Research libraryWater, Dye and Energy per Unit
Chapter 09 of 14 · Part II · Draft web edition
A garment plant may avoid a dyehouse on site, but it still needs a per-piece account for machines, utilities, washing and every unit that fails first time.
The cloth is woven from this chapter's 5 exhibits: each weft is one exhibit's own data, normalised; each warp group is a section. The probe reads the exhibit's own value where it crosses. Procedural visualisation, not a measurement.
Read-out
Each bar shows a distinct published range from its respective source: DOE compressed-air system electricity savings (20 to 50 percent, S28), Bangladesh T-shirt machinery energy saving potential (22 to 70 percent, S30), Bangladesh steam-sector electric generator saving potential (single point 25 percent represented at low=mid=high, S30), and developed-country energy share of total production cost (5 to 10 percent, contrasted with higher shares in developing countries, S0902). Not additive and not a GFT forecast.
Unit: percent reported range in source context. Status: sourced. Sources: S28, S30, S0902.
Overture · 1 min
A garment factory controls its resource intensity only when electricity, steam, compressed air and wet-finishing water are metered against accepted pieces rather than gross bundle counts.[S24][S30] Because textile wet processing accounts for approximately 60 to 90 percent of total water used in textile manufacturing, audits often treat cut-make-trim plants as minor footnotes.[S03] That assumption fails on the factory floor for three reasons. First, garment assembly and pressing require continuous electrical power, steam and compressed air whose cost share in developing-country plants often exceeds the 5 to 10 percent of production cost reported in developed economies.[S30][S0902] Second, garment lines that include denim or piece washing reintroduce dyehouse-scale water, chemical and drying loads inside the apparel boundary.[S07] Third, sewing defects, stain removal, re-pressing and rejected garments consume machine time, steam and baseload utilities without adding a saleable unit to the denominator.[S37] In GFT's Cameroon textile programme, prepared 31 January 2024 with source-refresh notes retained in 2026, the core concept centres on cut, make, trim and finishing linked to partnered upstream mills.[R06][R07] For that model to substantiate any efficiency claim, the garment floor must maintain its own batch and line ledger from the first shift, separating owned assembly utilities from wet finishing and penalising rework inside the per-piece score.[S18][S24]
9.1
Read-out · sourced
Values come from a single gate-to-gate Bangladesh T-shirt manufacturing study (published 2024-12-03). They demonstrate per-piece accounting across gas, oil and electricity, not a transferable baseline for Cameroon or GFT.
Unit: reported case metrics (Bangladesh T-shirt plant, 2024). Status: sourced. Sources: S30.
Establishing a garment resource ledger begins by defining a gate-to-gate boundary starting at fabric-roll receipt in the cutting room and ending when inspected, pressed and packed garments pass final quality release.[S24][S30] Within this envelope, the primary denominator is the accepted garment piece, supplemented by accepted garment mass in kilograms when product mix spans light knitwear and heavy woven trousers.[S29][S30] Treating the garment factory as a distinct accounting unit aligns with the Higg Facility Environmental Module (FEM) 4.0 technical framework, which requires a facility manufacturing both finished products and fabric on the same site to track and report energy and water consumption separately.[S24] Separate tracking prevents a low-water sewing hall from diluting the apparent intensity of an adjacent dyehouse, and prevents upstream fabric losses from obscuring electricity or steam waste inside the garment plant.[S01][S24]
…Higg Facility Environmental Module (FEM) 4.0 technical framework
S24
Empirical literature confirms that gate-to-gate garment energy intensity can be quantified per piece when all fuel and electricity carriers entering the apparel boundary are converted to a common thermal unit.[S29][S30] An investigation of readymade garment (T-shirt) manufacturing in Bangladesh published in December 2024 evaluated gate-to-gate production stages and documented daily factory consumption of 15,105 cubic metres of natural gas, 49.93 kilograms of oil and 36,265 kilowatt hours of electricity.[S30] Across the studied output, those energy carriers yielded a specific energy consumption of 12 megajoules per piece (3.33 kilowatt hours of primary and secondary energy per garment) and daily carbon dioxide emissions of 56.65 tonnes.[S30] At the unit level, the study recorded specific emissions of 0.94 kilograms of carbon dioxide, 1.69 grams of carbon monoxide, 3.53 grams of methane, 4.1 grams of nitrogen oxides and 0.89 grams of sulphur oxides per piece.[S30]
The lesson from Exhibit 38 is methodological rather than numerical.[S30] A figure of 12 megajoules per T-shirt proves that an apparel plant can reconcile natural gas for boilers, oil for standby generators and grid electricity for sewing lines into one unit denominator.[S29][S30] However, importing 12 megajoules as a design coefficient or forecast for a Cameroonian factory would violate data integrity.[S23][S30] Textile Exchange guidance stresses that life-cycle metrics should be used only when underlying assumptions, boundaries and operating contexts match the decision.[S23] The Bangladesh case reflects a specific factory scale, fuel mix, boiler efficiency and knit T-shirt construction observed during its study window.[S30]
