3.1.1 The Submarine Assurance Framework defines a hierarchical set of Goal
based requirements relevant to the design, construction or maintenance of a
submarine. The requirements relate to key safety related aspects of submarine
design, construction and maintenance consistent with those defined in the NSubC and
are to be agreed as appropriate and sufficient for the purposes of the project by
the key project stakeholders.
3.1.2 As is common with Goal based requirements, the framework provides
Functional Objectives which are considered to satisfy the Goals. Performance
Requirements are provided which are considered to satisfy the Functional Objectives.
3.1.3 The Performance Requirements are qualitative and independent of technical
or operational solutions, which allows a range of solutions to be proposed,
justified and accepted. Performance Requirements are satisfied through the
application of appropriate project specifications, Rules, Codes and standards which
are selected and proposed by the designer, builder or maintenance organisation. The
relevance and application of the project specifications, Rules, Codes and standards
to and during the design, construction and maintenance of the submarine will be
independently verified by LR.
Figure 2.3.1 Goal based structure