This test determines the oxidative stability of a lubricant exposed to high pressure air at an elevated temperature. The sample is cooled, placed in the test chamber and brought to the test temperature. The process is repeated with sample. Elastomers are frequently exposed to lubricating oils during normal usage. The corrosion currents on the most anodic electrode (Iacoup, MAE) are calculated according to Eq. CEC L-85-T-99 Oxidative Stability of Lubricants by High Pressure Differential Scanning Calorimetry. A calibrated metal pycnometer is weighed, filled with sample and equilibrated at the test temperature. Safety devices and/or vents shall be plugged during this test. Paragraphs (b), (c), (d)(1), (d)(5), (e), (f), and (g)(1) of this section, applicable to delivery hose assemblies, apply only to hose assemblies installed or carried on the cargo tank. Table 1 follows: Table 1 to Paragraph (a) - Requalification of Cylinders1. (7) An inspection of the required markings on the tank car for legibility. Box 8 152 Metal Samples Rd. Condemnation Criteria. Each tank car that is inspected and tested as specified in 180.509 must have a written report, in English, prepared according to this paragraph. Grease for automotive chassis components and universal joints for non-extreme temperatures and frequent relubrication intervals. In this test, three steel balls are arranged in a circle, locked in place and coated with the test lubricant. The filter is rinsed with solvent to remove any sample oil, leaving only the solid particles that were present in the original sample. If corrosive sulfur compounds are present in the oil, they may react with system components and compromise performance. (3) Each day before retesting, the retester shall confirm, by using a calibrated cylinder or other method authorized in writing by the Associate Administrator, that: (i) The pressure-indicating device, as part of the retest apparatus, is accurate within 1.0% of the prescribed test pressure of any cylinder tested that day. Values less than 15 N-m torque are considered adequately mobile for wheel bearing applications. (o) On-truck remote control of self-closing stop valves - MC 330, MC 331, and MC 338. The three lower balls are removed, cleaned and examined under a microscope. Although not required to meet the educational and years of experience requirements, a person who performs visual inspections or leakage tests or signs the inspection reports must have the knowledge and ability to perform such inspections and tests and must perform them as required by this subchapter, and must register with the Department as required by subpart F of part 107 of this chapter. This test determines the coking tendency of an oil by splashing it onto hot metal surfaces at high temperatures. 180.603 Qualification of portable tanks. The quantity of residual matter is determined gravimetrically and viewed under magnification to identify larger particles. Aliquots are removed and tested periodically thereafter. Any sulfur compounds present in the sample will react with the copper to form copper sulfide, a brownish-black substance. (iii) The rebuilder may rebuild a DOT 4B, 4BA or 4BW cylinder having a water capacity of 9.07 kg (20 lb) or greater by replacing a head of the cylinder using a circumferential joint. Severe foaming can lessen thermal conductivity and increase oxidation as well as result in cavitation and starvation of lubrication in critical areas. Cost per sampling interval, High Temp/High Shear Viscosity by Tapered Bearing. No cylinder may be filled with a hazardous material and offered for transportation in commerce unless that cylinder has been successfully requalified and marked in accordance with this subpart. This method determines flash points between 0 and 200F (-18 to 93C). All closures shall be in place while the test is made and the pressure shall be gauged at the top of the tank. The third method of determining localized corrosion rates is commonly used to determine localized corrosion rates from a DFC-based localized corrosion monitor (e.g., a typical design is shown in Fig. (2) Cylinders must be segregated in lots for reheat treatment. Heptane-insoluble substances include asphaltenes (waxes, heavy oils, resins), wear debris, and other compounds. After each unloading, the operator must visually check that portion of the delivery hose assembly deployed during the unloading. Corrosive to the tank or valve means that the lading has been shown through experience or test data to reduce the thickness of the material of construction of the tank wall or valve. The oil-free, moisture-free sample from PLTL-20 is put through a series of extractions and washings resulting in the insoluble residue on a filter paper. This test can be modified to include other times and temperatures as well as modified atmospheres, measurement of oil consumption, cyclic testing, acid number, viscosity, sediment weight, and more. Silicone lubricants intended for electrical applications need to be non-flammable and heat-stable. The mixture is shaken, the layers are allowed to separate and the water layer is removed. Mechanical and hydraulic systems often contain expensive and sensitive steel components that may corrode in the presence of atmospheric moisture, condensation or water contamination. (iv) The cylinder is dried immediately after hydrostatic testing to remove all traces of water. Reported are observations of layer uniformity, adhesion, and the formation of agglomerations or voids. Consistency is measured by a penetration test. Metals may be weakened or destroyed when they react with atmospheric oxygen to produce rust. This service information describes procedures for doing a detailed visual inspection for chafing and proper clearance of the LH and RH MLG primary zone APD sensing lines, the hydraulic tube assemblies and the surrounding structure, and. After 30 seconds the residual pressure is read and reported. To claim a rolling stock exemption on aircraft, watercraft, limousines, and rail carrier items, the purchaser must indicate the method by which the item purchased qualifies for the exemption. Using this data an NAS class number is assigned. FTM-5308 uses 1x1 square metal specimens tied together in a specific arrangement placed in the bottom of the glass test cell or tube. This method is now covered by ASTM D1310. The time it takes for an oxidation exotherm to start is determined and reported. (2) The tank car was in an accident and shows evidence of damage to an extent that may adversely affect its capability to retain its contents or to otherwise remain railworthy. 