A figure of 12 megajoules per T-shirt proves that an apparel plant can reconcile…
S29, S30
When GFT designs the performance-management system for its Cameroon programme, Exhibit 38 serves as a structural template for commissioning the site ledger rather than a borrowed target.[S18][S30] A Cameroonian plant faces a different ambient temperature and humidity profile in Douala or Garoua, a different balance between grid power and backup diesel generation, and a product mix combining woven workwear, uniforms and casualwear.[R06][S25] Under GHG Protocol Scope 2 rules, purchased electricity emissions depend on the local grid or contractual instruments, whereas on-site fuel combustion for steam or standby power enters Scope 1.[S19] Physical megajoules per accepted piece also vary with seam length, stitch density, fabric weight, pressing specification and batch size.[S29][S30] GFT therefore requires each garment line to build its own metered baseline by product family before setting reduction targets.[S18][S29]
9.4
Exhibit 396 paragraphs step it
Read-out
| Cutting and spreading | Distribution board feeding spreaders, straight/automatic cutters and vacuum tables | kWh | Cut-bundle standard allowed minutes or cut fabric mass (kg) | Vacuum table idle run-time and marker utilisation |
|---|---|---|---|---|
| Sewing assembly lines | Line-level electrical submeter per modular or progressive sewing line | kWh | Direct attribution to line style batch and accepted pieces | Servo motor standby draw, machine utilisation and rework time |
| Steam generation | Fuel flowmeter, feedwater meter, boiler electricity and header steam meter | MJ fuel, m3 water, kg steam | Metered steam flow to pressing vs garment washing headers | Boiler efficiency, flue-gas temperature and blowdown rate |
| Pressing and ironing | Branch steam flowmeter and electrical submeter for vacuum/heated bucks | kg steam, kWh | Pressed accepted pieces weighted by style pressing time | Steam trap leakage, header insulation and re-pressing rate |
| Compressed air | Compressor package kWh meter, main header flowmeter and pressure transducer | kWh, Nm3 air | Active pneumatic machine hours and leak-adjusted line share | Header pressure (bar), off-shift leak flow and nozzle purge control |
| HVAC and ventilation | Chiller, evaporative cooler and exhaust-fan electrical submeters | kWh | Floor area and shift operating hours per production hall | Wet-bulb setpoint, filter pressure drop and shift scheduling |
| Task and hall lighting | Lighting circuit submeters by production bay and inspection zone | kWh | Active shift hours per bay divided by accepted pieces | Lux level at needle/inspection table and occupancy switching |
| Wet garment finishing | Dedicated water meter, steam branch, chemical log and dryer energy meter | litres, kWh, kg steam, g chemicals | Direct attribution to wet-finished lots and accepted washed pieces | Liquor ratio, bath sequence, extraction moisture and wash RFT |
Derived by combining Higg FEM 4.0 separate tracking rules (S24), DOE compressed-air audit boundaries (S28), garment end-use disaggregation in S30 and garment steam-system loss boundaries in S0901.
Unit: submetering specification by garment end use. Status: derived. Sources: S24, S28, S30, S0901.
Relying on a single main utility bill at the factory gate leaves engineers unable to tell whether a monthly spike in kilowatt hours per piece came from overtime sewing, leaking steam traps, chiller staging or unscheduled rework.[S18][S24] ISO 50001:2018 requires an organisation to identify significant energy uses, determine the variables governing them, and establish energy performance indicators tracked over time.[S18] In a garment plant, meeting that standard requires disaggregating the main electrical incomer and fuel supply into end-use submeters separating conversion machinery from shared building utilities.[S24][S30]
The Bangladesh T-shirt study separated machinery, steam generation and air-compressor sections to evaluate where energy and emissions concentrate and where upgrades yield measurable savings.[S30] That breakdown showed that steam generation produced the highest carbon dioxide emissions in the facility, while the compressor section produced the lowest direct share of emissions, and machinery upgrades offered an energy-saving potential of 22 to 70 percent within the machinery section.[S30] In an Ethiopian energy audit of the MAA garment and textile plant in Mekelle, researchers similarly disaggregated boilers, thermic fluid heaters, air compressors and lighting, identifying 15 conservation measures with an estimated annual saving potential of around US$214,600 against nearly US$98,300 of investment, a 7-month payback in that facility.[S0902] Both studies confirm that actionable conservation begins when end uses are measured separately rather than pooled into overhead.[S30][S0902]
For GFT's garment-floor ledger, Exhibit 39 defines the submetering hierarchy across eight zones: cutting and spreading, sewing lines, steam generation, pressing tables, compressed air, Heating, Ventilation, and Air Conditioning (HVAC), lighting, and wet garment finishing.[S24][S28][S30] Each zone requires an explicit physical unit, a metered boundary and a defined allocation driver.[S24][S29]
