Engineering works in hospitals that cannot close

The method we use in hotels that stay open, applied to the harder case: a building where patients can't be moved like guests and some systems keep people alive. Every works zone starts with an infection control risk assessment, and nothing clinical is shut down without a permit the hospital signs.

  • ICRA before any works
  • Shutdowns only under a signed permit
  • Hospitals, clinics and medical centres
Works zone in an occupied wardPlan, not to scale · numbers explained below
CORRIDOR · OCCUPIED NURSE STATION CLEAN UTILITY 1 2 3 4 5 6 7
  1. Works zone, kept at negative pressure to the corridor
  2. Anteroom: workers clean down and change before leaving
  3. Sticky mat at the anteroom door
  4. HEPA-filtered negative-air unit, exhausting outside
  5. Sealed barrier, floor to structural slab
  6. Pressure monitor at the barrier, read and logged
  7. Occupied patient rooms: doors closed, no works traffic
CT-07ICRA containment · exampleClass set by the ICRAIllustrative

Who it's for

For the people who answer for a building that never empties

CORETECH is a new company and our track record is in method, not in hospital projects. This page sets out how we would work in your building, so you can judge the method before you meet us.

  • Hospital owners and operators

    A clear view of what the engineering systems need, priced and phased around clinical activity.

  • Facility and biomedical engineering heads

    A contractor who writes method statements and permits in your format and stops when your team says stop.

  • Private hospital groups

    One way of assessing and reporting across several sites, so capital can be compared building to building.

  • Clinics and medical centres

    Works planned around clinic hours, with smaller plant and the same discipline on infection control.

Why hospitals are harder than hotels

A hotel can move a guest to another floor. A hospital often can't move a patient at all.

How the same engineering question differs in a hotel and in a hospital
QuestionIn a hotelIn a hospital
Can we empty the area?Rooms come off sale; guests moveOnly if the clinical team can move patients safely; often the work goes around them
What does dust do?Causes complaintsCan carry fungal spores to patients with weak immunity
What does a shutdown cost?Comfort and revenueSome systems are life-critical: ventilators, oxygen, theatre air
What happens in a fire?Guests evacuateMany patients are protected in place behind smoke compartments, so those walls and doors must stay intact during the works
Who decides?General manager and ownerClinical decisions stay with the hospital's clinical teams, infection prevention and facility management

How we work in an occupied hospital

Containment first, then the work

Each step names who agrees it. We plan, contain and build; the hospital's infection prevention and clinical teams decide what is acceptable around their patients.

  • Infection control risk assessment (ICRA)

    Before any works, the type of work and the patient risk of the areas around it are assessed together. The result sets the containment class and the precautions for that zone, and is reviewed again if the scope or the neighbouring areas change.

    Agreed withInfection prevention and control, facility management

  • Dust containment and negative-pressure zones

    Barriers sealed from floor to slab, an anteroom where the class requires it, and HEPA-filtered negative-air units so air flows into the works zone, never out of it. The pressure is read at the barrier and logged each shift.

    Agreed withInfection prevention and control

  • Clean routes, sticky mats and clean-down

    Sticky mats at every exit, debris moved covered along agreed routes and times, never through clinical areas in use, and HEPA vacuuming and damp wiping before a zone is handed back.

    Agreed withInfection prevention, environmental services

  • Sequenced around theatres and ICUs

    The programme is built from the theatre lists and ICU census, not the other way round. Work next to or above a critical area waits for the window the hospital gives it.

    Agreed withTheatre and ICU managers, nursing leadership

  • Night and weekend windows

    Noisy, vibrating or shutdown work goes into windows the hospital agrees in writing, with a named clinical contact on site for each one.

    Agreed withHospital management, clinical leads

  • Daily coordination

    A short daily check with infection prevention, facility management and the area's nurse in charge: what was done, what changes tomorrow, and anything that needs the work to stop.

    Who can stop the workThe hospital, at any time

Critical systems

The systems that can't simply be switched off

For each one: what we look at, and the rule we keep when we work on it.

