Paper presented at the recent 2017 Aviation Electronics Europe Expo in Munich by Dr. Mustafa Ilarslan, PhD.
In a paper presented at the recent 2017 Aviation Electronics Europe Expo in Munich, Germany, Dr. Mustafa Ilarslan, PhD, discussed – “The management of “False Alarms” and “No Fault Found” events in Military avionic systems”.
In his paper Dr. Ilarslan explains that “False alarms (FAs) impose a devastating impact on military systems. An entire aircraft can be grounded because of a single avionics for which there are insufficient spares available. If a FA causes a particular Line Replaceable Unit (LRU) to be called out incorrectly, there is a better than even probability that a second copy of the same LRU will also experience FA and much sooner than expected, the fleet will be deprived of all spares for that LRU. To then find that the LRUs replaced had No Fault Found (NFF) at the repair depot adds “salt to the wound.” while adding huge sums for lost time in servicing, aircraft downtime and unnecessarily high stocks of replacement parts.
SuperCORR-A was designed specifically to prevent these problems in avionic as well as electrical and electronic components and systems failures caused by corrosion, including no fault found failures and problems caused by Cadmium corrosion. SuperCORR-A is a proprietary Ultra-Thin Film, Water Displacing Lubricant and Corrosion Preventative Compound, manufactured under license in the UK by EnviroTech Europe Ltd.
SuperCORR-A is being used on both military and civilian aircraft to prevent fretting corrosion on electronic and electrical connectors, including F-16, P-3 Orion, Boeing 737’s, C-130, F-15, DHC-6 Twin Otter, Bell helicopters, Bombardier BD-700 series and Bombardier Challenger 300/350, Learjet 45, Legacy 650, and Hawker to name but a few.
SuperCORR-A is also being used at BAE Systems, Honeywell and Raytheon Systems to prevent corrosion from causing avionic, electronics, and electrical systems and components failures and for lubrication and protection of moving parts with a thin dry film.
SuperCORR-A meets the requirements of MIL-L-87177A and Mil-DTL-87177B.
More detailed information can be found in the paper “Electrical connector corrosion prevention Improves reliability and reduces costs” by David Horne which is available here:
NOTE that while quoting Dr. Ilarslam’s paper, with his permission, he is not endorsing or recommending the use of any specific product, including SuperCORR-A.
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Environmentally friendly precision vapour degreasing and cleaning solvents for the aerospace, precision engineering, medical, optical and electronic industries.
EnSolv® vapour degreasing solvents are the most effective alternative to trichloroethylene and other chlorinated and fluorocarbon based solvents. Fast, economical cleaning and degreasing in one tank using minimal floor area.
EnSolv® degreasing solvents are specifically formulated to address the difficult precision cleaning problems experienced in high-tech industries where exceptional levels of cleanliness are needed.
EnSolv® is a trusted family of environmentally friendly precision vapour degreasing and cleaning solvents for the aerospace, precision engineering, medical, optical and electronic industries. Custom blends serve applications where standard formulations require modifications.
These degreasing solvents are specifically formulated to address the difficult cleaning problems experienced in industries where exceptional levels of precision cleaning are needed.
The EnSolv® range of solvents are economical in use, with very high solvency power for excellent fast precision cleaning in any vapour degreasing equipment with greatly improved productivity and lower maintenance costs. Mid range operating temperature reduces energy usage with a faster cleaning cycle and easier more comfortable handling for operators.
EnSolv® is safe for the environment with low global warming and ozone depletion the lower temperature of operation reduces energy usage and reduces CO2 emission. EnSolv® is not classified as a carcinogen enhancing safe usage for operators
EnSolv® is approved by US EPA Snap and is included in US Tri- Service corrosion manuals. Usage is Approved by Boeing and the major OEMs worldwide as a replacement for trichloroethylene.
Manufactured in the UK with excellent customer service, technical support and training from qualified distributors throughout Europe. For more information visit the EnSolv® product website www.ensolv-europe.com
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Eco Friendly Industrial Degreasing Solvents, Safe For Users And The Environment.
Cleaning agents are used in many industries to remove dirt, oil, grease, or other contaminants from machined and fabricated metal, plastic and composite surfaces.
The solvents must be highly refined and leave no residues on drying. They have to be very effective in removal of oils and soils without causing harm to the parts or components being cleaned and leave minimal residues. Solvents are used for cleaning using spray washers or immersion tanks with or without ultrasonics or agitation in manufacturing or automotive industries for removal of process oils from manufacturing processes .
