Legal limitations are in place concerning radiological doses that NPP personnel may accumulate during a given period of time. Legally allowed doses are laid down conservatively such that they are not expected to cause any damage to health. An individual annual dose of 20mSv is such a value. Considering that AMP/PLiM activities may involve special circumstances that may lead to increased personnel exposure to ionizing radiation, it is essential that all such tasks are planned in advance with a view to limiting the dose. The concept of as low as reasonably acceptable (ALARA) must be rigorously applied. Shielding, distance and time spent on the activity must be optimized to create those conditions amenable to ALARA principles. Practice on mock-ups will facilitate a rapid and technically sound work programme. Therefore, radiological protection measures, where applicable, become an integral part of PLiM.