Cured ungranulated single superphosphate from purchased sulfuric acid

1. Scope and Applicability

This method covers ungranulated, unammoniated, unblended SSP made by acidulating phosphate rock with purchased virgin contact-process sulfuric acid solution, then curing, crushing and bulk dispatch. Foreground grinding, conveying, dilution, reaction/curing and abatement are electrically driven; purchased steam, fuel drying, combustion-powered handling and commercial fluorosilicic-acid recovery are absent. Verify these site conditions before applying this boundary. SSP is a mixture of monocalcium phosphate, retained calcium sulfate, residual minerals and moisture, not a pure single compound. BREF 10.2 supports sale after curing; EPA 8.5.1 identifies grinding/acidulation/curing and release points. The producer original supports purchased acid and a powder branch; its bagging step does not establish bulk delivery.

Exclude TSP, mixed sulfuric/phosphoric-acid concentrated superphosphate, partially acidulated phosphate rock (PAPR), ammoniation, micronutrient enrichment or nitrogen blends, granulation, integrated acid manufacture, bone-meal routes and field use. Collect actual operations and grade; historical yield, concentration, residence time, temperature and single-plant consumption/emissions are not defaults. ec-lvic-aaf-2007, epa-ap42-ssp-1993, epa-ap42-tsp-1993, agrophos-ssp-process.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.other-transportable-goods-except-metal-products-machinery-and-equipment.basic-chemicals.superphosphate
classification_refs	CPC 3.0 34621 Superphosphate; narrower
covered_products	Cured bulk ungranulated SSP
excluded_products	TSP; mixed-acid concentrated products; PAPR; granular, ammoniated, blended or fortified products; pure monocalcium phosphate
representative_product	SSP powder with measured moisture and grade
production_route	Purchased-acid dilution; electric rock grinding; acidulation; curing; crushing and bulk dispatch
market_state	Solid powder mixture at actual moisture; mass reference is not P2O5 nutrient mass

3. Reference Flow

Field	Value
What	Supply accepted cured SSP powder at the plant for phosphatic-fertilizer use; no field-effect equivalence asserted
How much	1 kg accepted net SSP mixture
How well	Declare moisture, total/available/water-soluble P2O5, free acidity, S/Ca, particle size, impurities and acceptance evidence for the applicable grade
How long or cycle	Plant delivery for one declared period/campaign; no assumed service life or application count
reference_flow_link	ssp

Field	Value
Reference amount	1
Reference product flow	Superphosphate 8c9749b5-e19f-4480-a575-3058aff804b3
Reference flow property	Mass 93a60a56-a3c8-11da-a746-0800200b9a66
Reference unit group	Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
Reference unit	kg
Required qualifiers	SKU; site/period; SSP not TSP; ungranulated/unammoniated/unblended; acid/rock suppliers; bulk delivery; moisture; total/available/water-soluble P2O5 and assay basis; free acidity; S/Ca; size; impurities/grade acceptance; starting condition; voltage/meter boundary and absence of combustion equipment

