FACTORY Green Initiatives in SDSS - SEMI.ORG | Green Initiatives in SDSS Hem Takiar Jul th14 , 2015...
Transcript of FACTORY Green Initiatives in SDSS - SEMI.ORG | Green Initiatives in SDSS Hem Takiar Jul th14 , 2015...
SanDisk Confidential
FACTORY Green Initiatives in SDSSHem Takiar
Jul 14th, 2015
SanDisk Confidential
SDSS ‐ SanDisk Semiconductor (Shanghai) Co., Ltd.
SanDisk Confidential
SDSS Introduction
CSR99% participant; 3,300
+hrs
AwardsGolden Bee Innovation Green
SanDisk Confidential
SDSS Water Usage MapDomestic274
Facility3701
Canteen120
Toilet70
Drinking water60
Laundry24
Total water usage: 7156 ton/day
Process3181
Backgrinding1563
Wafer saw972
Package saw410
SMT144
Others92
DI plant3369
Cooling water991
Sprinkler for N2 evaporator
757
Landscaping120
Boiler50
SanDisk Confidential 5
SDSS Water Recycling Map• Process Usage Water
70% recycled(2230 of 3181 ton)
Backgrind
39% recycled(612 of 1563
ton)
Other Process
100% recycled
(1618 of 1618 ton)
951 tondrainage
• Facility Usage Water
88% recycled(3265 of 3701 ton)
DI plant
98% recycled
(2485 of 2540 ton)
55 tondrainage
Cooling tower
77% recycled(757of 991
ton)
234 tonvaporized
Boiler
48% recycled
(24 of 50 ton)
26 ton humidified
Landscape
0% recycled
(0 of 120 ton)
120 ton drainage
• Domestic Water
44% recycled(120 of 274 ton)
154 tondrainage
120 ton waste water recycled from the drainage of toilets,
canteen, laundry and drinking water
SanDisk Confidential 6
SDSS Water Reuse Map ‐ 1
Domestic recycled water: 120 ton(Toilets, canteen, laundry and drinking water)
Landscaping: 120 ton
Recycled Water Usage
Process recycled water: 1530 tonDI plant recycled water: 1833 tonCondensation from air‐con: 45 ton
DI plant (raw water and RO incoming water): 3408 ton
Recycled Water Usage
Boiler recycled water: 24 ton(Condensation of steam)
Raw water of boiler: 24 ton
Recycled Water Usage
SanDisk Confidential 7
SDSSS Water Reuse Map ‐ 2
Water reclamation chart
Detail
Process recycled water: 510 tonDI plant recycled water: 481 ton
Cooling tower: 991 ton Sprinkler of N2 vaporizer: 757 ton
Recycled Water Usage 1 Usage 22nd
Recycled
Cooling water of vacuum for Backgrind & Package saw : 660 ton
Raw water of DI plant: 660 ton
DI plant recycled water: 660 ton
Recycled Water Usage 1 Usage 22nd
Recycled
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Total water usage of 7156 ton/day. Total effective water recycled of 5960 ton/day (83.3%).Annual water tonnage savings of 2,175K ton
Equal to 7.25K families’ annual water consumption.Annual water $ savings of $1.84M.
SDSS Water Recycling Deliverables
`
SanDisk Confidential
SDSS Annual Water Recycled Trend
9
24.3%
35.2%
65.1%
83.3%
2012 2013 2014 2015
539778
1437
1840
Annual water saving (K$)Water reclamation %
SanDisk Confidential
SDSS Water Recycling Journey
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DI reverse Osmosis reject water recycling
DI EDI & 2nd RO reject water recycling
Boiler condensed water recycling
W/S, P/S waste water recycling
B/G waste water recycling
W/S, P/S, SMT, B/A waste water recycling
Water repeated usage from cooling tower, VAC cooling water & treated P2 sewage recycling
RO rinse water & carbon filter forward washing reject recycling
Phase I DI RO recycling
Air‐con condensed water recycling
UF4 to recycle UF backwash reject and W/S P/S waste water
Phase 2 B/G waste water recycling
24.3%
10.9%
29.8%
18.3%
2012 2013 2014 2015
1739780
2135
1306
Reclaimed Water(Ton/day)Reclamation Ratio %
Total recycled 5960 (ton/day), 83.3%
SanDisk Confidential
Backup
11
SanDisk Confidential
Thermo Reclamation System Summary
0
200000
400000
600000
800000
1000000
1200000
2012 2013 2014 2015
Gas Yearly Saving(m3)
Cost Yearly Saving($)
Expon. (Gas YearlySaving (m3))
Expon. (Cost YearlySaving ($))
Date ProjectReclaimed Thermo(kw)
Reclaim Ratio Purpose
2012 PI Air compressor thermo reclamation 1600 16.46%
DI raw water heating & environmentcontrol.
2013 PII air compressor thermo reclamation 1365 14.04%
DI raw water heating & environmentcontrol.
2014 Thermo from reclaimed water 1457 14.99% Reduce DI raw
water heating.
2015 Boiler exhausted thermo reclamation 528 5.43% Boiler softened
water heating
Total 4950 50.92%
50.92%.905.9 Km3,
2.52K594K$.
‐ Thermo source at air compressors which are exchanged by the thermoreclamation sets.
‐ Reclaimed thermo to heat DI raw water, air‐con hot water and process hot DI.
‐ Thermo source at boilers’ exhaust which are exchanged by thermo reclamation sets.
‐ Reclaimed thermo to heat boiler softened raw water.
SanDisk Confidential
LED Lighting Utilization & Lighting Management System
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Date ProjectMonthly
Power saving(kwh)
Purpose
2011LED lighting replacement in Building I
122538Replace all the lightingswith LED lighting in building I
2012 LED lighting utilizationin Building II 91952 Utilize LED lighting in
Building II
2013 Lighting managementsystem in office area 115729 Turn on/off lighting and
air‐con automatically
2014 Lighting management system in clean room 105030 Turn on/off lighting
automatically
Total 435249
5.22 million kWH, 4.35 K
546K$.
Before: T8 (40/62W) After: T8 (12/28W)
Before: Street lighting (250W) After: Street LED lighting (120W)
Occupied sensor and controller of lighting management system to turn on/off lighting and air‐con automatically.
0100000200000300000400000500000
2011 2012 2013 2014
Monthly power saving byLight management system(kWH)
Monthly power saving byLED (kWH)