{"id":1431,"date":"2026-05-22T20:19:36","date_gmt":"2026-05-22T12:19:36","guid":{"rendered":"https:\/\/potatochipsproductionline.com\/?p=1431"},"modified":"2026-05-22T20:22:48","modified_gmt":"2026-05-22T12:22:48","slug":"cassava-chips-processing-line-turnkey-project-in-indonesia","status":"publish","type":"post","link":"https:\/\/potatochipsproductionline.com\/uz\/cassava-chips-processing-line-turnkey-project-in-indonesia\/","title":{"rendered":"Cassava Chips Processing Line Turnkey Project in Indonesia"},"content":{"rendered":"

Building a Keripik Singkong Factory from Empty Land in Lampung<\/h2>\n\n\n
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Project Snapshot<\/h2>\n\n\n\n

This was our first true turnkey<\/strong> cassava project in Sumatra \u2014 meaning we did not just ship equipment, we delivered a working factory. Land survey, layout drawings, MEP design, equipment, installation, HACCP documentation support, operator hiring assistance, and 60-day production hand-holding were all under one contract. Below is the project card, finalized in March 2025<\/strong> when the line passed its 30-day acceptance run.<\/p>\n\n\n\n

Element<\/th>Detail<\/th><\/tr><\/thead>
Client<\/td>An agribusiness group (4 founding partners, Bu Ratna as managing director) based in Bandar Lampung, Lampung Province<\/strong><\/td><\/tr>
Product<\/td>Keripik singkong<\/em> \u2014 sliced cassava chips, salted and bumbu balado<\/em> flavors, 60g and 200g bags<\/td><\/tr>
Imkoniyat<\/td>500 kg\/h<\/strong> finished chips, designed for 2 shifts \u00d7 7 hours<\/td><\/tr>
Raw material<\/td>Fresh cassava (Manihot esculenta, varieties UJ-3 and Adira-4) from local petani groups in kabupaten Pesawaran and kabupaten Tanggamus<\/td><\/tr>
Project mode<\/td>Turnkey \/ EPC<\/strong> \u2014 civil + utilities + equipment + commissioning + 60-day production support<\/td><\/tr>
Quvvatlantirish manbai<\/td>380V \/ 3-phase \/ 50Hz, dedicated PLN connection 197 kVA<\/td><\/tr>
Workshop area<\/td>620 m\u00b2 production hall + 180 m\u00b2 raw material area + 95 m\u00b2 packaging warehouse<\/td><\/tr>
Total investment<\/td>USD 215,000\u2013235,000 (turnkey scope, excluding land)<\/td><\/tr>
ROI period<\/td>~17 months, based on partner-reported margin<\/td><\/tr>
Acceptance run<\/td>March 2025<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n
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\"Saudiya<\/figure>\n<\/div>\n\n
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<\/a>\n\nBepul taklif oling<\/strong><\/span>\n\n<\/div>\n<\/div><\/div>\n\n
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\n\nOling<\/strong> Batafsil<\/strong><\/span>\n\n<\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n
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Client Background & Why They Came to Us<\/h2>\n\n\n\n

Lampung produces roughly 6\u20137 million tons of cassava annually, more than any other Indonesian province. Most of it goes to tapioka<\/em> (starch) factories \u2014 but raw cassava farmgate prices have been brutal for petani over the past few years, sometimes below IDR 1,200\/kg, which barely covers harvest cost. Bu Ratna and her three partners come from cassava farming families themselves. Their idea was simple on paper: stop selling at IDR 1,200\/kg, start making keripik singkong<\/em> at IDR 38,000\/kg retail, and capture the value chain.<\/p>\n\n\n\n

What they did not have: a factory, a process, food safety experience, or any prior equipment knowledge.<\/p>\n\n\n\n

They contacted four suppliers \u2014 two from China, one from India, and one local Surabaya fabricator. Our quote was the second-most expensive. What won the contract was something specific: during the second video meeting, our application engineer Ms. Yulia walked them through the HCN (hydrogen cyanide) control protocol<\/strong> for bitter cassava, including the soaking parameters, the 2-stage washing scheme, and a sample HACCP plan. The Indian supplier had not mentioned cyanide at all. The Surabaya fabricator had mentioned it but only said “soak overnight, no problem.”<\/p>\n\n\n\n

Bu Ratna’s blunt comment during contract signing:<\/p>\n\n\n\n

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“Pak Wei, I do not know machines. I know cassava. If you understand my cassava, I trust you understand my machine.”<\/p>\n<\/blockquote>\n\n\n\n

