Calculator
Oxygen Pipeline Sizing Calculator
Estimate peak oxygen flow and approximate pipe internal diameter from outlet count, diversity, flow per outlet, and velocity limit.
Calculator Inputs
Legend
Oxygen Pipeline Sizing Calculator guidance
Peak flow = outlets x flow per outlet x diversity. Pipe diameter is estimated from flow velocity using circular pipe area.
Input meaning
- Number of outlets: enter the measured, quoted, or hospital-approved value.
- Flow per outlet: enter the measured, quoted, or hospital-approved value in L/min.
- Simultaneous-use diversity: enter the measured, quoted, or hospital-approved value in %.
- Maximum gas velocity: enter the measured, quoted, or hospital-approved value in m/s.
Result interpretation
- Use the result as a planning estimate, not as a final approval by itself.
- Record the assumptions used so Procurement, Biomedical, Facilities, Finance, and vendors can review the same basis.
Assumptions
- Medical gas pipeline sizing must follow HTM/NFPA/local standards and qualified engineering design.
- Pressure drop, simultaneous demand tables, pipe material, zone valves, alarms, and terminal unit standards are simplified here.
Biomedical use
- Use this calculator during RFQ preparation, technical evaluation, acceptance planning, service review, or biomedical workload planning.
How to identify the required values
Use these examples and common working ranges to choose values from gauges, labels, manuals, datasheets, RFQs, service reports, CMMS records, or hospital planning assumptions.
| Field | Example value | Common range | Tip |
|---|---|---|---|
| Number of outlets | Example: 1. | Use installed or planned outlets; apply diversity separately for simultaneous demand. | Use planned installed outlets, then apply diversity for simultaneous use. |
| Flow per outlet | Example: 10 L/min. | Usually 0.1 L/min or higher; use the real hospital value. | Use the actual set flow or expected average flow for the clinical scenario. |
| Simultaneous-use diversity | Example: 50 %. | Medical gas preliminary planning often uses 25-75%, depending on department and standard. | Use the department's expected simultaneous-use factor. |
| Maximum gas velocity | Example: 10 m/s. | Use local medical gas design standards; 5-15 m/s is a common early planning check. | Use local medical gas design rules for final sizing. |
Common ranges are starting points for hospital planning. For final procurement, acceptance testing, electrical design, medical gas design, radiation shielding, dialysis water systems, or clinical use, replace the example values with site-specific data and vendor-confirmed figures.
Input Checklist
Confirm these values before relying on the output for procurement, PM, or service planning.
- Number of outlets
- Flow per outlet
- Diversity factor
- Maximum velocity
Safety And Engineering Notes
Use calculator outputs as planning estimates and verify critical systems with calibrated measurement or qualified engineering review.
- Medical gas pipeline sizing must follow HTM/NFPA/local standards and qualified engineering design.
- Pressure drop, simultaneous demand tables, pipe material, zone valves, alarms, and terminal unit standards are simplified here.
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