  • NFPA 99 · IEC 60364-7-710

    Essential electrical system

    • Life-safety, critical and equipment branches traced and labelled
    • Generators and automatic transfer switches (ATS) load-tested
    • UPS for critical areas checked against what it actually carries
  • HTM 02-01 · ISO 7396-1 · NFPA 99

    Medical gas pipeline systems

    • Oxygen, medical air, vacuum and anaesthetic gas scavenging (AGSS)
    • Shutdowns only under a permit agreed with clinical engineering, with temporary supply in place first
    • Tested and certified before reconnection to patients
  • ASHRAE/ASHE 170 · HTM 03-01

    Ventilation for theatres, isolation and ICU

    • Pressure relationships kept: theatres positive, airborne isolation rooms (AIIR) negative, protective environment (PE) rooms positive
    • Air changes and filtration measured before and after
    • No air handler serving a critical area is stopped without the hospital's written window
  • HTM 04-01

    Water safety and Legionella

    • Dead legs created by the works removed, not capped and forgotten
    • Flushing, temperatures and sampling to the hospital's water safety plan
    • New outlets brought into use only when the water safety group agrees
  • ELV interface

    Nurse call and ELV coordination

    • Nurse call, alarms and their containment protected and coordinated with the system owner
    • Any interruption agreed with nursing before it happens
    • Specialist systems stay with their specialist vendors
  • SBC 801 · SBC 901 · NFPA 101

    Fire safety where patients stay in place

    • Smoke compartment walls, doors and dampers kept intact; every penetration we make is firestopped the same day
    • Fire systems out of service only under a written impairment with a fire watch
    • Fire systems installed by Civil Defense-licensed contractors

Medical gas work is carried out by specialist medical gas contractors under our site management, and the system is tested and certified by a qualified verifier before it is returned to clinical use. Where a stamped design is needed, it comes from a licensed engineering office.

What we offer hospitals

Assess, upgrade, maintain

The same three stages as our hotel work, with the hospital's own approvals built in.

Start hereFixed fee, quoted before we visit

Technical assessment of a hospital's MEP and life-safety systems

The essential electrical system, medical gases, critical ventilation, water and fire safety surveyed and rated, with a costed CapEx plan and the immediate items listed first. The fee is separate from any works.

  • Each system rated, with remaining life and one recommended action
  • Gaps against the codes your facility is designed and licensed to, flagged first
  • The report is yours to use with any contractor
  • Upgrades in occupied areas

    Plant replacement, power and ventilation upgrades, phased zone by zone under the ICRA and the hospital's permits.

  • Maintenance

    Planned and reactive maintenance of the building services, with response times written into the agreement and work in clinical areas booked through the hospital.

  • Accreditation readiness of the engineering systems

    We help prepare the engineering side: test records, maintenance evidence and closed defects that your facility management team presents. Accreditation is decided by the accrediting body, not by us.

Who decides what

We do the engineering. The decisions stay where they belong.

Who signs off
Licensing and design approvalMinistry of Health, the municipality and Civil Defense
AccreditationCBAHI or the accrediting body the hospital uses
Clinical decisions, patient movesThe hospital's clinical teams
ICRA and containment classInfection prevention and control, with facility management
Medical gas shutdownsClinical engineering, under the hospital's permit
Stamped designA licensed engineering office

Before you ask us into a hospital

Have you done hospital projects before?

No. CORETECH is a new company. What we bring is a method built for buildings that can't close, written down so you can check it before we start. We would rather you test the method on a technical assessment than take our word for it.

Do you install medical gas systems yourselves?

Medical gas work is done by specialist medical gas contractors under our site management, each one submitted to you for approval before they start. The system is tested and certified before it is reconnected to patients.

Can you get us accredited?

No one but the accrediting body can. We help your facility management team get the engineering evidence in order: test records, maintenance history and closed defects.

Which codes apply to our hospital?

The Saudi Building Code (hospitals are Institutional Group I-2), Civil Defense requirements, Ministry of Health licensing requirements, and the international standards your design and specification name. We list them for your building at survey; see the healthcare standards.

Start with a walk-round

Show us the plant rooms and the areas you're worried about