---
title: "Mast / Derrick"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:MAST_DERRICK"
  data_integrity_hash: "70f6ba13e64a900601f857063f26a63c"
  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:MAST_DERRICK"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/mast-derrick.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/mast-derrick"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-1.5 MN (meganewtons) vertical load capacity, 0-0.3 MN lateral load capacity, 0-40 m/s wind speed tolerance"
    unit: "m"
engineering_limits:
  max_safe_operating_point:
    value: 345
    unit: "MPa"
    consequence: "Stress concentration at welded joints exceeding fatigue limit of 207 MPa at 1e6 cycles, lateral-torsional buckling under combined bending and compression loads"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Cyclic loading at 0.2-0.5 Hz frequency exceeding 1e7 cycles"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Post-weld heat treatment to 620°C for stress relief, ultrasonic peening for compressive residual stress of -300 MPa"
  - node_2:
      trigger: "Wind-induced vortex shedding at 0.8-1.2 Hz matching natural frequency"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Tuned mass dampers with 2% critical damping ratio, helical strakes with 0.12D pitch and 0.1D height"
bom_nodes:
  legs:
    type: "component"
    urn: "URN:CNFX:ME:LEGS"
    interface_type: "physical-logic-coupled"
  crown-block:
    type: "part"
    urn: "URN:CNFX:ME:CROWN_BLOCK"
    interface_type: "physical-logic-coupled"
  guy-wires:
    type: "component"
    urn: "URN:CNFX:ME:GUY_WIRES"
    interface_type: "physical-logic-coupled"
  walkways-and-platforms:
    type: "part"
    urn: "URN:CNFX:ME:WALKWAYS_AND_PLATFORMS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 4309:2017 - CRANES - WIRE ROPES - CARE, MAINTENANCE, INSTALLATION, EXAMINATION AND DISCARD"
    scope: "Verified Engineering Specification"
  - standard: "DIN 15018-1:1984 - CRANES; PRINCIPLES FOR STEEL STRUCTURES; STRESS ANALYSIS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/mast-derrick.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "567de6e380e287ba914e63bdfc7f40ad77ee94ac605bcdba3451313aee8edb5e"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Mast / Derrick

## 1. Technical Definition
Vertical structural framework on a workover rig that supports the hoisting system and provides height for pipe handling operations.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-1.5 MN (meganewtons) vertical load capacity, 0-0.3 MN lateral load capacity, 0-40 m/s wind speed tolerance**. Failure boundary: **Material yield strength exceedance at 345 MPa for ASTM A572 Grade 50 steel, Euler buckling critical load threshold at 0.85 MN for 30m height with 0.8m base diameter**, Mechanism: **Stress concentration at welded joints exceeding fatigue limit of 207 MPa at 1e6 cycles, lateral-torsional buckling under combined bending and compression loads**.

### 2.1 Analytical Physics Model
Governed by the **Frame Structural Deflection Analysis**:

> **Primary Equation**: $\delta = \frac{5 q L^4}{384 E I}$  
> **Engineering Impact**: Ensures structural stability for multi-stage machines.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| q | Uniform Load | Engineering Constant |
| E | Elastic Modulus | Engineering Constant |
| I | Moment of Inertia | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Cyclic loading at 0.2-0.5 Hz frequency exceeding 1e7 cycles | 8 | Fatigue crack propagation from weld toe at heat-affected zone | Post-weld heat treatment to 620°C for stress relief, ultrasonic peening for compressive residual stress of -300 MPa |
| Wind-induced vortex shedding at 0.8-1.2 Hz matching natural frequency | 8 | Resonant vibration amplitude exceeding 150 mm peak-to-peak | Tuned mass dampers with 2% critical damping ratio, helical strakes with 0.12D pitch and 0.1D height |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Crown Block](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/crown-block.md) `(Standalone System)`
- [Walkways and Platforms](https://cnfx.com/llms/industry/other-transport-equipment-manufacturing/product/walkways-and-platforms.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Drawworks**, **Traveling Block**  
**Downstream Applications**: Workover Rig, Drilling Rig, Well Servicing Unit  

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

### Q: What is the primary function of a mast/derrick in machinery manufacturing?
**A**: The mast/derrick serves as a vertical structural framework on workover rigs that supports the hoisting system and provides the necessary height for efficient pipe handling operations during drilling and maintenance activities.

### Q: What materials are used in manufacturing industrial masts/derricks?
**A**: Industrial masts/derricks are constructed from high-strength structural steel to ensure durability, load-bearing capacity, and resistance to harsh operational environments in machinery and equipment manufacturing.

### Q: What are the key components included in a mast/derrick bill of materials?
**A**: A standard mast/derrick BOM includes the crown block, guy wires for stabilization, structural legs, and walkways/platforms for safe access and maintenance during rig operations.

## 6. Manufacturing Compliance
- ISO 4309:2017 - CRANES - WIRE ROPES - CARE, MAINTENANCE, INSTALLATION, EXAMINATION AND DISCARD
- DIN 15018-1:1984 - CRANES; PRINCIPLES FOR STEEL STRUCTURES; STRESS ANALYSIS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Mast / Derrick](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/mast-derrick)**

### 🌐 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**: MAST_DERRICK | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 5e1363d6
