Content and acceptance criteria for hotel fire protection system linkage commissioning
I am fire protection expert Alexander Li. Integrated commissioning of a hotel's fire protection systems is a critical step in ensuring that all subsystems work together in the event of a fire, and it directly affects the safety of occupant evacuation and the effectiveness of fire control. Based on my years of engineering experience, integrated commissioning is not only a technical verification but also a comprehensive check of design intent and construction quality. Acceptance criteria must strictly follow the requirements of GB50016 Code for Fire Protection Design of Buildings and GB50261 Code for Construction and Acceptance of Automatic Sprinkler Systems, among others.
Main Content of Integrated Commissioning
Integrated commissioning covers interface testing between the automatic fire alarm system and all fire protection facilities, specifically including:
1. Automatic fire alarm system triggering: Simulate smoke detector, heat detector or manual call point signals to activate the logic controller (e.g., GB50116 Code for Construction and Acceptance of Automatic Fire Alarm Systems, Clause 4.3.2).
2. Fire pumps and sprinkler system: After the alarm signal is triggered, the sprinkler pump should start automatically (GB50261 Clause 8.0.3), and status should be fed back via the pressure switch.
3. Smoke control and exhaust system: In accordance with GB50016 Clause 8.5.1, the exhaust fans, supply fans and fire dampers in the corresponding areas should be started in linkage, and the air-conditioning system should be shut down.
4. Evacuation indication and emergency lighting: Cut off non-fire-protection power supplies and activate emergency lighting and evacuation indication signs (GB50016 Clause 10.3.1).
5. Fire compartmentation facilities: Fire shutter doors and fire doors should close automatically (e.g., shutters descending to the floor, in accordance with GB50016 Clause 6.5.1).
6. Gas extinguishing system: In areas such as equipment rooms, doors and windows should be closed in linkage, power should be cut off, and extinguishing agent should be released (GB50370 Code for Design of Gas Extinguishing Systems, Clause 5.0.5).
7. Fire broadcast and elevators: Activate the fire broadcast to guide evacuation, and force elevators to descend to the ground floor and stop operating (GB50016 Clause 7.3.4).
Acceptance Criteria
Acceptance is based on GB50261, GB50166 Code for Construction and Acceptance of Automatic Fire Alarm Systems, etc., with key points including:
- Logic correctness: Each trigger signal must activate the corresponding equipment according to the design logic, with no omissions or false activations. For example, the sprinkler pump start time should be ≤2 minutes (GB50261 Clause 8.0.8).
- Time response: From alarm to equipment start, fire pumps ≤55 seconds, smoke control and exhaust fans ≤30 seconds (GB50116 Clause 4.3.2).
- Equipment status feedback: All linked equipment must display actuation status on the graphic display device in the fire control room (GB50166 Clause 5.1.7).
- Redundancy and reliability: Manual/automatic switching functions must work properly, and backup power supply must provide continuous power for ≥30 minutes (GB50016 Clause 10.1.5).
- System linkage testing: At least 3 full-system tests must be conducted, and acceptance is only permitted if there are no faults (GB50261 Clause 8.0.11).
Practical Engineering Case
In a five-star hotel project, during integrated commissioning a logic error was found in the linkage between the smoke exhaust fan and the fire damper: after the alarm, the fire damper did not close, resulting in reduced smoke exhaust efficiency. In accordance with GB50016 Clause 8.5.1, we re-adjusted the control module wiring and added linkage test points. After rectification, the system passed the fire acceptance inspection on the first attempt, and all response times were kept within the standard.
In summary, integrated commissioning of a hotel's fire protection systems must cover all core subsystems, and acceptance should be based on code clauses to ensure compliance in logic, timing and reliability. The above are reference opinions. The actual project situation still needs to be further comprehensively evaluated and implemented in combination with specific operating conditions, site conditions and other factors.