Biomedical maintenance: building a preventive plan that holds

In many institutions, biomedical maintenance means repairing what breaks. The result is familiar: equipment out of service for weeks, procedures postponed, and a repair budget far exceeding what prevention would have cost. Moving from a curative to a preventive approach does not require a large investment. It requires a method.

Step 1: the inventory, without which nothing is possible

You cannot maintain what you have not recorded. For each piece of equipment, record:

• an internal asset number, physically fixed to the device;
• description, make, model, serial number;
• department and room assigned;
• commissioning date and warranty end date;
• supplier, and the contact for the competent technician;
• whether the technical documentation is held.

A spreadsheet is enough to start. What matters is that the inventory is current and that one person is responsible for it.

Step 2: rank by criticality, not by price

You cannot treat every device with the same intensity. Rank them with three questions: what happens if this device stops now? Is there a substitute? How long does it take to repair?

• Criticality 1 — vital: ventilators, defibrillators, intensive care monitors, incubators, sterilisers, the generator. A failure endangers a patient or stops a department.
• Criticality 2 — important: imaging, laboratory analysers, theatre equipment. A failure stops an activity but not immediate life-saving care.
• Criticality 3 — routine: furniture, syringe pumps held in numbers, small measuring devices available in multiples.

Concentrate 80% of your preventive effort on criticality 1. That is where prevention gives the best return.

Step 3: set the intervals

The first source is always the manufacturer's manual: it gives the operations and the intervals. Then adapt to your actual use — a device running 12 hours a day in a dusty environment does not follow the schedule of one used two hours a week.

A typical plan combines four levels:

• Daily, by the user: visual check, cleaning, start-up test, alarm verification. This is the most profitable level and the most often neglected.
• Monthly: filter cleaning, inspection of cables and accessories, battery testing.
• Six-monthly or annual: technical servicing, calibration, electrical safety testing, replacement of wear parts.
• Counter-based: for equipment whose wear follows hours or cycles rather than the calendar.

Step 4: train the users

This is the cheapest and most effective lever. A significant share of failures comes from misuse, unsuitable cleaning or an ignored alarm. Post a one-page sheet beside every critical device: connections, start-up procedure, daily checks, and who to call when something is wrong.

Negotiate training hours into every purchase contract, and have them refreshed as staff turn over.

Step 5: build a stock of critical parts

Where a part can take six weeks to arrive, local stock is not waste. Prioritise:

• batteries for vital equipment — the most predictable wear part;
• sensors and patient cables, which break with use;
• filters and maintenance consumables;
• specific fuses and seals.

Ask every supplier, at the time of purchase, for the list of wear parts recommended to hold in stock. Have it included in the quotation.

Step 6: track three indicators, not fifteen

A useful dashboard is a dashboard that is actually kept. Three indicators are enough:

1. Availability rate of criticality 1 equipment.
2. Mean time to return to service after a failure.
3. Share of preventive work completed against plan.

The third is the most revealing: a preventive plan completed at 30% is not a plan, it is an intention.

What to negotiate at purchase, not after

Maintenance is prepared at the order stage. Require in the contract:

• the technical manual, not only the user instructions;
• service access codes if the device requires them for maintenance;
• the spare parts list with references and prices;
• the manufacturer's commitment on how long parts remain available;
• training hours, for users and for technicians;
• the guaranteed response time, and the penalty for exceeding it.

A device delivered with no technical manual and no service access is a device you will never be able to maintain yourself.

For parts, consumables and service contracts, compare distributors by country on MedicalExpo Africa. See also our guide to writing a complete request for quotation.