1. www.mimos.my © 2006 MIMOS Berhad. All rights reserved. MIMOS BERHAD TENDER BRIEFING ON THE APPOINTMENT OF CONSULTANT TO STUDY AND PROPOSE POWER QUALITY UPGRADE AT MIMOS FAB MIMOS BERHAD 11 th Feb 2011

2. MIMOS CAMPUS : POWER DISTRIBUTION SYSTEM www.mimos.my © 2006 MIMOS Berhad. All rights reserved. Version 2.0 Public Block East Block West Block Cafe Block Fab Entrance TNB SUBSTATION HT ROOM - MIMOS HT ROOM – FAB 2 HT ROOM – FAB1 HT ROOM –INTEC

3. www.mimos.my © 2006 MIMOS Berhad. All rights reserved. Version 2.0 2010

4. www.mimos.my © 2006 MIMOS Berhad. All rights reserved. Version 2.0 PROBLEM STATEMENT PRESENT SYSTEM & LIMITATION -Electrical system - 2 x 11 kv feeders. Vulnerable to power quality incidents as 11 KV is not CLEAN -2 x 350KVA Diesel gen set for fab 1 and fab 2, are to support emergency lightings, scrubber and other emergency system -Small UPSs to support some critical production equipment. NO back up power for production. -1800A Switch board for Chillers and other facilities equipment under capacity

5. www.mimos.my © 2006 MIMOS Berhad. All rights reserved. Version 2.0 11KV 630A VCB MSB 1 Transformer 1 11KV/433V 2.5MVA Feeder 2 Feeder 1 Transformer 2 11KV/208V 1.5MVA 415V 2500A ACB 208 2500A ACB MSB 2 11KV 630A VCB PRODUCTION MCC MAIN DB UPW DB WW PLANT DB ESSETIAL FACILITY SUPPORT PRESENT POWER DISTRIBUTION AND UTILIZATION AT WAFER FAB 2 DB ETCH DB DVR DB LITHO DB DIFFUSION 1 DB DIFFUSION 2 DB THIN FILM 451KW 360KW 250KW 430KW 200KW 500KW 800KW 250KW 1.55MW 2.2MW NOTE : WAFER FAB 1 HAS SIMILAR CONFIGURATION. THE CURRENT LOADING IS LOW DUE TO NO PRODUCTION

6. www.mimos.my © 2006 MIMOS Berhad. All rights reserved. Version 2.0 WHAT WE PLAN TO DO…. Undertake study to improve the power quality for wafer fab. To propose best option(s) with technically feasible cost effective measures Best practical implementation plan

7. www.mimos.my © 2006 MIMOS Berhad. All rights reserved. Version 2.0 MCC MAIN DB UPW DB WW PLANT DB ESSETIAL DB WW PLANT 11KV 630A VCB 11KV 630A VCB 11KV 630A VCB Incomer Step down Transformer 1 11KV/433V 2.5MVA Feeder 2Feeder 1 Step down Transformer 2 11KV/208V 1.5MVA 415V 2500A ACB 208V 2500A ACB HT LT DB ETCH DB DVR DB LITHO DB DIFFUSION 1 DB DIFFUSION 2 DB THIN FILM PROPOSED UPGRADING OF THE POWER SYSTEM Gen set Batteries UPS

8. www.mimos.my © 2006 MIMOS Berhad. All rights reserved. Version 2.0 Mandatory scopeOptional scope Preliminary Capacity study Proposals review Prepare tender document + drawings Tender evaluation Project management SCOPE OF THE TENDER PROCESS

9. www.mimos.my © 2006 MIMOS Berhad. All rights reserved. Version 2.0 SITE VISIT DATETIME Friday 11 th Feb 11After tender briefing Monday 14 th Feb 1111.00am Wednesday 16 th Feb 1111.00am Thursday 17 th Feb 1111.00am Assemble at MIMOS Lobby: Contact person : Kufad/ Norazri

10. www.mimos.my © 2006 MIMOS Berhad. All rights reserved. Thank you FAB 1. The physical maintenance of system is carried out once every 2 years. In view of the current condition, it as recommend that the servicing and maintenance is carried out on yearly basis. There will be interruption to the FAB operation, but the plan maintenance is to minimize unplanned downtime, as a result of mechanical failure.