From 49c09e6a278dd30d93f3ac5929c137424b9dd7c3 Mon Sep 17 00:00:00 2001 From: Robin Clark Date: Sat, 22 Jan 2011 14:21:14 +0000 Subject: [PATCH] . --- standards/standards.tex | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/standards/standards.tex b/standards/standards.tex index 6d4e803..24c999c 100644 --- a/standards/standards.tex +++ b/standards/standards.tex @@ -47,8 +47,19 @@ and verification to standard - manufacturing overwatch / supervision word on tip of tounge - \section{ Safety Goals and safety Requirements} +Safety goals can be seen as general principles of safety. +Safety requirements, are speciific to the operatng conditions and environment +that the equipement is used in. +Safety goals can be considered a set of aspirations +to be applied to any system. + +For every Safety requirement $S_{req}$ we should have a related safety goal +$S_{goal}$ for the requirments to be meaningful. + +We can express this as +$$ \forall S_{req} \longrightarrow S_{goal}. $$ + -$$ \forall S_{req} \longrightarrow S_{goal} $$ \section{European or `EN' Standards} \subsection{Scope}