BS ISO 19882:2018 pdf free.Gaseous hydrogen—Thermally activated pressure relief devices for compressed hydrogen vehicle fuel containers. Materials normally in contact with hydrogen shall be determined to be acceptable in hydrogen service, with the consideration of hydrogen embrittlement and hydrogen accelerated fatigue. The performance tests cannot guarantee that all cases and conditions of the hydrogen service are validated, so it is still incumbent on the designer/builder to carefully screen materials of construction for their intended use. The materials and design shall be such that there is no significant change in the functioning of the device, deformation or mechanical change in the device, and no harmful corrosion, deformation or deterioration of the materials when subject to the service conditions given in Clause 4. NOTE 1 Material performance data and/or acceptance criteria in hydrogen environments can be found in the ISO 11114 series, the Sandia National Laboratory Technical Reference for Hydrogen Compatibility of Materials, ANSI/AIAA G-095, ANSI/CSA CHMC 1, ASME B3L12, SAE J2579:2013, Appendix B or in equivalent national requirements. NOTE 2 Some fusible alloys can contain heavy metals that can be considered environmentally unacceptable by some customers and which can be prohibited by some jurisdictions. Non-metallic materials normally in contact with hydrogen…

BS ISO 8178-6:2018 pdf free.Reciprocating internal combustion engines – Exhaust emission measurement. Table A.1 includes the information essential for engine approval, such as engine identification, engine application, test cycle and test identification. The emission test results may be listed for different test cycles, if applicable. The gaseous and particulate emissions shall be expressed in grams per kilowatt hour whenever possible. Other units shall be indicated if used according to the provisions laid down in the Scope of this document. The smoke test results shall be listed for the smoke cycle applicable to the indicated application. The smoke values shall be expressed per metre whenever possible. 5.3 Engine information Table A.2 contains the basic features of the engine under test. If more information is requested by other parties, this can be provided. Table A.3 contains other information on the engine under test pertinent to the identification of the engine family or group. These features are derived from ISO 8178-7 for engine family and ISO 8178-8 for engine group. If the engine family or group concept does not apply for the engine under test, Table A.3 does not need to be submitted. 5.4 Ambient and engine test data For steady-state discrete mode…

BS ISO 7409:2018 pdf free.Fertilizers一Marking 一Presentation and declarations. Marking can take the form of package markings, quality assurance documents, labels, electronic labels, etc. The information can be added to bags by printing, labels, stickers, etc. The use of electronic labels, such as two-dimensional (2D) codes, is encouraged. Electronic labels should be legible and conspicuous on a discrete area of the principal display panel and shall include, at a minimum, the information related to package markings. 7 Pre-marked containers 7.1 Containers holding more than 25 kg (or 25 I) of fertilizer 7.1.1 Marking technical details Position: A rectangular space for marking shall be located in the centre of one of the main faces of the container/label. The edges of the space shall be parallel to the edges of the container. Measurement: Its edges shall be at least 65 % of the length of the container. The total area for marking shall be at least 10 % of the face selected. Label information: The technical information of the label on the container should be easy to read. Any picture, brand or logo used in the marking should not obstruct the quick identification of text messages. Declarations shall be marked within the above-mentioned…

BS ISO 6280:2018 pdf free.Plain bearings  – Requirements and guidance on backings for thick-walled multilayer bearings. There are no normative references in this document. 3 Terms and definitions No terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — ISO Online browsing platform: available at https://www.iso.org/obp — IEC Elect ropedia: available at http:J/www.electropedia.org/ 4 Backing materials 4.1 General Steel and cast steel, cast iron with lamellar and spheroidal graphite as well as cast copper alloys are used as backing materials. For cast iron backing, additional dovetailed grooves may be used on bond surface for mechanical anchoring. 4.2 Steel and cast steel Before lining, the backing is heat-treated for normalizing and Stresses relieving. Typical contents of elements for bonding: — C < 0.25 % (mass fraction); — Cr 1,1 % (mass fraction); — Ni < 0,5 % (mass fraction). The hydrogen contents of a backing having a thickness of 40 mm or more shall be not more than 1,7 ppm. A properly-controlled process shall be used to reduce the hydrogen content to a level that ensures trouble-free running of the bearing during its initial period operation. The bond…

BS ISO 1835:2018 pdf free.Round steel short link chains for lifting purposes一Medium tolerance sling chains – Grade 4, stainless steel. The bases for calculation of the values for the dimensions listed in Table 1 are given in Annex A. The bases for calculation of the values for the mass per metre listed in Table B.1 are given in Annex B. The nominal diameter, dn, of the sling chain corresponds to the nominal diameter of the steel wire as presented in ISO 16124, or bar as presented in ISO 1035-1, from which the sling chain is made.Preferred nominal diameters are given in Table 1 column 1. Other nominal diameters may be used, provided the corresponding dimensions and tolerances are calculated in accordance with Annex A. The sling chain shall comply with the requirements of ISO 1834 as well as those of this document. 5.2 Material The steel used shall be austenitic stainless steels with molybdenum and shall be resistant against intergranular corrosion, for example the steel with the ISO name X6CrNiMoTi17-12-2 and the ISO number 4571-316-35-I according to ISO 15510. After solution annealing intergranular corrosion is unlikely at a service temperature of +400 °C and with an extra low carbon content…

