Primary Production

Also found in: Medical, Acronyms, Wikipedia.

primary production

[′prī‚mer·ē prə′dək·shən]
The total amount of new organic matter produced by photosynthesis.

Primary Production


the phase of the production process within an enterprise during which primary materials are converted into finished products.

Primary production is carried on in primary shops. Its nature and structure depend on the particular product being produced, the type of production, and the technology employed. In machine building, for example, primary production includes the semifinished phase (casting, forging, and pressing), the processing phase (machining and machine-stamping), and the assembly phase. In metallurgy, primary production includes the smelting of cast iron in blast furnaces and of steel in steel smelting units and the manufacture of finished rolled products in rolling mills. In textile production, it includes spinning, weaving, and finishing.

Primary production may be synthetic, as when one or several types of articles, such as motor vehicles or footwear, are made from many types of raw material; or it may be analytic, as when various types of products are obtained from one type of raw material, as is the case in coking or meat packing. The direct processes typical of extractive industry and certain single-stage production sectors, in which one finished product such as bricks or cement is produced from one type of raw material, also represent a form of primary production. Primary production may be continuous, as in chemistry and metallurgy, or discontinuous, as in machine building, woodworking, and light industry. It may also be aggregated or narrowly specialized.

Primary production may be organized according to technology, so that technologically similar operations are grouped, as in casting, machine, or assembly shops. It may also be organized according to object, so that each unit engaged in primary production performs all or most of the operations required to manufacture a certain type of product, such as micrometers or reduction gears. The exact manner in which primary production is to be organized depends on the type of production, the scale on which similar products are also manufactured, and the repetition of production routines and operations.

Under present-day conditions, the level of mechanization of primary production is steadily rising. Manual and manual-mechanical processes are being replaced by mechanized and automated processes. The concentration of operations and the introduction of multiposition processing methods have combined with automation to create a basis for raising labor productivity, intensifying production, and increasing efficiency. The introduction of rotor assembly lines aids in compressing primary and intermediate processes both in space and time. The use of preprogrammed production units makes it possible to gain the advantages of automation and to switch rapidly from one type of work to another. Management is also being mechanized and automated.

Primary production is also being developed through specialization, that is, through strict allocation of a progressively more limited set of tasks to each production facility. This is related to standardization of products, parts, and production processes. Further concentration offers one promising direction for the development of primary production. This can place production on an optimal scale, one in which the introduction and efficient use of advanced methods are ensured. In many industrial sectors, primary production is coming ever closer to being continuous, which leads in turn to a reduction in production time. A smooth production flow is further enhanced by developed methods of organizing production and the introduction of operational control and monitoring by computer.

Primary production accounts for the greatest share of total production costs. For its normal functioning, such factors as repair services, tools, and energy must be efficiently provided. In certain industrial sectors, a comprehensive technology that encompasses every process of production is being developed.


References in periodicals archive ?
According to light extinction coefficient in water column, generally at the surface occurs photoinhibition, followed by subsurface of maximum phytoplankton density and primary production, which decreases towards the bottom, where the decomposition processes are more intense (Wondie et al.
These models are suitable for calculating the primary production for well-mixed lakes, where chlorophyll a (Chl a) concentration ([C.
8220;Gippsland's history has been in heavy industry, engineering and primary production - attracting people that are natural innovators.
The GFSI Global Markets Primary Production Technical Working Group began meeting in early 2010 to define the food safety management requirements that a primary products supplier should have in place for the two levels of the programme--Basic and Intermediate level.
Primary production refers to agriculture, forestry and fishing.
15am in the Hospitality Pavilion on Thursday, July 22, will include a themed discussion on Primary Production, with presentations on TB in cattle and the splitting of sheep carcasses to remove spinal cord as specified risk material.
Primary production is the direct product of photosynthesis, and primary productivity is the sum of all photosynthetic rates in an ecosystem (Fee, 1998).
Project director Andrew Humphries MBE said: "The de-coupling of support from grazing stock and the issues surrounding the Single Farm Payment has drawn the fragility of primary production into sharp focus.
Estimates are that approximately 60 per cent of annual uranium consumption was from primary production in 2004, leaving a 40 per cent annual production shortfall.
The scrap handler scheduled to be your primary production machine should be kept new and under a maintenance contract.

Full browser ?