7.2. Info Type Certificates (TCDS) Service Bulletin 2007-002 (strut-to-fuselage fitting) SB2007-002 AD2008-09-18. (c) Service life shell thickness. Aircraft. The test pressure on the name plate or specification plate, 1.5 times either the MAWP or the re-rated pressure, whichever is applicable. (iv) Any welding and the inspection of the rebuilt cylinder must be in accordance with the requirements of the applicable cylinder specification and the following requirements: (A) Rebuilding of any cylinder involving a joint subject to internal pressure may only be performed by fusion welding; (B) Welding must be performed on an area free from contaminants; and. Procedure A reports percent pentane-insolubles and the percent pentane-and-toluene-insolubles. The characteristic appearance of a transparent liquids is partially determined by its refractive index, or ability to bend light. This contact form is only for website help or website suggestions. Representation means attesting through documenting, in writing or by marking on the tank (or jacket), that a tank car is qualified and railworthy. Each facility performing eddy current examination with visual inspection must develop, update, and maintain a written examination procedure applicable to the test equipment it uses to perform eddy current examinations. - Other Regulations Relating to Transportation, - Pipeline and Hazardous Materials Safety Administration, Department of Transportation, https://www.ecfr.gov/current/title-49/subtitle-B/chapter-I/subchapter-C/part-180, Continuing Qualification and Maintenance of Packagings, Qualification, Maintenance and Use of Cylinders. Many substances take on a solid-like amorphous state when observed at low temperatures. Reported are the initial, final and change in worked penetration values. The density is reported in kg/cubic meter. need only be removed to the extent required for reliable appraisal of the condition of the portable tank. AD System with graphics and Service Bulletins. If the coolant degrades and becomes acidic during use, metals in the cooling system may be at risk of acid damage, hence coolants often contain buffers and acid-absorbing additives. The grease is then placed in a pressure vessel, pressurized with oxygen and heated to the test temperature. These changes may alter the properties of the grease. Bombardier is a global leader in aviation, creating innovative and game-changing planes. Moreover we provide excellent services in the field of Calibration. Steel panels are sand blasted and cleaned. A cylinder conforming to specification DOT 3A, 3AA, 3B, 4BA, or 4BW having a service pressure of 300 psig or less and used exclusively for methyl bromide, liquid; mixtures of methyl bromide and ethylene dibromide, liquid; mixtures of methyl bromide and chlorpicrin, liquid; mixtures of methyl bromide and petroleum solvents, liquid; or methyl bromide and nonflammable, nonliquefied compressed gas mixtures, liquid; commercially free of corroding components, and protected externally by a suitable corrosion resistant coating (such as galvanizing or painting) and internally by a suitable corrosion resistant lining (such as galvanizing) may be tested every 10 years instead of every five years, provided a visual internal and external examination of the cylinder is conducted every five years in accordance with CGA Pamphlet C-6. Reported is the maximum cooling rate, and the temperature at which it occurs, and the time it takes to reach 600oC, 400oC and 200oC. The owner must retain the certificate, as specified in this section. Such linear sections are illustrated for the experimental cathodic polarization curves in Figures 4.13, 4.14, 4.15, and 4.16. In cases of thin lubricant films under boundary conditions, lubricity and film-forming properties become extremely important. It must include at least the inspection and a pressure test according to paragraph (e) of this section. Tall oil fatty acids are isolated from the bi-products of paper production. 180-8, 60 FR 49079, Sept. 21, 1995, as amended by Amdt. Dilutions by weight % as follows are tested (0.5, 1, 1.5, 2, 2.5, 3, 4, 5, 7 and 10%). Grease for automotive wheel bearings for temperatures between -40C and 160C with occasional excursions to 200C. (Refer to CGA C-6 or C-6.3 (IBR, see 171.7 of this subchapter), as applicable, regarding cylinder weakening.) The inner ring is rotated at one revolution per minute and the resulting force on the outer ring is measured. In Figure3.9(a), Cu oxidizes at E>0.2V to a hydrated Cucarbonate complex, which changes the Tafel slope of Cu in the corresponding voltage region. The congealing point (the temperature at which the wax ceases to flow) gives valuable information needed in formulating products. A sample of grease is heated in the drop point cup until the sample melts or separates and runs out a small hole in the bottom of the cup.

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