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SIL4 Systems Announces… Universal Safety Product Development Pack

Covers ALL PHASES of Safety Process

1.  Concept and Program Plans

2.  Definition and Application Conditions

3.  Hazard and Risk Analyses

4.  Requirements and Apportionment

5.  Design and Test

6.  Validation

7.  Manufacturing Introduction

8.  Commissioning

9.  Field Monitoring

(+)  includes…  Plans and Reports

(+)  includes…  Change Management

(+)  includes…  Regression Analysis


ROI BENEFITs far exceed the cost:

Savings in any one of these areas above will more than justify ROI:

(+)    Cost equivalent to one man-month of engineering time which will easily be saved during the Dev Process.

(+)    Standardize Doc Support Forms

(+)    Control & Manage Content and Traceability

(+)    Assure correctness & completeness

(+)    Assure errors in process and design are found as early as possible.   


At SIL4, we assist with the difficult, time consuming and costly tasks required to deliver safety critical products to the market.  We have over 30 years of experience in designing and delivering demanding safety critical systems that acceptably manage risk and comply with more pervasive safety standards:

  • IEC61508: Functional Safety of Electrical/Electronic/Programmable Electronic Safety-related Systems
  • ISO26262-2011: Road Vehicles – Functional Safety
  • IEC61601: Safety Requirements for Medical Electrical Systems
  • IEC13849: Safety Of Machinery
  • IEC61511: Functional Safety – Safety Instrumented Systems for the process industry sector.
  • EN50126: Railway Applications – The Specification of Reliability, Availability, Maintainability and Safety (RAMS).
  • EN50128: Railway Applications – Communications, Signaling and processing systems – Software for Control and Protection Systems.
  • EN50129: Railway Applications – Communications, Signaling and processing systems – Safety related Electronic Systems.
  • EN50159: Safety Related Communications for Rail Transit
  • IEC60987: Nuclear power plants – Instrumentation and control important to safety. Hardware design requirements for computer-based systems.
  • IEC62138: Nuclear power plants – Instrumentation and control important for safety – Software aspects for computer-based systems (Cat B or C).
  • DO-254: Design Assurance Guidance for Airborne Electronic Hardware.
  • DO-178B: Software Considerations in Airborne Systems and Equipment Certification.
  • MIL-STD-882: Dept. of Defense System Safety Standard
  • FRA 49 / CFR Parts 209, 234, and 236: Standards for Development and Use of Processor-Based Signal and Train Control Systems.

Our Electrical Engineering consulting services include solutions for all computer controlled embedded systems and if instead of fail-safe, mission critical design, your is one of High Reliability and Availability – we can help you Lead The Field.


SIL4 can enable your Safety Critical Application in the following ways:

  • Assess the safety implications of projects, and determine the measures necessary to meet safety needs. Including architectures review and recommendations, system and circuit design and implementation.
  • Cover all phases of the life of a safety-critical system from its conception and specification, design and verification through to its certification, installation, service and decommissioning.
  • PHA – Preliminary Hazard Analysis; SHA – System Hazard Analysis;
  • SSHA / FMEA – Sub-system Hazard Analysis / Failure Modes and Effects Analysis and FTA – Fault Tree Analysis
  • OSHA – Operation and Support Hazard Analysis
  • FMEA – All types and levels: From System FMEA and Sub-system FMEA, to Design FMEA, Process FMEA and Software FMEA to assure completeness and level of safety requirements. And recommended architecture / design approaches to assess and bound the necessary level of safety assurance and arrive at the most effective, efficient and robust approach possible. We will assist you from concept through certification, if needed.
  • FMECA – Failure Modes, Effects and Criticality Analysis
  • FMEDA – Failure Modes, Effects and Diagnostics Analysis which combines standard FMEA techniques with extensions to identify real-time diagnostic techniques.
  • Calculating required SIL-Levels
  • SFF – Safe Failure Fraction the fraction of the overall failure rate of a device that results in either a safe failure or a detected unsafe failure.
  • PFD –Probability of Failure on Demand which is the measure of safety integrity for the SIF. It is the probability that
    the safety instrumented function will fail in a manner which will render it incapable of performing its intended safety function.
  • Intrinsic Safety Design – Design architecture, testing and compliance.
  • Turnkey embedded HW and SW design to implement Safety Integrity Levels (SIL) from SIL0 to SIL4.
  • Provide scalable, safety critical embedded computing and I/O platforms to accelerate your application/product development.

To learn more about how SIL4 can help with your particular Safety Critical needs please contact us:

SIL4 Systems Inc.
669 Washington Road
Pittsburgh, PA 15228