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Functional requirements are supported by non-functional requirements (also known as "quality requirements"), which impose constraints on the design or implementation (such as performance requirements, security, or reliability). Generally, functional requirements are expressed in the form "system must do <requirement>," while non-functional ...
Domestic appliances used for water treatment not connected to water supply: 20.06.2013: Active CEN/TC 427: Services of Medical Doctors with additional qualification in Homeopathy: 07.08.2013: Active CEN/TC 428: e-competences and ICT Professionalism: 28.08.2013: Active CEN/TC 429: Food hygiene - Commercial warewashing machines - Hygiene ...
A functional specification is the more technical response to a matching requirements document, e.g. the Product Requirements Document "PRD" [citation needed]. Thus it picks up the results of the requirements analysis stage. On more complex systems multiple levels of functional specifications will typically nest to each other, e.g. on the system ...
Axiomatic design is a systems design methodology using matrix methods to systematically analyze the transformation of customer needs into functional requirements, design parameters, and process variables. [1] Specifically, a set of functional requirements(FRs) are related to a set of design parameters (DPs) by a Design Matrix A:
IEC/EN 62061, ”Safety of machinery: Functional safety of electrical, electronic and programmable electronic control systems”, is the machinery specific implementation of IEC/EN 61508. It provides requirements that are applicable to the system level design of all types of machinery safety-related electrical control systems and also for the ...
NSF International, originally named the National Sanitation Foundation (NSF), was founded in 1944 by the University of Michigan School of Public Health, in an attempt to standardize requirements around sanitation and food safety. [1] The first standards developed by the NSF set sanitation requirements on soda fountain and luncheonette equipment.
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IEC 61511 covers the design and management requirements for SISs throughout the entire safety life cycle. Its scope includes: initial concept, design, implementation, operation, and maintenance through to decommissioning. It starts in the earliest phase of a project and continues through startup.