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STANAG 7071

STANAG 7071 additive injection equipment for military fuels

Makers and buyers of equipment that injects additives into aviation and ground fuels for NATO armed forces.

STANAG 7071 sets NATO's minimum design and performance requirements for equipment that injects additives into military aviation and ground fuels. NATO has not released it publicly; this page describes it from the Czech defence standard that implements it.

Edition
1
Published
2012-12-05

NATO has not released this STANAG publicly. It is NATO UNCLASSIFIED, and organisations that need it obtain it through their national standardization authority.

What it is

STANAG 7071 is the NATO Standardization Agreement on design and performance requirements for additive injection equipment for military fuels. Edition 1, promulgated on 5 December 2012 under NATO's LC, OEC, PHEWG committee, it covers the publication AFLP-7071. Its purpose is to set the minimum design and performance an injection unit needs to add prescribed additives to fuel before issue.

NATO has not released STANAG 7071 publicly. This page describes it from a public national implementation, the Czech defence standard ČOS 291001 (edition 1, amendment 2, 2024), which states that it introduces STANAG 7071 edition 1, AFLP-7071(A)(2), into use by the Czech Armed Forces. A national implementation can add national requirements and reservations, so treat what follows as the Czech implementation's content, not as NATO's own text.

What the Czech implementation requires of injection equipment

ČOS 291001 sets performance criteria for stationary, mobile and air-transportable additive injection equipment. The equipment must dose additive in proportion to fuel flow, starting automatically when flow begins and slowing or stopping automatically, without an operator, as flow slows or stops; it must be able to inject several additives at once while keeping them separated before they reach the fuel. Typical flow is about 2,000 litres a minute for stationary equipment and around 680 litres a minute where additive is injected into a line dispensing to aircraft or vehicles, and most low-pressure stationary pipelines run between 0.3 MPa and 1 MPa. The equipment must work under the climatic categories A3 and C1 set by AECTP-230 (ČOS 999933), dose additives with a kinematic viscosity of up to 1,000 mm²/s, and hold injection accuracy better than ±1% of the nominal dose. Components that contact additives must resist them and not contaminate them: aluminium is barred wherever contact with additives S-1745 or S-1747 is likely, and zinc, lead, cadmium, copper or aluminium alloys with more than 4% copper are barred wherever fuel contact is possible.

Air-transportable equipment must additionally be able to inject additive from field and forward supply points, from pipeline systems and from supply vehicles, including directly at an aircraft's tank inlet, and it must be designed for air transport with fittings for mechanical handling equipment.

Additive dosing for aviation and ground fuels

The Czech implementation sets an injector dosing range and a finished-fuel concentration for each additive: the icing inhibitor S-1745, 500 to 2,000 g/m³ on the injector (1,000 to 1,500 g/m³ finished); the lubricity improver S-1747, 5 to 40 g/m³ (9 to 23 g/m³ finished); the static dissipator, 10 to 50 g/m³ after a 10:1 pre-dilution (1 to 5 g/m³ finished); and the thermal stability additive S-1749, 100 to 500 g/m³ (150 to 250 g/m³ finished). F-34 aviation fuel must carry the icing inhibitor, static dissipator and lubricity improver together, and the static dissipator is mandatory for F-35 too; converting F-35 to F-34 adds the icing inhibitor and lubricity improver.

For ground equipment, F-34 is NATO's preferred single fuel, and it may be treated with the cetane-and-lubricity additive S-1750 to become F-63, injected at 500 to 2,000 g/m³ on the injector (800 to 1,200 g/m³ finished). F-63 must not reach aviation equipment, and handling of the S-1750 injection equipment must be controlled so the additive cannot enter the aviation fuel supply.

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A supplier bound by STANAG 7071 through a contract holds the obtained text through its national authority. In ComplyTrain you record the requirements that apply to you as your own requirements, give each an owner, and keep the evidence that shows you meet them against each one.

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