Medical Gas System Design
Design is where a system's capacity and lifetime behaviour are decided. We start from the real departmental requirement — terminal unit counts, gas types and diversity — and build source selection, pipe sizing, isolation points and alarm coverage on top of it, so the construction package can be executed, approved and later tested without field guesswork.
What the design covers
- Terminal unit take-off per department and per gas
- Load calculation and diversity assessment
- Source selection: liquid tank, generator or cylinder manifold
- Pipe sizing and distribution routing
- Isolation valve and area AVSU locations
- Alarm panel and sensor coverage
- Source room, ventilation and access requirements
- Drawings, bills of quantities and material specification
Technical reference
We design to the reference approved for the project — such as NFPA 99 or HTM 02-01 and the requirements of the authorities concerned. All technical values (pressures, sizes, capacities) come from that project's approved design, not from generic figures.
Design for extensions and existing systems
For an existing facility we start with a survey of the installed network and an estimate of its remaining capacity before proposing any extension, so a new area is not loaded onto a source that cannot carry it. Survey findings are documented within the design deliverable.
Deliverables
- Distribution and terminal unit drawings
- Load calculations and source selection
- Material and equipment specification
- Bills of quantities
- Isolation and alarm schematic
- Downstream testing and commissioning requirements
Where this service applies
- Hospitals
- Medical centres and clinics
- Day-surgery centres
- Intensive care units
- Operating theatres
- Care and recovery facilities
Related technical articles
What Are Medical Gas Systems?
An engineering overview of a hospital Medical Gas System: sources, pipeline, control and terminal units.
Medical Gas Pipeline Design
A design methodology for the Medical Gas Pipeline: from load calculation and zoning to routing and isolation points.
Medical Oxygen Systems
Medical Oxygen sources — cylinders and manifolds, liquid oxygen tanks and generators — and how the right source is selected for a facility.
Frequently asked questions
When should the medical gas designer join the project?
As early as possible. Source room location, pipeline routes and service risers affect architectural and structural design, and changing them later is expensive.
Is design available as a standalone service?
Yes. Design can be delivered on its own or within an integrated scope covering supply, installation, testing and maintenance.
Have a project or an existing facility that needs an engineering review?
Our engineering team can review your requirement and propose a solution suited to the application, the site and the applicable requirements.