Transcript Document
Restriction of Certain Hazardous Substances (RoHS) Restriction of Certain Hazardous Substances (RoHS) Directive reference : 2002/95/EC Member states shall ensure that from 1st July 2006, new EEE put on the EU market does not contain 6 restricted substances Article 4.1 of RoHS directive states the following 6 substances 1. Lead (Pb) 2. Cadmium ( Cd) 3. Mercury(Hg) 4. Hexavalent Chromium ( Cr6) 5. Polybrominated Biphenyles ( PBB) 6. Polybrominated Diphenyle Ether ( PBDE) Restriction of Certain Hazardous Substances (RoHS) Where these substances are used ?? Some examples… • Lead is used in almost all solder joint & lead finish. • Cadmium is used in cable sheathing as anti corrosive agent for protecting connectors & fixing in salt spray conditions. • Mercury is used in thermostats, sensors & various forms of energy saving lamps • Hexavalent chromium is used in metal coatings for corrosion protection and wear resistance • PBB & PBDE are fire retardant materials and added to PCB, connectors, Plastics etc. Restriction of Certain Hazardous Substances (RoHS) • As per the directive prohibition of other hazardous substances shall be decided as soon as scientific advice is available • Directive is applicable to WEEE falling under categories 1,2,3,4,5,6,7 & 10 of annex 1A of WEEE directive. • 8 & 9 will have delayed start. • RoHS directive does not apply to spare parts for the repair or reuse of EEE put on the market before 1st Jul 2006 Restriction of Certain Hazardous Substances (RoHS) Are there any limits for the substances ? • For the purpose of RoHS regulations, a maximum concentration value of up to 0.1% by weight in homogeneous materials for Lead, Mercury, Hexavalent Cr, PBB, PBDE and up to 0.01% by weight in homogeneous materials for Cadmium will be permitted in the manufacture of EEE ( DTI, UK ) 1. Lead (Pb) 1000 ppm 2. Cadmium ( Cd) 100 ppm 3. Mercury(Hg) 1000 ppm 4. Hexavalent Chromium ( Cr6) 1000 ppm 5. Polybrominated Biphenyles ( PBB) 1000 ppm 6. Polybrominated Diphenyle Ether ( PBDE) 1000 ppm Restriction of Certain Hazardous Substances (RoHS) Where to look for these substances ? • All homogeneous components within the product need to conform to the maximum concentration limits by July 1 2006 What is homogeneous material ? • Materials that can not be disjoined into different materials. • Mechanically disjoined means, material that can be separated by mechanical actions such as unscrewing, cutting, crushing, grinding & abrasive process • Understood as uniform composition throughout – like plastic, ceramics, metals, alloys, etc. Restriction of Certain Hazardous Substances (RoHS) Who is responsible ? Producer • Produces are required to keep appropriate records for a period up to 4 years after the use. Who is a producer ? Any person / company who irrespective of selling technique used, • Manufactures & sells EEE under his own brand • Resells under their own brand, equipment produced by other suppliers • Imports or exports electrical & electronic equipment on a professional basis into member states. Restriction of Certain Hazardous Substances (RoHS) How this will be enforced ? • Test purchases are made in the market • Will be tested for restricted substances • Compliance documents will be requested • issue non compliance notice / ask for actions taken What is the major impact on business ? • EOL – end of life for parts, products have seen a steady upward trend in recent past & is expected to grow at faster rate. Restriction of Certain Hazardous Substances (RoHS) What we need to do ? Even though Medical devices have a late start, • Identify restricted substances in homogeneous materials, get the test reports, verify & document the same. • Look for alternate materials / process where ever restricted substances exceed the limits, also where ever EOL is announced, • PWA soldering process, where, in absence of Pb, soldering temp. goes up, we need to look at the machine, temp. profile, component ratings.