海上クレーン作業における人的ミス削減の新安全モデル(Engineers offer roadmap to close human error gap in offshore crane safety)

2026-04-14 ヒューストン大学(UH)

米国のUniversity of Houstonの研究チームは、洋上クレーン作業の安全性を向上させる新たな解析手法を開発した。洋上では波や風の影響で荷物が大きく揺れ、事故リスクが高まるが、本研究ではクレーンと吊り荷の動的挙動を精密にモデル化し、危険な振動や衝突の発生条件を予測できるようにした。さらに、リアルタイムでの動きの把握や制御への応用も視野に入れており、安全な操作指針の構築に貢献する。これにより、海洋エネルギー開発や港湾作業などでの事故防止と作業効率向上が期待される。

海上クレーン作業における人的ミス削減の新安全モデル(Engineers offer roadmap to close human error gap in offshore crane safety)
A UH professor has found that a staggering 80% of offshore accidents are driven by human and organizational factors and he has found complementary strengths to address the inconsistencies.

<関連情報>

クレーン安全基準の比較:人間工学的観点から Comparison of Crane Safety Standards: A Human Factors Perspective

Pratikshya Tiwari,Weihang Zhu & Kevin McSweeney
IISE Transactions on Occupational Ergonomics and Human Factors  Published:13 Jan 2026
DOI:https://doi.org/10.1080/24725838.2025.2612656

OCCUPATIONAL APPLICATIONS

We compared offshore crane safety standards in the United States, United Kingdom, and Norway, focusing on human factors contributing to incidents. High similarity was found in maintenance procedures, hand signals, and communication, reflecting shared priorities like adhering to manufacturer recommendations and enforcing substance abuse policies. Moderate alignment was observed in inspection intervals, personal protective equipment requirements, and personnel roles, with some variation in specific practices. Notable gaps were identified in training, lift categorization, and personnel qualifications, with the United States emphasizing certification timelines, while the United Kingdom and Norway focus on ongoing competence. These findings highlight strengths in each standard and offer a roadmap for harmonizing global practices. Practitioners can use these results to benchmark current practices, address gaps, and reduce human error. By aligning international standards, practitioners can develop more effective training, improve communication protocols, and implement consistent safety measures, ultimately enhancing the reliability and safety of offshore lifting operations.

TECHNICAL ABSTRACT

Background

Cranes are vital in industrial and construction settings for lifting and moving heavy objects precisely. However, their use carries substantial risks, including structural failures, unstable loads, and human error, leading to injuries, property damage, and delays. Comprehensive safety standards developed by regulatory bodies address these risks, covering design, installation, operation, maintenance, and inspection protocols.

Purpose

We compared offshore crane safety standards across several developed and developing countries, emphasizing human factors. We examined standards from the United States, the United Kingdom, Norway, and partially in Nigeria and Australia, to identify areas for improvement and potential harmonization and to promote greater consistency and safety in offshore operations.

Methods

We conducted a comparative analysis of national safety standards using 11 categories derived from human factors identified in the American Bureau of Shipping (ABS) root cause maps. These categories served as a framework for comparing how different nations address human factors in crane operations, examining maintenance practices, communication protocols, inspection intervals, training frameworks, and weather conditions. A similarity scoring method (1–10 scale) was applied to assess alignment.

Results

Our analysis revealed high alignment in maintenance procedures, hand signals, and communication protocols, reflecting shared priorities. Moderate consistency was found in inspection intervals, personal protective equipment, and personnel roles, with regional variations. Gaps were identified in training, lift categorization, and personnel qualifications, where the U.S. emphasizes certification timelines, while the United Kingdom and Norway prioritize ongoing competence.

Conclusions

Our results highlight strengths and gaps in standards, offering a roadmap for harmonizing practices globally. Insights gained can help policymakers refine standards, guide industry stakeholders in reducing human error, fostering safer workplaces and aligning practices with global norms. However, limited access to full standards remains a major barrier to comparative research.

0103機械力学・制御
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