Atomic Definition
Fire inspection: The process by which the fire department conducts on-site inspections, functional tests, and issues a certification of compliance for completed fire facilities, based on the "Code for Fire Protection Technology for Buildings."Background
| Stage | Key Documents | Main Department | Notes |
|---|---|---|---|
| "Fire Design Description" + "Fire System Layout" | Design Institute/Technical Department of the Manufacturer | Must comply with the Vietnam Fire Department of General (FDI) "Fire Prevention Design Guidelines" |
| "Fire Review Opinion" | Local Fire Department (e.g., Municipal Fire Brigade) | On-site review + technical assessment, usually 10-15 working days |
| "Construction Drawing Review Certificate" | Construction主管部门 | Concurrently processed with construction permit |
| On-site wiring, equipment installation | General Contractor, Fire Construction Team | Concurrent with security low-voltage wiring, avoid redundant excavation |
| "Fire System Commissioning Report" | Fire Construction Unit | Includes alarm, sprinkler, smoke exhaust, and linkage testing |
| "Fire Completion Inspection Report" + "Certificate of Compliance" | Fire Department | Must pass on-site functional testing to be put into use |
Core Analysis
1. Technical Points of Fire-Security Interfaces
| Interface | Typical Equipment (Example) | Data/Signal Type | Common Issues | Checkpoints to Prevent Rework |
|---|---|---|---|---|
| Alarm-Access Control | Hikvision DS-K1A Fire Alarm Controller → Hikvision iVMS-4200 Access Control Controller | Relay closure / 485 data frame | Alarm triggering fails to unlock or mistakenly lock access control | Check relay terminal connection and communication protocol matching (Modbus/RS-485) |
| Alarm-Broadcast | Dahua DHI-AIC-A1 Acoustic Optical Alarm → On-site PA Speaker | 24 V relay signal | Acoustic optical alarm fails to trigger synchronously | Confirm that the alarm controller output terminal corresponds to the contact point of the PA amplifier |
| Alarm-Video | Dahua NVR (DS-NVR-X) → Surveillance Camera (Hikvision DS-2CD2xxx) | Event linkage (ONVIF) | Fire alarm linkage image fails to switch or delay >5 s | Configure "Fire Alarm Linkage" event in the NVR, verify the camera preset position and switching time |
| Access Control-Evacuation Guidance | Access Control Controller → LED Evacuation Guidance Lights | 24 V switch | Evacuation guidance lights fail to change with access control status | Check the output mapping table of the access control controller to ensure that the corresponding exit access control matches the indicator light |
2. Conflict Points of Construction Process Interleaving
- Pipe Laying Sequence
- Equipment Positioning Conflict
- On-site Debugging Synchronization
3. Correspondence between Inspection Documents and On-site Conditions
| Document | On-site Corresponding Items | Common Causes of Rework |
|---|---|---|
| "Fire System Layout" | Actual pipeline routing, valve location | On-site modifications not updated in the drawings, resulting in "drawings and on-site conditions do not match" |
| "Security System Wiring List" | Terminal numbering of each cable | Terminal numbering misplaced, resulting in linkage logic errors |
| "Linkage Logic Flow Chart" | Event configuration in control center software | The flow chart does not cover all evacuation exits, and there are blind spots in on-site monitoring |
| "Equipment Factory Certificate of Conformity" | Equipment model, serial number | On-site use of different batches of firmware, resulting in protocol mismatch |
4. Review Focus of Local Fire Department (Taking Vietnam Fire Brigade for Reference)
- System Integrity: All alarm points, manual alarm buttons, and sprinkler valves must be visible on-site and fully labeled.
- Linkage Function: It is necessary to demonstrate on-site "fire alarm → unlock access control → start broadcast → switch video" in person.
- Evacuation Channel Monitoring: At least one 1080p or higher, night vision camera must be configured for each main channel, and the camera view angle must cover all exit doors.
- Complete Documentation: Design review approval, construction drawing review qualification certificate, system debugging report, linkage test records, and personnel training records.
