Attribution of fire-power monitoring, electrical-fire monitoring, and fire-door monitoring systems: fire-service nature and calibers under the three systems of fire acceptance, construction-quality acceptance, and cost division

Topic Positioning

The attribution calibers of fire-power monitoring, electrical-fire monitoring, and fire-door monitoring across management systems: "fire" or "weak current"? Conclusion first: all three are companion subsystems of the FAS and inherently fire (colloquially "fire electrical"); "weak current" is only a name from construction-quality acceptance division and trade-organization habit, not changing their fire nature. The dispute arises because the systems attach them differently by context; they must be understood per context.

Core Conclusions

1. System pedigree and fire regulation: fire.

• DBJ/T 15-248-2022 Code for Fire Construction Quality Acceptance of Buildings, Clause 8.1.1: "The automatic fire alarm system includes electrical-fire monitoring, fire-door monitoring, fire-shutter monitoring, fire-equipment power monitoring and other subsystems."
• GB 50116-2013 devotes Chapter 9 "electrical fire monitoring system": Clause 9.1.2 "the system shall consist of some or all of: 1 electrical fire monitoring controller; 2 residual-current electrical fire detectors; 3 temperature-measuring detectors"; Clause 6.11.3 "fire-door monitors shall follow the installation requirements of fire alarm controllers."
• GB 55036-2022 General Code for Fire Protection Facilities, Clause 12.0.14: "The electrical fire monitoring system shall be independent; its detectors shall not affect normal operation of the local power distribution system."
• GB 51348-2019 Clause 13.3.8: "Buildings with fire control rooms shall have a fire-power monitoring system", with monitors in the fire control room monitoring fire-power status and alarming on fault; monitoring points preferably at the dedicated fire-equipment main/standby busbars in substations or fire-power cabinets, at the transfer-switch outgoing ends of important fire equipment (fire control room, pumps, elevators, smoke exhaust fans, non-centralized emergency lighting, fire shutters, etc.), at the output of EPS units without patrol function, and at the 24 V DC outputs feeding linkage equipment without patrol function.
• Fire acceptance attribution: DB11/T 2000-2022 Clause 10.4.3 checks, under "fire electrical and fire alarm systems", the categories, locations, specifications, quantities, and installation quality of electrical-fire monitoring equipment and fire-power monitors, and tests display, fault alarm, silence, reset, self-check; DBJ41/T 323-2025 Clause 15.9.1 includes fire-door monitoring in on-site fire-acceptance assessment (locations, types, host and monitor positions, product quality documents).
• Administratively: MOHURD Order No. 51 (Interim Provisions on Fire Design Review and Acceptance Management) requires the employer to accept all fire-related divisional/item works — these systems are all within fire acceptance.

2. Source of the "weak current" label: the construction-quality acceptance system. GB 50300 Unified Standard for Constructional Quality Acceptance of Building Engineering places the fire alarm system as a sub-division of the intelligent-building division, followed by DBJ/T 15-248-2022 Clause 8.1.1 ("this chapter applies to quality inspection and acceptance of the fire alarm system sub-division within the intelligent-building division"). That is, acceptance paperwork runs "intelligent-building division -> fire alarm sub-division", and "intelligent building" is the usual weak-current/intelligent system — hence the label. That standard's division integrates GB 50166, GB 50261, GB 50354 and covers the on-site assessment content of the Fire Design Review and Acceptance Working Rules (Jian Ke Gui [2020] No. 5).

3. Cost-division caliber: under "fire electrical system". SJG 77-2020 Standard for Divisional and Measure-Project Division of Cost Documents for Building Works, Clause 6.6.3: "The fire electrical system should include the automatic fire alarm system, fire-equipment power monitoring system, fire-door monitoring system, and electrical fire monitoring system", with contents: the alarm system covers installation and commissioning of alarm control panels, broadcast panels, linkage devices, detectors, alarms, fire broadcast, modules, and conduit/wiring; power and door monitoring each cover their equipment and conduit/wiring; electrical-fire monitoring covers monitors, in-panel modules, detectors, and conduit/wiring. Component-level exception: fire-door magnetic switches belong to the access-control system (Clause 6.5.6); signal modules and signal lines of large-space automatic water extinguishing, gas, and foam systems connected to the fire monitoring center belong to fire electrical.

One-line conclusion: under fire design, fire acceptance, and cost division, all three are "fire" (costing: "fire electrical"); "weak current" stems only from the acceptance-division and trade habits, not changing their fire nature.

Applicable Boundaries

• Attribution must be used per system context: fire review/acceptance per the fire codes (GB 50116, GB 55036, GB 51348, local acceptance standards); construction inspection per GB 50300's four-level division; cost BOQs per local division standards.
• Regional applicability: DBJ/T 15-248-2022 (Guangdong), DB11/T 2000-2022 (Beijing), DBJ41/T 323-2025 (Henan), SJG 77-2020 (Shenzhen) — cross-region projects follow local standards; GB series are national.
• Component-level attribution has local differences and exceptions (e.g., fire-door magnetic switches under access control per SJG 77-2020); system-level conclusions do not automatically apply to single components/items.
• This card resolves trade attribution only, not equipment selection or parameter computation (detector/monitor-point counts, monitor setting — see the design codes).

Further Reading

• DBJ/T 15-248-2022 Clauses 8.1.1 and 3.2.2 (Table 3.2.2 divisional/sub-divisional/item division and notes)
• GB 50116-2013 Chapter 9 (9.1.2 composition), Clause 6.11.3 (fire-door monitors)
• GB 55036-2022 Clause 12.0.14
• GB 51348-2019 Clause 13.3.8
• DB11/T 2000-2022 Clause 10.4.3; DBJ41/T 323-2025 Clause 15.9.1
• SJG 77-2020 Clauses 6.6.3 and 6.5.6
• Interim Provisions on Fire Design Review and Acceptance Management (MOHURD Order No. 51); Fire Design Review and Acceptance Working Rules (Jian Ke Gui [2020] No. 5)