Engineer's Guide
The complete field reference for biomedical engineers
37 chapters in all - 20 of cross-cutting practice every BMET needs, plus a dedicated chapter for each of the 17 equipment departments this site covers. This is standard clinical-engineering practice, not facility-specific policy: always defer to your own department's SOPs and the manufacturer's service manual where they differ.
General Practice
The working knowledge that applies regardless of which device is on the bench.
PM FundamentalsWhy PM exists, how service intervals are set, inclusion criteria, and what a real PM record needs to contain.Electrical Safety TestingThe four core measurements a safety analyzer runs, single-fault condition testing, and why a fail means the device leaves service immediately.Incoming InspectionThe full baseline sequence for every device entering service, plus why loaners and returned-repair units need it just as much as new purchases.Troubleshooting MethodThe six-step structured approach behind every per-device troubleshooting guide on this site, plus how to handle a fault that won't reproduce.Core ToolkitWhat a working BMET bench and field kit actually contains, what each analyzer verifies, and how to keep the kit itself trustworthy.Standards & RegulatoryIEC 60601, AAMI, FDA classification and clearance pathways, Joint Commission, and ISO 13485 - what each one actually governs and how they interact.Connected-Device SecurityBaseline cybersecurity practice for networked infusion pumps, monitors, and imaging systems, plus the FDA's premarket cybersecurity expectations.Certification & CareerCBET, CRES, CLES, CHTM - the ICC/AAMI credentials, exam structure, and a realistic career path.Root Cause Analysis5 Whys and Fishbone diagrams in real depth, plus when to escalate a repeat failure beyond the individual ticket.Risk ManagementISO 14971's severity × probability logic, the risk matrix, ALARP, and residual-risk communication in practical BMET terms.Alarm ManagementAlarm fatigue as a documented patient-safety issue, physiological vs. technical alarms, and the real role a BMET plays in managing it.Medical Gas SystemsNFPA 99, DISS fittings, cylinder handling, zone-valve awareness, and alarm-panel monitoring for piped gas systems.Battery & Power ManagementWhy voltage checks aren't enough, chemistry-specific replacement schedules, Li-ion handling safety, and runtime-complaint troubleshooting.Calibration & TraceabilityWhat NIST traceability actually means, why your own test instruments need calibration too, and tolerance-band discipline.Infection Control & ReprocessingThe Spaulding classification in full, why it governs bench work as much as clinical use, and re-disinfection before return to service.Recall & Hazard Alert ResponseThe full recall response sequence, FDA recall classification in detail, and who owns the process at a facility.Asset Management & CMMSWhat a CMMS actually tracks, why data discipline determines its value, and formal retirement.Basic Electronics RefresherOhm's Law in practice, capacitor failure signatures, connector wear, ESD, and reading a schematic block diagram.Human Factors & Use ErrorDistinguishing a true use error from a use-error-prone design, and why this distinction matters for escalation.Documentation & RecordkeepingWhat a complete service record contains in full, why it matters years later, and how it supports every other chapter in this guide.
By Department
What's actually different about servicing each equipment class - real standards, subsystems, and failure patterns.
Ventilation & Respiratory EngineeringISO 80601-2-12, the blower/exhalation-valve/O2-sensor trio, circuit-to-patient matching, and alarm-priority logic specific to ventilators.Patient Monitoring EngineeringECG/SpO2/NIBP/capnography fundamentals in depth, simulator-based verification, network/telemetry layer isolation, and alarm limit configuration.Anesthesia Equipment EngineeringThe daily machine check in full, agent-specific vaporizers and the Selectatec interlock, CO2 absorbent chemistry, and WAGD scavenging.Medical Imaging EngineeringX-ray/fluoroscopy/CT tube life and lockout procedure, ultrasound transducer care, MRI cryogen/ferromagnetic safety, and CT dose management.Laboratory & Diagnostics EngineeringQC controls, Levey-Jennings charts and Westgard rules explained, reagent-lot verification, and centrifuge rotor life limits.Sterilization & CSSD EngineeringSteam, ETO, and H2O2 plasma sterilization compared, biological vs. chemical indicators, and AAMI ST79 load configuration.Surgical & OR EngineeringESU return-electrode monitoring in depth, surgical smoke evacuation, OR table power/hydraulics, and surgical light specifications.Renal & Dialysis EngineeringRO water treatment and AAMI water-quality standards, dialysate conductivity/chemistry, blood-leak detection, and between-patient disinfection.Neurology & EEG EngineeringElectrode impedance and signal quality, intraoperative neuromonitoring criticality, evoked-potential systems, and the 10-20 electrode system.Ophthalmology EngineeringLaser safety classes and interlocks, phacoemulsification handpiece tuning, and slit-lamp/tonometer calibration.Dental Equipment EngineeringHandpiece bearing maintenance and lubrication schedules, dental unit waterline (DUWL) biofilm control, and compressor/vacuum moisture management.Physiotherapy & Rehab EngineeringElectrotherapy output verification and electrode safety, mechanical wear on load-bearing rehab equipment, and therapeutic ultrasound calibration.Endoscopy EngineeringAAMI ST91 reprocessing in full, mandatory pre-cycle leak testing, light-source lamp-hour tracking, and critical vs. semi-critical scope classification.Respiratory Therapy EngineeringOxygen concentrator sieve-bed operation and degradation, humidifier infection control, and jet vs. mesh nebulizer failure modes.EMS & Transport EngineeringVibration/shock durability requirements, field-temperature battery reliability, mounting hardware inspection, and the rapid-turnaround service model.Patient Warming EngineeringForced-air warmer filter/hose contamination concerns, fluid-warmer over-temperature protection, and connector wear inspection.Suction & Vacuum EngineeringCentral vacuum plants vs. portable aspirators, load-testing regulators, overflow/float-valve protection, and canister reprocessing.