While sewing machines dominate floor space, thermal demand in pressing, finishing and washing frequently dominates the energy and carbon ledger.[S30][S0901] In the 2024 Bangladesh T-shirt study, the authors identified a 25 percent energy-saving potential in steam generation by employing an electric steam generator.[S30] Whether an electric steam generator reduces emissions or cost in Cameroon, however, depends on the grid emissions factor, power reliability and tariff structure relative to combustion fuels, evaluated under Scope 2 rules and site conditions.[S19][S25]
Even before changing the heat source, garment steam systems suffer large thermal losses between boiler burner and pressing buck.[S17][S0901] A study of 15 garment and textile factories in Bangladesh published in 2021 found that average steam generation efficiency was 76 percent, and identified ironing alongside dyeing as the most heat-intensive processes.[S0901] Maximum generation heat loss occurred through dry flue gas at the stack, while in distribution most heat was lost through steam lines and in-process leaks.[S0901] Daily, 694 gigajoules of heat passed away through the studied steam systems, causing 13 tonnes of fuel wastage and 31 tonnes of greenhouse-gas emissions per day, while thermodynamic optimisation could raise efficiency by almost 3.0 percentage points.[S0901]
The U.S. Department of Energy process-heating sourcebook and steam tip sheet confirm that a systems review must inspect the thermal chain from burner to end use before sizing replacement equipment.[S17][S27] On a garment floor, failed steam traps, bare headers above sewing bays and unreturned condensate waste fuel and water while rejecting heat into the workroom, raising HVAC cooling loads.[S01][S17][S0901] Submetering feedwater, fuel and branch steam flow lets utilities engineers track evaporation ratios daily and isolate distribution leaks during shift breaks.[S18][S0901]
9.7
Compressed air powers thread trimmers, presser-foot lifters, pocket welters, buttonholers, spreading clamps and cleaning nozzles across garment lines.[S28][S30] Because compressed air is clean and convenient at the needle point, supervisors often treat it as free once the compressor is installed.[S28] In energy terms, however, compressed air is typically the most expensive motive utility in a plant because most electrical input converts into waste heat at the compressor and aftercooler rather than mechanical work at the actuator.[S28]
The U.S. Department of Energy sourcebook reports that energy savings from compressed-air system improvements can range from 20 to 50 percent or more of electricity consumption in applicable systems.[S28] As Exhibit 40 illustrates alongside other published garment conservation ranges, a 20 to 50 percent saving potential is an investigation range, not an automatic deduction claimed without measurements.[S28][S30] Realising any portion of that range requires treating the compressor room, dryer, receiver, piping ring main, filter-regulators and sewing solenoids as one system.[S28]
…system improvements can range from 20 to 50 percent or more of electricity consumption…
S28
What Exhibit 40 cannot establish is how much electricity a Cameroonian plant will save before its baseline equipment is metered.[S28][S30] If a newly built facility installs direct-drive servo sewing machines with electric thread trimmers and lifters instead of pneumatic actuators, its baseline air demand will already be low, shifting focus toward cutting-room vacuum tables and finishing presses.[S28][S30] Conversely, if a plant operates pneumatic overlockers, pocket setters and manual lint-blowing guns, unmanaged air leaks and excessive header pressure can make the compressor package one of the largest continuous electrical loads on site.[S28][S0902]
Three operational faults account for most avoidable compressed-air electricity on a garment floor: leakage across quick-connect couplings and polyurethane tubing under sewing tables, artificial demand from running headers at 7 or 8 bar (illustrative header pressure) when solenoids require only 4.5 to 5.5 bar (illustrative actuator requirement), and open-ended hoses used to blow lint off garments.[S28] Every extra bar of discharge pressure raises compressor power while forcing more air through existing leaks.[S28]
…demand from running headers at 7 or 8 bar (illustrative header pressure) when solenoids…
S28 · illustrative
Garment-floor compressed-air and drive audit protocol
Q_leak, normal cubic metres per hour) and compressor draw (P_leak, kilowatts) required to hold operating pressure, computing Q_leak / Q_avg_shift.[S28]Q_leak before evaluating compressor upgrades.[S28]Delta_P) between receiver and the farthest pneumatic station during peak assembly; replace undersized hoses if Delta_P exceeds 0.3 to 0.5 bar (illustrative threshold), then step down discharge pressure in 0.2 bar increments while verifying error-free thread trimming.[S28]Applying this method ensures that capital proposals for variable-speed compressors or automated heads are judged against a leak-repaired baseline.[S18][S28] It also protects product quality: oil or moisture carryover from poorly maintained air dryers stains garments at the needle point, triggering solvent spotting or re-washing.[S28][S37]
9.10
Initial shift conversion load
Initial shift conversion load: total 520. Running total 520 illustrative shift load (kWh equivalent) · illustrative
In wet dyeing, right-first-time processing is recognised as a primary resource lever because re-dyeing a faulty batch consumes extra water, steam and chemicals.