Practical Recommendations
| Number | Recommendation | Key Execution Steps | Reference Products (Examples) |
|---|---|---|---|
| 1 | Pre-compile the "System Interface List" | ① Organize security and fire technical responsible persons to sort out interface points before fire design review; ② List using Excel with "device-port-signal type-remark"; ③ Submit with design drawings for review. | Hikvision DS-K1A, Dahua NVR, iVMS-4200 |
| 2 | Layered piping, fire isolation | ① Reserve the bottom layer of fire cables, use 1.5 mm² aluminum-core fire cables; ② Lay security cables (Cat6, PoE) on the upper layer, use fire sleeves; ③ Set a fire isolation box (fire rating ≥1 h) every 30 m. | Refer to Hikvision industrial fire sleeve specification table |
| 3 | Unified configuration of linkage logic and on-site verification | ① Create "Fire Alarm Linkage" scenario in the control platform (Hikvision Smart PSS); ② Configure access control unlocking, PA playback, camera preset position; ③ Use on-site simulator to trigger fire alarm, record response time ≤0.5 s. | Smart PSS, Dahua Smart IPC |
| 4 | Establish a "drawings-list-actual" three-party verification table on-site | ① Spot check 10% of points; ② Compare "Fire System Layout" with "Security Wiring List"; ③ Record discrepancies immediately and submit a revised version within 2 days. | As per actual project |
| 5 | Arrange cross-inspection windows | ① Negotiate with the fire department to establish a "security linkage" special inspection window; ② Complete all linkage function on-site demonstration 2 days before fire completion inspection; ③ Obtain linkage qualification signature before submitting the fire qualification certificate. | Refer to GLOBAL SECURITYEXPORT project process |
Conclusion Outlook
The fire inspection of Vietnam factories is no longer a single fire prevention check but an integrated assessment with security subsystems such as access control, broadcast, and video. By focusing on four key links: pre-positioning interface list, layered piping, unified linkage configuration, and on-site three-party verification, it can meet the review requirements of the local fire department while significantly reducing rework rates and post-maintenance costs. In the future, with Vietnam's policy tilt towards smart parks, integrated security and fire platforms (such as Hikvision Smart PSS) will become the standard delivery form, and enterprises should lay out platform management in advance to achieve higher compliance and operational efficiency.Comparison Table
| Dimension | Traditional Separate Inspection Model | Integrated Security and Fire Inspection Model |
|---|---|---|
| Approval Sequence | Fire first, security second, two on-site inspections | Concurrent submission of fire-security linkage review, unified on-site demonstration |
| Rework Probability | About 30% (experience value, subject to actual project) | ≤10% (experience value, subject to actual project) |
| Inspection Cycle | 30-45 days | 20-30 days |
| Operation Cost | Post-maintenance needs to handle two systems separately | Unified platform maintenance, operation and maintenance labor reduced by about 20% (subject to actual project) |
Frequently Asked Questions
Frequently Asked Questions
Q1: What is the method used for the linkage signal between the fire system and access control? A: The conventional method is to use both. The core alarm (such as the fire detector) drives the unlocking output of the access control controller directly through a 24 V relay to ensure that safe evacuation can still be achieved in case of network failure; at the same time, configure event linkage based on Modbus/RS-485 or ONVIF in the platform (Smart PSS) to realize information sharing and remote monitoring.
Q2: If the field camera view cannot cover all evacuation channels, how should it be rectified? A: First, use thermal imaging cameras (such as Hikvision DS-2TD2617) to detect blind spots and confirm whether there are personnel stranded; if there is a blind spot, add at least one 1080p night vision camera to the channel, ensuring that the image coverage is ≥95%. After the rectification, resubmit the "Linkage Logic Flow Chart" and demonstrate on-site.
Q3: Must all security systems be debugged before the fire completion inspection? A: It is not necessary to complete all work, but all subsystems involving fire linkage (access control, broadcast, monitoring) must complete functional linkage debugging and pass the on-site demonstration. Other non-linkage functions (such as parking lot vehicle license plate recognition) can be completed in subsequent stages.
Q4: How to quickly correct the common "drawings and on-site conditions do not match" during rework? A: Use the method of on-site photography + BIM update to immediately annotate the actual location on the drawings and generate a PDF revised version; then upload it to the project management system and notify the review department, which can be completed within 2 days.
Q5: Is it necessary to provide an independent power supply for each fire alarm point? A: According to the Vietnam Fire Technology Guidelines, all fire detectors should be connected to independent 24 V DC UPS (capacity based on the number of detection points x 5 W, with a margin of 20%), ensuring that they can still work normally in the event of a power failure.
This article is based on the practical experience of GLOBAL SECURITYEXPORT in more than 30 park projects in Southeast Asia, and the specific implementation details should be adjusted in accordance with the latest guidance of the local fire department.