exSILentia 是新的綜合型安全生命週期工具,由美國自動化安全領域權威exida.com, L.L.C. 所研發出來。集合了SIL選擇,安全需求規範和SIL認證的功能。當系統在遵循功能安全標準的時候,就得需要對安全生命週期有一個清晰的看法。
exSILentia 驗證工具可以為每一個專案和集合了幾個安全器械功能的系統建立起獨立的SILect, SIF SRS和 SILver 記錄。exSILentia 自動生成的檔都可以用在遵循 ANSI/ISA 84.00.01:2004, IEC 61508和 IEC 61511 這些需要安全生命週期行為的功能安全標準的報告裏面。
產品特色
- 新穎的圖形使用者介面
- 建構用戶定義的風險圖表
- 根據LOPA計算所需的SIL(使用詳細的頻率根據目標)
- 多重風險校準可以在單個項目中用於SIL選擇
- 可從初步危害分析(PHA)匯入資料
- 自動生成的驗證試驗規範
- 生命週期成本評估
降低風險
為了降低某些機械設備的風險,可能會需要溫度超限停車、速度超限保護或安全停車功能。對於上述每一種保護,你都需要辨別和指定所需要減低的風險程度,以達到每一種SIL等級的要求。一台收縮包裝機可能造成勒傷或其他機械傷害。用其他保護設備設置一個防護或隔離裝置就可以避免這種傷害。如果其中包含有火焰或加熱裝置,你就需要溫度超限保護或是火焰探測器保護功能。
在某些情況下,你可能需要改變設計;因為沒有任何一種安全設備能夠降低所有類型的危險。幸運的是,實際生活中的大多數事情經過討論後都不需要安全功能。即便是這樣,人們還是編寫了安全規範,並進行相應的檢查和測試。對每一個設備的故障可能性分析應該根據SIL等級的規範要求進行。為每一個設備設置安全功能,進行風險評估,然後重新檢查設計。列印輸出、報告以及文檔編制都是必需的。保護分析層(LOPA)的研究可以應用於各種危險情形,據稱,在不需要額外工作或是複雜程式的情況下,它可以給出風險的可能性估計。
如果傷害的可能性或是後果超過了為這個設備選擇的計算水準,那麼設計者、集成商或最終用戶就不得不改用更好的設備,增加更多安全/冗餘措施或是進行更加頻繁的測試。這三種方法可以使保護功能更加安全。
串列流技術縮短嵌入式系統設計週期
對電機進行變速控制,可在正常運轉的條件下選擇效率最高的運行速度。由於僅僅使用速度控制就可提高效率30%以上,設計工程師已熱衷於在下一代家電產品中使用變速電機驅動。
改進電機調速控制應對環保設計挑戰
採用極小型嵌入式計算平臺的新浪潮正在湧入工業、醫療、消費和其他重要的應用領域。除了有小尺寸以外,小型的現成計算部件為設計者提供了完整的處理性能和 I/O 特性,而且具有專有的和標準的兩種形狀因數。
水質觀測站的控制和視窗
在與萊茵蘭—法爾茨州的水力經濟州級主管部門商談的計畫基礎之上精選出來的系統結構,可以低成本和有效的解決預先規定的任務。特別是傳導系統和SPS軟體的結合使用更有助於成本的降低。
從這一點來說,整個過程同通常的工程過程一樣。唯一的不同就是風險的可能性評估。
不要採取過多的措施;你可以再做一遍。
超過工程要求的安全措施可能反倒與最初目的背道而馳;最好的設計應該確保最快、最有效的操作手段也是最安全和最可行的。這個過程需要始終保持活力。不管人員、過程、設備或規章制度發生了任何改變,你都應該對人員再次進行培訓,並且重新評估風險。
Full integration of all lifecycle phases |
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Hazard Scenario basis for LOPA and SIL selection |
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User Customization of : |
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Improved data export capability |
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Ability to hyperlink references |
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Improved data import capability |
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Seamless Data Flow |
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Libraries (safeguards, recommendations, references, hazard scenarios) |
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Improved user friendliness : |
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Support for logic solvers with multiple AI/DI/AO/DO modules as well as TC and RTD modules |
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Support for IEC61508 Route 1H and 2H architectural constraints |
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Ability to embed references |
» PHA - Process Hazard Analysis tool
» LOPA - Layer of Protection Analysis tool
» PHA + LOPA - Combined Process Hazard Analysis and Layer of Protection Analysis tool
» Alarm - Alarm Rationalization tool
» Standard - Base functionality for all users requiring Functional Safety standard compliance
» Analysis - Additional functionality for the Process Hazards Analysis phases of the Process Safety work process and Safety Lifecycle
» Operation - Additional functionality for the Operation phases of the Safety Lifecycle
» Ultimate - Complete exSILentia Safety Lifecycle tool functionality
Lifecycle Activity | Module | Functionality | PHA | LOPA | PHA+LOPA | Alarm | Standard | Analysis | Operation | Ultimate | Enterprise |
Functional Safety Management, Auditing and Assessment | IEC 61511 Compliance Documentation | Checklist for Documenting Compliance with IEC 61511 Standard | V | V | V | V | V | V | V | V | V |
Hazard & Risk Assessment (Process Hazard Analysis) | PHAx | Record results of Process Hazards Analysis (PHA) / Hazard and Operability Study (HAZOP) | V | V | V | V | V | ||||
Allocation of Safety Functions to Protection Layers (SIL Target Selection) | LOPAx | Likelihood Analysis | V | V | V | V | V | V | V | ||
