Acceptance requirements for tunnel lining trolleys (also known as formwork travellers or gantries) are crucial to ensure safety, эффективность, and the quality of the final tunnel lining. These requirements are typically defined in the project specifications, relevant codes and standards, and agreed upon between the client, contractor, and sometimes a third-party inspection agency.
Acceptance requirements for tunnel lining trolleys
The acceptance process usually involves several stages:
Design Review and Approval: Before manufacturing.
Factory Acceptance Test (FAT): At the manufacturer’s workshop.
Site Acceptance Test (SAT): After assembly on site.
Operational Performance Verification: During initial use.
Here’s a breakdown of common acceptance requirements:
я. Design and Engineering Documentation:
Compliance with Specifications: The trolley design must meet all requirements outlined in the project contract and technical specifications.
Structural Calculations: Detailed structural analysis and calculations demonstrating stability, сила, and stiffness under all operational loads (including concrete pressure, self-weight, dynamic loads).
Drawings: Comprehensive general arrangement drawings, detailed fabrication drawings, hydraulic schematics, electrical schematics, and control system diagrams.
Material Certifications: Certificates for all primary structural materials (steel grades, болты, п.) and critical components (hydraulic cylinders, motors, electrical parts).
Welding Procedures & Qualifications: Welding Procedure Specifications (WPS), Procedure Qualification Records (PQR), and Welder Qualification Records (WQR) for all structural welds.
Risk Assessment & Safety Plan: Documented risk assessment for operation and maintenance, and a plan detailing safety features.
Operational & Maintenance Manuals: Clear and comprehensive manuals for operation, routine maintenance, исправление проблем, and spare parts lists.
II. Manufacturing and Assembly Quality (Often checked during FAT & SAT):
Dimensional Accuracy: Verification of overall dimensions, critical component dimensions, and assembly tolerances against approved drawings.
Welding Quality: Неразрушающее тестирование (Непрерывный) of critical welds (например, UT, ГОРА, PT) as per specified standards. Visual inspection of all welds.
Подготовка поверхности & Coating: Correct surface preparation and application of protective coatings (например, покрасить) as per specifications, including thickness checks.
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For more detailed information on the acceptance requirements for tunnel lining dollies visit: https://www.gf-bridge-tunnel.com/a/blog/acceptance-requirements-for-tunnel-lining-trolleys.html
