---
title: "Rupture Disc"
industry: "Chemical Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:RUPTURE_DISC"
  data_integrity_hash: "558075c5ef6d902410624ac427250723"
  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:RUPTURE_DISC"
  data_source_uri: "https://cnfx.com/llms/industry/chemical-manufacturing/product/rupture-disc.md"
  official_resource_url: "https://cnfx.com/industry/chemical-manufacturing/product/rupture-disc"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-1000 bar"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 21
    unit: "°C"
    consequence: "Exceeding the material's ultimate tensile strength (e.g., 316L stainless steel: 485 MPa yield, 620 MPa tensile) causing plastic deformation and fracture initiation at stress concentration points"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Corrosion-induced wall thinning (e.g., chloride stress corrosion cracking in 316L SS at &gt;60°C with &gt;50 ppm chlorides)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Material substitution to Hastelloy C-276 for chloride service, or nickel plating with minimum 0.1 mm thickness"
  - node_2:
      trigger: "Creep deformation from sustained operation at &gt;80% of burst pressure at elevated temperature (&gt;150°C for carbon steel)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Installation of vacuum supports for full vacuum rating, or selection of graphite rupture discs for high-temperature applications (&gt;400°C)"
bom_nodes:
  disc-membrane:
    type: "component"
    urn: "URN:CNFX:ME:DISC_MEMBRANE"
    interface_type: "physical-logic-coupled"
  holderflange-assembly:
    type: "part"
    urn: "URN:CNFX:ME:HOLDERFLANGE_ASSEMBLY"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
url: "https://cnfx.com/llms/industry/chemical-manufacturing/product/rupture-disc.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "d09075489398ad312f852c3bfa4e620c46f53d237cd263b116dfeb6889f7ca4f"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Rupture Disc

## 1. Technical Definition
A non-reclosing pressure relief device designed to burst at a predetermined pressure to protect equipment from overpressure.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-1000 bar**. Failure boundary: **Burst pressure tolerance ±2% of rated burst pressure at 21°C**, Mechanism: **Exceeding the material's ultimate tensile strength (e.g., 316L stainless steel: 485 MPa yield, 620 MPa tensile) causing plastic deformation and fracture initiation at stress concentration points**.

### 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 |
| :--- | :--- | :--- | :--- |
| Corrosion-induced wall thinning (e.g., chloride stress corrosion cracking in 316L SS at &gt;60°C with &gt;50 ppm chlorides) | 8 | Premature rupture at 70-80% of rated burst pressure | Material substitution to Hastelloy C-276 for chloride service, or nickel plating with minimum 0.1 mm thickness |
| Creep deformation from sustained operation at &gt;80% of burst pressure at elevated temperature (&gt;150°C for carbon steel) | 8 | Gradual bulging leading to rupture at 90-95% of rated burst pressure | Installation of vacuum supports for full vacuum rating, or selection of graphite rupture discs for high-temperature applications (&gt;400°C) |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Holder/Flange Assembly](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/holderflange-assembly.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Pressure Testing System**, **Laser Marking Machine**, **Leak Detection System**  
**Downstream Applications**: Chemical Reactors, Storage Tanks, Pipeline Systems  

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

### Q: What materials are best for rupture discs in corrosive chemical environments?
**A**: For corrosive chemical applications, Hastelloy and graphite rupture discs offer excellent corrosion resistance. Inconel is preferred for high-temperature corrosive environments, while composite materials provide chemical compatibility for specific aggressive media.

### Q: How do I determine the correct burst pressure for a chemical process rupture disc?
**A**: Burst pressure should be set 10-25% above normal operating pressure but below the maximum allowable working pressure (MAWP) of protected equipment. Consider factors like pressure spikes, temperature effects on material strength, and process media compatibility when specifying.

### Q: What maintenance is required for rupture discs in chemical manufacturing?
**A**: Rupture discs require regular inspection for corrosion, fatigue, or damage. Replace discs after activation or according to manufacturer recommendations. Ensure proper installation torque on holder/flange assemblies and verify gasket integrity during maintenance cycles.

## 6. Manufacturing Compliance

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Rupture Disc](https://cnfx.com/industry/chemical-manufacturing/product/rupture-disc)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **2** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: RUPTURE_DISC | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 46fa254f
