Off-the-shelf-items

Standard heat exchangers (which are in some instances off-the-shelf items) are available in sizes ranging from 1.9 to 37 m" (20 to 400 ft") at costs lower than for custom-built units. Steel costs are approximately one-half, admiralty tube-side costs are two-thirds, and stainless costs are three-fourths of those for equivalent custom-built exchangers. 

Blast resistant doors arc not "off the shelf items, They are built to order and manufacturers generally require 6 to 8 weeks after notification of approval of the shop drawings and design data to schedule and fabricate low-range doors, 10-12 weeks for mid-range doors, and 12 weeks or more for high-range doors. 

Off-The-Shelf-Items. These items required by the military services which are generally used thru-out the civilian economy and v ich are available thru normal commercial distribution channels Ref OrdTechTerm (1962), 208-R... 

Units of this type are available from a number of sources, usually manufactured from a polyester or vinyl ester resin, although a few epoxy structures are also on the market. At least one vendor is casting such units to order from a fu-ran castable. The standard, off-the-shelf items rarely have a top circumferential flange-a necessity if they are to be mated with an adjacent membrane system, as shown in the drawing cited above, and the buyer should make the provision of such a flange a condition of purchase. 

Source Sferopoulos, R., A review of chemical warfare agent (CWA) detector technologies and commercial-off-the-shelf items, Defence Science and Technology Organisation, DSTO-GD-0570, Australia, 2008. 

QA Procurement Design, testing, and brication tied to environmental qualifications. QA levels correlated to SSC and hazard classification. Commercial grade or off-the-shelf items OK if qualified for service. Commercial grade or off-the-shelf items OK if qualified for service. 

The enterprise analyzes alternatives of 6.5.2 to determine availability of an off-the-shelf item (nondevelop-mental hardware or software). Each identified off-the-shelf item must be assessed to determine cost effectiveness, quantity, availability, supportability, and viability of the supplier and/or their product. 

The examples above are only typical. Endless variations are possible. For example, the hybrids are not restricted to be merely of the 3-dB type. An example is shown in Fig. 2.21 with a power split of 2.3/4.0dB. A former Ph.D. student Clayton Larson (now a successful Big Shot ) and the author needed such a hybrid for a very special antenna. Not being an off-the-shelf item, we had to either order one custom-made or make one ourselves. Clay those the latter approach (he was never too keen on telephone negotiations). Overnight he designed, cut the design with an exacto knife and assembled such a hybrid. The next morning we checked it out on the special antenna. It worked flawlessly. Thank you Clay. 

Off-the-shelf item An item determined by a material acquisition decision process review (DoD, Military Component, or subordinate organization as appropriate) to be available for acquisition to satisfy an approved material requirement with no expenditure of funds for development, modification, or improvement (e.g., commercial products, material developed by other Government agencies, or materiel developed by other countries). This item may be procured by the contractor or furnished to the contractor as Government-furnished equipment (GFE) or Government-furnished property (GFP) (MIL-STD-882B). 

Basic stock shapes such as rod, tube, strip, and sheet in most plastics materials are available as off-the-shelf items much as similar... 

Continuity Vendor likely to remain in operation and raw materials likely to remain available Good. Large, stable engineering company. The equipment is comprised mostly of off-the-shelf items. 

Qualification tests for commercial off-the-shelf items are unknown or not performed... 

Improved Procurement Process. Review procurement processes to eliminate barriers to procurement of off-the-shelf items where acceptable. 

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