Shared hall and air baseload
Shared hall and air baseload: adds 280. Running total 800 illustrative shift load (kWh equivalent) · illustrative
Gross shift energy (1,000 pcs)
Gross shift energy (1,000 pcs): total 800. Running total 800 illustrative shift load (kWh equivalent) · illustrative
Repair sewing and spotting
Repair sewing and spotting: adds 30. Running total 830 illustrative shift load (kWh equivalent) · illustrative
Re-pressing steam and vacuum
Re-pressing steam and vacuum: adds 45. Running total 875 illustrative shift load (kWh equivalent) · illustrative
Total metered load (960 accepted)
Total metered load (960 accepted): total 875. Running total 875 illustrative shift load (kWh equivalent) · illustrative
The method behind it: Worked example.
Illustrative shift energy reconciliation constructed to demonstrate the accounting method. Assumes a 1,000-piece shift bundle input, 800 kWh base conversion and utility load, 75 kWh extra repair-loop and re-pressing energy for 120 reworked pieces, and 40 permanently rejected pieces (960 net accepted pieces). Not a measured GFT result.
Unit: illustrative shift load (kWh equivalent). Status: illustrative. Illustrative figures are teaching examples, not measured factory results.
9.10 · the bodyExhibit 41 above; its figures are illustrative where marked.
In wet dyeing, right-first-time processing is recognised as a primary resource lever because re-dyeing a faulty batch consumes extra water, steam and chemicals.[S37] The same law governs the garment assembly floor, even though factory accounting rarely records it.[S24][S37] When a garment fails inline or end-of-line inspection because of skipped stitches, puckered seams, asymmetric collars, broken needles, oil spots or scorching at the pressing buck, the piece enters a rework loop or is scrapped.[R29][S37]
Consider what happens physically when a sewn garment is routed to repair or rejected at final audit.[S37] First, every watt-hour of cutting vacuum, sewing electricity, task lighting, ventilation and compressed air already expended on that garment remains locked in the metered numerator.[S24][S30] Second, unpicking seams, re-sewing panels, spotting stains with solvents or steam guns, and re-pressing the repaired garment consume additional electricity, steam and compressed air.[S30][S0901] Third, if the garment is permanently rejected as scrap, the accepted-output denominator does not advance; the accepted pieces in that shift must carry the utility burden of the failed unit.[S29][S37]
This mechanism connects upstream fabric inspection and inline needle quality directly to energy and water intensity per piece.[R29][S37] In GFT's shared evidence base, manual fabric defect inspection is reported as 60 to 70 percent accurate, missing 20 to 30 percent of defects, whereas computer-vision inspection achieves above 90 percent accuracy across more than 40 defect types at speeds up to 60 metres a minute.[R29] When undetected fabric slubs, shade bars or holes pass through cutting into sewing bundles, operators sew defective panels that are rejected only at final inspection, wasting both fabric and assembly utilities.[R29][S37] Catching fabric faults before spreading and catching stitch defects at the needle therefore act as direct resource controls.[R29][S37]
If a garment factory divides monthly electricity and steam bills by gross pieces sewn (counting a repaired garment twice or including rejected pieces in output), specific energy consumption is artificially deflated.[S29][S37] As shown in Exhibit 41, reconciling the energy ledger from gross output to net accepted output after rework exposes the utility penalty of quality failure.[S29][S37]
The waterfall in Exhibit 41 shows why gross ratios mislead managers.[S29][S37] Dividing 800 kilowatt hours of initial conversion and hall baseload by 1,000 gross bundles suggests an illustrative intensity of 0.80 kilowatt hours per piece. Once 75 kilowatt hours of repair sewing, stain spotting and re-pressing steam are added to the numerator and 40 scrapped garments are removed from the denominator, the 875 kilowatt hours spread across 960 accepted garments yield 0.911 kilowatt hours per accepted piece, an illustrative penalty of nearly 14 percent above the naive figure.
Dividing 800 kilowatt hours of initial conversion and hall baseload by 1,000 gross bundles…
illustrative
Interlude · the cloth half-woven
Woven: sections 9.0 to 9.10Still to weave: 9.13 to 9.19
Read-out
Inherited sector context, not GFT output. Original publication dates were not recorded. The 2030 figure is a national target, not achieved production; the baseline is not a current verification.
Unit: percent of cotton fibre. Status: sourced. Sources: R06, R07.
Read this exhibit in its chapter ↗9.13
Related · chapter 115 paragraphs step it
Read-out
Assume fuel factor 0.20 kg CO2e/kWh fuel and electricity factor 0.50 kg CO2e/kWh electricity. These are invented sensitivity inputs, not Cameroon factors. Boiler efficiency 0.80 gives fuel 375 kW and emissions 0.25 kg/kWh useful; electric boiler efficiency 0.95 gives power 315.79 kW and emissions 0.5263; heat-pump COP 3 gives power 100 kW and emissions 0.1667. Auxiliaries, upstream burdens, refrigerants and embodied impacts excluded throughout. X-axis measures incremental heating electricity only, not whole-site load.
Unit: illustrative operating comparison at 300 kW useful heat. Status: illustrative. Illustrative figures are teaching examples, not measured factory results.
