Base separations in the loading explosive charge to be injected are critical defect of common HE shells. The base separations are checked through sampled inspection presently. The paper shows that we can design a new acceptable sample plan, which is development adjusted based on the calculated the reliability of acceptance and adapt to our base of industry actuality, from the analysis of the defect occurring and flowing at home and abroad at present. That is in the beginning of production, we checked the shells totally and after having reached a certain quantity of satisfaction, and we shall execute the sampled inspection once more. Under the condition without enhancing the cost of inspection, lower using risk of army side and lift a higher reliability of acceptance in ICT.