Declare every required qualifier in data-package metadata, process notes or reference-flow comments; omissions make that package’s reference definition incomplete.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference-mass	ssp	Mass	kg	1 kg is delivered as-is net SSP mass excluding packaging; pair moisture with dry/as-is assay basis. Do not substitute pure phosphate or nutrient mass. Use cp_product.
solution-basis	acid	Mass	kg	Input is delivered 93–98% solution mass; actual H2SO4 mass = solution mass times measured mass fraction. Carrier water is already included; added dilution water is separate.
nutrient-basis	ssp	Mass	kg	Available P2O5 mass = as-is product mass times measured available-P2O5 fraction on the same basis. Distinguish total, available and water-soluble phosphorus; no nominal-label or historical-grade default conversion.
electricity-basis	electricity	Net calorific value	MJ	Convert metered kWh using 1 kWh = 3.6 MJ; verify supplier electrical-energy reference, voltage and loss boundary. Unit conversion does not prove background compatibility.
water-basis	water	Volume	m3	Measure new supplied volume; mass water balance uses measured/traceable density and temperature, not the database secondary mass coefficient.
same-denominator	all inventory rows	reference flow	1 kg	Divide exchange totals by concurrent accepted net SSP mass in kg; reconcile curing work-in-progress, recycle, stocks and rejects separately. Every stage uses the same denominator.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Received beneficiated phosphate rock and purchased virgin contact-process 93–98% sulfuric acid solution; treated tap water and 1–35 kV power; traceable lots/providers
starting_condition_role	foreground production
product_classification_scope	Cured ungranulated bulk SSP subset of CPC 34621
recursive_input_rule	Purchased SSP is not phosphate-rock feed; disclose any same-category input and reassess applicability. Internal recycle does not import another background production burden
upstream_dataset_requirement	Use compatible upstream rock mining/beneficiation, acid manufacture, power, tap-water, inbound transport and off-site waste-treatment data; provider/composition/amount bases must match; missing backgrounds are not zero burdens
disclosure	Disclose start, upstream completion, campaign stocks, supplied solution/as-is product, waste destinations and release coverage; methodology is not a completed dataset

rule_id	applies_to	rule	source_ids
include-stages	ssp_production	Include receiving/grinding, dilution, acidulation, curing, crushing, bulk handling, dust/scrubbing controls and rinsing. Meter stages separately then aggregate one foreground unit; internal SSP transfers are not another reference-product output.	ec-lvic-aaf-2007; epa-ap42-ssp-1993
retain-sulfate	ssp_production	Calcium sulfate retained in SSP belongs to the product mixture; do not import wet-process phosphoric-acid filtration and invent a gypsum co-product.	ec-lvic-aaf-2007
scope-conditions	ssp_production	Verify absence of combustion-driven equipment, supplied steam/fuel drying, bagging, granulation, ammoniation, saleable scrubber acid and direct liquid environmental release. If any occurs, extend separately reviewed exchanges/process rules; do not continue this scope by assigning missing items zero.	ec-lvic-aaf-2007; epa-ap42-ssp-1993
emission-survey	ssp_production	Survey post-control, curing-building and fugitive releases. Screen rock-borne metals/radionuclides/organics and cleaning agents; add each actually present unlisted species/aid separately with identity and quantity verification. This table alone does not prove inventory completeness. Verify stormwater and wastewater routes.	epa-ap42-ssp-1993; ec-lvic-aaf-2007

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
ssp_production	Cured ungranulated SSP production	required	When scoped route applies	foreground production	1 kg accepted SSP

Grinding → acid dilution/mixing → den → stockpile curing → crushing → acceptance/bulk dispatch. Retain stage-level material/energy/control records. Keep physical mass, water, P, F and C balances separate from the environmental-burden ledger; both ends of internal dust/liquor loops have equal amounts, while the aggregated inventory contains only boundary crossings.

Process: Cured ungranulated SSP production (ssp_production)

Inputs

Product flows

rock (rock)

Phosphate ore received for electric grinding; measure delivered wet mass, moisture, P2O5 assay, carbonate carbon, organic carbon, F, Fe, Al, Mg and contaminants. Record beneficiation and grind size; do not treat the ore as pure apatite.

• Selected flow: Phosphate Ore f71b42aa-e220-4371-8fa4-9aa8946a6262
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 ; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
• Amount rule: Collected exchange amount using cp_feed, divided by concurrent accepted net SSP mass in kg, per 1 kg reference flow; no default quantity.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_feed
• Sources: ec-lvic-aaf-2007, epa-ap42-ssp-1993

acid (acid)

Received 93–98% sulfuric acid solution before measured on-site dilution. Record actual concentration, virgin contact-acid supplier, impurities and delivered mass. This row includes its carrier water; not kg of pure H2SO4.