Pre-used parts or assemblies from the transportation, aerospace or manufacturing equipment sectors are often very heavily contaminated when removed from service but must be free of these oils, soils, grease, dirt and contaminants before handling to disassemble prior to refurbishing and rebuilding.
A growing concern regarding environmental and health hazards of the most commonly used chlorinated solvents as industrial degreasing agents has led to the formulation by EnviroTech Surface Technologies of the Clarea® range of safer cleaning solvents.
Clarea® solvents can be used for spray or immersion cleaning for very heavy soiling or are used as wipe cleaners for large surface areas prior to painting or powder coating.
Other solvents in our cleaning specialities range are:
EnSolv: A very stable, safe n-propyl bromide based vapour degreasing solvent. Website: www.ensolv-europe.com
ProSolv: Low temperature precision solvent for electronics, medical and other critical cleaning applications. Website: www.prosolv-europe.com
Aquus: Water based neutral cleaners for use where solvents are not compatible with substrates. Website: www.aquus-europe.com
Why should you choose Clarea® industrial cleaning solvents.
The solvents applied during production or finishing processes have a direct effect on the health of workers and the environment.
Volatile organic compounds or VOCs are chemicals which vaporise at room temperatures. Traditional solvents used for cleaning have low boiling points and a high VOCs making them harmful to use and less eco-friendly Exposure to the VOC’s released by these cleaning agents must be controlled to prevent respiratory, allergic, and immune system complications for users. If your company uses industrial degreasing agents regularly, it is time to evaluate the dangers of this choice.
Clarea® is a less volatile alternative than conventional cleaners. Highly refined aliphatic hydrocarbons with minimal residues and tight vaporisation ranges are capable of providing the same results and can be substituted to create a safer, sustainable, eco-friendly workplace.
The low odour, low flammability and low toxicity of Clarea® solvents provides performance and operator and environmental acceptability using less material at lower costs. Multipurpose use can reduce the inventory of cleaning fluids stocked.
Clarea® HC40 for brush and hand wiping, air dries. Flash point 40℃.
Clarea® HC62 for dip cleaning with agitation or ultrasonics.
Low evaporation. Non-flammable.
Clarea® range of solvents is supplied through our distributors worldwide. For information, advice and pricing visit: www.solvent-cleaners.com
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A Cost Effective and Proven Corrosion Preventative Solution.
By Larry Clark, EnviroTech Europe Ltd
Electrical and electronic equipment and components that are used in adverse work environments, e.g. the oil and gas industry, waste water treatment plants, and the pulp and paper industry, where corrosive gases such as hydrogen sulphide are found cause severe corrosion and the rapid deterioration of the electronic components and equipment including connectors and switches used in these and other work environments. One economical way to prevent or inhibit corrosion from destroying electronics and electrical components is to use CORR-EX LCP-177, Ultra Thin Film, Water Displacing, Lubricant and Corrosion Inhibiting Compound.
If you or your company aren’t worried about costs then by default you aren’t concerned about corrosion or it’s associated costs in lost productivity and lost revenue caused by plant and equipment down time then this a paper that you should just skip. But if you and your company are concerned about costs including the amount money and man hours to repair or replace components to keep an electrical system or electronics operating, an aircraft flying, or a machine running because of failures caused by corrosion then this paper is for you!
Corrosion, in its many forms, is costing both private and public sector hundreds of billions of Euros a year! While all metals corrode due to a number of different factors there is no simple or single solution to the overall corrosion problem. However there are some very cost effective and proven ways to prevent corrosion and failures caused by corrosion and thereby reducing or eliminating associated costs and increasing safety which should be foremost in the mind set of any Preventative Maintenance Programme manager.
One proven and cost effective solution to the corrosion problem is CORR-EX LCP-177, a water displacing, ultra thin film lubricant with corrosion preventative properties. CORR-EX LCP-177 was designed specifically to lubricate and prevent corrosion in electrical fittings and connectors; electrical and avionic harness assemblies and connectors; electrical and electronic switches; close tolerance and dissimilar metal components; lighting connectors and sockets; and the list goes on and on.
CORR-EX LCP-177 is a unique non-flammable “self healing” ultra thin film lubricant with a proprietary corrosion preventive compound that will not harden or crack. CORR-EX LCP-177 is not a wax or oil based product and is formulated without sulphates, chlorides or halogens.
