TSG 51-2023 Crane Safety Regulation Explained: Full Compliance Guide
At a glance: TSG 51-2023 Crane Safety Technical Supervision Regulation, published in May 2023 and effective January 1, 2024, consolidates and replaces several legacy regulations including TSG Q0002, TSG Q7015, and TSG Q7016. This article breaks down the key changes across all eight chapters—covering the introduction of risk-based inspection (RBI), compliance requirements for AI-enabled Safety Monitoring Systems, refined safety assessment procedures for aging cranes, and a unified application pathway for manufacturing licenses and Type Tests—to help you stay compliant and avoid inspection failures or equipment downtime.
TSG 51-2023 Explained: Key Changes by Chapter
General Principles | Design & Manufacturing | Installation & Retrofit | Operation Management | Inspection | Safety Assessment | Supplementary Provisions
TSG 51-2023: Regulatory Status and Transition from Legacy Rules
TSG 51-2023 is the unified safety technical specification for lifting appliances issued by the State Administration for Market Regulation. Effective January 1, 2024, it simultaneously replaces four legacy regulations: TSG Q0002-2008 (Safety Technical Supervision Regulation for Cranes—Overhead Type), TSG Q7015-2016 (Periodic Inspection Rules for Lifting Appliances), TSG Q7016-2016 (Supervision Inspection Rules for Installation, Retrofit, and Major Overhaul of Lifting Appliances), and select provisions of TSG Q7001-2019. The most significant structural change is the consolidation of the entire lifecycle—design, manufacturing, installation, retrofit, operation, and inspection—into a single regulation, eliminating the conflicts and interpretive ambiguities that arose from having multiple overlapping documents.
Transition period: January 1, 2024 through December 31, 2025. During this window, applications already accepted under the legacy regulations may continue to be processed under those rules. Starting January 1, 2026, all matters will be handled exclusively under TSG 51-2023. For new installation/retrofit/repair notifications filed during the transition period, we recommend preparing documentation directly in accordance with the new regulation to avoid costly resubmissions.
Chapter 1: General Principles—Expanded Scope of Application
Chapter 1 (Articles 1–6) of TSG 51-2023 defines the regulation's scope of application and exclusions. Compared with the legacy rules, three changes deserve particular attention:
| Clause | Key Changes | Impact on Enterprises |
|---|---|---|
| Article2Item | scope of application Clarifycoverage"overhead type, gantry type, tower type, mobile type, Portal base Type, lift, Cable Type, Machinery Type Parking Equipment"Eight Major Categories | and《special equipment Catalogue》(2014Edition)Maintain Full Consistency, No Longer"Electric Hoist Whether the Complete Machine Belongs tocrane"Dispute——3tand Abovelifting height≥2mof Electric Hoist Complete Machine Classified intooverhead type/gantry type Category Management |
| Article4Item | For the First Time"Risk-Based Inspection(RBI)"Incorporated into Procedure Body Text (Main Content) | user unit May Apply Based on Actual Equipmentrisk leveladjustmentinspection interval(May Be Extended Up to3Once per Year), Shall Submitrisk assessment report(By Qualifiedmechanism Issued) |
| Article6Item | Exclusion Scope Expanded"In-Plant Intelligent Logistics Handling System(AGV/AMR/RGVSpecialized Lifting Device)" | Automated Lifting Device in Smart Factory(Such as KBK+AGVInterlocking System)If the Complete Machine Is Non-Dismantlable, and Work Area Is Provided with Safety Isolation, May Be Excluded fromspecial equipment management |
Chapter 2 Design & Manufacturing — Type Tests and Design Document Review
Chapter 2 (Articles 7–28) is the most heavily revised section of TSG 51-2023, introducing new requirements for crane manufacturers' design capabilities and type testing:
Article 11 — New Type Test Classification
The revised procedure classifies type tests into three categories: ① Initial Type Test — required for new products, new specifications, or new materials; ② Modified Type Test — triggered by design changes (e.g., changes to primary materials, main structural type, or significant safety device modifications); ③ Renewal Type Test — for extending an existing certificate (application must be submitted 6 months before the certificate expires).
Key Changes:
The certificate validity period is extended from 4 years under the old procedure to 5 years, but a new "periodic audit clause" has been added — type test agencies may conduct unannounced supervision audits during the certificate's validity (at least once per certificate period). Certificates may be suspended or revoked if audit results are unsatisfactory.
Design Document Review (Article 16):
In addition to the general arrangement drawing, component drawings, and calculation report, the new procedure requires a design description of the intelligent safety system — for cranes equipped with AI-based vision monitoring, remote operation, or automatic operation functions, manufacturers must describe the safety system architecture, fail-safe design principles, and Fail-safe verification results.
This marks the first time TSG regulations have imposed explicit design review requirements for AI/intelligent safety systems. When applying for type tests on smart overhead cranes or unmanned cranes, manufacturers must additionally submit calibration reports for the AI vision inspection system's false positive/missed detection rates, safety threshold calculations for communication latency in remote operation, and verification records of the emergency stop logic in automatic operation mode.
