MIL-DTL-248D
4.2.1.2 For batch process. Prior to initiation of sustained production, the contractor shall
submit a first article sample as designated by the Contracting Officer (see 6.2) for evaluation in
accordance with the provisions of 4.3.3.2. All samples submitted shall have been produced by
the contractor using the same production processes, procedures, and equipment as will be used in
fulfilling the contract. All materials, except packaging, shall be obtained from the same sources
as will be used in regular production. The sample shall be accompanied by certificates of
analysis. A first article quantity, or portion thereof, as directed by the Contracting Officer, shall
also be submitted wherever there is a lapse in production for a period in excess of 90 days or
wherever a change occurs in the manufacturing process, material used, drawing, specification or
source of supply as to significantly affect product uniformity as determined by the Government.
Prior to submission, the contractor shall inspect the sample to the degree necessary to assure that
it conforms to the requirements of the contract and submit a record of this inspection with the
sample.
4.2.2 Inspections to be performed. The sample shall be subjected by the Government to
any or all of the examinations or tests specified in 4.3 and 4.4 of this specification and any or all
requirements of the applicable drawings.
4.2.3 First Article Rejection. If any sample falls to comply with any of the applicable
requirements, the first article quantity shall be rejected. The Government reserves the right to
terminate inspectio n upon any failure of a sample to comply with any of the stated requirements.
4.3 Conformance Inspection.
4.3.1 Lot formation.
4.3.1.1 Lot formation for continuous process. A lot shall consist of TNT produced by
one manufacturer in accordance with the same specification or same specification revision under
one continuous set of operating conditions. Each interfix series shall consist of that quantity of
TNT that has been subjected to the same chemical process intended to make the final product
homogeneous. The product shall be submitted for inspection in accordance with MIL-STD-1916.
4.3.1.1.1 Lot interfix. The interfix series as described in MIL-STD-1168 shall be
controlled in the following way. The interfix series shall be changed whenever there is a
significant change in the raw materials, process or equipment. A significant change to the raw
materials, process and equipment shall be jointly defined by the Contractor and Contracting
Officer.
4.3.1.1.2 Serial lot. A lot shall cons ist of the maximum amount of TNT loaded from one
loading dock in a 24-hour period, manufactured under a continuous set of conditions without a
significant process interruption or change during the manufacture of the lot (each transportation
unit used will be identified as a sublot). Each box shall be serially marked. A significant process
interruption or change may be defined by the contracting officer.
4.3.1.2 Lot formation for batch process. The following shall apply to TNT produced by
the Batch Process: The term "lot" as used throughout this specification, refers to an inspection lot
which is defined as an essentially homogeneous collection of batches of product from which
representative samples are drawn and inspected to determine conformance of the selected
batches with applicable requirements. The sample selected shall represent only that batch from
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