Local pipeline construction delivery · Calculation Rules
- Lifecycle status
- Candidate
- Content maturity
- Authored methodology
- Current version
- No published versionLast updated
- Readiness
- Review required
Methodology and translation states come from the source record; publishing this website does not change their review status.
Content languages
zh-CN · Aligned
Status, classification and source details
Readiness
- Warnings methodology_not_reviewed Authored methodology is candidate guidance and still requires methodology review.
Classification mapping
CPC 3.0:53251 · exact
Source
Calculation Rules
| rule_id | Applies to | Formula or rule | Inputs | Output | source_ids |
|---|---|---|---|---|---|
| calc_materials | supplied materials/components and their corresponding stocks, installed quantities and wastes | Per declared reference flow reconcile opening stocks + actual receipts − returns − closing stocks against installed amount, waste and internal reuse for each same material/state; retain rework. This balance does not create a total reference mass. | cp_materials; cp_waste | net attributable kg, m3 or m per declared reference flow | |
| calc_power | cn_lv_power; cn_mv_power | MJ = measured attributable kWh × 3.6 | cp_energy | MJ per declared reference flow | |
| calc_fuel | haul_diesel; site_diesel | Per declared reference flow conserve fuel issue/stock/refuelling balances. Convert volume to kg only with actual same-state density; LHV conversion requires its actual source and does not modify the mass-based adopted diesel identity. | cp_energy; cp_logistics | kg per declared reference flow | |
| calc_assets | shoring_steel; excavator_share; wood_pallet | Per declared reference flow attributable manufacture kg = measured configured net asset kg × supported dimensionless share. Across all projects/periods/reuses sum of shares <=1; do not invent lifetime or reset the denominator. | cp_assets | attributable kg per declared reference flow | |
| calc_water | all water and test-medium rows | Per declared reference flow reconcile each external intake/supply, actual reuse, retained storage/line pack, return, waste transfer and final release. Convert density/gas-condition quantities only using actual recorded compatible state; Volume is not automatically Normal Volume. | cp_water; cp_testing | distinct m3 or kg per declared reference flow | |
| calc_analytes | chloride_freshwater | Per declared reference flow sum measured chloride-ion concentration × matched actual final effluent volume after explicit concentration-to-kg conversion; report gross release and any supported background correction separately. Do not convert free chlorine to chloride by assumption. | cp_water | chloride kg per declared reference flow | |
| calc_air | all elementary air emission rows | Per declared reference flow integrate matched species/fraction concentration × gas volume on the same conditions, or documented applicable factor × measured actual activity, with unit conversion to kg. Measured fossil CO2 from carbon balance requires actual fossil-carbon content and oxidation evidence; no fixed rate, complete oxidation or unsupported species split is provided. | cp_air | separate actual-species kg per declared reference flow | |
| calc_thermal_test | test_hot_water; test_hot_water_return; test_steam; condensate_return | Per declared reference flow derive delivered test heat from actual same-circuit mass flow/time, measured supply/return states and supported applicable enthalpy difference; volume-to-mass requires actual same-state density. Reconcile hot-water supply/return temperature, steam quality and recovery route. Explicitly convert the derived heat to MJ. Unknown properties, quantities or supply boundary remain review; this heat ledger does not add the heating already included in a complete purchased heated-fluid input. | cp_testing; cp_energy; cp_water | measured states and supported test-heat MJ ledger per declared reference flow | ufgs-heat-2024 |
Data Quality Requirements
| requirement_id | Applies to | Requirement | Evidence |
|---|---|---|---|
| dq_entity | finished_pipeline | Same real complete configuration/interfaces and physical geometry must agree across reference, installed inventory, test register and accepted output. No default per-main mass/capacity/life. | cp_delivery |
| dq_routes | all inventory rows | Retain material/fluid/system-specific selection and actual process activity. Unknown supplied assemblies, quantities or test medium prevent a completeness claim; absence has evidence, not an assumed zero. | cp_materials; cp_testing |
| dq_time | all inventory rows | Cover all actual construction, idle support, corrections, rejects, tests/retests and restoration through the actual acceptance date; source year/region/technology and uncertainty are disclosed. | cp_energy; cp_delivery |
| dq_environment | all elementary rows | Verify chemistry, fossil/biogenic origin, environment/subcompartment, release time and size fraction. Record actual noise/vibration with receiver/time/frequency/instrument units separately; these impacts, land occupation and ecological disturbance remain explicitly uncovered where no compatible quantified model is provided, not zero. | cp_air; cp_water |
| dq_assets | all reusable assets | Audit total activity evidence and cumulative conserved manufacture shares independently; unknown life/usage or rental manufacture boundary cannot be called complete. | cp_assets |
9. Validation Rules
| rule_id | Rule | source_ids |
|---|---|---|
| v_delivery | Require all reference qualifiers, 1 item of complete actual accepted output, actual geometry/capacity/duty conditions and matching cp_delivery. Failed/partial handover remains incomplete; a classification match is not methodology approval. | un-cpc3-2025 |