Read this exhibit in its chapter ↗Unlike a batch dyeing machine whose water fill scales with load, a garment hall carries a fixed energy baseload whenever the building is open.[S18][S29] General lighting, air-handling fans, cooling loops, cutting-room dust extraction, boiler radiation losses and compressed-air leakage draw kilowatt hours and fuel even when sewing needles stop.[S28][S29][S0901]
Benchmarking research across textile companies demonstrates that specific energy consumption (SEC, energy per unit produced) varies strongly with throughput because fixed facility energy is diluted across more units at high utilisation and concentrated across fewer units during stoppages.[S29] If shift energy follows E_shift = E_fixed + e_var * N_acc (illustrative equation, where E_fixed is shift baseload, e_var is variable energy per garment, and N_acc is accepted pieces), then SEC = (E_fixed / N_acc) + e_var.[S29] Whenever stoppages, late bundles, breakdowns or unbalanced workstations reduce N_acc, the fixed term E_fixed / N_acc rises sharply.[S18][S29]
In Cameroon, historical evidence from the incumbent sector underscores why utilisation and power continuity are primary efficiency variables.[R12][S25] According to a July 2023 report in GFT's evidence register, CICAM's capacity utilisation stood at 33.7 percent at Garoua, 48.9 percent at CICAM 1 and 10.83 percent at CICAM 2, with underutilisation costing about CFAF 2 billion in 2020.[R12] Those figures describe a third-party enterprise and are not a forecast for GFT, but they illustrate a vital rule: a factory running at 33.7 or 48.9 percent of capacity cannot achieve competitive unit energy intensity if its boilers, compressors and hall utilities remain energised for full shifts.[R12][S29]
Because fixed baseload couples throughput to unit intensity, engineers should review specific energy consumption alongside Overall Equipment Effectiveness (OEE) and line balance efficiency.[S18][S29] When a sewing line suffers a bottleneck at collar attachment or sleeve setting, downstream operators and pressing tables wait in standby while lighting, HVAC, vacuum blowers and steam headers consume energy.[S29][S0901] Balancing workstation cycle times, staging pre-cut bundles before shift start, and grouping pressing into continuous campaigns allow the plant to shut down boiler branches and compressor zones when not under full load.[S18][S28][S0901]
9.16
Read-out · sourced
Sourced to UNIDO's 2018-03-22 report on New Amico in Tunisia (S07). The 13 litres per piece figure is a project-specific reduction associated with three E-flow machines on denim jeans, not a sector baseline or a guaranteed saving for GFT.
Unit: UNIDO project record (Tunisia jeans case, 2018). Status: sourced. Sources: S07.
A garment factory performing only dry cut, make, trim and steam pressing uses freshwater primarily for boiler make-up, evaporative cooling, spot cleaning and sanitation.[S01][S24] As soon as the product requires garment washing, piece dyeing, enzyme bio-polishing, stone washing, bleaching or denim finishing, the plant crosses into the wet-processing boundary.[S02][S07] Failing to isolate wet-finished garments from dry-assembled garments corrupts both water and energy KPIs: averaging laundry water across all sewn pieces understates the intensity of washed styles while making dry styles appear water-intensive.[S24][S29]
Industrial garment washing uses rotary drum washers, hydro-extractors and tumble dryers that consume process water, chemicals, steam and drive power on every batch.[S01][S02][S07] Project evidence documented by the United Nations Industrial Development Organization (UNIDO) under the MED TEST II programme in Tunisia illustrates both the scale of garment-washing water demand and the need to separate projections from verified baselines.[S07] At New Amico, a jeans manufacturer in Tunisia, introducing two ozone-washer machines and three E-flow nano-bubble machines was projected to reduce water consumption for washing jeans by 13 litres per piece.[S07]
As Exhibit 42 highlights, a garment-washing intervention measured in double-digit litres per pair of jeans exceeds the entire freshwater intake of a dry sewing line per piece.[S07][S24] At the same time, GFT's evidence rules require discipline when reading cases like New Amico.[S07][S23] The UNIDO account states what three E-flow machines will allow that Tunisian facility to save on its jeans; it does not establish that another laundry will save 13 litres per piece, nor does it replace post-commissioning verification of water, electricity, drying heat and effluent load.[S07][S33]
it does not establish that another laundry will save 13 litres per piece
S07, S33
Wet garment finishing also creates a chemical and wastewater compliance obligation under the ZDHC Wastewater Guidelines and MRSL framework.[S32][S33] Permanganate sprays, bleaches, pumice, enzymes, brighteners and softeners discharged from washing drums enter the effluent stream alongside lint and suspended solids.[S01][S33] Every wet-finished lot must therefore carry batch records linking chemical formulation and Safety Data Sheet conformance,[S32] freshwater intake per accepted washed piece,[S07] extraction moisture, dryer thermal energy[S17] and wastewater testing.[S33]
In GFT's Cameroon model, garment styles follow three distinct finishing routes: 1. Route A (Dry cut-make-trim and steam press only): Shirts, trousers or T-shirts cut and sewn from finished fabric, pressed with steam and packed without wet washing.[S24][S30] The owned ledger tracks cutting and sewing electricity, compressed air, pressing steam, boiler make-up water and rework.[S30][S0901] 2. Route B (In-house wet garment finishing): Garments passing into an owned on-site laundry for enzyme wash, softening, dyeing or denim finishing before drying and pressing.[S07][S24] Following Higg FEM 4.0 rules, the laundry is submetered as a separate boundary so its litres, steam, dryer kilowatt hours and chemicals per washed piece are reported explicitly alongside the dry assembly score, never blended into Route A averages.[S24] 3. Route C (Outsourced wet garment finishing): Garments sewn in-house, sent to an external commission laundry for washing, and returned for packing.[S24] Claiming low owned water intensity simply because washing is subcontracted outside the fence line is a boundary shift, not an environmental improvement.[S23][S24] GFT's ledger flags Route C styles as carrying a partnered wet-finishing boundary and requires batch water, energy, chemical and ZDHC effluent records from the subcontractor.[S24][S33]
9.19
Read-out
Illustrative model of a 10,000 kg cotton batch schedule with 120 L/kg first-pass water use, 90 L/kg corrective re-dye water use and stated reject shares. Direction of reprocessing penalty follows S37; values are illustrative.