Their three concerns going in were:<\/p>\n\n\n\n

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  1. Food safety<\/strong> \u2014 they were terrified of a cyanide incident on day 30 of operations destroying the brand before it launched.<\/li>\n\n\n\n
  2. Petani relationships<\/strong> \u2014 could the line handle the actual mixed-variety, mixed-size cassava that real Lampung farmers deliver, not the idealized samples in supplier brochures.<\/li>\n\n\n\n
  3. Speed to first revenue<\/strong> \u2014 they had borrowed against family land and needed cash flow within 6 months of signing.<\/li>\n<\/ol>\n\n<\/div>\n\n
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    Raw Material & End-Product Positioning<\/h2>\n\n\n\n

    Cassava is not potato. The differences matter for every single station of the line.<\/p>\n\n\n\n

    Fresh cassava roots from Lampung average 600\u20131,400 g per piece<\/strong>, with thick brown peel and a thin pink-purple secondary skin underneath. The flesh is harder than potato and contains naturally occurring cyanogenic glycosides (linamarin and lotaustralin), which release HCN<\/strong> when the cell walls are broken \u2014 slicing, in other words. Sweet cassava varieties typically carry 20\u201350 mg HCN\/kg fresh weight; bitter varieties can hit 200+ mg\/kg. Indonesian SNI 01-2997-1996 sets the limit for ready-to-eat cassava products at \u200b\u226410 mg HCN\/kg<\/strong>, and BPOM enforces this on packaged keripik singkong<\/em>.<\/p>\n\n\n\n

    The petani in Pesawaran and Tanggamus deliver mostly UJ-3 (sweet, ~35 mg HCN\/kg) and Adira-4 (semi-sweet, ~55 mg HCN\/kg). No bitter varieties \u2014 Bu Ratna explicitly contracted only sweet-variety farmers. But “sweet” is not zero, so we still designed the line with full HCN reduction capability.<\/p>\n\n\n\n

    End products were positioned for three channels:<\/p>\n\n\n\n

    The anchor channel<\/strong> was the local Lampung market \u2014 toko oleh-oleh<\/em> (souvenir food shops) targeting domestic tourists who come for Way Kambas elephant park and Krakatau viewpoint trips. 200g family bags at IDR 22,000 retail, bumbu balado<\/em> and original salt flavors. This channel alone was projected to absorb 40% of capacity.<\/p>\n\n\n\n

    The modern channel<\/strong> was a private-label contract with a Sumatra-region distributor supplying about 280 minimarket outlets across Lampung and South Sumatra. 60g bags, IDR 5,000 retail.<\/p>\n\n\n\n

    The export pilot channel<\/strong> \u2014 a small but symbolically important slice \u2014 was 5kg bulk bags shipped to a toko Indonesia<\/em> importer in Jeddah, serving the Indonesian diaspora and Hajj season demand. Roughly 1.5 tons\/month at the start.<\/p>\n\n\n\n

    Slice thickness target was 1.7 mm<\/strong> for the 200g traditional bags (Indonesians prefer slightly thicker, more “bite-feel” keripik singkong<\/em>) and 1.4 mm<\/strong> for the 60g modern channel.<\/p>\n\n<\/div>\n\n

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    Process Flow & Equipment Configuration<\/h2>\n\n\n\n

    The cassava line shares some DNA with a potato chips line, but four stations are fundamentally different: the two-stage peeling<\/strong>, the dedicated soaking tank for HCN reduction<\/strong>, the harder-tooth slicer<\/strong>, and the two-stage washing<\/strong> to leach residual cyanogenic compounds.<\/p>\n\n\n\n

    Equipment list (turnkey scope, simplified from the as-built BOM):\u200b<\/strong><\/p>\n\n\n\n