BS EN ISO 6892-2:2018 pdf free.Metallic materials – Tensile testing Part 2: Method of test at elevated temperature. The force-measuring system shall be set to zero after the testing equipment has been assembled but before the test piece is actually placed in the gripping jaws. Once the force zero point has been set, the force-measuring system may not be changed in any way during the test. NOTE The use of this method ensures that the weight of the gripping system is compensated in the force measurement and that any force resulting from the clamping operation does not affect the force zero point. 10.2 Gripping of the test piece, fixing of the extensometer and heating of the test piece, not necessarily in the following sequence 10.2.1 Method of gripping For requirements concerning the method of gripping, see ISO 6892-i. NOTE Maintaining a very small tensile load (e.g. test machine in load control) during heating period and soaking time can prevent possible compressive stresses due to thermal expansion. 10.2.2 Fixing of the extensometer and establishing the gauge length 10.2.2.1 General Different methods of establishing the extensometer gauge length are used in practice. This can lead to minor differences in the test results….

BS EN ISO 8654:2018 pdf free.Jewellery – Colours of gold alloys – Definition, range of colours and designation [ISO 8654:2018). The samples to be measured shall have a flat and polished surface to be used as a measurement area. The measurement area shall be exempt of defect. The finishing (polishing and washing) shall be (re)done until a mirror surface is achieved (Y reaches a constant value). After polishing, the sample colour measurement shall be made within 120 mm maximum. NOTE Polishing, washing and environment conditions can greatly affect the colour. 5.2.1.2 Metallographic preparation Metallographic preparation is made with a final polishing with broadcloth charged with an abrasive solution. The solution contains 1 I.Im sized abrasive particles. 5.2.1.3 Sample cleaning The recommended sample cleaning is done by gently wiping the surface with a clean soft cloth (microflbre) and some isopropylalcohol (IPA). 5.2.2 Measurement apparatus 5.2.2.1 General The measurement apparatus for the colour measurement of a gold alloy shall be in accordance to CIE Publication No. 15. 5.2.2.2 Reference apparatus The reference apparatus for the colour measurement of a gold alloy is an integrating sphere spectrophotometer able to measure spectral reflectance, with a measurement geometry compatible with designation di:8° or 8°:di (specular…

BS ISO 15461:2018 pdf free.Steel forgings一Testing frequency, sampling conditions and test methods for mechanical tests. 5.1 For the testing frequency of room temperature tensile tests and of impact tests, the requirements given in JJ1 to apply. 5.1.1 The product standard or order shall specify, by reference to the appropriate symbol(s) in Table 1. column 1, the following: a) the composition of the test unit as defined in Table 1. columns 2 to 8; b) whether uniformity checks by hardness tests in accordance with Table 1. column 9 are required and, if so, the percentage of products to be subjected to the hardness tests; c) the number of sample products to be taken from the test unit. (See the explanations in Table 1. footnote a, for replacing the letter “n of the symbol by the mass of the test unit up to which the taking of one sample product is sufficient.) NOTE Less stringent requirements for the composition of the test unit can be compensated by more stringent requirements for the number of sample products to be tested. Therefore, for example, a test unit characterized by the symbol CH5 can be regarded as equivalent to a test unit characterized by the…

BS ISO 13605:2018 pdf free.Solid mineral fuels – Major and minor elements in coal ash and coke ash – Wavelength dispersive x-ray fluorescence spectrometric method. Discs may be prepared by the casting or press-quenching technique. Both methods will produce glass discs of adequate quality. If the casting technique is used, the sample may be fused with the flux in a crucible and then poured into a separate mould; if an appropriately shaped crucible is used, the fusion may be carried out and the glass allowed to cool in the same crucible. A conventional electric furnace, high-frequency furnace, or gas burner may be used for heating. Disc-making machines are available commercially, and these may be used to fuse and cast the discs. Prior to measurement, discs shall be inspected visually, paying particular attention to the analytical surface. The discs shall not contain undissolved material, and shall be whole and free from crystallization and bubbles. Defective discs shall be re-fused or discarded and substitute discs prepared. Laboratory-prepared ashes for XRF analysis should be freshly prepared; if not, It will be necessary to reheat these to the ashing temperature and hold for 15 mm at this temperature prior to preparation of the XRF…

BS ISO 10804:2018 pdf free.Restrained joint systems for ductile iron pipelines – Design rules and type testing. 4.1 All restrained joints for ductile iron pipes, fittings and other components shall be designed in accordance with this clause. If the design of a restrained joint has been tested and successfully used for a minimum of 10 years, a type test as described in Clause 5 is only required for a significant change in the design which could adversely affect the performance of the restrained joint. 4.2 The minimum thickness of the spigot for restrained joints shall allow any necessary welding or loading from attachments (e.g. gasket teeth). This may result in a pipe thicker than the corresponding pressure class thickness of the pipe. The manufacturer shall declare the pipe thickness for their restrained joints. 4.3 The design safety factors with respect to failure against axial forces due to internal pressure shall be such that the joints shall withstand a type test of 1,5 times the allowable operating pressure (PFA) pIus 5 bar (5 x 105 Pa).1) 4.4 The joints shall be type tested to a negative pressure of 0,9 bar (9 x 104 Pa) below atmospheric pressure [approximately 0,1 bar (104…