I. General Provisions
1.1 Purpose of Preparation
To standardize the installation of holographic fans, clearance adjustment, power wiring, and public space layout operations; to eliminate safety hazards such as equipment falls, mechanical injuries, electrical leakage/short circuits, and fire hazard obstructions; and to establish unified, simple, and practical on-site safety inspection standards that ensure both equipment safety and personnel passage safety.
1.2 Scope of Application
This service covers the installation, relocation, modification, acceptance inspection, and daily safety patrols of holographic fans in all public spaces such as supermarkets, exhibition halls, retail stores, and stations.
1.3 Core Principles
Check before construction; verify upon completion; rectify all identified hazards; ensure zero-defective operation throughout the entire process; prioritize personnel safety and fire safety compliance.
II. Core Security Checklist (Simplified Practical Version)
2.1 Equipment Installation Safety Check List
This phase conducts a basic inspection of equipment fixation, component quality, and structural stability to eliminate mechanical safety hazards such as drop damage or loosening. The specific inspection criteria are as follows:
1. External inspection of the device: The casing and blades show no damage, cracks, or loosening; the imaging LEDs and wiring interfaces are intact, with no signs of aging, detachment, or damage.
2. Installation component inspection: Brackets, fixing screws, expansion bolts, and other components must be intact, meet the required load-bearing capacity, and show no deformation or corrosion. The use of inferior or non-standard replacement components is strictly prohibited.
3. Installation base inspection: The wall and ceiling framework must be solid and secure, with no risk of loosening or collapse; lightweight walls or gypsum board walls must be reinforced with pad plates, and direct equipment fixation is prohibited.
4. Equipment fixation inspection: All fixing screws are fully tightened with anti-loosening washers; the unit shows no shaking, tilting, or displacement; the floor-standing equipment base is stable with no potential risk of tipping over.
5. Safety Inspection: Holographic fans installed in public areas must be equipped with comprehensive protective accessories such as fall prevention ropes and safety nets, and must be securely mounted. Operation of bare units is strictly prohibited.
2.2 Special Inspection Checklist for Safety Gaps
All clearance standards are mandatory safety regulations, primarily designed to prevent pedestrian contact injuries, equipment operational collisions, and obstruction of firefighting facilities. The specific inspection requirements are as follows:
1. Personal safety clearance: When the equipment installation height is below 2.5 meters, the safety distance between the rotating edge and pedestrian activity areas shall be no less than 80 cm; when the installation height is 2.5 meters or above, the safety clearance shall be no less than 30 cm.
2. Equipment and Facility Distance: The distance between the rotating blades of the equipment and surrounding fixed facilities such as walls, glass surfaces, columns, lighting fixtures, and billboards shall be no less than 20 cm. During operation, there should be no friction, collision, or scraping between the equipment and these facilities.
3. Spacing between multiple devices: When multiple devices are installed side by side, the distance between the outer edges of each device's rotation shall be no less than 50 cm, ensuring no airflow interference or resonance vibration to prevent mutual operational interference.
4. Fire safety clearance: The distance between equipment and fire protection facilities such as fire hydrants, smoke detectors, sprinkler heads, emergency indicator lights, and fire escape routes shall be no less than 1 meter, with complete unobstructed access to facilitate firefighting operations and emergency evacuation.
5. Low-altitude installation specifications: The minimum installation height for equipment on public pedestrian passages shall not be less than 2.5 meters; where this height requirement cannot be met, a fully enclosed protective mesh must be installed, accompanied by conspicuous safety warning signs.
2.3 Power Supply Cabling Safety Inspection Checklist
Standardize power wiring construction specifications to comprehensively eliminate electrical safety hazards such as leakage current, short circuits, overload, and line damage. The specific inspection criteria are as follows:
1. Wire specification inspection: All wires shall be flame-retardant pure copper wires compliant with national standards. The cross-sectional area of power cables for a single device shall not be less than 0.75 mm², and that of main cables for multiple devices connected in parallel shall not be less than 1.5 mm². The use of aged, damaged, or privately spliced wires is strictly prohibited.
2. Wire connection inspection: All wiring connections are secure and tight, with no loose connections, slack wires, or exposed copper conductors; the neutral wire, live wire, and ground wire are clearly distinguished; all connection points are properly insulated and sealed, with no exposed live parts.
3. Power protection inspection: Each device should be independently equipped with a residual current device (RCD) and an air switch, with an RCD operating current ≤30 mA; multiple devices must not share unprotected sockets, and series connection of power supplies on power strips is prohibited.
4. Circuit protection inspection: Wiring should be laid horizontally and vertically in an orderly manner; flame-retardant conduits or cable trays must be installed for wall and ceiling wiring. Floor wiring should provide protection against trampling and compression, with no exposed wires or strained connections.