Unit: illustrative L per kg. Status: illustrative. Sources: S37. Illustrative figures are teaching examples, not measured factory results.
Read this exhibit in its chapter ↗9.19 · Introduction
Collecting submeter pulses and quality logs has no operational value if numbers sit in a monthly spreadsheet viewed after utility bills are paid.
Exhibit 07, chapter 02: 98% RFT, 2% scrap
9.20 · Line-level indicators connect shift supervision to weekly utility engineering
At shift end, a line supervisor does not control grid carbon factors or boiler procurement, but directly controls bundle flow, first-pass quality, machine idle time, blow-gun misuse and steam-table shutdown during breaks.
Exhibit 07, chapter 02: 98% RFT, 2% scrap
9.21 · Normalisation and evidence status protect management decisions from false variance
Comparing a shift producing heavy cargo trousers with enzyme washing against a shift producing basic T-shirts without normalisation generates false alarms.
Exhibit 07, chapter 02: 90% RFT, 10% re-dyed
9.19 · the bodyThe film above follows these sub-steps.
Collecting submeter pulses and quality logs has no operational value if numbers sit in a monthly spreadsheet viewed after utility bills are paid.[S18] Under ISO 50001:2018, energy indicators must be integrated into operational control and reviewed at defined intervals against baselines and relevant production variables.[S18][S29] In GFT's architecture, the garment floor links daily shift supervision to weekly utility engineering through a tiered indicator cascade.[S18][S24]
N_acc) and first-pass yield (FPY, percent): Counted at the end-of-line quality gate, separating right-first-time garments from repaired units and rejects.[S37]kWh / accepted piece): Metered at the line distribution board and compared against the style baseline at the shift's utilisation level.[S29][S30]kg steam / accepted piece): Metered at the finishing branch header, flagging failed steam traps or excessive re-pressing immediately.[S30][S0901]Nm3/h or kW during break): Checked during the mid-shift break when production stops, exposing new hose or coupling leaks the day they occur.[S28]L / accepted washed piece and kWh / accepted washed piece): Tracked per laundry batch for Route B styles, paired with wash right-first-time release.[S07][S24]When any daily indicator breaches its control band, the exception escalates to the weekly utility and quality review owned by the garment-plant manager, maintenance lead and sustainability engineer.[S18] That weekly review cross-checks submeter totals against main meters, investigates whether variance stemmed from product mix, low utilisation,[R12] rework spikes[S37] or equipment degradation,[S28][S0901] and assigns corrective actions.[S18][S29]
Comparing a shift producing heavy cargo trousers with enzyme washing against a shift producing basic T-shirts without normalisation generates false alarms.[S29][S30] Following specific-energy benchmarking methods,[S29] GFT's ledger normalises line electricity and steam against standard allowed minutes (SAM), seam count or garment mass, while stratifying dry styles (Route A) separately from wet-finished styles (Route B and Route C).[S24][S29] Every dashboard tile also carries an explicit evidence status tag (measured, derived, estimated or illustrative) under LCA data integrity rules,[S23] ensuring that ramp-up estimates are never confused with verified meter observations.[S18][S23]
By binding electricity, steam, compressed air, wet washing and rework into a single per-piece accounting system, the garment plant closes the final process loop of Part II.[S24][S30] Part III turns from individual process boundaries to plant-wide reduction systems, beginning with how water treatment and reuse must match recycled water quality to the exact duty of the next production bath.[S06]
Check the record
Every knot is a source this chapter cites; select one to read its record, or filter the register by grade. Publication dates and inherited-source limits stay explicit. Read the paper's full evidence summary.
24 sources · 270 citation marks on this pageMost cited: S30, 37 times
Grade AGrade BGrade CKnot size: citations on this page
All 24 records shown
R06 · Grade C · inherited record
Inherited evidence R06
About 95 percent of cotton fibre exported raw against 5 percent processed locally; industrialisation target of 50 percent local processing.