SILect | Safety Integrity Level (SIL) Selection (Risk Graph, Risk Matrix, Frequency Based Targets) | V | V | V | V | V | |||||
SILAlarm | Alarm Rationalization per ISA 18.2, EEMUA 191 | V | V | V | |||||||
Safety Requirements Specification (SRS) | Process SRS | Process level Safety Requirements Specification | V | V | V | V | V | ||||
Design and Engineering of SIS (incl. SIL verification) | SILver | Safety Integirty Level Verification, IEC 61508 compliant calculation engine | V | V | V | V | V | ||||
SERH Viewer | Viewer for exida Safety Equipment Reliability Handbook database (over 2000 devices) | V | V | V | V | V | |||||
Lifecycle Cost Estimator | Evaluate Lifecycle cost of proposed SIF designs | V | V | V | |||||||
Design SRS | Detailed Design level Safety Requirements Specification | V | V | ||||||||
SRSC&E | Creation of SIF and SIS Cause & Effect | V | V | ||||||||
Operation and Maintenance | Proof Test Generator | Creates proof test procedures for each component (organized by SIF) | V | V | V | ||||||
Modification | SILStat | Recording of SIF life event data (proof test results, failures, demands) for comparison of actual to expected performance | V | ||||||||
Verification | Built-in | Peer review capability based on login allows review / approval of tool output | V | V | V | V | V | V | V | V | V |
The user’s system should meet the following minimum requirements:
- MicrosoftR Windows 2000, Windows XP, Windows Vista, Windows 7 (all service packs installed)
- 32-bit and 64 bit supported
- Personal Computer with Pentium 700 MHz or higher processor
- 512 MB recommended
- 100 MB of free hard disk space
- CD-ROM drive (to install software)
- Free USB port (for licensing key)
- MicrosoftR Internet Explorer 6.0 or later (for updates and online content)
- Minimum screen resolution of 1200 x 800
Alarm Rationalization with SILAlarm
SILAlarm™ is a tool for facilitating and documenting the results of alarm rationalization in a master alarm database. It was developed in accordance with the ISA-18.2 standard “Management of Alarm Systems for the Process Industries” and EEMUA 191. SILAlarm guides a rationalization team through a systematic, tailorable process of reviewing, justifying and documenting the design of each alarm.
Maximizing Risk Reduction through Collection and Analysis of Operation & Maintenance Data.
SILStat™ is exida’s Life Event Recorder tool. It allows you to capture key operational and maintenance data (such as equipment failures, process demands, success or failure of protection layers, proof test results, etc.,) for review and analysis as required by the IEC 61511 / ISA 84.00.01-2004 standards and as part of compliance with an OSHA PSM Mechanical Integrity Program.
Computer system high level architecture design analysis
exida provides the ARCHx tool for performing architectural design analysis using FMEA, HAZOP, or Cybersecurity Threat Analysis techniques. Dependent failure Analysis (DFA) is also optimally done within the ARCHx tool. This tool stores architectural design information in its system database so that a common approach can be used for all analysis types thereby saving engineering time and improving design quality. ARCHx system database information is sent to other design tools (e.g. FMEDAx) to pre-populate input requirements, again saving time and reducing design errors.
Device failure rate and failure mode prediction for safety and availability analysis
The exida FMEDAx™ Tool is used to perform and document a detailed component level FMEDA on a System or Subsystem consisting of electrical, mechanical, or sensor components. The FMEDAx tool accepts the functional failure mode data from ARCHx and allows faster and more accurate subsystem/device failure prediction. Designers save time and discover design issues early in the design process.