MIL-STD-2219 Fusion Welding for Aerospace Applications S/S by AWS-D17.1The scope of this document is to provide minimum requirements for weld filler materials, workmanship, inspection and record requirements for fusion welding of alloys applicable to aircraft, missiles, other aerospace equipment, their parts and accessories.

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MIL-STD-2219A

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6.5 Welding safety

Fumes generated during welding certain metals, in particular magnesium, present a health hazard.  ANSl-Z49.1 should be reviewed regarding welding safety precautions.

6.6 Cognizant engineering organization

The cognizant engineering organization is defined in 3.7 as the engineering organization responsible for the design of the welded assembly.  This definition does not limit the cognizant engineering organization to the design personnel but should include the appropriate engineering personnel in the organization's material and

process group, stress analysis group, welding shop and quality control as appropriate to the particular weldment.

6.6.1 Examples

The following examples are provided to add clarity.

a.        Company ABC is the design organization for a weldment.  Welding is performed both in-house and at a subcontractor.  Any deviations from the design of the weldment must be approved by the cognizant engineering personnel in company ABC.

b.        The Government is purchasing a weldment from company XYZ and has generated the design.  Whether the welding is performed by XYZ or a subcontractor to XYZ, the cognizant engineering organization is the Government.

c.        The Government has been purchasing a weldment from company ABC using a design generated by company ABC.  The Government wishes to use a second source for the weldment.  The Government is the cognizant engineering organization for the second source; while company ABC is also the cognizant engineering organization with respect to its in-house welding shop or its subcontractors.

6.7 Changes from previous issue

The margins of this standard are marked with vertical lines to indicate where changes from the previous issue were made.  This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous issue.

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