    #<\/th>Equipment<\/th>Model<\/th>Key spec<\/th>Quvvat<\/th><\/tr><\/thead>
    1<\/td>Cassava intake hopper + sorting belt<\/td>IH-800<\/td>800 kg buffer, 4-station sorting<\/td>1.5 kW<\/td><\/tr>
    2<\/td>Drum washer<\/td>DW-800<\/td>Inclined drum, mud removal<\/td>3 kW<\/td><\/tr>
    3<\/td>Brush peeler stage 1<\/td>BP-500<\/td>Removes brown outer peel<\/td>4 kW<\/td><\/tr>
    4<\/td>Carborundum peeler stage 2<\/td>CP-500<\/td>Removes pink secondary skin<\/td>5.5 kW<\/td><\/tr>
    5<\/td>Trimming conveyor<\/td>TC-500<\/td>4 stations, manual eye removal<\/td>1.1 kW<\/td><\/tr>
    6<\/td>Cassava slicer<\/td>SL-500C<\/td>Tungsten carbide blades, 320 rpm<\/td>4 kW<\/td><\/tr>
    7<\/td>Soaking tank<\/strong><\/td>ST-1500<\/td>1,500 L, water exchange every 90 min, food-grade citric acid dosing<\/td>1.5 kW (pump)<\/td><\/tr>
    8<\/td>Two-stage spray washer<\/td>SW-500D<\/td>Counter-flow, 1.2 m\u00b3\/min fresh water<\/td>3 kW<\/td><\/tr>
    9<\/td>Air-knife dewatering<\/td>AK-500<\/td>4 air knives, 7.5 kW blower<\/td>7.5 kW<\/td><\/tr>
    10<\/td>Continuous fryer<\/td>CF-500G<\/td>LPG-fired, oil 1,400 L, 1.6 m \u00d7 8 m<\/td>5.5 kW + LPG<\/td><\/tr>
    11<\/td>Vibration de-oiler<\/td>VD-500<\/td>Pre-removes surface oil before centrifuge<\/td>1.5 kW<\/td><\/tr>
    12<\/td>De-oiling centrifuge<\/td>DO-500<\/td>360 rpm, residual oil \u226420%<\/td>4 kW<\/td><\/tr>
    13<\/td>Single-drum seasoning<\/td>SS-500<\/td>Drum dia 800 mm, oil-spray atomizer<\/td>2.2 kW<\/td><\/tr>
    14<\/td>Multi-head weigher<\/td>MW-14H<\/td>14 heads, \u00b10.3g<\/td>1.8 kW<\/td><\/tr>
    15<\/td>VFFS bagger \u00d7 2<\/td>VFFS-380<\/td>60g + 200g lines, 45 packs\/min each<\/td>4 kW each<\/td><\/tr>
    16<\/td>Metal detector + checkweigher<\/td>MD-CW<\/td>Inline at end of packaging<\/td>0.8 kW<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    The soaking tank (#7) is the heart of the HCN control. Water in the tank is exchanged every 90 minutes via overflow, and a small dosing pump adds food-grade citric acid to keep pH at 4.0\u20134.5<\/strong> \u2014 this accelerates linamarin hydrolysis and improves color stability of the final chips. Sliced cassava sits in this tank for 80\u201395 minutes<\/strong> before moving to the two-stage spray washer. Combined with the high-temperature frying step (170\u00b0C \u00d7 3.5 minutes), our validation runs measured residual HCN at 2.1\u20134.6 mg\/kg<\/strong> in finished product, well below the SNI 10 mg\/kg limit.<\/p>\n\n\n\n

    Total connected load is about 51 kW<\/strong>; running load averages 32 kW. The PLN connection at 197 kVA leaves comfortable headroom for the second-shift expansion already planned for 2027.<\/p>\n\n\n

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    \"Cassava<\/figure>\n<\/div>\n<\/div>\n\n
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    Layout & On-site Implementation \u2014 The Turnkey Scope<\/h2>\n\n\n\n

    Because this was turnkey, our scope started long before the equipment showed up. Here is the actual timeline we ran.<\/p>\n\n\n\n

    Phase 1 \u2014 Site & Design (Aug 2024 \u2013 Oct 2024, 9 weeks)\u200b<\/strong> We assigned a Mandarin-Indonesian bilingual project engineer, Mr. Arif, to spend 11 days on-site in Bandar Lampung. He surveyed the empty 1,400 m\u00b2 plot Bu Ratna had bought in kawasan industri Tanjung Bintang, took soil-bearing tests with a local civil consultant, and produced 3D layout drawings. We worked with a local architect (PT Cipta Selaras Lampung) for IMB \/ PBG permitting because as a foreign EPC contractor we cannot stamp drawings in Indonesia.<\/p>\n\n\n\n

    Phase 2 \u2014 Civil & Utilities (Oct 2024 \u2013 Jan 2025, 14 weeks)\u200b<\/strong> Foundation, steel-frame factory shell with 6 m clear height, food-grade epoxy floor with 1.5% drainage slope toward central trench, exhaust hood and 12 m stainless stack for the fryer area, PLN 197 kVA dedicated transformer installation, deep well + 4-stage water treatment (Lampung municipal water has periodic turbidity issues we did not want to gamble on), LPG manifold for 24 \u00d7 50kg tanks. This phase was managed by our local civil partner with weekly remote oversight from our Qingdao office plus one mid-phase site visit.<\/p>\n\n\n\n