CORR-EX LCP-177 inhibits corrosion caused by exposure to both fresh and salt water moisture as well as the corrosive vapours from Sulphur dioxide (SO2), Nitrogen dioxide (NO2), Hydrogen Sulphide (H2S), Ammonia (NH3), and Chlorine (CL12) based gases found in waste water and sewer treatment plants, pulp and paper mills and plants, chemical and petroleum plants, maritime industry, aircraft/airline industry, military equipment including ships, aircraft, and rolling stock, auto industry, farming and agriculture industry, and the list goes on. Extending the working life of electrical components and systems and other critical items by preventing the deterioration and/or failure caused by corrosion can significantly reduce downtime and operating and maintenance costs as well as enhance safety.
The question for you is: What is the cost of NOT using CORR-EX LCP-177 in your Preventative Maintenance Programme?
CORR-EX LCP-177 is available from EnviroTech Europe Ltd and distributors worldwide.
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Trichloroethylene formally listed as a “Known Human Carcinogen”.
After many years of being listed as a possible or probable human carcinogen, the widely used solvent trichloroethylene (TCE) has now been listed by the National Toxicology Program (NTP) of the U.S. Department of Health and Human Services as a “known human carcinogen.” Ref; NTP’s 14th Report on Carcinogens (November 3, 2016).
Trichloroethylene is widely used in manufacturing industries as a vapour degreasing solvent but its principal uses are as an intermediate raw material in hydrofluorocarbon chemical manufacture. In the light of a number of human studies showing a causal connection between TCE exposure and an increased risk of kidney cancer, NTP re-evaluated and ultimately reclassified TCE. In addition to cancer risk, other problems that have been attributed to TCE exposure include immunotoxicity, neurotoxicity, reproductive toxicity and developmental toxicity, such as potential fetal cardiac defects.
As a known carcinogen exposure to TCE is highly regulated already in the European Union. From April 2016 its use has required authorisation for specified applications.
The ban on the use of TCE for vapour degreasing, a very widely used cleaning process, causes many problems in the engineering and manufacturing industries where oil and soils need to be removed between stages in the production processes and on finished products. The use of alternative water based cleaners are inconvenient and increase process times and costs.
A safer alternative, EnSolv is available as an established “drop in” replacement for TCE often using existing vapour degreasing equipment. For more information on conversion, help or advice from EnviroTech Europe Specialist team go to www.vapour-degreasing.com.
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How CORR-EX LCP-177 protective lubricant prevents seizures of automatic handling systems in the harsh conditions of Industrial cleaning systems.
Specialist cleaning equipment manufacturer C&C Hydrosonics a division of U.S giant Crest Ultrasonics have solved a problem with seizures occurring the on x-y axis linear tracks on their automatic handling systems fitted to multi tank cleaning systems both aqueous and solvent based.
The automatic handling systems are programmed to process baskets or jigs through a cleaning cycle transferring between tanks, lowering and raising work from the liquids. The motorised carriages use nylon wheels running on case hardened mild steel tracks (stainless steel is not available) which corrode in the chemical atmospheres in the machine canopies.
The corrosion prevents smooth running with wheels seizing and binding on the tracks. The vibration can cause components to be shaken from jigs or in extreme cases the carriage will stall requiring intervention by service engineers to remove corrosion and re-lubricate tracks with oil. This is a temporary measure as the oil is quickly removed by the solvents and water based cleaning solutions with corrosion recurring in a short time.
CORR-EX LCP-177 from EnviroTech Surface Technologies is an innovative dry lubricant formulation with protective properties which forms a self-healing film applied from an aerosol. The inorganic lubricant is unaffected by water and acts a barrier against rusting and corrosion. Extensive Trials by C&C Hydrosonics over a six month period with both solvent and water based systems demonstrated that CORR-EX LCP-177 offered a simple solution to the problem with no seizures during the trial period. Previously maintenance every six weeks was needed, now an aerosol spray of CORR-EX LCP-177 is used only during service visits as a routine lubrication and applied during production of the handling system.
Lee Casey Managing Director of C&C is delighted with the cost savings on reduced service and maintenance calls using CORR-EX LCP-177 but is even more pleased that the inconvenience to customers has been eliminated. Use of CORR-EX LCP-177 has now been extended worldwide on Crest automated handling systems.
CORR-EX LCP-177 is available from EnviroTech Europe Ltd and distributors worldwide.
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Why EnSolv is the only realistic “drop in” replacement for TRIKE as a Vapour Degreasing Solvent.
