Japanese Steel Bucket Association Working Group members: JFE Container Co., Ltd. Totofumi Fuga 傣?X (Daikan) Co., Ltd. Torao Sagawa (Torao Sagawa) Japan Steel Bucket Co., Ltd. Takashi Okita Japanese Steel Bucket Co., Ltd. Kazuyuki Suzuki Toho Thin Sheet Products Co., Ltd. Kenji Mishina Consumer demand -- The chemical industry has the highest requirements for steel drums -- strongly demanding that the steel drums be clean. * Chemical products require that the surface of the raw material grease stains should go clean. * In particular, electronic raw materials, fine chemical products, and precision equipment composed of tree fingers are required to be cleaner in the barrel. ICDM standard recommendations * At the ICDM International Conference, SEFA proposed the development of standards for the internal cleanliness of steel drums. * Based on this proposal, SSCI and JSDA began to study this proposal. Changes in use of new steel barrels Study on Fine Particle Pollution in Steel Drum Composition of particulate pollutants --Measurement methods: Use a microscope to observe the filtered residue --ingredient: (1) Coating Fragments (Carbon, Titanium, Magnesium, Silicon) (2) Dust (silicon, aluminum, calcium) (3) Iron Powder (Iron) (4) Particles (zinc, iron) that have come off the closure (5) Fiber (Carbon) (6) Toner (carbon) The appearance of contaminated particles collected from the interior of the drum - Examples of microslag on the filter - - Examples of microscope photos - The process of contaminating particles into the steel drum (1) Into the seam at the time of phosphating → Iron (iron), Dust (silicon, aluminum, calcium), Fiber (carbon) (2) The outer coating film enters from the barrel plug → Metal particles (zinc, iron) entering from the sealer, particles (carbon, titanium, magnesium, silicon) falling off from the inner coating (3) After leaving the factory (closer is opened by the consumer) → Particles (zinc, iron) entering from the sealer, dust (silicon, aluminum, calcium) falling from the top of the barrel, and fragments (carbon, titanium, magnesium, silicon) falling off from the inner and outer coatings - Process chart - Steel drum internal cleanliness measurement method JSDA - 13 years ago there was a draft instrument design - A new working group was established in June 2002. (1) Study of existing environmental conditions Proposed revision of a draft standard (2) Study using SEEA recommendations Purpose: To amend a draft standard as proposed JSDA measurement method --cleaning method-- JSDA measurement method - Pollution particle measurement method - JSDA, SEFA and SSCI Measurement Methods JSDA SEFA SSCI (1) Drums of concern Closed steel drums, 200 liters or more unspecified (2) Cleanliness Evaluation Project Pollution particle weighing and counting The weight of the pollution particles (3) Grading criteria NAS 1638 standard unspecified (4) Collection of pollution particles Inject 5 liters of isopropanol into the interior of the drum and collect the weighed washing solvent Collecting contaminated particles (dust) with a vacuum filter (15 l/s) (5) Pollution particle measurement Calculate the contaminated micro-particles in the wash solvent and weigh the filtered residue Use filter to collect and weigh SSCI measurement method - Overview - Comparison of JSDA, SEFA and SSCI Measurement Methods JSDA SEFA Comparison of SSCIJSDA, SEFA and SSCI Measurement Methods advantage Can get 5-15 micron particle size data. Comparable data can be obtained when filled with liquid. Suitable for chemical suspension problems. Simple operation can be outside the production line. It is most suitable for the production of standard barrels. Suitable for coating raw materials (prevent clogging of the coating filter) Shortcomings Measurement must be done in the laboratory. Only data on hard, contaminating particles can be obtained. Only pay attention to the outside of the pollution particles into the barrel. It is more difficult to measure for closed drums (simple to open drums). Japanese steel drum cleanliness measurement example Steel drum type Manufacturer Contamination of 200 litres steel drums containing liquids Number of particles: each/100 ml Particle weight Particle size (microns) Standard level Mg/barrel Standard level 5-15 15-25 25-50 50-100 >100 Unlined steel drums A 510 18 4 0 0 level 2 0.4 Level 100 434 20 5 0 0 Level 1 0.5 Level 100 B 113 12 5 0 0 Level 0 0.3 Level 100 433 42 14 1 0 Level 1 0.6 Level 100 C 459 8 0 0 0 Level 1 0.4 Level 100 529 12 3 0 0 level 2 0.7 Level 100 D 2777 57 11 0 0 level 4 1.3 Level 100 2554 33 7 0 0 level 4 1.6 Level 100 E 210 14 3 0 0 Level 0 0.2 Level 100 186 15 6 1 0 Level 0 0.6 Level 100 Lined steel drums A 330 37 18 3 0 level 2 0.5 Level 100 128 17 8 1 0 Level 1 0.5 Level 100 B 394 61 25 3 0 level 2 1.1 Level 100 162 32 16 3 0 Level 1 0.6 Level 100 C 309 46 25 5 0 level 2 1.0 Level 100 285 39 20 3 0 level 2 0.8 Level 100 D 147 twenty four 14 4 0 level 2 0.6 Level 100 738 44 18 3 0 level 2 0.6 Level 100 E 126 twenty four 15 3 0 Level 1 0.3 Level 100 246 36 18 4 0 level 2 0.6 Level 100 JSDA example 1. No lining steel drum Quantity: Standard level 0-4 Weight: 0.2-1.6 mg/barrel Standard level 100 2. With lining steel drum Quantity: Standard Level 1-2 Weight: 0.3-1.1 mg/barrel Standard level 100 Japan's measures to ensure the cleanliness of steel drums (1) Simplify the production process (to avoid long-term inventory, if it can not be avoided, it should be dust protection) (2) Dust protection during product transportation (3) Do not touch chemical fiber gloves during drum phosphating and sealing operations. (4) Do not apply paint to the threaded part of the sealer. Use an external thread sealer. Next plan Drafting an ICDA standard Promoting JSDA methods among consumers Drafting of measurement methods for drafting open steel drums and medium and small steel drums Study methods for measuring other contaminants such as oils.
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Standardization of Steel Tank Internal Cleanliness Measurement Methods