• Selected flow: Sulfuric acid 7ee2e3c3-bee7-4520-92b7-3e23afbfcd6f
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 ; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
• Amount rule: Collected exchange amount using cp_feed, divided by concurrent accepted net SSP mass in kg, per 1 kg reference flow; no default quantity.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_feed
• Sources: ec-lvic-aaf-2007, epa-ap42-ssp-1993

electricity (electricity)

Purchased CN grid-average AC at 1–35 kV; the selected native locationOfSupply is CN, and another geography requires a separately verified compatible flow/provider. Meter electricity for grinding, conveyors, crushing, handling, pumps and air-pollution control. Record meter boundary, supplier/grid period and transformer losses. The native property is Net calorific value; use MJ of metered electrical energy and disclose this naming convention, not a fuel heating value.

• Selected flow: Alternating current 3d76981f-964a-4865-b588-0e067a2a1163
• Flow property / unit: Net calorific value 93a60a56-a3c8-11da-a746-0800200c9a66 ; unit group 93a60a57-a3c8-11da-a746-0800200c9a66 / MJ
• Amount rule: Collected exchange amount using cp_energy, divided by concurrent accepted net SSP mass in kg, per 1 kg reference flow; no default quantity.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_energy
• Sources: ec-lvic-aaf-2007, epa-ap42-ssp-1993

water (water)

Purchased treated tap water for acid dilution, scrubbing and cleaning. This selected UUID specifies production/supply at a water-treatment plant in Hong Kong (HK); use only for a compatible actual supply. Another geography or treatment requires a separately verified flow/provider. Meter only new supply; internally circulated water is not another input. Native reference is volume m3; do not apply the database screening mass coefficient as site density.

• Selected flow: Tap water 3a8411b6-e476-4f98-9d77-0d492661a07f
• Flow property / unit: Volume 93a60a56-a3c8-22da-a746-0800200c9a66 ; unit group 93a60a57-a3c8-12da-a746-0800200c9a66 / m3
• Amount rule: Collected exchange amount using cp_water, divided by concurrent accepted net SSP mass in kg, per 1 kg reference flow; no default quantity.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_water
• Sources: ec-lvic-aaf-2007, epa-ap42-ssp-1993

Outputs

Product flows

ssp (ssp)

One accepted cured ungranulated SSP mixture at bulk dispatch, including actual moisture and retained calcium sulfate, excluding packaging and rejected product. Its grade must be measured; the identity record’s 0-20-0-11S description is not a default assay.

• Selected flow: Superphosphate 8c9749b5-e19f-4480-a575-3058aff804b3
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 ; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
• Amount rule: 1 kg
• Value mode: fixed_value
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_product
• Sources: ec-lvic-aaf-2007, epa-ap42-ssp-1993, agrophos-ssp-process

Waste flows

scrubber_purge (scrubber_purge)

Fluoride/phosphate-bearing aqueous SSP scrubber purge sent to off-site treatment; wet solution mass, acidity, dissolved/suspended solids and receiver acceptance required. Rinse liquor joining the same tank is included once. Internal reuse is excluded from this outward exchange.

• Selected flow: Fluoride/phosphate-bearing aqueous SSP scrubber purge
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
• Amount rule: Collected exchange amount using cp_waste, divided by concurrent accepted net SSP mass in kg, per 1 kg reference flow; no default quantity.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_waste
• Sources: ec-lvic-aaf-2007, epa-ap42-ssp-1993

scrubber_sludge (scrubber_sludge)

Conditional settled silica/phosphate-bearing scrubber sludge sent off site; measure wet mass, dry solids, fluoride, metals and acceptance. This is not assumed pure calcium fluoride or biological sewage sludge. Record zero with evidence if no separate solids removal occurs.

• Selected flow: Silica/phosphate-bearing SSP scrubber sludge
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
• Amount rule: Collected exchange amount using cp_waste, divided by concurrent accepted net SSP mass in kg, per 1 kg reference flow; no default quantity.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_waste
• Sources: ec-lvic-aaf-2007, epa-ap42-ssp-1993

dust_waste (dust_waste)

Conditional captured phosphate dust actually discarded, not returned to the den. Identify rock/product dust and contamination; weigh receiver-bound mass and document acceptance. Recycled dust remains an internal physical loop, not waste or airborne emission.

