A mobile tube pressure testing machine

Abstract

A mobile tube pressure testing machine has been researched and developed to replace the regular stationary pressure testing machine in order to facilitate services for various units of the Royal Thai Navy that are located in remote areas from testing units. This mobile pipe pressure tester is used for testing the strength of various types of high pressure hose used in the Royal Thai Navy such as the carbon dioxide extinguishers and scuba cylinder. In order to be safe for use according to the National Fire Protection Association (NFPA 10) Standard for Portable Fire Extinguishers 2002 Edition. In this research, using the designed hydrostatic test system with the water Jacket 920 mm high, 235 mm diameter, 20 mm thickness, mounted to the wheel at the bottom. There is 40 kg empty tank weight and 3,000 psi high pressure water pump. The research showed that the permanent expansion rate is 0.1% error compared to the standard pipe test and the test result with fire hose size 15 lbs. with 2% difference compared to the results of routine testing machines which assumes that the mobile tube pressure tester is standard and practical.