BioSpec User Documentation

Safety Checks

The following checks are intended to maintain the safe operation of the instrument. Where appropriate, preventive measures have to be adopted or repairs need to be performed. The points to be checked are generally regulated by laws and standards.

The specified checks and intervals correspond to the minimum requirements. Compliance with the stricter national legislation may be necessary and needs to be checked by the System Owner.

Safe operation of the instrument

To keep the instrument safe for operation, the System Owner is responsible to perform the safety checks listed below.

MR Instrument
Object or Function	What is checked	Interval
Entire installation and accessories	▪ Visual inspection of the instrument integrity.	Annually
Connections to protective earth	▪ All protective earth ground connections are correctly established. ▪ The resistance of the ground connections is verified according to the local standards (1)	Annually / according to local regulations and after every decontamination e.g. with vaporized hydrogen peroxide
Accessible cabling, cabinets and protective covers	▪ Visual inspection of cables, cable routing and correct installation of all protective covers	Annually
Ventilation (required when anesthesia gas is used and for cryogenic magnets)	▪ Visual inspection of correct function of the ventilation /air conditioning system. ▪ Installation and specifications of the systems have to comply with local laws	Annually
O2 supervision if installed (not required for cryogen free magnets)	▪ Functional inspection of the O2 supervising system. ▪ Replace O2 sensors according to the service interval given by the manufacturer.	see manual of the installed device
Emergency lights in magnet room, technical room and operating area	▪ Check function of emergency lights. ▪ Replace lights if required.	Annually
Fire extinguishers	▪ Check according to local regulations ▪ Check for usage of non-magnetic models	Annually
Controlled Access Area	▪ The Controlled Access Area is clearly visible marked. ▪ The magnet room is identified with the warning sign “strong magnetic fields”. ▪ Access to the Controlled Access Area is controlled in an adequate way.	Annually
Electronic ON/OFF switch	▪ Check functionality of electronic ON/OFF switch: The electronic system shuts down. ▪ Check free access of the electronic ON/OFF switch. Do NOT test the Magnet Emergency Quench Button!	Annually
Mains Disconnect	▪ Check that access to the Line Power Distributor is granted to disconnect the instrument from mains in case of emergency.	Annually
Magnet Emergency Quench Button and Magnet Monitoring Unit	▪ Check general status of the monitoring unit. ▪ Check batteries of the monitoring unit and replace if necessary. ▪ Check connection to Magnet Emergency Quench Button. ▪ Check free access of the Magnet Emergency Quench Button. ▪ Magnet drop-off plate free? Do NOT test the Magnet Emergency Quench Button!	Annually, battery check monthly during regular checks, replacement latest every 6 months.
Magnet Emergency Quench Button	▪ Check Magnet Emergency Quench Button, in magnet room and at the magnet monitoring unit. To be checked by Bruker Magnet Service only, special tools required! Please contact Bruker for this safety check.	Every 2 years during cold head service.
ATS Emergency Stop	▪ Check drive stop function of the ATS Emergency Stop.	Monthly
ATS Spindles	▪ The spindles of the ATS are Teflon coated to avoid adherence. Check coating visually and potentially clean spindle(s) gently in case of dirt.	Annually
Accessories	▪ Visual inspection of all accessories. ▪ Electrical safety of all accessories. ▪ Remove all magnetic tools from the Controlled Access Area.	Annually, see service instructions of the installed device,
Instructions for Use	▪ User Documentation DVD present and legible. ▪ Every operator is familiar with the operating and safety instructions?	Annually. New members before first operation.
Training	▪ Instruct new staff and operators on safety aspects as described in the Instructions for Use. ▪ Instruct and train non staff members that have access to the Controlled Access Area, i.e. cleaning personnel or ▪ Instruct and train fire brigade and medical assistance	Annually. New members before first operation.
RF Coils	▪ Check integrity of housing (inner/outer). ▪ Check integrity of cables and connectors. ▪ Check for pollution. ▪ Check for liquids.	Monthly. After every decontamination.
Gradient Coil	▪ Check gradient cables for damage of isolation. Avoid sharp edges (gradient cables may move on sharp edges during gradient switching).	Annually.

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^{(1) Instructions for measuring equipment leakage current:}

^{National regulations have to be observed, e.g. in Germany the DIN VDE 0701-1. According to DIN VDE 0701-1, the equipment leakage current does not have to be measured:}

▪: ^{if a protective conductor is permanently connected and}

▪: ^{if the on-site protective standards for indirect contact can be shown. In such cases, the user has to comply with DIN VDE 100-710.}

^{It is not necessary to measure leakage current at the RF Coils since:}

▪: ^{applied part has non-conducting surface}

▪: ^{live parts are separated from applied part double insulated through power supply}

▪: ^{applied part does not have dangerous voltages.}