Queries related to life time and quality of BBB devices

Dear BBB Manufacturers,

We are evaluating few single board computers (ARM based). And we
have come across BeagleBone Black.

Request you to answer few queries related to life time and quality of BBB.

  1. Is it IP 65/66 Complaint ?
  2. What will happen if I run Linux + my own application (very heavy on RAM & CPU ) for years ?
  3. If I enclose it with some metal enclosure will it last for years ?

My application will be deployed in mining camp and I want to use it as a control + data processor device.

Thanks.