---
title: "Storage Tank"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:STORAGE_TANK"
  data_integrity_hash: "02887d94dd5c4850c3ae559ff5f52ce5"
  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:STORAGE_TANK"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/storage-tank.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/storage-tank"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-2.0 bar (10-200 kPa) working pressure, -10°C to 40°C temperature range"
    unit: "L"
engineering_limits:
  max_safe_operating_point:
    value: 275
    unit: "MPa"
    consequence: "Hydrogen-induced cracking from cathodic protection overvoltage exceeding -1.2 V vs. Ag/AgCl reference electrode, or brittle fracture below ductile-to-brittle transition temperature of -29°C"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Sulfate-reducing bacteria metabolic activity producing H₂S at &gt;0.1 ppm concentration"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "316L stainless steel cladding with 3.0 mm minimum thickness and biocide injection system"
  - node_2:
      trigger: "Water hammer pressure surge exceeding 5.0 bar from sudden valve closure in 0.2 seconds"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Surge arrestor with 100 ms response time and ASME Section VIII Div. 1 reinforcement pads at nozzle junctions"
bom_nodes:
  inlet-port:
    type: "component"
    urn: "URN:CNFX:ME:INLET_PORT"
    interface_type: "physical-logic-coupled"
  outlet-valve:
    type: "part"
    urn: "URN:CNFX:ME:OUTLET_VALVE"
    interface_type: "physical-logic-coupled"
  level-sensor:
    type: "part"
    urn: "URN:CNFX:ME:LEVEL_SENSOR"
    interface_type: "physical-logic-coupled"
  vent:
    type: "component"
    urn: "URN:CNFX:ME:VENT"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 28300:2008 (PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - SHELL-AND-TUBE HEAT EXCHANGERS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/storage-tank.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "f032cdb4937fdf4b7d33d5f1113a2eb4678a1304de6fca707a2bbeb2110b6526"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Storage Tank

## 1. Technical Definition
Container for holding liquid fertilizer in a precision injection system

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-2.0 bar (10-200 kPa) working pressure, -10°C to 40°C temperature range**. Failure boundary: **Yield stress of 275 MPa for carbon steel (ASTM A36) at 2.5 bar internal pressure, or stress corrosion cracking at chloride concentration &gt;50 ppm**, Mechanism: **Hydrogen-induced cracking from cathodic protection overvoltage exceeding -1.2 V vs. Ag/AgCl reference electrode, or brittle fracture below ductile-to-brittle transition temperature of -29°C**.

### 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 |
| :--- | :--- | :--- | :--- |
| Sulfate-reducing bacteria metabolic activity producing H₂S at &gt;0.1 ppm concentration | 8 | Microbiologically influenced corrosion penetrating 0.5 mm/year through tank wall | 316L stainless steel cladding with 3.0 mm minimum thickness and biocide injection system |
| Water hammer pressure surge exceeding 5.0 bar from sudden valve closure in 0.2 seconds | 8 | Longitudinal seam weld fatigue failure at stress concentration factor Kt=3.2 | Surge arrestor with 100 ms response time and ASME Section VIII Div. 1 reinforcement pads at nozzle junctions |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Outlet Valve](https://cnfx.com/llms/industry/food-manufacturing/product/outlet-valve.md) `(Standalone System)`
- [Level Sensor](https://cnfx.com/llms/industry/chemical-manufacturing/product/level-sensor.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Precision Injection Pump**, **Fertilizer Mixing System**, **Automated Control Panel**  
**Downstream Applications**: Precision Fertilizer Injection Systems, Agricultural Irrigation Equipment, Liquid Fertilizer Distribution Systems  

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

### Q: What materials are best for corrosive liquid fertilizer storage?
**A**: Stainless steel offers excellent corrosion resistance for most fertilizers, polyethylene is ideal for chemical compatibility, and fiberglass reinforced plastic provides durability with chemical resistance at a lower cost than stainless.

### Q: How does the level sensor work in these fertilizer tanks?
**A**: The level sensor provides real-time monitoring of fertilizer volume, typically using ultrasonic, float, or pressure-based technology to ensure accurate dosing in precision injection systems and prevent empty tank conditions.

### Q: What maintenance is required for fertilizer storage tanks?
**A**: Regular inspection of inlet/outlet connections, cleaning to prevent residue buildup, checking vent functionality to prevent pressure issues, and verifying level sensor accuracy. Material-specific care includes checking polyethylene for UV degradation and stainless steel for corrosion.

## 6. Manufacturing Compliance
- ISO 28300:2008 (PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - SHELL-AND-TUBE HEAT EXCHANGERS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Storage Tank](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/storage-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**: STORAGE_TANK | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: ae6d4744
