Statistical sampling procedures for on-line inspection by attributes of processed fruits and vegetables.

CFR · 2024-01-01 · US · Title 7

(a) (1) The producer has designated the intended grade for the basic inspection period prior to the start of production. (2) Inspection of the product shall be made during the basic inspection period at a point after which all product characteristics, subject to inspection, are fixed and will not be subject to change during final packaging. (3) A shift to CuSum sampling plans from lot sampling plans during a basic inspection period is not permitted (or vice versa). (b) (c) (1) Add the number of defects (or defectives) for the present sample unit to the CuSum value of the previous sample unit. (2) Subtract the sample unit tolerance (“T”). (3) The CuSum value is reset in the following situations. However, determine compliance with the designated grade (see paragraph (d) of this section) prior to resetting the CuSum value: (i) Reset the CuSum value to zero (0) if the CuSum value is less than zero (0). (ii) Reset the CuSum value to the acceptance limit (“L”) if the CuSum value exceeds the acceptance limit (“L”). (d) (2) A portion of production fails the designated grade if the CuSum value, calculated from the sample unit representing that portion, exceeds the acceptance limit (“L”) for one or more classes of defects. (e) (f) (2) The grade assigned to similarly identified production will be the lowest grade assigned to any portion of that similarly identified production. (g) (h) (2) AQL values of 10.0 or less may be expressed either in “defects per hundred units” or in “percent de

official document · source cfr-2024 · id 7:§ 52.38b