Laboratory Infrastructure and Interactions
36
Site Planning Information BioSpec 70/30 USR_2_V020
5.3.3.2
Impact noise
No significant coupling of impact noise into the building is to be expected due to the
installation of the MR magnets on passive absorbers.
5.3.3.3
Acoustic
Increased sound levels occur in the following areas of an MR system:
•
Technical area
, due to cooling units and ventilators, up to 70 dB(A) depending on the
system type.
•
Magnet room,
due to switching of field gradients, levels of 85 to 100 db(A) depending on
the type of measurement can occur in the magnet area. The sound level of a
measurement ultimately depends on the method selected by the user and the time it
takes.
To comply with the local guidelines for safety at work, we recommend that appropriate
acoustic absorption is provided for both areas. The necessary acoustic insulation depends on
the local limit values and cannot therefore generally be specified.
The following points have proven to be appropriate measures for reducing the noise level:
•
Acoustic insulation should decrease the noise level between the magnet area and
the operating area of the system by 35-40 dB(A)
. Standard Faraday cages provide
sufficient acoustic absorption in their side walls and ceiling.
• A structural separation with common sound insulation is sufficient between the
technical
area
and
operating area
of the system.
Summary of Contents for BioSpec 70/30 USR V2
Page 6: ...Contents vi Site Planning Information BioSpec 70 30 USR_2_V020...
Page 20: ...Safety 20 Site Planning Information BioSpec 70 30 USR_2_V020...
Page 88: ...Moving or Dismantling the MR Instrument 88 Site Planning Information BioSpec 70 30 USR_2_V020...
Page 98: ...Tables 98 Site Planning Information BioSpec 70 30 USR_2_V020...
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