Patent Number: 
Section: claims

1. A system for evaluating reliability of a component, where said system evaluates credibility of a constituent information and a conformity of a candidate component to environmental regulations, for composing a product, comprising:an input unit;an output unit;a processing unit; anda memory unit,wherein the memory unit comprises:a component basic information table which retains identification information that distinguishes each item of a component;a constituent information table which retains information on constituents contained in the component and a content of each of the constituents; andan environmental qualification information table which retains information on constituents contained in the component for each item and a investigation result of conformity of the component to environmental regulations by establishments, andwherein the processing unit comprises:means which accepts selection of a target component through the input unit;means which accepts identification information that classifies components similar to the target component through the input unit;means which extracts a component similar to the target component based on the identification information of classified components similar to the target component by referring to the component basic information table and the constituent information table, and calculates constituents contained in the similar component and a content of each of the constituents;means which calculates each of the constituents contained in the target component and the content of each constituent, based on the content of each constituent of the component similar to the target component, which is obtained from the constituent information table, the content of each constituent being weighted based on a number of establishments that investigated the similar component, which is obtained from the environmental qualification information table;means which evaluates credibility of the evaluation of the conformity to environmental regulations based on a difference between the content of the constituent in the target component and the content of the constituent in the similar component, the constituent being used for the evaluation of the conformity to environmental regulations among the constituents contained in the target-component; andmeans which evaluates a conformity of the target component to environmental regulations by using the number of establishments that have already investigated the similar components and a total number of the similar components with a result of a qualification “pass ”, which are obtained from the environmental qualification information table;wherein the output unit outputs the result of the conformity/credibility evaluation. 2. A system according to claim 1, wherein the processing unit comprises:means which accepts selection of a status of the target component through the input unit;means which makes a re-investigation request attached with the result of investigation of the target component to a manufacturer of the component when the re-investigation is selected as the status;means which makes a qualification request to a component final confirmation personnel when adoption is selected as the status; andmeans which returns to the input unit of basic information of the target component when non-adoption is selected as the status. 3. A system according to claim 1, wherein the component similar to the target component is extracted referring to the component basic information table by searching for the similar component based on the identification information of the target component according to a definition of the similar component. 4. A method for evaluating reliability on component, which evaluates credibility of an evaluation result of conformity of a component to environmental regulations, comprising the steps of:calculating constituents contained in a target component and a content of each of the constituents referring to a constituent information table based on identification information of the target component and evaluating conformity of the constituent to environmental regulations based on the content;extracting a component similar to the target component referring to an environmental qualification information table and calculating constituents contained in the similar component and a content of each of the constituents; andevaluating credibility of evaluation of the conformity to environmental regulations based on a difference between the content of the constituent in the target component and the content of the constituent in the similar component, the constituent being used for the evaluation of the conformity to environmental regulations among the constituents contained in the target component.