Chapters 3–4 Installation, Retrofit & Overhaul — New Notification and Inspection Procedures
Chapters 3–4 (Articles 29–44) consolidate the supervision inspection requirements for installation, retrofit, and overhaul previously covered in the old Q7015 and Q7016 procedures. Three core changes stand out:
- Simplified Installation Notification: Installation units can now submit notification online through the "Special Equipment Public Service Platform" before commencing work — no more paper submissions to the local market supervision authority. The acceptance result is returned online within 5 working days. Multiple identical-model units installed at the same site for the same user unit can be combined into a single notification.
- Clearer Boundary Between Retrofit and Major Overhaul: Appendix C of the new procedure provides an explicit checklist for "major overhaul" — replacement or reinforcement of main structural components (main girder, end carriage, outrigger, tower mast, etc.), complete replacement of the hoisting mechanism, and upgrades to the electrical control system (e.g., from relay-based to PLC-based). Work falling within the checklist requires supervision inspection; routine repairs outside the checklist (such as wire rope replacement, brake, crane wheel, or limit switch replacement) do not require supervision inspection.
- Higher Load Test Requirements After Retrofit: Post-retrofit load tests are upgraded from 1.0 times rated load under the old procedure to 1.1 times rated load for static load plus 1.0 times rated load for dynamic load, with the static load holding time extended from 10 minutes to 15 minutes.
Chapter 5 User Management — Strengthened Responsibilities for User Units
Chapter 5 (Articles 45–62) is the section user units need to pay closest attention to. New and reinforced requirements include:
| Clause | Newrequirements | Implementation Key Points |
|---|---|---|
| Article47Item | user unit Shall Establish"One Machine One File"Electronic File | File Shall Include Equipmentlifecycle Records: factory documentationinstallation notification Certificate of Supervision Inspectionperiodic inspection Report Daily Inspection Maintenance Record Fault/Accident Record Retrofit/Repair Documentation.Electronic File Has Same Legal Effect as Paper. |
| Article51Item | daily inspection/monthly inspection/Annual Inspection Itemized List of Specific Items | New Procedure Appendix DProvides Three Mandatoryinspection Form Examples.Core Changes: daily inspection Shall Include"Safety Monitoring System Self-Inspection"(For Equipment Equipped with GB/T 28264 Safety Monitoring and Management System Equipment), monthly inspection Shall Include"Brake Gap Measurement Record". |
| Article55Item | Aged Equipmentsafety assessment Trigger Condition | Reachingdesign service life(Typically20Years)Continued Use, After Major Accident Repair, user unit After Relocation Re-installationof, Shall Be by Qualifiedinspection body Conductedsafety assessment. |
| Article58Item | Remote Monitoring Datalegal effect | user unitofremote monitoring platform Records(Including Operating Hours, Lifting Number of Cycles, Fault Alarm Records, etc.)Verified Qualified, May Serve asperiodic inspection In the Item of"Operational Condition Verification"Basis, Reduce On-Site Inspection Workload. |
Chapters 6–7: Inspection & Safety Assessment — RBI and Online Monitoring Compliance
Chapter 6 (Articles 63–78) covers inspection requirements, while Chapter 7 (Articles 79–85) addresses safety assessment. These two chapters are the most critical sections for both user units and inspection bodies to fully understand:
Risk-Based Inspection (RBI) — Article 68: This is the most significant institutional innovation introduced by TSG 51-2023. User units may commission a qualified inspection body to conduct a risk assessment of in-service cranes (classified into Levels I–IV based on equipment failure probability and consequence severity). Cranes assessed as Level I (low risk) can have their inspection interval extended from 1 year to 3 years; Level II cranes can be extended to 2 years. The RBI assessment report remains valid for 3 years and must be renewed upon expiration. It is estimated that this approach can reduce annual inspection costs and downtime by 30%–50% for enterprises.
Online Monitoring in Lieu of Periodic Inspection — Article 70: For cranes that are difficult to take out of service for inspection due to continuous operating conditions (e.g., metallurgical foundry cranes, grab cranes used in waste incineration plants), if the safety monitoring system (compliant with GB/T 28264) has accumulated 12 consecutive months of operational data that passes review by an inspection body, and no safety-related failure has occurred during that period, the data may be used to substitute for the annual comprehensive inspection. This provision offers significant flexibility for equipment management in continuous-production facilities.
Safety Assessment for Aging Equipment — Articles 81–85: For cranes that have exceeded their design service life, the assessment must include: ① residual fatigue life of structural components (based on S-N curves and actual load spectra); ② non-destructive testing of critical weld seams (100% MT plus 20% UT sampling); ③ wear measurement of key components in the braking and hoisting mechanisms; ④ insulation aging and grounding resistance testing of the electrical system. The assessment report must conclude with either "continued use (with load/speed/operating-condition restrictions)" or "scrapping."
Compliance Action Checklist for the 2024–2025 Transition Period
Based on the full-chain requirements of TSG 51-2023, Kelude recommends that user units and manufacturers complete the following six compliance actions during the transition period:
Why Choose Kelude Heavy Industry
Kelude's technical team has been involved throughout the TSG 51-2023 drafting process, bringing hands-on experience in regulation interpretation, type test application, design document review, and safety assessment. We have assisted 12 manufacturers in completing type test license renewals under the new regulation and provided RBI implementation consulting and compliance self-audit services to 20 user units.
