GB 7588.1-2020 Core Technical Requirements
GB 7588.1-2020 "Safety Code for the Construction and Installation of Electric Lifts" is the latest version released in December 2020, replacing GB 7588-2003, with a transition period until June 30, 2023. Main technical changes: (1) Unintended Car Movement Protection (UCMP): lifts are required to stop within a specified distance when the car moves unintentionally (e.g., car movement with doors open), with a stopping distance not exceeding 0.12 m (hydraulic buffer) or 0.20 m (polyurethane buffer); (2) Door circuit detection: the electrical safety circuits of landing doors and car doors must be equipped with short-circuit detection to prevent the lift from operating with doors open due to circuit shorting; (3) Electrical safety circuit redundancy: critical electrical circuits related to lift safety must adopt redundant design (dual-channel); (4) Emergency electric operation: manual hand-winding operation must be provided with a safety switch to prevent misoperation; (5) Passenger protection in car: new requirements for in-car emergency alarm devices and five-party intercom. The new code imposes higher requirements on lift control systems, requiring SIL (Safety Integrity Level) assessment of safety-related electrical control systems.
Lift Supervision Inspection Regulations (TSG T7001-2023)
TSG T7001-2023 "Regulations for Lift Supervision Inspection and Periodic Inspection" was issued and implemented in 2023, comprehensively revising lift inspection requirements. Main changes: (1) Inspection classification: adjusted from manufacturing supervision inspection and installation supervision inspection to three categories: manufacturing supervision inspection, installation supervision inspection and periodic inspection; (2) Manufacturing supervision inspection: added verification requirements for type test certificates of new safety functions such as UCMP devices, door circuit detection and electrical safety circuit redundancy; (3) Installation supervision inspection: added functional inspection of passenger safety facilities such as emergency alarm devices (five-party intercom), video surveillance and in-car communication signal coverage; (4) Periodic inspection interval: passenger lifts once per year (twice per year for those in service over 15 years); before inspection, the maintenance unit must complete self-inspection and issue a self-inspection report; (5) Handling of non-conforming inspection: lifts with a non-conforming inspection conclusion shall be immediately stopped from use and re-inspected after rectification. Hotel lift management must strictly follow TSG T7001 requirements to formulate annual inspection plans, book inspections one month in advance, and post the inspection conformity mark in a prominent position inside the car.
Fire Lift Design Code Requirements
According to Article 7.3 of GB 50016-2014 "Code for Fire Protection Design of Buildings", Class I high-rise hotel buildings must be equipped with fire lifts. Technical requirements for fire lifts: (1) Quantity: at least 1 unit per fire compartment; Class II high-rise hotels with a building height exceeding 32 m also require fire lifts; (2) Rated load: not less than 800 kg (insufficient for transporting firefighter equipment; design at 1,000 kg or above is recommended); (3) Speed: travel time from the first floor to the top floor not exceeding 60 s (i.e., select sufficient speed based on building height); (4) Fire protection requirements: independent lift shaft (not shared with passenger lifts), shaft wall fire resistance rating not less than 2 h, landing door fire resistance rating not less than 1 h (Class A fire door); (5) Power supply requirements: dual-circuit power supply (drawn from two separate substations), with end switching time not exceeding 5 s; (6) Fire control: in fire mode, the lift automatically returns to the first floor (or designated floor), opens its doors and ceases normal service; after the fire switch is activated, it is manually controlled by firefighters. Fire lifts should also serve as passenger lifts (normally operating as ordinary passenger lifts, automatically switching to fire operation mode in case of fire).
Accessible Lift and Special Function Requirements
According to Article 3.9 of GB 50763-2012 "Code for Accessibility Design", hotel buildings shall be equipped with accessible lifts. Technical requirements: (1) Quantity: at least 1 accessible lift, preferably provided independently from passenger lifts; (2) Car dimensions: car depth not less than 1.8 m (stretcher can enter horizontally), width not less than 1.6 m, door width not less than 0.9 m; (3) Control panel: button height 0.9-1.1 m, buttons with Braille markings, voice floor announcement in the car; (4) Handrails: stainless steel handrails (diameter 35-40 mm) on three sides of the car; (5) Arrival reminder: audible prompts and illuminated arrival indicators at landings. In addition, hotel lifts should meet the following special functions: (1) Hospital bed lift (if medical use is required): car depth not less than 2.7 m, width not less than 1.8 m; (2) Observation lift: glass car and shaft glass must use tempered laminated safety glass (thickness not less than 12 mm); (3) Explosion-proof lift (if hazardous goods transport is required): explosion-proof electrical components and sealed control cabinets. Hotel lift design should reserve interface conditions for these special functions.