    Phase 3 \u2014 Equipment Shipment & Installation (Jan 2025 \u2013 Feb 2025, 7 weeks)\u200b<\/strong> Three 40HQ containers from Qingdao to Panjang Port (Lampung’s main port), 26 days at sea. Customs cleared in 9 working days; one container was held for a manual inspection because the soaking tank was an unusual HS code. Inland trucking 18 km to site. Installation took 17 days<\/strong> with two of our engineers (Mr. Liu and Mr. Cheng) plus four local fabricators we trained on stainless welding standards.<\/p>\n\n\n\n

    Phase 4 \u2014 Commissioning & 60-day Production Support (Feb 2025 \u2013 Apr 2025)\u200b<\/strong> Cold testing, water testing, oil testing, then 7 days of trial production with progressively larger cassava batches. Mr. Liu stayed on-site for 60 days total \u2014 significantly longer than typical equipment-only projects \u2014 running the line alongside the newly hired local production team and gradually transferring authority. By day 45 the local supervisor Pak Yusuf was running shifts independently; Mr. Liu spent his last 15 days mostly drinking kopi tubruk<\/em> and writing handover documents.<\/p>\n\n\n\n

    The biggest unexpected hassle was not technical \u2014 it was getting the IMB\/PBG building permit<\/strong>, which took 7 weeks longer than the local architect originally promised. We absorbed about USD 9,000 of extended engineer hotel and rebooked flight costs because of this. Lesson written into our standard turnkey contract afterwards: permitting delays beyond 30 days trigger a force-majeure clause shared between client and contractor.<\/p>\n\n<\/div>\n\n

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    Challenges & Solutions<\/h2>\n\n\n\n

    Challenge 1: Cassava size variability broke the peeler throughput on day 3<\/strong><\/h3>\n\n\n\n

    The brochure spec for the brush peeler assumed cassava roots in a 400\u2013900 g range. Reality from Lampung petani: deliveries contained pieces from 250 g up to 1,800 g, sometimes with significant curvature. On day 3 of trial production, the brush peeler kept jamming on oversized pieces, and small pieces were under-peeled. Throughput dropped to 320 kg\/h, far below the 500 target.<\/p>\n\n\n\n

    The fix had two parts. First, we installed a manual pre-cutting station<\/strong> before the drum washer where two operators with stainless cleavers chop pieces over 1.2 kg into halves. Yes, it is “low-tech” \u2014 it is also the right answer for this raw material reality. Second, we adjusted the brush peeler running speed by 18% (slower = more dwell time) and increased peel-pressure spring tension. Throughput recovered to 480\u2013510 kg\/h depending on the batch size distribution. The two pre-cutting operators became permanent positions at IDR 95,000\/day each \u2014 about USD 380\/month combined, which the project economics easily absorbed.<\/p>\n\n\n\n

    Challenge 2: Color drift between morning and afternoon batches<\/strong><\/h3>\n\n\n\n

    Within the first 2 weeks of production, Bu Ratna’s QA staff noticed afternoon batches were slightly darker and oilier than morning batches from the same petani delivery. Investigation traced this to the soaking tank water being changed less frequently as the day progressed (operator fatigue), so accumulated starch and sugar in the soaking water raised the Maillard browning during frying.<\/p>\n\n\n\n

    We installed a low-cost timer-controlled solenoid valve<\/strong> on the tank overflow that triggers automatic water exchange every 75 minutes regardless of operator action, plus a turbidity sensor that triggers an extra exchange if water clarity drops below threshold. Cost added: about USD 850. Color uniformity stabilized within 4 days.<\/p>\n\n\n\n

    Challenge 3: Cyanide testing logistics<\/strong><\/h3>\n\n\n\n

    Bu Ratna wanted every batch<\/strong> tested for residual HCN before release \u2014 not just the periodic sampling that BPOM technically requires. Sending samples to the BBIA lab in Bogor took 3\u20135 days, which would have killed the production schedule. The solution was to set up an in-house rapid test station<\/strong> using picrate paper test kits (semi-quantitative, accurate to \u00b12 mg\/kg) for every batch, with formal BBIA-certified lab tests done weekly on composite samples. This satisfied her risk tolerance and the actual BPOM compliance requirement simultaneously. Total monthly cost of the testing program: about IDR 2.4 million, or roughly USD 150.<\/p>\n\n\n\n

