MEP Design for a Hospital: NABH, Medical Gases, Isolation and Power Redundancy

MEP design for a hospital starts with the clinical brief, then sets design conditions department by department. Operation theatres, ICUs and isolation rooms need controlled air, medical gases need a primary and an alternate source, and life-saving equipment needs uninterrupted power. The 2026 building standards add fire compartments and refuge provisions. NABH is an accreditation, so the national standards and your clinical planner supply the numbers.

What does the design basis look like department by department?

The Indian Public Health Standards (IPHS) 2022 for sub-district and district hospitals are the most explicit government source for room conditions. They are written for public facilities, so use them as a benchmark rather than a mandate for a private hospital. The table gathers the conditions that drive HVAC, gas and power sizing.

How do NABH and the codes fit together?

Three documents carry most of the weight. IPHS 2022 gives room conditions and the medical gas pipeline approach. The DGHS Hospital Manual of April 2025 asks for centralised piped medical gases including oxygen and central suction in theatres, alternate sources of gas that are checked at intervals, an identified isolation room with appropriate environmental controls in intensive care, and monitoring of theatre temperature, humidity and air circulation. The National Building Construction Standards 2026, Part F, cover fire and life safety for hospitals, which the services must be designed around.

NABH is separate. It accredits hospitals against standards it publishes, and we have not reproduced its clauses here. Use the government standards for the numbers, then check the NABH edition current at your application date for the processes the services must support, such as infection control, emergency power and gas supply continuity. Your fire approval, Electrical Inspector sanction and pollution board consents sit alongside; our design and approvals page describes how we coordinate them.

What does the medical gas system need?

IPHS describes the pipeline as a way of delivering medical and anaesthetic gases, vacuum and compressed air from the source to a terminal unit at the point of use. Oxygen comes from a storage tank or a generation plant using pressure swing adsorption technology. The design decisions are:

• Primary source and alternate. The cylinder manifold acts as the alternate and emergency source if the generation plant or tank fails, and the Hospital Manual asks that alternate sources be checked regularly.
• Manifold room. A defined area, cool and clean, built of fire-resistant materials with non-conductive flooring and adequate ventilation, with separate places for full and empty cylinders.
• Pipework and outlets. Seamless copper with flux-less silver brazing, and delivery points colour-coded to the referenced international conventions.
• Routing. Dedicated shafts. The 2026 standards ask for a dedicated, separate shaft for medical gas pipelines, utility services and electrical services on hospital refuge terraces, and the same discipline helps everywhere.
• Zoning and monitoring. Alarms and pressure monitoring by area, so a fault in one wing does not become a hospital-wide event.

How should power continuity be designed?

IPHS asks for uninterrupted electric supply in the theatre and critical care units, voltage regulation against fluctuation, and a monitored neutral-to-earth voltage that should not exceed 5 volts. The 2026 building standards go further for tall hospitals: refuge terraces serving patients on ventilators need medical gas, a separate electrical shaft and dedicated UPS and DG back-up for life-saving equipment. A workable design is built in layers:

• Two independent utility sources where the DISCOM can provide them, with automatic changeover.
• A DG plant sized for essential loads, with fuel storage and a tested start sequence.
• UPS for the loads that cannot tolerate even the changeover gap, typically theatres, ICU monitoring and critical IT.
• Separate essential and non-essential distribution boards, so load shedding is by design rather than by trip.
• Isolated power arrangements and earthing in theatres and critical care, to the medical-location electrical standard your consultant applies.

The sizing sequence matters: the clinical list of life-saving equipment comes first, then the load schedule, then the DG and UPS ratings. Starting from a DG rating and working back risks putting critical loads on the wrong board.

Where do MEP and fire safety meet?

The 2026 standards require progressive horizontal evacuation in hospitals: patients move through a fire-resistant wall into an adjoining compartment at the same level, and each compartment must hold its own patients and those from the adjoining one. Compartment doors close automatically and are held open electromagnetically. That sets the MEP agenda. Fire doors need alarm-linked hold-open power, ducts and pipes crossing compartment walls need fire-rated penetrations, and a positive-pressure theatre must coexist with a smoke control strategy. Our MEPF cost calculator is a first-pass check on scope, and the fire fighting systems page covers the suppression side.

How Secured Engineers helps

MEP design for healthcare is a coordination exercise, and we run it in-house: HVAC, electrical, plumbing and fire design are produced by one team, so shafts, plant rooms and ceiling voids are resolved on the same drawings. Fire NOC and CEIG filings are prepared in-house, and MEPF and solar can sit under one contract. We work from offices in Noida (Delhi NCR) and Ludhiana, across 535+ projects in 18+ states, with 89.77% repeat clients.

If you already have a hospital design from an architect or another consultant, send it for a technical review: we will check the departmental design basis, gas arrangement, power layers and fire interfaces and list the gaps. Open the design and approvals service, then message us on WhatsApp, call +91 70099 85817, or request a free proposal.