Definition :
Affected person ,in the area But not working on the Equipment
not within the Arc Flash boundary.
Lockout/Tagout training required???
I'd say Arc flash Training yes but Question Lock out /Tag out ,as not involved in equipment repair at all.
Need answer with reference . Thanks

http://vmsstreamer1.fnal.gov/VMS_Si...RC%20Flash%20Boundary%20&%20NFPA.pdf

NFPA 70 E

https://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=9804

OSHA

1910.147(a)(1)(ii)(D)

Exposure to electrical hazards from work on, near, or with conductors or equipment in electric-utilization installations, which is covered by subpart S of this part; ...

Telsa
1910.147 (B)

Definitions applicable to this section.

Affected employee. An employee whose job requires him/her to operate or use a machine or equipment on which servicing or maintenance is being performed under lockout or tagout, or whose job requires him/her to work in an area in which such servicing or maintenance is being performed.




Seems funny if your observing you;d have to Lock out????
Next would be definition of (work area??)

Yoopersup

Agreed with the comments lock out tag out (LOTO) is very important safety procedure specially for electrical works.