Modular OR Process Step 7: On-Site Installation & Rapid Assembly

Published Oct 29, 2026 · Operating-Room.com Editorial Team

Introduction

Installation is where the modular method's speed advantage becomes visible. With panels already cut, insulated, sealed and pre-wired in the factory, the site phase is assembly rather than construction: Eucalyptus calls it "rapid assembly and guidance," providing simplified procedures, installation manuals and videos, on-site installation and online technical support. MECART markets its field system as a "Hook and Seal assembly" — pre-engineered panels with utilities and openings already in place make site work "clean and quick," optionally executed by the client's own crew under a factory supervisor. This article describes the on-site sequence and the choices a hospital faces in staffing it.

Site Readiness Before the Crew Arrives

Rapid assembly assumes the shell is ready. The pre-installation checklist covers:

• Levelled, cleaned slab within agreed tolerance; floor markings for wall tracks; permanent or temporary weather enclosure.
• Interfaces at the boundary points: power terminated at the agreed isolator, chilled/hot water and drains available, medical-gas roughing in place, network points live.
• Dust and infection-control partitions separating live hospital areas, with the required construction hygiene airlock if the facility is operating.
• Laydown and unpacking space, hoist or forklift access, and the crate manifest reconciled (step 6).

The Erection Sequence

1. Setting out. Wall tracks are anchored to the floor slab and, where designed, to structure above, using the surveyed reference lines. Coved vinyl or welded sheet flooring is typically laid up to or up the panel base, depending on the sealing detail.
2. Wall panels. Panels rise in numbered order, each one located on the track and locked to its neighbour with the cam/screw joint system; internal and external radius-corner pieces create smooth, cleanable coves. The joints are sealed with the specified low-VOC sealant — the same emissions discipline required in the factory.
3. Ceiling system. Ceiling panels connect into a carrier grid and seal against the wall heads ("a secure transition between wall and ceiling panels"). Laminar-flow ceiling modules, return-air grilles and light panels are set as ceiling units rather than built in place.
4. Doors and glazing. Hermetic sliding doors and automatic sensor doors are hung in pre-fitted frames, commissioned for dual-sided foot sensing and infrared anti-pinch protection; view windows and lead-glazed units go into factory openings.
5. Embedded fitments. Stainless cabinets, scrub and hand-wash sinks, writing desks, information panels, pass-through boxes and wardrobes slot into the cavities prepared for them — no chasing of finished walls.
6. Services hook-up. Pre-wired circuits connect to the distribution board; socket outlets, gas terminal boxes, controllers and low-voltage systems are terminated; the HVAC unit, ductwork and dampers connect to the room's supply and return plenums.
7. Finishing. Protective film comes off last; seams and penetrations receive final sealant, flooring is welded and coved, and the room is deep-cleaned before balancing begins.

Who Installs: Three Models

Suppliers generally offer a choice agreed at contract stage:

• Full vendor installation. The manufacturer's crew erects and connects the system — the most predictable option for a turnkey international project and the one Eucalyptus describes as on-site installation backed by online assistance.
• Supervised assembly. The hospital's or contractor's trades provide labor while a factory supervisor directs the sequence — MECART's "your own staff with a MECART supervisor" model, which transfers knowledge and controls cost.
• Remote guidance. Detailed manuals and videos plus online engineering support for experienced local partners; viable where distance or travel constraints rule out a flying crew.

The choice affects safety obligations too: MECART flags that field assembly can carry "expensive health and safety requirements," needs installation space and takes "a couple of days" longer than dropping in a pre-assembled module — typically a good trade inside a working hospital, where not interrupting operations matters more than a single day.

Coordination With Other Trades

The modular supplier owns the envelope but rarely owns the whole floor. Daily coordination is needed with the general contractor (structural and fire stopping), HVAC subcontractor (duct and refrigerant interfaces), medical-gas installer, electrical contractor, low-voltage/AV integrator and the hospital's facilities team. A single installation manager running a shared schedule prevents the classic failures: a pendant boom delivered before its slab anchor, or commissioning starting before gas lines are certified. In the documented Changsha general-surgery project, standardized construction management and close cooperation among all parties were credited with on-time delivery through design, installation and commissioning.

Conclusion

On site, a modular OR is assembled like a well-documented machine: tracks, numbered panels, ceiling modules and pre-fitted doors come together cleanly and quietly in days rather than months of wet trades. Pick the installation model that matches your local resources, prepare interfaces before day one, and keep one manager over all trades. When the doors close for the last time, the room is ready to be tested — step 8 covers commissioning and validation.

Previous: Step 6 — Packaging, Shipping & Logistics · Next: Step 8 — Commissioning, Testing & Validation. Sources: MECART — Field assembly options; Eucalyptus — rapid assembly & guidance service; Eucalyptus — Changsha project case.