Dragan Mitrovic, TRIUMF structural engineer, was consulted earlier this week regarding seismic requirements for the SMP assembly.  Installation location, overall dimensions, total weight, and the center of mass for assembly IRH1670 were provided to him by e-mail.  On Feb 20th he communicated verbally that he had analyzed the assembly for seismic loads, and concluded that this equipment does not require anchoring or any other form of seismic restraint.

Update (May 30, 2019): Confirmed with Dragan that the approach he used for analysis was that specified in the BC Building Code (both 2012 edition and updated 2018 edition).