---
title: "Vessel/Container"
industry: "Chemical Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:VESSELCONTAINER"
  data_integrity_hash: "bca6674a6a9426f74c313927fdd023f6"
  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:VESSELCONTAINER"
  data_source_uri: "https://cnfx.com/llms/industry/chemical-manufacturing/product/vesselcontainer.md"
  official_resource_url: "https://cnfx.com/industry/chemical-manufacturing/product/vesselcontainer"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-25 bar (gauge pressure)"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 28.5
    unit: "bar"
    consequence: "Yield strength degradation of ASME SA-516 Grade 70 carbon steel at elevated temperature (150°C reduces yield strength from 260 MPa to 215 MPa), combined with stress concentration at nozzle-to-shell junctions (Kt=2.8)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Chloride-induced stress corrosion cracking (Cl-SCC) from residual chloride contamination in feedwater exceeding 25 ppm"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Post-weld heat treatment (PWHT) at 620°C for 2 hours per ASME Section VIII, plus chloride monitoring with automatic system shutdown at 20 ppm"
  - node_2:
      trigger: "Cyclic thermal stress from 40°C feedwater temperature differential during regeneration cycles"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Finite element analysis-optimized thermal stress relief grooves and Inconel 625 weld overlay at critical junctions"
bom_nodes:
  upper-distributor:
    type: "part"
    urn: "URN:CNFX:ME:UPPER_DISTRIBUTOR"
    interface_type: "physical-logic-coupled"
  lower-collector:
    type: "component"
    urn: "URN:CNFX:ME:LOWER_COLLECTOR"
    interface_type: "physical-logic-coupled"
  manway:
    type: "part"
    urn: "URN:CNFX:ME:MANWAY"
    interface_type: "physical-logic-coupled"
  support-grid:
    type: "component"
    urn: "URN:CNFX:ME:SUPPORT_GRID"
    interface_type: "physical-logic-coupled"
  sight-glass:
    type: "part"
    urn: "URN:CNFX:ME:SIGHT_GLASS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "PED 2014/68/EU - PRESSURE EQUIPMENT DIRECTIVE"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/chemical-manufacturing/product/vesselcontainer.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "a1d269ff3c32dd1d555b869bb479b1ccfd6ddfc82069e3f48f38555f483f1687"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Vessel/Container

## 1. Technical Definition
The pressure vessel that houses the ion exchange resin bed, providing structural containment and flow management.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-25 bar (gauge pressure)**. Failure boundary: **28.5 bar internal pressure at 150°C operating temperature**, Mechanism: **Yield strength degradation of ASME SA-516 Grade 70 carbon steel at elevated temperature (150°C reduces yield strength from 260 MPa to 215 MPa), combined with stress concentration at nozzle-to-shell junctions (Kt=2.8)**.

### 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 |
| :--- | :--- | :--- | :--- |
| Chloride-induced stress corrosion cracking (Cl-SCC) from residual chloride contamination in feedwater exceeding 25 ppm | 8 | Through-wall crack propagation at heat-affected zones of circumferential welds | Post-weld heat treatment (PWHT) at 620°C for 2 hours per ASME Section VIII, plus chloride monitoring with automatic system shutdown at 20 ppm |
| Cyclic thermal stress from 40°C feedwater temperature differential during regeneration cycles | 8 | Low-cycle fatigue crack initiation at resin bed support plate attachment welds | Finite element analysis-optimized thermal stress relief grooves and Inconel 625 weld overlay at critical junctions |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Upper Distributor](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/upper-distributor.md) `(Standalone System)`
- [Manway](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/manway.md) `(Standalone System)`
- [Sight Glass](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/sight-glass.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Ion Exchange Resin Regeneration System**, **High-Pressure Chemical Feed Pump**, **Automated Control and Monitoring System**  
**Downstream Applications**: Purified Chemical Solutions, Deionized Water, High-Purity Process Chemicals  

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

### Q: What materials are recommended for corrosive chemical applications in these vessels?
**A**: For corrosive environments, Stainless Steel 316L offers excellent chemical resistance, while Fiberglass Reinforced Plastic (FRP) provides superior corrosion resistance for acidic or alkaline processes. Carbon steel with protective linings is cost-effective for less aggressive chemicals.

### Q: How does the upper distributor and lower collector improve ion exchange efficiency?
**A**: The upper distributor ensures even flow distribution across the resin bed, preventing channeling and maximizing contact time. The lower collector efficiently gathers treated effluent while retaining resin particles, optimizing exchange capacity and reducing pressure drop.

### Q: What maintenance features are included in the vessel design?
**A**: Design includes a manway for safe resin replacement and internal inspection, a support grid to prevent resin loss during backwashing, and a sight glass for visual monitoring of resin bed condition and flow patterns without system shutdown.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- PED 2014/68/EU - PRESSURE EQUIPMENT DIRECTIVE

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Vessel/Container](https://cnfx.com/industry/chemical-manufacturing/product/vesselcontainer)**

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

> **Reference ID**: VESSELCONTAINER | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: d5d090f7
