コンテナ港脱炭素化に向けた41tラバータイヤ式ガントリークレーンのライフサイクルカーボンフットプリント評価
Life-Cycle Carbon Footprint Assessment of a 41 t Rubber-Tyred Gantry Crane for Container-Port Decarbonization (原題)
Xinqi Yao, Feng Yuan, Yu Song, Changchang Ge, Yang Shen, Chao Mi
🤖 gxceed AI 要約
日本語
ISO 14040/14044/14067に準拠し、41tディーゼル・電気式RTGクレーンのcradle-to-graveカーボンフットプリントを評価。機能単位はTEU処理量で、基準値は1RTGあたり3735.73 t CO2e（1.868 kg CO2e/TEU）。使用段階が84.77%を占め、運用エネルギーと発電機効率が支配的要因。モンテカルロ解析でも使用段階が最大寄与で、現場固有の燃料強度が移転可能性の鍵となる。
English
A cradle-to-grave LCA of a 41 t diesel-electric RTG crane per ISO 14040/14044/14067. Baseline footprint is 3,735.73 t CO2e per crane (1.868 kg CO2e/TEU), with the use phase contributing 84.77%. Monte Carlo analysis confirms operational energy and generator efficiency dominate, and site-specific fuel intensity is critical for transferability.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
港湾荷役機械の製品別LCAは日本でもScope 3算定やサプライチェーン排出量開示の精緻化に直結する。SSBJ基準や有報でのScope 3対応を進める物流・建設機械メーカーにとって、BOMベースの透明なインベントリ手法は実務的参考になる。
In the global GX context
Provides rare product-level life-cycle evidence for large cargo-handling equipment, supporting Scope 3 category 1/2 accounting and port decarbonization planning under frameworks like CSRD and ISSB. The transparent BOM-based inventory and uncertainty analysis offer a replicable methodology for other heavy machinery.
👥 読者別の含意
🔬研究者:港湾機械のLCAにおけるBOMベースの透明なインベントリ構築と不確実性評価の手法を学べる。
🏢実務担当者:RTGクレーンのScope 3算定や電動化投資判断に、使用段階が支配的である定量的根拠を提供する。
🏛政策担当者:港湾脱炭素政策において、運用段階の燃料強度改善と電動化促進の優先度を裏付けるデータとなる。
📄 Abstract（原文）
Container terminals are simultaneously advancing automation and digitalization while facing increasingly stringent greenhouse-gas (GHG) reduction requirements. However, product-level life-cycle evidence for large cargo-handling equipment remains scarce, particularly when engineering bill of materials (BOMs), process-specific factory records, logistics, long-term operation, and end-of-life treatment are integrated in one transparent inventory. This study aims to quantify the life-cycle carbon footprint of a representative 41 t diesel–electric rubber-tyred gantry (RTG) crane, identify its dominant emission hotspots, and test the robustness of the resulting decarbonization priorities. A cradle-to-grave system boundary was implemented following ISO 14040, ISO 14044, and ISO 14067. The functional unit is one twenty-foot equivalent unit (TEU) handled, with a reference system of one RTG operating for 20 years at 100,000 TEU/year. The inventory combines an engineering BOMs covering nearly 2000 components, 12 months of process-specific production records, and identified secondary or proxy data for selected transport, use, and end-of-life processes; use-phase energy demand is based on comparable diesel–electric RTGs rather than a 20-year measurement of the target crane. The adopted diesel life-cycle emission factor is 3.797 kg CO2e/kg diesel. The baseline footprint is 3735.73 t CO2e per RTG, or 1.868 kg CO2e/TEU. The use phase contributes 84.77%, followed by raw-material acquisition and inbound transport (9.93%), product distribution (4.02%), manufacturing (1.21%), and represented end-of-life treatment (0.08%). Parameter-specific deterministic scenarios and a 10,000-run Monte Carlo analysis evaluate uncertainty. The Monte Carlo median is 3675.97 t CO2e per RTG, with a 95% simulation interval of 2854.48–4696.58 t CO2e; normalized intensity ranges from 1.625 to 2.096 kg CO2e/TEU. The use phase remains the largest life-cycle contributor in every simulation. These results show that operational energy demand and generator efficiency govern the life-cycle footprint under the modelled diesel–electric configuration, while also demonstrating that site-specific fuel intensity is a critical transferability parameter.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/jmse14201891first seen 2026-10-14 05:10:12
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