Syd Treacher, a Surface Cleaning Consultant discusses the current controversy regarding replacements for trichloroethylene, the most commonly used vapour degreasing solvent, which was to be phased out of use in industrial applications in April 2016.
This article was prompted while reading an article where the author claimed that a grade of fluorocarbon solvent was a “drop in” replacement for TRIKE (trichloroethylene) and n- propyl bromide. This statement is not true for the majority of applications for which trichloroethylene is used – vapour degreasing or more correctly condensation cleaning.
As a consultant in surface cleaning technology I have studied the options available and come to the conclusion that the stabilised n-propyl bromide (nPB) sold in the UK under the brand name EnSolv® is the ONLY realistic “drop in” replacement for trichloroethylene when used for vapour degreasing. It is on average up to 50% cheaper than fluorocarbon formulations being proposed as alternatives.
From my evaluation it is clear current users of EnSolv® can continue to use the solvent and equipment or if still if using TRIKE you can make the change to EnSolv® in a day. A decision has to be made quickly as the “sunset date” after which TRIKE will not be available for industrial use without authorisation in the EU was April 2016 but you can substitute with only minor changes to control settings on equipment. The legislation regarding the use of nPB may change in the future but if this happens you will have at least 3 years to decide on the alternative so the savings in solvent costs over this period will be considerable compared to alternative materials. Read the full article here..
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There can be no doubt that manufacturers of metal components have remained keenly interested in the advantages to be found in process cleaning, while being confused by the amount of misinformation that seems presented to them.
There can only be two reasons for this. These is an intention to mislead or simply a lack of understanding of the subject.
In any event, the user needs to take time to match what is said to what is fact. Too often companies generalise on the basis that they are not keen for users to look deeply at the subject, yet this is vital if good decisions are to be made.
In the end, the final judgement of the user is what matters but how many people express frustration at some of the suppliers they have met who spent more time criticising a proven product rather than validating their own.
Too often, suppliers are advising what not to do rather than dealing with what really works. This is negative selling and appears on the increase as the market shrinks, regulation gets tighter and independent specialists are more limited in numbers.
Recent history suggests that larger suppliers rely on their size to justify their competence when in fact the really satisfied customers are saying smaller companies with real specialists provided the best solutions.
No one can argue against the fact that the popular choice for metal cleaning and degreasing is still vapour degreasing. This is confirmed by the companies involved in making machinery for degreasing. The order books are heavily stacked in favour of vapour degreasing. If there is one slight disadvantage currently, lead times are often 20 weeks to delivery of machines.
It is clear though that these highly cost-effective systems, which use very little solvent, are likely to remain the first choice for some considerable time.
Arguments related to the Solvent Emissions Directive carry little weight with modern machines as they are so well engineered that they are compliant with regulatory requirements. If there is one common request made by users it remains that they wish there was a single company capable of offering the total solution, e.g. both their own product and machinery together. This would shorten the circle and place more pressure on the supplier to be responsible for promises made.
Most machinery companies work with a multitude of chemistry suppliers, since they want the maximum sale of machines, but should disputes arise this can be a protracted problem as it’s easy to blame someone else for the issues involved.
Much is said about vacuum and hermetically sealed systems being the best solution. They are certainly the most expensive. Speak to an independent specialist to ensure you know the limits of these machines and the cost benefits of alternative designs.
Suppliers who claim aqueous systems are superior need to ensure they advise the user that more energy, more space, longer cleaning cycles more risk of residues and waste disposal issues should be taken into account. Global warming is an issue for all of us so factor in the amount of energy required for heating and drying. To accept that water is safer or better, needs to be well argued. Never forget that water-based cleaning solutions need changing regularly and the oils and metals produced by these processes are waste and needs correct and very expensive disposal.
When considering vapour degreasing it will often be suggested that product transfer systems attached to the existing open-topped machine bring a number of benefits. For handling benefits it is true but never doubt they will not contribute to reducing your consumption, so will do nothing for emission targets.
The best way forward is to make a supplier talk to you about their own product. Beware of those who distract you from this. If a claim is made that seems suspect, ask for the claims to be made in writing. Transparency is a vital ingredient in any relationship with your supplier.
The target audience for most suppliers are those using the carcinogen Trichloroethylene. This is now banned for general use and requires specific authorisation for use in cleaning applications. Do your research, set the questions and insist on the evidence for the arguments put forward. Protecting your business, your staff and the community around you gives a sound basis to ensure a real assessment.
For more information about Vapour Degreasing Solutions please visit our website:
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