• Selected flow: Dust 2a6c9b60-a075-45ec-b611-c3b4dd255935
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 ; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
• Amount rule: Collected exchange amount using cp_waste, divided by concurrent accepted net SSP mass in kg, per 1 kg reference flow; no default quantity.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_waste
• Sources: ec-lvic-aaf-2007, epa-ap42-ssp-1993

Elementary flows

hf (hf)

Hydrogen fluoride after controls plus captured-site fugitive discharge to outdoor air, unspecified subcompartment. Measure kg of molecular HF with validated species-resolved sampling. Total fluorine alone cannot define this quantity.

• Selected flow: hydrogen fluoride 08a91e70-3ddc-11dd-9804-0050c2490048
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 ; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
• Amount rule: Collected exchange amount using cp_air, divided by concurrent accepted net SSP mass in kg, per 1 kg reference flow; no default quantity.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_air
• Sources: ec-lvic-aaf-2007, epa-ap42-ssp-1993

sif4 (sif4)

Silicon tetrafluoride leaving controls/curing to outdoor air, unspecified subcompartment. Account for hydrolysis and actual sampling species; do not call scrubber hexafluorosilicate liquor airborne SiF4 or duplicate fluorine particulate mass.

• Selected flow: silicium tetrafluoride fe0acd60-3ddc-11dd-a706-0050c2490048
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 ; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
• Amount rule: Collected exchange amount using cp_air, divided by concurrent accepted net SSP mass in kg, per 1 kg reference flow; no default quantity.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_air
• Sources: ec-lvic-aaf-2007, epa-ap42-ssp-1993

pm_fine (pm_fine)

Emitted aerodynamic PM2.5 from ore unloading/grinding, den, curing, crushing and dispatch; measure after controls plus fugitives, to outdoor air unspecified. Do not use collected baghouse dust as emitted PM.

• Selected flow: particles (PM2.5) 08a91e70-3ddc-11dd-9293-0050c2490048
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 ; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
• Amount rule: Collected exchange amount using cp_air, divided by concurrent accepted net SSP mass in kg, per 1 kg reference flow; no default quantity.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_air
• Sources: ec-lvic-aaf-2007, epa-ap42-ssp-1993, epa-method201a-2020

pm_mid (pm_mid)

Emitted aerodynamic particles above 2.5 and up to 10 micrometres, to outdoor air unspecified. Derive only from paired compatible PM10 and PM2.5 measurements; report uncertainty and reject a negative difference.

• Selected flow: particles (PM2.5 - PM10) 08a91e70-3ddc-11dd-9501-0050c2490048
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 ; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
• Amount rule: Collected exchange amount using cp_air, divided by concurrent accepted net SSP mass in kg, per 1 kg reference flow; no default quantity.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_air
• Sources: ec-lvic-aaf-2007, epa-ap42-ssp-1993, epa-method201a-2020

pm_coarse (pm_coarse)

Emitted aerodynamic particles above 10 micrometres, to outdoor air unspecified. Requires compatible total filterable PM and PM10 coverage; no assumed fraction and no nested addition of total PM, PM10 and PM2.5.

• Selected flow: particles (> PM10) fe0acd60-3ddc-11dd-a70a-0050c2490048
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 ; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
• Amount rule: Collected exchange amount using cp_air, divided by concurrent accepted net SSP mass in kg, per 1 kg reference flow; no default quantity.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_air
• Sources: ec-lvic-aaf-2007, epa-ap42-ssp-1993, epa-method201a-2020

co2 (co2)

Conditional mineral/fossil carbon dioxide released during acidulation, to outdoor air unspecified; measure carbonate carbon reacted and emitted CO2, with carbon retained in product/purge/stock reconciled. Electricity background CO2 is not another foreground emission.