    Challenge 4: HACCP documentation push-back during BPOM registration<\/strong><\/h3>\n\n\n\n

    When Bu Ratna submitted the HACCP and BPOM-MD registration, the regional BPOM office in Bandar Lampung asked for additional documentation on the soaking tank’s CCP (critical control point) design. The HACCP plan we had drafted listed soaking as a CCP but did not include continuous water exchange data logging. We retrofitted a simple datalogger on the solenoid valve to create a 7-day rolling log, and resubmitted. Approval came through 6 weeks after that \u2014 total BPOM-MD turnaround was about 4.5 months from first submission.<\/p>\n\n<\/div>\n\n

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    Production Data & Client Validation<\/h2>\n\n\n\n

    After the 60-day support period and another 90 days of independent operation, here is what the Lampung line was actually doing as of the last quarterly report Bu Ratna shared in April 2026<\/strong>.<\/p>\n\n\n\n

    Metric<\/th>Target<\/th>Actual (12-month average)<\/th><\/tr><\/thead>
    Output capacity<\/td>500 kg\/h<\/td>478 kg\/h (95.6%)\u200b<\/strong><\/td><\/tr>
    Yield rate (raw cassava \u2192 finished chips)<\/td>31%<\/td>29.8%<\/td><\/tr>
    Residual HCN in finished product<\/td>\u226410 mg\/kg<\/td>2.1\u20134.6 mg\/kg<\/td><\/tr>
    Oil consumption<\/td>36 L\/100kg<\/td>38 L\/100kg<\/td><\/tr>
    Operators per shift<\/td>11<\/td>12<\/td><\/tr>
    LPG consumption<\/td>\u2014<\/td>0.21 kg\/kg finished<\/td><\/tr>
    Water consumption (process only)<\/td>4.5 L\/kg raw<\/td>4.8 L\/kg raw<\/td><\/tr>
    Bag rejection rate<\/td>\u22641.8%<\/td>1.4%<\/td><\/tr>
    Monthly output (single shift, 22 days)<\/td>~62 tons<\/td>58\u201364 tons<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    The 95.6% capacity achievement reflects two real factors: peel-loss variability with mixed cassava sizes (we lose 1\u20132 percentage points of yield to oversized pre-cutting), and the deliberate 12-minute oil filtration cycle every 3 hours which the original spec did not include but Bu Ratna’s QA insisted on.<\/p>\n\n\n\n

    By month 8, the export pilot to Jeddah had grown from 1.5 tons\/month to 4.2 tons\/month, and a small order for Brunei (320 kg trial shipment) had also been fulfilled. The modern channel contract had expanded from 280 outlets to 410. Bu Ratna’s most recent message:<\/p>\n\n\n\n

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    “Pak Wei, the line is OK. The petani are happy because we buy at IDR 1,650 now, not 1,200. My daughter quit her bank job in Jakarta to manage marketing. This is more than a factory.”<\/p>\n<\/blockquote>\n\n\n\n

    That kind of comment is why we like turnkey projects \u2014 even when they are operationally exhausting.<\/p>\n\n\n

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    \"\"
    Kir yuvish va tozalash mashinasi<\/strong><\/figcaption><\/figure>\n\n\n\n
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    Kesish mashinasi<\/strong><\/figcaption><\/figure>\n\n\n\n
    \"300kg\/h
    Oqartirish mashinasi<\/strong><\/figcaption><\/figure>\n\n\n\n
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    Yog'ni tozalash mashinasi<\/strong><\/figcaption><\/figure>\n\n\n\n
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    Qovurish mashinasi<\/strong><\/figcaption><\/figure>\n\n\n\n
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    Vibratsiyali yog'ni tozalash mashinasi<\/strong><\/figcaption><\/figure>\n\n\n\n
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    Havo sovutish mashinasi<\/strong><\/figcaption><\/figure>\n\n\n\n
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    Tez muzlatish mashinasi<\/strong><\/figcaption><\/figure>\n\n\n\n
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    Qadoqlash mashinasi<\/strong><\/figcaption><\/figure>\n<\/figure>\n\n<\/div>\n<\/div>\n\n
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    Investment & ROI Breakdown<\/h2>\n\n\n\n

    The full turnkey budget, broken down based on the as-built reconciliation we did with Bu Ratna’s accountant:<\/p>\n\n\n\n

    Investment side:\u200b<\/strong><\/p>\n\n\n\n