TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 CONT

Thermal Vacuum Test Chamber ... The purpose of the Thermal Vacuum test is to verify that the satellite will work correctly in the extreme temperatures and low pressures experienced in space. The satellite is suspended from a test fixture in the center of the tank, which is pumped out to a pressure about a billion times smaller than atmospheric pressure. The entire chamber wall can be heated and cooled to simulate the effects of solar heating when the satellite is in sunlight and the cold of outer space when the satellite is in the shadow of the Earth.  3, fiche 1, Anglais, - vacuum%20test%20chamber

Fiche 1,  Justifications,  Français

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 OBS

vacuum box: A device used to assess the integrity of field seams in membrane liners.  1, fiche 2, Anglais, - vacuum%20chamber%20seam%20test

Record number: 2, Textual support number: 2 OBS

Seam testing Methods ... Vacuum chambers (boxes) have been used where a 3-ft-long box is placed over the seam and a vacuum af approximately 2.5 lb/in.² applied. When a leak is encountered the soapy solution originally placed over the seam shows bubbles. These bubbles are due to air entering from beneath the liner and passing through the unbonded zone. The test is slow to perform and it is often difficult to make a vacuum-tight joint at the bottom of the box where it passes over the seam edges.  1, fiche 2, Anglais, - vacuum%20chamber%20seam%20test

Fiche 2,  Justifications,  Français

Record number: 2, Textual support number: 1 OBS

Contrôle d'étanchéité de soudure sur membrane bitumineuse au moyen d'une cloche à vide.  2, fiche 2, Français, - contr%C3%B4le%20d%27%C3%A9tanch%C3%A9it%C3%A9%20de%20soudure%20par%20cloche%20%C3%A0%20vide

Record number: 2, Textual support number: 2 OBS

Double soudure: Modalité d'assemblage comportant la réalisation simultanée de deux joints parallèles, effectués en soudure automatique et séparés par une zone non soudée. Ce canal central sert généralement à faire des tests d'étanchéité du joint, sous pression.  2, fiche 2, Français, - contr%C3%B4le%20d%27%C3%A9tanch%C3%A9it%C3%A9%20de%20soudure%20par%20cloche%20%C3%A0%20vide

Fiche 2,  Justifications,  Espagnol