• Selected flow: carbon dioxide (fossil) 08a91e70-3ddc-11dd-923d-0050c2490048
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 ; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
• Amount rule: Collected exchange amount using cp_carbon, divided by concurrent accepted net SSP mass in kg, per 1 kg reference flow; no default quantity.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_carbon
• Sources: ec-lvic-aaf-2007, epa-ap42-ssp-1993

co2_biogenic (co2_biogenic)

Conditional biogenic carbon dioxide, only where carbon-origin evidence and oxidation measurements establish it. Retain it in LCI even if a separate greenhouse-gas reporting convention omits it. Unknown rock organic-carbon origin must not be assigned biogenic by assumption.

• Selected flow: carbon dioxide (biogenic) 08a91e70-3ddc-11dd-9c15-0050c2490048
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 ; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
• Amount rule: Collected exchange amount using cp_carbon, divided by concurrent accepted net SSP mass in kg, per 1 kg reference flow; no default quantity.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_carbon
• Sources: ec-lvic-aaf-2007, epa-ap42-ssp-1993

methanethiol (methanethiol)

Conditional methyl mercaptan to outdoor air unspecified only if species analysis detects CAS 74-93-1. BREF identifies mercaptan odour potential, not universal methanethiol release; an odour score or total VOC cannot supply this row. Add separately identified other compounds when the survey finds them.

• Selected flow: methyl mercaptan fe0acd60-3ddc-11dd-9e59-0050c2490048
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 ; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
• Amount rule: Collected exchange amount using cp_air, divided by concurrent accepted net SSP mass in kg, per 1 kg reference flow; no default quantity.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_air
• Sources: ec-lvic-aaf-2007, epa-ap42-ssp-1993

water_vapour (water_vapour)

Conditional actual process-attributable water vapour reaching outdoor air, unspecified subcompartment, from acidulation, curing or wet offgas controls after any actual capture/condensation. Reconcile outlet gaseous water with incoming carrier-air moisture on matched gas-quantity and T/P bases. Internal evaporation followed by recovery is not this external exchange. Keep recovered condensate, aqueous purge, product free/structural water and entrained liquid/aerosol water distinct; do not count the same water twice with particulate mass. No positive amount follows from the word evaporation, and zero requires actual absence or a supported net-water reconciliation; missing data remain unresolved. Use cp_water and the common complete-period normalization.

• Selected flow: water vapour fe0acd60-3ddc-11dd-ac04-0050c2490048
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 ; unit group 93a60a57-a4c8-11da-a746-0800200c9a66 / kg
• Amount rule: Collected exchange amount using cp_water, divided by concurrent accepted net SSP mass in kg, per 1 kg reference flow; no default quantity.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_water
• Sources: ec-lvic-aaf-2007, epa-ap42-ssp-1993

7. Allocation and Co-product Handling

rule_id	applies_to	rule	source_ids
separate-recycle	ssp_production	Retain internal dust/liquor recycle physically; it is not a co-product and does not duplicate upstream burdens. Disposed residues carry actual treatment burdens, without automatic substitution credits.	ec-lvic-aaf-2007; epa-ap42-ssp-1993
single-mixture	ssp	Reference product is the complete SSP mixture; calcium sulfate, monocalcium phosphate and moisture are not separate co-products. No other sold product exists in this scope; do not allocate among nutrient components.	ec-lvic-aaf-2007
shared-utilities	ssp_production	Prefer submetering/campaign segregation for shared electricity, water and controls; otherwise use documented causal drivers and disclose shared scope/uncertainty. No default revenue split; never scale physical product quantity by a burden share.	agrophos-ssp-process; ec-lvic-aaf-2007

