Functional safety management

Satisfactory safety rating A motor carrier has in place and functioning safety management controls adequate to meet that portion of the safety fitness standard prescribed in 49 CFR 385.5. 

What parts of the safety lifecycle are subject to functional safety management ... 

KNOWLEDGE-BASED SYSTEM FOR FUNCTIONAL SAFETY MANAGEMENT... 

Figure 2. Computer-aided functional safety management system.

In the paper some aspects related to the human reliahiUty analysis (HRA) in the context human-machine interface (HMI) design and functional safety management are discussed. 

Kosmowski K. T. (ed.) 2007. Functional Safety Management in Critical Systems. Gdansk University Foundation of Progress, Gdansk. 

Once the technical work and analysis is completed and the appropriate documents developed, reviews and audits of the technical work and resultant documents must be performed. Depending upon the consequences of the hazard identified in the safety function, a certain, defined level of independance is required between the originator and reviewer (assessor). This may mean a different department within the same company (preferrably one that has expertise with functional safety management and lEC 61508/62061) or outside certified SIL reviewers/ assessors. 

Functional safety management as per lEC 61508 group of standards for a company means ... 

Implement safety standards Specification and implementation of program of work to achieve accredited certifications for each of the organization for functional safety management systems. 

Full Functional Safety Capability (now called Functional Safety Management) including implementation on a project or product—30 to 60 man-days + several 000 for certification by an accredited body (i.e. SIRA). 

Corporate Functional Safety Management This concerns the competency required to develop and administer functional safety within an organization. 

In order to justify adequate functional safety management to satisfy Part 1 of the standard, it is necessary to provide a documented assessment. 

The need for Functional Safety Capability (more recently called Functional Safety Management) has been described in Chapter 2, Section 2.3 and also in Appendix 1. lEC 61508 Part 2 (Hardware) and Part 3 (Software) expect this to have been addressed. 

SIL, safety integrity level FS, functional safety FSM, functional safety management. 

In the first case, it is the raft of procedures and work practices, together with the competence of individuals, which is being assessed. This is known as the Functional Safety Capability (FSC) of an organization and is now more commonly referred to as Functional Safety Management (FSM). It is demonstrated by an appropriate quality management system and evidenced by documented audits and examples of the procedures being used. 

Functional safety management requires that a safety plan is produced to identify the required activities/strategy for SREC design, application software, integration, verification, and validation. 

If the project is deemed to be safety related then the Project Manager shall appoint an independent Project Safety Assessor. However, a project may be declared sufficiently minor that formal hazard identification is not required and that the remainder of this procedure need not apply. That decision will only be undertaken or ratified by the Company Functional Safety Manager. 

The HR department will maintain a safety-related competence register containing profiles of those individuals eligihle to carry out functional safety assessment and design tasks. Periodically the Managing Director and Functional Safety Manager will review the list. 

In some cases existing safety assessments will have to be based on only Integrity targeting. Random hardware failures, ALARP, and Architectures (safe failure fraction). The Company Functional Safety Manager should advise that this represents only a part of the spectrum of functional safety assessment. 

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