---
title: "Fume Extraction System"
industry: "Fabricated Metal Product Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:FUME_EXTRACTION_SYSTEM"
  data_integrity_hash: "87d07c56cf92345e5ecfd3f117b5d36e"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:FUME_EXTRACTION_SYSTEM"
  data_source_uri: "https://cnfx.com/llms/industry/fabricated-metal-product-manufacturing/product/fume-extraction-system.md"
  official_resource_url: "https://cnfx.com/industry/fabricated-metal-product-manufacturing/product/fume-extraction-system"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-2.0 m/s capture velocity at hood face, 15-30 m/s duct velocity, -250 to -500 Pa static pressure at fan inlet"
    unit: "m³/h"
engineering_limits:
  max_safe_operating_point:
    value: 15
    unit: "m"
    consequence: "Bernoulli principle violation at low velocities reduces capture efficiency; Stokes' law governs particulate settling when drag forces insufficient; Darcy-Weisbach equation describes pressure drop across clogged filters"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Filter media pore size exceeding 5 μm nominal rating"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install HEPA filters with 99.97% efficiency at 0.3 μm particle size"
  - node_2:
      trigger: "Fan motor bearing lubrication degradation below ISO VG 32 viscosity"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement automatic grease injection system with 0.5 mL/hour feed rate"
bom_nodes:
  extraction-hoodarm:
    type: "part"
    urn: "URN:CNFX:ME:EXTRACTION_HOODARM"
    interface_type: "physical-logic-coupled"
  centrifugal-fanblower:
    type: "part"
    urn: "URN:CNFX:ME:CENTRIFUGAL_FANBLOWER"
    interface_type: "physical-logic-coupled"
  filtration-unit:
    type: "part"
    urn: "URN:CNFX:ME:FILTRATION_UNIT"
    interface_type: "physical-logic-coupled"
  ductwork:
    type: "part"
    urn: "URN:CNFX:ME:DUCTWORK"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 21904-1:2020 - HEALTH AND SAFETY IN WELDING AND ALLIED PROCESSES - PART 1: REQUIREMENTS FOR WELDING FUMES EXTRACTION EQUIPMENT"
    scope: "Verified Engineering Specification"
  - standard: "ANSI Z9.2-2018 - FUNDAMENTALS GOVERNING THE DESIGN AND OPERATION OF LOCAL EXHAUST VENTILATION SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "DIN EN 16985:2018 - SPRAY BOOTHS FOR ORGANIC COATING MATERIALS - SAFETY REQUIREMENTS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/fabricated-metal-product-manufacturing/product/fume-extraction-system.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "e407fffce62fc1c320da2d6c3728144634551a7112765f580e4a3190bfc55908"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Fume Extraction System

## 1. Technical Definition
A ventilation system designed to capture and remove hazardous welding fumes and particulates from the work environment.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-2.0 m/s capture velocity at hood face, 15-30 m/s duct velocity, -250 to -500 Pa static pressure at fan inlet**. Failure boundary: **Duct velocity below 15 m/s causes particulate settling; hood face velocity below 0.3 m/s fails to capture fume plume; filter differential pressure exceeding 1500 Pa indicates clogging**, Mechanism: **Bernoulli principle violation at low velocities reduces capture efficiency; Stokes' law governs particulate settling when drag forces insufficient; Darcy-Weisbach equation describes pressure drop across clogged filters**.

### 2.1 Analytical Physics Model
Governed by the **Darcy-Weisbach Pressure Drop**:

> **Primary Equation**: $\Delta P = f \cdot \frac{L}{D} \cdot \frac{\rho v^2}{2}$  
> **Engineering Impact**: Critical for sizing CIP (Clean-In-Place) pump heads.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| f | Friction Factor | Engineering Constant |
| L | Pipe Length | Engineering Constant |
| v | Velocity | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Filter media pore size exceeding 5 μm nominal rating | 8 | Submicron particulate penetration through filter media | Install HEPA filters with 99.97% efficiency at 0.3 μm particle size |
| Fan motor bearing lubrication degradation below ISO VG 32 viscosity | 8 | Ball bearing seizure at 120°C operating temperature | Implement automatic grease injection system with 0.5 mL/hour feed rate |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | m³/h | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Extraction Hood/Arm](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/extraction-hoodarm.md) `(Standalone System)`
- [Centrifugal Fan/Blower](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/centrifugal-fanblower.md) `(Standalone System)`
- [Filtration Unit](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/filtration-unit.md) `(Standalone System)`
- [Ductwork](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/ductwork.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Welding Power Source**, **Compressed Air System**, **Dust Collection Filter Media**  
**Downstream Applications**: Structural Steel Beams, Metal Cabinets and Enclosures, Automotive Chassis Components  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What materials are best for fume extraction systems in metal fabrication?
**A**: Galvanized steel offers durability and corrosion resistance for ductwork, while aluminum provides lightweight options for extraction arms. Stainless steel is ideal for high-temperature or corrosive environments in filtration units.

### Q: How does a centrifugal fan improve fume extraction efficiency?
**A**: Centrifugal fans in fume extraction systems create high-pressure airflow to effectively capture and transport welding fumes through ductwork to filtration units, ensuring consistent performance even with long duct runs common in metal fabrication facilities.

### Q: What filtration is needed for welding fume extraction?
**A**: Welding fume extraction systems typically use multi-stage filtration including pre-filters for large particles and HEPA or cartridge filters for sub-micron particulates. Proper filtration protects both worker health and equipment longevity in metal manufacturing environments.

## 6. Manufacturing Compliance
- ISO 21904-1:2020 - HEALTH AND SAFETY IN WELDING AND ALLIED PROCESSES - PART 1: REQUIREMENTS FOR WELDING FUMES EXTRACTION EQUIPMENT
- ANSI Z9.2-2018 - FUNDAMENTALS GOVERNING THE DESIGN AND OPERATION OF LOCAL EXHAUST VENTILATION SYSTEMS
- DIN EN 16985:2018 - SPRAY BOOTHS FOR ORGANIC COATING MATERIALS - SAFETY REQUIREMENTS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Fume Extraction System](https://cnfx.com/industry/fabricated-metal-product-manufacturing/product/fume-extraction-system)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: FUME_EXTRACTION_SYSTEM | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 18bc9b4f