8. Foreground Data Collection, Calculation, and Quality Rules

Data Collection Protocols

protocol_id	process_id	flow_role	record_type	raw_fields	collection_method	unit	frequency	temporal_coverage	site_scope	aggregation_rule	quality_evidence
cp_product	ssp_production	ssp	weighing/acceptance	campaign; SKU; net dispatch; returns/reacceptance; opening/closing WIP and finished stock; production history and carried inventory burdens; rejects/recycle; moisture; P2O5 forms/bases; free acid; S/Ca; size; impurities/grade	Calibrated scales and stock reconciliation; paired laboratory samples and applicable-grade acceptance	kg	each batch/dispatch	same declared period including starts/abnormal operation and cross-period curing	declared scoped site, with stock/shared facilities identified	per 1 kg reference flow	calibration; assays; acceptance; detection limits; reconciliation; uncertainty
cp_feed	ssp_production	rock; acid	supply/feed records	provider; lot; receipt/feed amount; stock; acid concentration/impurities; ore moisture/composition/carbon origin/size; dilution water	Calibrated weighing/mass meters, receipt assays and stock reconciliation; volume delivery needs measured density/temperature	kg	each lot/feed	same declared period including starts/abnormal operation and cross-period curing	declared scoped site, with stock/shared facilities identified	per 1 kg reference flow	calibration; assays; acceptance; detection limits; reconciliation; uncertainty
cp_energy	ssp_production	electricity	submeter records	kWh; voltage; provider/grid period; meter boundary; stages; losses/shared drivers; abnormal operation	Stage electrical submeters and supply records; reconcile transformer/background loss boundaries	MJ	continuous/campaign	same declared period including starts/abnormal operation and cross-period curing	declared scoped site, with stock/shared facilities identified	per 1 kg reference flow	calibration; assays; acceptance; detection limits; reconciliation; uncertainty
cp_water	ssp_production	water; water_vapour	meter/recycle records	new water m3; use; temperature/density; acid carrier water; stocks; recycle liquor; purge; inlet/outlet gas moisture and matched gas quantities/rates; T/P and wet/dry basis; actual condensate/capture records; separate gas-phase H2O kg; evaporation/product water; free versus structural water and test conditions; independently measured reaction/phase conversion and water formation/consumption	Meter new supplied liquid in m3 and reconcile uses; retain circulation separately without adding to supply. For water_vapour, use validated paired outlet gas-moisture/quantity measurements and inlet carrier-air moisture to determine process-attributable gaseous H2O kg after actual recovery. Keep liquid condensate/purge, entrained droplets, product free/structural water, independently evidenced reaction water and stocks separate. Use already integrated gas volume once, or integrate moisture concentration times volumetric flow rate over time. Do not infer evaporation from liquid supply volume or an unexplained balance residual; reconcile uncertainty and retain missing measurements as findings	m3; kg	continuous/campaign	same declared period including starts/abnormal operation and cross-period curing	declared scoped site, with stock/shared facilities identified	per 1 kg reference flow	calibration; assays; acceptance; detection limits; reconciliation; uncertainty
cp_waste	ssp_production	scrubber_purge; scrubber_sludge; dust_waste	outbound records/assays	wet mass; dry solids; F/P; acidity; metals/contamination; internal reuse; stock; receiver/treatment route	Weigh outbound consignments and reconcile manifests; assay receiver conditions; generated internal amount is not external disposal	kg	each consignment	same declared period including starts/abnormal operation and cross-period curing	declared scoped site, with stock/shared facilities identified	per 1 kg reference flow	calibration; assays; acceptance; detection limits; reconciliation; uncertainty
cp_air	ssp_production	hf; sif4; pm_fine; pm_mid; pm_coarse; methanethiol	emission tests/survey	species/compartment; total-F/molecular basis; size; concentration; dry/wet gas volume; T/P; moisture; operating hours; controls/bypass; fugitives; detection limits/uncertainty	Integrate post-control concentration with matching gas volume/time by source; quantify fugitives independently; validate species/size methods and use suitable alternatives for saturated wet gas	kg	representative tests plus annual operating reconciliation	same declared period including starts/abnormal operation and cross-period curing	declared scoped site, with stock/shared facilities identified	per 1 kg reference flow	calibration; assays; acceptance; detection limits; reconciliation; uncertainty
cp_carbon	ssp_production	co2; co2_biogenic	carbon balance/offgas	ore/acid carbon; carbonate/organic carbon; origin split; retained carbon in product/waste/stocks; measured CO2/gas volume	Cross-check assays with gas volume/species measurements; unknown origin stays unresolved; origin labels do not replace measurement	kg	each campaign assay/representative test	same declared period including starts/abnormal operation and cross-period curing	declared scoped site, with stock/shared facilities identified	per 1 kg reference flow	calibration; assays; acceptance; detection limits; reconciliation; uncertainty