| v_medium | Check water/pressure, gravity-sewer, gas and heat test/inspection routes against the actual specification and supplied material state. HK and US source numeric requirements are not default inventory or universal approvals; include actual repair/retest. | wsd-mainlaying-2023; cedd-civil-2026; ufgs-heat-2024; phmsa-distribution-2024 |
| v_identity | Verify each selected flow against its real primary property, state, route, geography, chemistry, compartment and unit group; unresolved identities keep exact atomic rows and review gaps. CN power voltage, HK water gate, gas pressure/volume and factory-assembly inclusions remain explicit. | |
| v_balance | All inventory/protocol bases are per declared reference flow. Conserve task/meter/material/water balances, trace actual density/linear-mass conversions and cumulative asset shares. Unproved mathematical relationships require review. | |
| v_release | Reject NO/NO2/N2O, NOx-equivalent, particle-size, fossil/biogenic, immediate/long-term, water-resource/wastewater and receiver mismatches. Missing direct release quantities are explicitly unresolved, never invented from equipment/fuel presence. | |
| v_completeness | Check all required/applicable stages and actual additional atomic exchanges, upstream links, internal assembly exclusions, bilingual row/rule/UUID consistency, noise/land/ecology coverage and lifecycle exclusions. Structural checks do not verify actual engineering acceptance, scientific approval or full-life completeness. |
10. Published Dataset Profile
| Field | Value |
|---|---|
| dataset_role | Construction foreground data package for a configured complete accepted local-pipeline entity |
| downstream_use | secondary_dataset; background_dataset |
| allowed_use | Explicitly qualified construction comparison or component of a separately evidenced lifecycle model, matching medium/interface/duty/geometry and supplier boundaries |
| excluded_use | Unqualified cross-medium/per-kg/per-km comparison; pipe-mill or service substitution; automatic full life, future losses/lifetime, compliance or scientific approval claims |
| required_metadata | All reference qualifiers, actual process/route/assembly/BOM/measurement/acceptance records, attribution, source dates and upstream IDs/interfaces |
| required_quality_disclosure | Unresolved flow/reference identities; unmeasured exchanges/conditional tasks; unknown asset shares; source regional/edition limits; missing upstream/lifecycle/noise/land/ecology coverage; uncertainty |
| update_trigger | Changed medium/configuration/material/joint/thermal system/interface/site geometry, acceptance specification, measured activities, asset attribution or compatible identity/source evidence |
11. Data Sources
| Source id | Type | Reference | Used for |
|---|---|---|---|
| un-cpc3-2025 | official_guidance | United Nations Statistics Division, CPC Version 3.0 Explanatory Notes, 30 June 2025, printed/PDF pp.280–281. https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Exp_Notes_30Jun2025.pdf | Local gas, water/sewer and heat-main scope; distinction from long-distance pipes and treatment plants; classification is not methodology approval |
| wsd-mainlaying-2023 | official_guidance | Hong Kong Water Supplies Department, Manual of Mainlaying Practice, 2012 edition with incorporated amendments through Amendment No.1/2023. §§2–3; §3.10 printed p.25/PDF32; §3.11 p.26/PDF33; §4.4.1 printed p.36/PDF43 (water-main replacement trenchless context). https://www.wsd.gov.hk/filemanager/en/content_1456/Manual_of_Mainlaying_Practice_Amendment_1_2023(finalized).pdf | HK supplied-pipe/field installation, testing, potable disinfection and replacement-main trenchless context; retained dated context, not global dosage, lifetime or current approval |
| cedd-civil-2026 | official_guidance | Hong Kong Civil Engineering and Development Department, General Specification for Civil Engineering Works, 2020 edition, Volume1 Rev8 including Amendment No.3/2026 dated23July2026. §§5.11–5.16A; 5.53–5.55 printed5.20–5.21/PDF167–168; 5.102–5.107 printed5.37–5.39/PDF184–186; Appendix5.4. https://www.cedd.gov.hk/filemanager/eng/content_978/GS%202020%20Vol%201%20Rev%208_clean.pdf | HK drainage pipe materials, bedding/field assembly and gravity/pressure test distinction; project-specific specification controls, no default trench widths or quantities |
| ufgs-heat-2024 | official_guidance | USACE/NAVFAC/AFCEC, UFGS33 61 13 Pre-Engineered Underground Heat Distribution System, August2024, retained version referencing UMRL July2026. §1.2.3 p9; §§2.2.3–2.2.5 p16; §§2.3.3–2.3.6 pp18–20; §2.5/Table1 p28; §2.6 p31; §§3.5–3.6 pp37–40, including §3.6.2.3 operational testing p40. https://www.wbdg.org/FFC/DOD/UFGS/UFGS%2033%2061%2013.pdf | Distinct actual steam/hot-water carrier, return, high-temperature insulation/casing, field installation and carrier/casing/operational tests. Guide requires project editing; do not impose every system or numeric design value |
| phmsa-distribution-2024 | official_guidance | Oak Ridge National Laboratory/Blade Energy Partners for PHMSA, Integrity Assessment of Distribution Pipelines, ORNL/SPR-2023/3188, January2024, official transmittal30August2024. §3.2 printedpp6–7/PDF18–19; §4.1 printedp10/PDF22. https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/2024-09/Report%20to%20Congress%20-%20Integrity%20Assessments%20of%20Distribution%20Pipelines.pdf | Gas distribution material/joint distinction and new-line testing context; historical inventory shares and in-service integrity-assessment difficulty are not new-build recipes or universal hydrotest requirements |
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