5. Grounding insulation inspection: The metal equipment casing and mounting brackets are reliably grounded with proper grounding; the overall insulation performance meets specifications, with no leakage current or static electric discharge observed on the equipment.
6. Environmental compatibility inspection: The equipment's power supply voltage must remain stable within the rated operating range; in humid or outdoor environments, waterproof power supplies and waterproof connectors shall be used, with proper moisture-proof, waterproof, and corrosion-resistant treatments applied.
2.4 Special Inspection Checklist for Public Space Installations
For public venues with high pedestrian traffic such as supermarkets, exhibition halls, and stations, priority shall be given to ensuring passage safety, compliance with urban appearance standards, and emergency safety. The specific inspection requirements are as follows:
1. Traffic safety inspection: The equipment is installed in a reasonable location, does not occupy or obstruct public evacuation routes, safety exits, or main pedestrian passages, and features no protruding structures that hinder normal pedestrian or cart movement.
2. Warning sign inspection: Equipment installed at low altitudes or in high-traffic areas must display prominent safety warnings stating "Rotating equipment – No touching." Special emphasis should be placed on enhancing protection and signage in children's activity zones.
3. Visual safety inspection: The imaging brightness and strobe frequency of the equipment should be appropriate, with no excessive glare or high-frequency strobing; installation is prohibited at critical locations such as elevator entrances and corridor corners to prevent driver distraction, dizziness, or collision accidents.
4. Equipment stability inspection: The equipment demonstrates excellent resistance to disturbances, showing no violent shaking, abnormal noises, displacement or loosening under pedestrian traffic or light breeze conditions, with no resonance risks.
5. Operational and maintenance environment inspection: Equipment wiring is clean and orderly, with no tangled or piled-up wires; equipment ventilation openings are completely unobstructed, with sufficient space reserved for maintenance and heat dissipation.
6. Emergency compatibility inspection: The equipment can be quickly powered off and disassembled, ensuring no obstruction to emergency rescue operations or personnel evacuation during failures or fire emergencies.
III. Trial Operation and Acceptance Specifications
3.1 Trial Operation Requirements
After complete installation and wiring of the equipment, a continuous trial run of at least 30 minutes shall be conducted to verify compliance with the following standards: The equipment operates smoothly without vibration, abnormal noise, or displacement; neither the unit nor its wiring exhibits heating, sparking, or leakage; there are no collisions or interference during operation; imaging is clear and normal, with no abnormal flickering or screen blackouts.
3.2 Acceptance Criteria
All aforementioned safety inspection items have been fully compliant; the equipment's trial operation revealed no safety hazards. Formal commissioning may proceed only after confirmation by the authorized personnel through signature. Items failing inspection must be immediately shut down for rectification; re-inspection shall be conducted upon completion of corrections, and acceptance delivery is permitted only upon passing verification. Operation of equipment with defects is strictly prohibited.
IV. Daily Maintenance and Safety Precautions
4.1 Inspection Frequency
Daily inspections shall be conducted to monitor the operational status of equipment, as well as the stability of lines and aircraft structures; a comprehensive safety inspection covering all items shall be performed monthly; immediate specialized safety re-inspections shall be carried out following equipment relocation, maintenance, or exposure to vibration/fierce wind conditions.
4.2 Safety Contraindications
During operation, manual contact with rotating parts, pulling of wiring, or disassembly of components is strictly prohibited. Before performing maintenance, cleaning, or corrective work, the power supply must be disconnected and operations initiated only after complete cessation of fan rotation. Unauthorized modification of wiring, removal of protective devices, or reduction of safety clearance is forbidden. Upon detecting any hazards such as equipment loosening, electrical leakage, abnormal noises, or excessive heating, immediate shutdown and power interruption are required for rectification.
V. Simple Emergency Response
1. If the equipment exhibits severe shaking, loosening, or displacement: Immediately cut off power and shut down the system, promptly evacuate nearby personnel, reinforce the equipment, and conduct a comprehensive re-inspection. The system may only be restarted after confirming the absence of hazards.
2. Circuit overheating, sparking, or equipment leakage: Immediately disconnect the main power supply; do not touch any equipment or wiring. Investigate potential short circuits or wiring faults, replace damaged cables, and retest them before reuse.
3. In case of accidental injury due to personnel error: Immediately shut down the equipment and cut off power, provide prompt assistance to the injured personnel, and conduct a comprehensive inspection and rectification of potential safety hazards related to equipment protection and clearance.
4. Fire emergency scenario: The main power supply to the equipment can be quickly切断, with the overall layout ensuring no obstruction of firefighting facilities or hindrance to personnel evacuation and emergency rescue operations.