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
period-normalization	all inventory rows	Sum raw exchange quantities over the complete same route, as-is grade and declared period, including attributable failed/zero-output batches, starts/stops, cleaning and rework, then divide once by positive accepted net SSP mass in kg; ssp output = 1 kg. Do not average successful-batch ratios or divide pre-normalized per-kg amounts again. Reconcile returns/reacceptance, curing WIP and finished stocks with production history and carried burdens so acceptance is credited once and the attributed numerator covers the same output; burden adjustments do not erase raw physical exchanges. Internal recycle is not new accepted output. Do not divide whole-plant input by partial dispatch. If accepted output is zero, preserve raw totals and disclose no unit result rather than divide or omit burdens.	cp_product; cp_feed; cp_energy; cp_water; cp_waste; cp_air; cp_carbon	exchange amounts per 1 kg reference flow	ec-lvic-aaf-2007; agrophos-ssp-process
composition-reconciliation	rock; acid; ssp; scrubber_purge; scrubber_sludge	Use measured composition to conserve total mass and actual elements, including P/F/C and relevant Ca/S/H/O: inputs plus opening stocks equal outputs plus closing stocks and disclosed uncertainty/residual. Keep MCP/calcium-sulfate formation, actual acid/carbonate/fluoride reactions and water/dry-component species accounts separate. Water inputs plus independently evidenced reaction formation equal outputs plus stock change and actual consumption; distinguish structural water from free water and do not count hydration/dehydration as new water molecules. Validate balanced actual reaction equations against independent reactant/product/phase measurements and uncertainty; do not import an ideal ore recipe, fit reaction water or dry matter to a residual, or use COD as carbon mass. Wet mass times (1 minus measured moisture fraction) is only method-defined dry mass: state which free/structural water or other volatiles the test removes; it is not automatically the mass of anhydrous phosphate/calcium-sulfate phases. Identify each P2O5 assay form and basis. Reaction checks do not supply ore composition, acid demand, yield or emissions.	cp_product; cp_feed; cp_water; cp_waste; cp_carbon	element/water balances and composition disclosure	ec-lvic-aaf-2007
fluorine-accounting	hf; sif4	For species-resolved F-basis mass, convert to molecular mass using that assayed species molecular mass divided by the total mass of all F atoms in one molecule (conversion ratio M_species / (n_F × M_F), where n_F is 1 for HF and 4 for SiF4). Treat HF and SiF4 separately. Unspeciated total F cannot be arbitrarily split or added again to fluorine-bearing particle mass.	cp_air; cp_waste	molecular species releases and F balance	epa-ap42-ssp-1993; ec-lvic-aaf-2007
particle-partition	pm_fine; pm_mid; pm_coarse	Paired compatible tests: middle fraction = PM10 minus PM2.5; coarse fraction = total filterable PM minus PM10. Preserve uncertainty and reject negative differences. Determine/report condensable PM separately and check overlap with species/size entries; do not force Method 201A onto wet-droplet conditions.	cp_air	nonoverlapping air-particle fractions and coverage disclosure	epa-method201a-2020; epa-ap42-ssp-1993

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
identity-and-provider	all inventory rows	Establish UUID identity separately from provider amount/background compatibility; never replace unresolved UUIDs with adjacent species.	provider specification, lot, composition, dimension and background metadata
coverage-and-time	ssp_production	Prove scoped operations and all boundary exchanges; disclose representativeness, annual/campaign coverage, missing/below-detection values and uncertainty.	process map, meter register, assays/control records and source-by-source survey
no-defaults	all inventory rows	No 1993 factors, 2007 plant tables/BAT concentrations or commercial grade become positive-release, recipe or energy defaults; site_specific means future collection requirements.	actual collection and method applicability

