Laserfiche WebLink
L33f15/1995 16: 29 805-327-9365 PAGE ESi 06 <br /> . . . , f <br /> MAR 16 ' 95 17: 27 FROM TOTAL CONTAINMENT PAS( . 0CG <br /> - 6 - <br /> J! Sulphuri.c Acid (p93); <br /> Toluene3, <br /> Ithanol i .and <br /> methanol. <br /> 1 Following the prescribed exposure period, the coupons. shall be <br /> crit into test specimens and the tensile strength determined in accordance <br /> with the standard Test Method for Tensile Properties of plastic, ASPM D634, <br /> using a croushead speed applicable for the material tested. The hardhesss of <br /> the material is to be deetcrmined wing the teat msathods and Type A durometer <br /> apparatus specified in the Standard Test Method for Rubber Property - <br /> Dur=cte;r Hardness, AM DZZ40. Flexural tests shall be performed in <br /> accnrdance with the require is cantaiaed in the Method of Test for Flexural <br /> Properties of Plastics, A= X190. <br /> fest coupons, as specified in Clause 5.1.2 are to be subjected <br /> d <br /> ta,r 72-0 h exposure in an accelerated light and .water .eYpoesure: appArattis, as <br /> specified in Clauses 5.1.5 and 5.1.6. <br /> The apparetug used is to provide ultraviolet light from: tW0 <br /> enclused carbon arcs formed between Vertical electrodes 12.7 mu in diameter, <br /> located ,t the centre of a revolvable vertical metal cylinder 787 mm in <br /> diameter and 451 mm high. The arcs are to opaerate with approximately 15 to <br /> 17 A (enc) and the potential across the arcs is to be approximately- 120 to <br /> lJ45 V. The arcs are to beenclosed by clear globes of No. 9200-PX Pyrex <br /> glass, <br /> ,51.6 The coupons are to be vertically mounted ou the inside of the <br /> cylinder, faciag the; arcs, and the cylinder is to be rotated mut the arcs <br /> at 1 it/min. A system, of nozzles is to be provided so that each sample is <br /> sprayed in turn with water as the cylinder revolves. Daring each 20 min <br /> operating cycle, each sample is to be exposed to light from the arcs for <br /> 17 mire and to water spray with light for 3' min. The temperature -within the <br /> cylknder while the: apparatus is in operation is to bt 63 a 5•C. . . <br /> 5.1,.7 Following the exposure, hardness and flexural stirength tests <br /> shall be conducted as specified in Clause 5.1.3. <br /> 5-2 PRESSMM AND VACUUM ` 3STS <br /> 5,2.1 Samples of each size of the pipe and fittings are tv he <br /> aeefeembied in accordance with the wanufecturer'ae inatructions. With the <br /> sample totally immersed in water or antifreeze solution, an aerostatic <br /> pressure of twice the rated pressure, minimum 70 kFa, is to be applied, helot <br /> for 60 min, and obeervatious matte for leakage. This test is to be conducted <br /> at temperatures of -40'C, 23'C and 50*C- <br /> �.2-Z A vacuum of 35 kFe shall then be applied to the piping <br /> as aamblies and beeld for 60 min. They interior of the assembly .shall be <br /> check-Qd for tha presence of water. <br />