It would seem the final version of the "General Rule of EFUP for EIP"

will provide some indicative figures to use for various types of EIP.

However for now we are left with the draft guide available here:

<<http://www.rohs-international.com/files//General_rule_of_Environment_F

riendly_use_Period_of_Electronic_Information_Products.pdf

<http://www.rohs-international.com/files/General_rule_of_Environment_Fri

endly_use_Period_of_Electronic_Information_Products.pdf> >>



 



 



 



The draft General Rule suggests the EFUP number is calculated thus:



************************************************************************

***********************



4.3.2 Technical Life Method



The formula to calculate EFUP by using product technical life:



EFUP = Technical Life / (average daily working time x 365) (1)



EFUP = Technical Life / (average daily working time x 365) x 125% (2)



 



Formula (1) applies to EIP that can not be repaired; formula (2) applies

to EIP that can be repaired.



 



4.3.3 Safe Use Period Method



If the product has the Safe Use Period, should use the Safe Use Period

as the EFUP.



 



4.3.4 Comparison Method



The new EIP without defined technical life and safe use period should

adopt the EFUP of same or similar category product as its EFUP.



************************************************************************

************************



 



 



 



This now poses the question as to what is "the technical life". From

inference of condition (2) this could mean the MTBF, rather than how

long one might expect the technology to remain current. To arrive at

"15" would imply a MTBF of approx 4 years and daily use of 8hrs giving:

(4x365x24/8x365)x1.25 = 12x1.25 = 15



 



There has been some suggestion not to use numbers over 15 or 20, but for

professional products having MTBF's greater than 20 years and not

running 24/7 this would in fact push the EFUP figure above

60.............



 



 



Has anyone got any other input on this or know when the final "General

Rule of EFUP for EIP" is going to be published??



 



 



 



 



Regards,



Chris



 



 







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