---
title: "Tank"
industry: "Electrical Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:TANK"
  data_integrity_hash: "e8840b67a175963d95a03ce4cf0b2b8d"
  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:TANK"
  data_source_uri: "https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/tank.md"
  official_resource_url: "https://cnfx.com/industry/electrical-equipment-manufacturing/product/tank"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-1.5 bar gauge pressure"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 2.0
    unit: "bar"
    consequence: "Von Mises yield criterion failure due to hoop stress exceeding ASTM A36 steel yield strength of 250 MPa at 2.0 bar pressure differential"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Partial discharge exceeding 100 pC at 50 Hz causing oil decomposition"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Installation of Buchholz relay with gas accumulation detection at 150 cm³ threshold"
  - node_2:
      trigger: "Corrosion rate exceeding 0.1 mm/year due to sulfur content &gt;0.2% in insulating oil"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Application of 300 μm epoxy-phenolic coating with dielectric strength &gt;15 kV/mm"
bom_nodes:
  tank-body:
    type: "component"
    urn: "URN:CNFX:ME:TANK_BODY"
    interface_type: "physical-logic-coupled"
  flanges:
    type: "component"
    urn: "URN:CNFX:ME:FLANGES"
    interface_type: "physical-logic-coupled"
  lifting-lugs:
    type: "component"
    urn: "URN:CNFX:ME:LIFTING_LUGS"
    interface_type: "physical-logic-coupled"
  drain-valve:
    type: "part"
    urn: "URN:CNFX:ME:DRAIN_VALVE"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "EN 14015:2004 - SPECIFICATION FOR THE DESIGN AND MANUFACTURE OF SITE BUILT, VERTICAL, CYLINDRICAL, FLAT-BOTTOMED, ABOVE GROUND, WELDED, STEEL TANKS FOR THE STORAGE OF LIQUIDS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/tank.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "eed299ba75c0d534163a2eb914ed47dbe55e237e0247da11176aec1c320b3bf8"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Tank

## 1. Technical Definition
The sealed container that houses the transformer core, windings, and insulating oil in a power transformer.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-1.5 bar gauge pressure**. Failure boundary: **2.0 bar internal pressure differential causing permanent deformation of steel walls exceeding 0.2% strain**, Mechanism: **Von Mises yield criterion failure due to hoop stress exceeding ASTM A36 steel yield strength of 250 MPa at 2.0 bar pressure differential**.

### 2.1 Analytical Physics Model
Governed by the **Thin-Wall Pressure Vessel Stress Analysis**:

> **Primary Equation**: $\sigma_h = \frac{P \cdot D}{2t}$  
> **Engineering Impact**: Determines the hoop stress boundary to prevent rupture.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| P | Internal Pressure | Engineering Constant |
| D | Diameter | Engineering Constant |
| t | Wall Thickness | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Partial discharge exceeding 100 pC at 50 Hz causing oil decomposition | 8 | Gas bubble formation leading to dielectric breakdown at 15 kV/mm | Installation of Buchholz relay with gas accumulation detection at 150 cm³ threshold |
| Corrosion rate exceeding 0.1 mm/year due to sulfur content &gt;0.2% in insulating oil | 8 | Wall thickness reduction below minimum 6 mm causing structural failure at 1.8 bar | Application of 300 μm epoxy-phenolic coating with dielectric strength &gt;15 kV/mm |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Drain Valve](https://cnfx.com/llms/industry/rubber-and-plastic-product-manufacturing/product/drain-valve.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Transformer Core Winding Machine**, **Vacuum Oil Filling System**, **Transformer Testing Equipment**  
**Downstream Applications**: Power Distribution Transformer, Step-Up/Step-Down Transformer, Instrument Transformer  

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

### Q: What materials are used for transformer tanks in electrical equipment manufacturing?
**A**: Transformer tanks are typically constructed from carbon steel or stainless steel, chosen for their durability, corrosion resistance, and ability to safely house transformer components and insulating oil.

### Q: What are the key components included in a transformer tank BOM?
**A**: A standard transformer tank bill of materials includes the tank body, flanges for connections, lifting lugs for safe handling, and a drain valve for maintenance and oil changes.

### Q: Why is a sealed tank important for power transformers?
**A**: A sealed tank is crucial to protect the transformer core, windings, and insulating oil from environmental contaminants, moisture, and oxidation, ensuring reliable operation and extending the transformer's lifespan.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- EN 14015:2004 - SPECIFICATION FOR THE DESIGN AND MANUFACTURE OF SITE BUILT, VERTICAL, CYLINDRICAL, FLAT-BOTTOMED, ABOVE GROUND, WELDED, STEEL TANKS FOR THE STORAGE OF LIQUIDS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Tank](https://cnfx.com/industry/electrical-equipment-manufacturing/product/tank)**

### 🌐 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**: TANK | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 4107c0a4
