Severe icing question

[nnc0]

FWIW
Airbus uses the expression 'IF SEVERE ICE ACCRETION' in a number of ECAM procedures for conditional statement actions that require an approach speed additive for ECAM procedures that affect the wing anti-ice system.

ELEC DC ESS BUS SHED

• IF SEVERE ICE ACCRETION

  MIN SPD......................................................... ......VLS + 10 / G DOT
  

For purposes of AIRBUS ECAM application only, SEVERE ICE ACCRETION is defined as having

approximately 5 mm of ice accretion on the airframe.