5 Apparatus5.1 Extrusion plastometer5.1.1 General. The basic apparatus comprises an extrusion plastometer operating at a fixed temperature.The general design is as shown in Figure 1. The thermoplastic material, which is contained in a vertical cylinder, is extruded through a die by a piston loaded with a known weight. The apparatus consists of the following essential…

6.3.4.12 Watertightness a) A 1.5 m length of completed cable with its ends unsealed shall be installed through a gland in a testtank with approximately 150 mm of the cable protruding into the tank. The gland to be used for this test shall be of the type fitted in submarine pressure–tight bulkheads as shown on…

8.1 Test Criteria8.1.1 Materials shall be classified V-0, V-1, or V-2 on the basis of results obtained on small bar specimenswhen tested as described in (8.2.1 – 8.5.6).8.1.2 Some materials, due to their thinness, distort, shrink, or are consumed up to the holding clampwhen subjected to this test. These materials may be tested in accordance…

2 PrincipleA piece of PVC-U pipe, of specified length, chamfered at one end to an angle dependent on its thickness, is immersed for (30 ± 1) min in dichloromethane, at a temperature T specified by the referring standard, to verify that the PVC-U is not attacked at that temperature. For safety reasons, the surface area…

3 PrincipleThe scattered and unscattered light energy of a wavelength of 540 nm to 560 nm passing through a test piece cut from a pipe or fitting is measured and expressed as a percentage of the incident light energy on the test piece. 4 Apparatus4.1 Photoelectric cell, used such that the response of the reading…

4 Apparatus4.1 DSC instrument, and associated software, calibrated.Calibration should be carried out using at least two different metals. An instrumental baseline must be obtained with an empty sample pan and reference pan in place, and with temperature settings and purge gas identical to the settings to be used for the sample analysis.4.2 Aluminium sample pans.4.3…

4 Apparatus4.1 Apparatus for procedure A4.1.1 A suitable apparatus for procedure A is shown in Figure 1. 4.1.2 Enclosed tank, capable of being used at the appropriate test pressure and receiving the testspecimen. The ends of the test specimen shall pass through the walls of the tank, so that the inside of thepipe is open…

3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply 3.1flexural strainε xnominal value of the strain in the tensile surface of a flat test specimen of thickness h, bent over the segment of a circle with radius r, calculated from the equation 3.2strain valueone of a series of strain…

1 Scope1.1 This part of ISO 22088 provides information and general guidance relevant to the selection of the testmethod to be used to determine environmental stress cracking (ESC).1.2 Part 2 describes a method in which a test specimen is subjected to a constant tensile load, whileimmersed in a stress cracking agent at a specified temperature….

12 Piston/plunger assembly 12.1 Design The design of the plunger and push-button of the syringe shall be such that, when the barrel is held in one hand, the plunger can be depressed by the thumb of that hand. When tested in accordance with annex B , the piston shall not become detached from the plunger….