Cleanroom Lighting & Systems Upgrade | North Middlesex Hospital Pharmacy

Case Study: Cleanroom Lighting & Systems Upgrade at North Middlesex University Hospital

Client: North Middlesex University Hospital NHS Trust Contractor: Hendry Construction Ltd

Project Overview

Hendry Construction was appointed to carry out essential upgrades within the specialist pharmacy cleanroom at North Middlesex University Hospital. The project included replacing cleanroom lighting, installing a modern intercom system, and modifying the door interlock infrastructure to ensure continued secure operation. All works were conducted in a live hospital environment, fully compliant with MHRA and ISO cleanroom standards, ensuring zero contamination risk and uninterrupted pharmaceutical output.

Objectives

Upgrade outdated fluorescent lighting to energy-efficient LED luminaires
Improve internal communication with a hands-free digital intercom system
Ensure compliant, secure door interlock and airlock operation
Minimise disruption and eliminate contamination risks

Scope of Works

Cleanroom Lighting Replacement

Removed legacy fluorescent fittings
Installed IP65-rated, sealed LED luminaires
Verified illumination to ISO Class 7 cleanroom standards
Lighting supplied by Solite, specialists in cleanroom lighting

Digital Intercom System Upgrade

Decommissioned existing analogue systems
Installed flush-mounted, hands-free digital intercoms
Integrated with existing pharmacy workflows

Door Interlock System Modifications

Rewired interlock system for correct sequencing
Maintained airlock integrity and pressure control
Tested and commissioned to ensure full compliance

Challenges & Solutions

Live Hospital Environment: Work was scheduled around pharmacy operations with phased planning
Cleanroom Protocols: All works conducted with HEPA-filtered workstations and full gowning procedures
Non-Standard Lighting Apertures: Custom-fabricated bezels provided seamless fitting for new luminaires