculator/id6740790245) | 4.7 (10) | Free | Reference | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*