9. Validation Rules

rule_id	applies_to	rule	source_ids
reference-unique	ssp	Exactly one ssp reference output: 1 kg accepted as-is net mass. Internal transfers are not another reference output; both languages, inventory, collection and conversion share the denominator.	agrophos-ssp-process; ec-lvic-aaf-2007
scope-and-background	ssp_production	Verify every scope condition, upstream completion and provider basis; missing/incompatible backgrounds, unresolved waste identity or unproven zero releases prohibit a complete-dataset claim.	ec-lvic-aaf-2007; epa-ap42-ssp-1993
balances	ssp_production	Recheck physical mass/water/P/F/C and burden ledgers separately; investigate discrepancies, match internal link quantities, retain sulfate in SSP without a gypsum co-product, and use no invented reaction yield.	ec-lvic-aaf-2007
emission-completeness	ssp_production	Verify HF/SiF4 molecular bases, nonoverlapping PM/condensable coverage and all actual species. Total F/VOC/odour is not a specific species; retain biogenic CO2 in LCI. Unmeasured or method-inapplicable releases remain unresolved.	epa-ap42-ssp-1993; epa-method201a-2020; ec-lvic-aaf-2007

10. Published Dataset Profile

Field	Value
dataset_role	Production dataset after complete site collection/review; this record is methodology only
downstream_use	secondary_dataset; background_dataset
allowed_use	Upstream modelling of compatible powdered SSP route/delivery, with actual grade and moisture disclosed
excluded_use	TSP/granular/mixed-acid/PAPR/fortified fertilizer; pure monocalcium phosphate; field nutrient equivalence; generic complete background with missing upstream data
required_metadata	All reference qualifiers, period/providers, map, stock/composition, units, upstream/waste links and compartments
required_quality_disclosure	Collection coverage, detection limits, basis compatibility, unresolved identity/releases, uncertainty and scientific-review status
update_trigger	Changed feed/acid origin or concentration, grade/size, route/delivery/controls, energy, release or background

11. Data Sources

source_id	type	reference	used_for
ec-lvic-aaf-2007	official_guidance	European Commission, LVIC-AAF BREF, August 2007, chapter 10, especially 10.1, 10.2, Figure 10.1 and 10.4.1–10.4.3; https://bureau-industrial-transformation.jrc.ec.europa.eu/sites/default/files/2019-11/lvic_aaf.pdf ; retrieved 2026-10-14	Route/SSP mixture, sale after curing, dust/fluorine control; no historical plant quantity, BAT concentration/efficiency, grade or residence-time default
epa-ap42-ssp-1993	official_guidance	US EPA AP-42 section 8.5.1 Normal Superphosphates, July 1993, reformatted January 1995, pp. 8.5.1-1–4; https://www.epa.gov/sites/default/files/2020-09/documents/8.5.1_normal_superphosphates.pdf ; retrieved 2026-10-14	Acidulation/curing and source-specific fluorine/particles; E-rated historical factors not adopted; absent metal/organic factors do not establish zero releases
epa-ap42-tsp-1993	official_guidance	US EPA AP-42 section 8.5.2 Triple Superphosphates, July 1993, reformatted January 1995, p. 8.5.2-1; https://www.epa.gov/sites/default/files/2020-09/documents/8.5.2_triple_superphosphates.pdf ; retrieved 2026-10-14	Counterevidence/exclusion for phosphoric-acid TSP route; no imported TSP feed/yield
agrophos-ssp-process	literature	Agro Phos India Limited, Manufacturing Process, section 1 Single Super Phosphate (SSP); https://www.agrophos.com/manufacturing-process/ ; retrieved 2026-10-14	Producer purchased acid, powder/granular branches and assay acceptance; single-site bags/temperature/details not universal defaults; bagging branch not adopted
epa-method201a-2020	method_factor	US EPA Method 201A, October 7 2020, sections 1.1–1.6; https://www.epa.gov/sites/default/files/2019-08/documents/method_201a_0.pdf ; retrieved 2026-10-14	Stationary filterable PM2.5/PM10 and differences; unsuitable for saturated wet-droplet gas; condensables require suitable separate testing/overlap checks; no default coarse fraction