Click here to make tpub.com your Home Page

Page Title: Grand Lot--This lot consists of a number of sub-lots which possess the following characteristics:
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home


   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 

SB 740-91-01
The selection of representative samples for inspection is dependent on a given lot's homogeneity. However, to ensure
practicality of storage inspections the lot sampled should be as large as possible. For this reason three lot types have
been defined for use as follows:
(1) Manufacturers Lot--This lot consists of a group of items, belonging to a uniform, pre-established (by
manufacturer) lot, batch, cure data, or control number. Further, as items are drawn from storage for field use, the
remaining items may be considered as either a lot unto themselves, or as deemed appropriate a sublot to a grand or
mixed lot.
(2) Grand Lot--This lot consists of a number of sub-lots which possess the following characteristics:
(a) Identical stock number, class, type, model
(b) Same manufacturer
(c)
Same period of manufacture
(d) Comparable storage history
(e) Identical packaging
(f)
No known significant difference in quality.
NOTE
The grand lot may be formed when complete analysis of all available data-including the conditions noted
above and the technical judgment of the surveillance teams--indicates the homogeneity of deteriorative
characteristics. The formation of a grand lot at a depot is only a paper transaction and does not require
any rewarehousing or reworking of material.  Where such grand lots are formed and sampled for
inspection, reports of results must include a complete description of the grand lot composition in each
case. If samples drawn from the grand lot indicate heterogeneity of sub-lots comprising the grand lot, the
lot will be terminated, and manufacturer's lot sampling substituted.
(3) Mixed Lot--The mixed lot consists of one or more lots whose identification by manufacturer or lot number has
been lost, and relationship to other lots cannot be determined. An example of this is depot rollback, or repacks of
preserved materials. Several mixed lots may be grouped into grand lots if inspection data indicate that the lots possess
similar deteriorative characteristics.
e. Acceptable Quality Level (AQL). The Acceptable Quality Level (Storage Quality Level) is the maximum percent
defective (or the maximum number of defects per hundred units) that, for purposes of sampling inspection, can be
considered satisfactory.  Table 2-4 (taken from MIL-STD-105) provides specific accept/reject criteria for designated
sample size and acceptable quality levels.
f. Shelf Life (SLC). The Shelf Life column contains a code describing the particular deterioration characteristics
versus time for an item of consideration. Specific definitions for the codes listed in this column are per AR 700-89 and are
defined in Table 2-5. Appendix C gives a separate listing of items identified with specific shelf-life codes for CECOM
materiel.
2-6

Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business