N285.6.4-05 Thin-walled, large-diameter zirconium alloy tubing

 

Clause 7.6
  Question : Does CSA N285.6.4-05, Clause 7.6 require UT inspection of outer tubing (4.6” diameter x 0.052” wall thickness) used for Liquid Zone Control assemblies?
  Answer : No. The requirements of N285.6.4-06, Clause 7.6 are specific only to UT inspections of calandria tubes prior to flaring.