Collocations for inspector - noun

chief
deputy
local
international
qualified
independent (esp. BrE)
federal (esp. AmE), government (esp. BrE), etc.
building, customs (esp. AmE), factory (esp. BrE), health (esp. BrE), health and safety (BrE), home (AmE), nuclear, planning (BrE), postal (AmE), safety (esp. BrE), school (esp. BrE), schools (BrE), tax (esp. BrE), ticket (BrE), weapons
UN weapons inspectors

call, call in, send, send in
Independent inspectors were called in.
An inspector was sent to the scene of the incident.

allow in, let in
He agreed to allow weapons inspectors in his country.

hire (AmE)
You should hire a professional home inspector before buying.

arrive, visit
be in charge of sth (esp. BrE)
the inspector in charge of producing the report

check sth, look at sth, look for sth
report sth, report on sth

inspector of
an inspector of prisons (BrE)

police
Chief, detective (both BrE)

the rank of inspector (esp. BrE)
He reached the rank of inspector.