The Fragant power plant group is located in the Möll valley of the Tauern mountains in Austria and is operated by Kärntner Elek- trizitäts AG (KELAG). It is the company’s core for generating power and a mainstay for safe and reliable power supply in the federal province of Carinthia.

Keeping Natural Gas Liquid (NGL) pipeline components operating in optimal condition is an ongoing challenge for the oil and gas industry. Rising temperatures in the liquid pumps and the resulting issues for their seals represent one such challenge.

This article addresses the normal and excessive leakage rates of mechanical seals in main pipeline pumps that transport Natural Gas Liquids such as ethane, propane, butane and various mixtures of these liquids.