Publication date unrecorded. Inherited source-text record. The original publication has not been independently reopened for this web edition.
R07 · Grade C · inherited record
Inherited evidence R07
SND30 restates the 50 percent local-processing target by 2030.
Publication date unrecorded. Inherited source-text record. The original publication has not been independently reopened for this web edition.
R12 · Grade C · inherited record
Inherited evidence R12
CICAM capacity utilisation, July 2023 report: Garoua 33.7 percent, CICAM 1 48.9 percent, CICAM 2 10.83 percent; underutilisation cost about CFAF 2 billion in 2020.
Publication date unrecorded. Inherited source-text record. The original publication has not been independently reopened for this web edition.
R29 · Grade C · inherited record
Inherited evidence R29
Manual defect inspection 60 to 70 percent accurate, missing 20 to 30 percent of defects; computer vision above 90 percent across more than 40 defect types; line-scan inspection up to 60 metres a minute.
Publication date unrecorded. Inherited source-text record. The original publication has not been independently reopened for this web edition.
c09-S01 · Grade A
Environmental, Health, and Safety Guidelines for Textile Manufacturing
Water consumption in textile manufacturing has a significant environmental impact, in terms of freshwater needs, wastewater/sludge production, and energy used in heating.
2007-04-30. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c09-S02 · Grade A
Best Available Techniques (BAT) Reference Document for the Textiles Industry
Important issues for the implementation of Directive 2010/75/EU in the textiles (TXT) sector are emissions to water and air, use and handling of chemicals as well as energy consumption.
2023. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c09-S03 · Grade B
Textile production water use and textile wastewaters: Literature Review
Textile wet processes consume approximately 60 to 90 % of the total water used in textile processes.
2024-04-16. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c09-S06 · Grade B
Textile Wastewater Treatment for Water Reuse: A Case Study
The reuse rate of recycled water in the whole system was 86.8%, higher than that during forward osmosis (FO)-RO system by 31.8% [49].
2019-01-11. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c09-S07 · Grade A
Reducing industrial water consumption in Tunisia
Specifically, the use of the three E-flow machines will allow New Amico to reduce water consumption for washing jeans by 13 litres per piece.
2018-03-22. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c09-S17 · Grade A
Improving Process Heating System Performance: A Sourcebook for Industry, Third Edition
A systems approach provides a tops-down review of the entire process and how the individual components perform and interact with each other.
2015. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c09-S18 · Grade A
ISO 50001:2018 Energy management systems: Requirements with guidance for use
ISO 50001:2018 is an international standard that provides a framework for establishing, implementing, maintaining, and improving an Energy Management System (EnMS).
2018. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c09-S19 · Grade B
Scope 2 Guidance
The Scope 2 Guidance standardizes how corporations measure emissions from purchased or acquired electricity, steam, heat and cooling (called “scope 2 emissions”).
2015. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c09-S23 · Grade B
Ensuring Integrity in the Use of Life Cycle Assessment Data
Ensuring Integrity in the Use of Life Cycle Assessment Data includes a call for industry-wide integrity in the use of LCA data, with key recommendations, such as only using LCA data when there is a full understanding of the key assumptions, methods, and use cases.
2025-08-07. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c09-S24 · Grade B
Higg Facility Environmental Module (FEM) 4.0 Technical Paper
This means a facility that manufactures final finished products and fabric in the same facility will need to track and report their energy and water consumption data separately.
2022. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c09-S25 · Grade A
Cameroon Power Sector Reform Program (P178136): Implementation Status and Results Report
The Cameroon Power Sector Reform Program was approved by the World Bank in August 2023.
2025-06-25. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c09-S27 · Grade A
Use Feedwater Economizers for Waste Heat Recovery, Steam Tip Sheet 3
By recovering waste heat, an economizer can often reduce fuel requirements by 5% to 10% and pay for itself in less than 2 years.
2012. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c09-S28 · Grade A
Improving Compressed Air System Performance: A Sourcebook for Industry
Energy savings from system improvements can range from 20 to 50 percent or more of electricity consumption.
2003. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c09-S29 · Grade B
Energy Efficiency Benchmark in Textile Manufacturing Companies
Specific energy consumption (SEC) is a widely used indicator of energy consumption per unit produced [2].
2021-06-28. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c09-S30 · Grade B
Investigation of the energy consumption and emission for a readymade garment production and assessment of the saving potential
The specific energy consumption found is 12 MJ/piece and the specific emissions of the CO2, CO, CH4, NOx, and SOx are 0.94 kg/piece, 1.69 gm/piece, 3.53 gm/piece, 4.1 gm/piece, and 0.89gm/piece, respectively.
2024-12-03. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c09-S32 · Grade B
ZDHC MRSL V3.1 and Conformance Guidance V2.1: Formulator
Uploading Safety Data Sheets (SDS) for all ZDHC MRSL Conformant products is mandatory.
