The relevant info is in section 13.22 of the CBA if you want to take a look.
13.22 When a Club claims a Player on Regular or Unconditional Waivers, and, subsequently,
in the same season it requests Waivers on the same Player and the original owning Club is the
successful and only Club making a Waiver claim, then the original owning Club shall be entitled
to Loan such Player to a club in another league within thirty days without further Waivers being
asked; provided that such Player has not participated in ten or more NHL Games (cumulative)
and remained on an NHL roster more than thirty days (cumulative) following such successful
claim.