【文章內(nèi)容簡介】 e locally developed. You’ll see an example in a following case study ? Other categories can be added. Used With Permission ?? AlliedSignal 1995 Dr. Steve Zinkgraf 3/12/2023 Definition of RPN Terms ? Severity (of Effect) importance of effect on customer requirements could also be concerned with safety and other risks if failure occurs (1=Not Severe, 10=Very Severe) ? Occurrence (of Cause) frequency with which a given Cause occurs and creates Failure Mode. Can sometimes refer to the frequency of a Failure Mode (1=Not Likely, 10=Very Likely) ? Detection (capability of Current Controls) ability of current control scheme to detect: ? the causes before creating failure mode ? the failure modes before causing effect ? 1=Likely to Detect, 10=Not Likely at all to Detect Used With Permission ?? AlliedSignal 1995 Dr. Steve Zinkgraf 3/12/2023 R A T I N G D E G R E E O F S E V E R I T Y L I K E L I H O O D O F O C C U R R E N C E A B I L I T Y T O D E T E C T1 C u s t o m e r w i l l n o t n o t i c e t h e a d v e r s e e f f e c t o ri t i s i n s i g n i f i c a n tL i k e l i h o o d o f o c c u r r e n c e i s r e m o t e S u r e t h a t t h e p o t e n t i a l f a i l u r e w i l l b ef o u n d o r p r e v e n t e d b e f o r e r e a c h i n gt h e n e x t c u s t o m e r2 C u s t o m e r w i l l p r o b a b l y e x p e r i e n c e s l i g h ta n n o y a n c eL o w f a i l u r e r a t e w i t h s u p p o r t i n gd o c u m e n t a t i o nA l m o s t c e r t a i n t h a t t h e p o t e n t i a lf a i l u r e w i l l b e f o u n d o r p r e v e n t e db e f o r e r e a c h i n g t h e n e x t c u s t o m e r3 C u s t o m e r w i l l e x p e r i e n c e a n n o y a n c e d u e t ot h e s l i g h t d e g r a d a t i o n o f p e r f o r m a n c eL o w f a i l u r e r a t e w i t h o u t s u p p o r t i n gd o c u m e n t a t i o nL o w l i k e l i h o o d t h a t t h e p o t e n t i a lf a i l u r e w i l l r e a c h t h e n e x t c u s t o m e ru n d e t e c t e d4 C u s t o m e r d i s s a t i s f a c t i o n d u e t o r e d u c e dp e r f o r m a n c eO c c a s i o n a l f a i l u r e s C o n t r o l s m a y d e t e c t o r p r e v e n t t h ep o t e n t i a l f a i l u r e f r o m r e a c h i n g t h en e x t c u s t o m e r5 C u s t o m e r i s m a d e u n c o m f o r t a b l e o r t h e i rp r o d u c t i v i t y i s r e d u c e d b y t h e c o n t i n u e dd e g r a d a t i o n o f t h e e f f e c tR e l a t i v e l y m o d e r a t e f a i l u r e r a t ew i t h s u p p o r t i n g d o c u m e n t a t i o nM o d e r a t e l i k e l i h o o d t h a t t h e p o t e n t i a lf a i l u r e w i l l r e a c h t h e n e x t c u s t o m e r6 W a r r a n t y r e p a i r o r s i g n i f i c a n t m a n u f a c t u r i n go r a s s e m b l y c o m p l a i n tM o d e r a t e f a i l u r e r a t e w i t h o u ts u p p o r t i n g d o c u m e n t a t i o nC o n t r o l s a r e u n l i k e l y t o d e t e c t o rp r e v e n t t h e p o t e n t i a l f a i l u r e f r o mr e a c h i n g t h e n e x t c u s t o m e r7 H i g h d e g r e e o f c u s t o m e r d i s s a t i s f a c t i o n d u et o c o m p o n e n t f a i l u r e w i t h o u t c o m p l e t e l o s s o ff u n c t i o n . P r o d u c t i v i t y i m p a c t e d b y h i g h s c r a po r r e w o r k l e v e l s .R e l a t i v e l y h i g h f a i l u r e r a t e w i t hs u p p o r t i n g d o c u m e n t a t i o nP o o r l i k e l i h o o d t h a t t h e p o t e n t i a lf a i l u r e w i l l b e d e t e c t e d o r p r e v e n t e db e f o r e r e a c h i n g t h e n e x t c u s t o m e r8 V e r y h i g h d e g r e e o f d i s s a t i s f a c t i o n d u e t o t h el o s s o f f u n c t i o n w i t h o u t a n e g a t i v e i m p a c t o ns a f e t y o r g o v e r n m e n t a l r e g u l a t i o n sH i g h f a i l u r e r a t e w i t h o u t s u p p o r t i n gd o c u m e n t a t i o nV e r y p o o r l i k e l i h o o d t h a t t h e p o t e n t i a lf a i l u r e w i l l b e d e t e c t e d o r p r e v e n t e db e f o r e r e a c h i n g t h e n e x t c u s t o m e r9 C u s t o m e r e n d a n g e r e d d u e t o t h e a d v e r s ee f f e c t o n s a f e s y s t e m p e r f o r m a n c e w i t hw a r n i n g b e f o r e f a i l u r e o r v i o l a t i o n o fg o v e r n m e n t a l r e g u l a t i o n sF a i l u r e i s a l m o s t c e r t a i n b a s e d o nw a r r a n t y d a t a o r s i g n i f i c a n t D Vt e s t i n gC u r r e n t c o n t r o l s p r o b a b l y w i l l n o te v e n d e t e c t t h e p o t e n t i a l f a i l u r e10 C u s t o m e r e n d a n g e r e d d u e t o t h e a d v e r s ee f f e c t o n s a f e s y s t e m p e r f o r m a n c e w i t h o u tw a r n i n g b e f o r e f a i l u r e o r v i o l a t i o n o fg o v e r n m e n t a l r e g u l a t i o n sA s s u r e d o f f a i l u r e b a s e d o nw a r r a n t y d a t a o r s i g n i f i c a n t D Vt e s t i n gA b s o l u t e c e r t a i n t y t h a t t h e c u r r e n tc o n t r o l s w i l l n o t d e t e c t t h e p o t e n t i a lf a i l u r eGeneral Rating Scales 3/12/2023 1,2 Cosmetic Error No loss in product functionality. Includes incorrect documentation 3,4 Product Performance Reduction Temporary Through timeout or system load the problem will “go away” after a period of time 5,6 Functional Impairment / Loss The problem will not resolve itself, but a “work around” can temporarily bypass the problem area until fixed without losing opera