2023. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c09-S33 · Grade B
ZDHC Wastewater Guidelines, Version 2.2
The purpose of testing ZDHC MRSL parameters is to check for intentional use of ZDHC MRSL substances and/or high levels of respective contamination in the chemical inputs.
2024. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c09-S37 · Grade B
Right-first-time dyeing: a design of experiments approach for the optimisation of dyeing-processes using hard water
The benefits of achieving the right-first-time are very significant including for instance, reduction in water and energy consumption, reduction in effluent generation along with time and colour saving (Parton, 1994).
2019. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c09-S0901 · Grade B
Overall performance of steam system used in garment industries in Bangladesh: a case study-based approach
The average efficiency of the steam generation units used in the fifteen studied factories was found 76%.
2021-01-23. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗c09-S0902 · Grade B
Evidence-based energy conservation potentials and policy implications in the textile and garment industries of Ethiopia
Energy is one of the primary inputs in textile and garment processing industries and its cost share is reported between 5 and 10% of the total production cost in developed countries but is far higher in developing countries.
2022-08-01. Register access date: 2026-10-30. Source provenance is supplied by the paper evidence register.
Open the recorded source ↗S24 Sustainable Apparel Coalition. 2022.
S30 Springer Nature, Energy Efficiency. 2024-12-03.
S03 VTT Technical Research Centre of Finland, Telaketju. 2024-04-16.
S0902 Springer Nature, Energy Efficiency. 2022-08-01.
S07 United Nations Industrial Development Organization. 2018-03-22.
S37 Emerald Publishing Limited. 2019.
R06 Cameroon Trade Hub. Publication date unrecorded; inherited source-text check.
R07 Ecofin Agency. Publication date unrecorded; inherited source-text check.
S18 International Organization for Standardization. 2018.
S29 Sciendo, Riga Technical University, Environmental and Climate Technologies. 2021-06-28.
S01 International Finance Corporation, World Bank Group. 2007-04-30.
S23 Textile Exchange. 2025-08-07.
S25 World Bank. 2025-06-25.
S19 GHG Protocol. 2015.
S28 United States Department of Energy and Compressed Air Challenge. 2003.
S0901 Springer Nature, Energy Efficiency. 2021-01-23.
S17 United States Department of Energy and Industrial Heating Equipment Association. 2015.
S27 United States Department of Energy, Advanced Manufacturing Office. 2012.
R29 MDPI; industry inspection literature. Publication date unrecorded; inherited source-text check.
R12 Business in Cameroon. Publication date unrecorded; inherited source-text check.
S02 European Commission Joint Research Centre. 2023.
S33 ZDHC Foundation. 2024.
S32 ZDHC Foundation. 2023.
S06 MDPI, Processes. 2019-01-11.
Keep the thread · chapter 09 of 14
Move the shuttle along the rack to preview any chapter: its sections, exhibits and reading time. Draft web edition. This research is not investment, legal or tax advice; illustrative models are not measured factory results.
The paper's rack · 14 boltsBolt length: reading time
01Part I: Define the unit before reducing it
Adding value inside Cameroon requires an explicit account of the water, chemistry and energy associated with accepted production, including the work bought from suppliers.
02Part I: Define the unit before reducing it
A per-unit ratio is meaningful only when output, quality release, product mix and allocation rules remain visible beside it.
03Part I: Define the unit before reducing it
Volumetric accounting becomes decision-ready only when source, catchment, season, quality and discharge are attached to each litre.
04Part I: Define the unit before reducing it
A shade is resource-efficient only when its accepted result includes the chemistry, washing, corrections and discharge needed to produce it.
05Part II: The process sets the floor
Uneven or incomplete preparation propagates extra water, heat and correction through every later stage.
06Part II: The process sets the floor
A smaller nominal bath is an engineering opportunity whose real value depends on levelness, fixation, rinsing, throughput and reprocessing.
07Part II: The process sets the floor
The correct rinse is the minimum flow that reaches the specified residual-chemistry endpoint with acceptable colour and fabric quality.
08Part II: The process sets the floor
Removing liquid before evaporation can reduce the drying duty, provided that fabric quality, finish chemistry and accepted output remain inside the test.
09Part II: The process sets the floor
A garment plant may avoid a dyehouse on site, but it still needs a per-piece account for machines, utilities, washing and every unit that fails first time.
10Part III: Reduction is a system
A reuse system is a production process with its own energy, chemistry, losses and quality release, not a free source of water.
11Part III: Reduction is a system
A recovery or electrification project earns its place only when a measured source can serve a measured sink at the required time, temperature and emissions factor.
12Part III: Reduction is a system
A resource project is ready for capital only when its baseline, production effect and whole-cycle savings are measured with enough confidence to survive operating variance.
13Part IV: GFT's measurement and reduction system
Resource data becomes useful when it carries the identity of the fabric, recipe, machine and quality decision that produced it.
14Part IV: GFT’s measurement and reduction system
GFT recommends a sequence of evidence gates, from a signed measurement contract to repeated operating proof, with scale conditional on resource, quality and environmental performance.