During the past few years, end users in the Middle East power generation industry have considered specifying pumps according to American Petroleum Institute (API) standards. The standards, according to the API website, "are designed to assist industry professionals improve the efficiency and cost-effectiveness of their operations, comply with legislative and regulatory requirements, safeguard health, and protect the environment." Typically, the standards require a more robust equipment design. Two such standards commonly apply to pumps: API Standard 676 for rotary positive displacement pumps and API Standard 610 for centrifugal pumps. As safety standards become more stringent, API standards, or their variations, could more frequently be implemented in industries such as power generation. Understanding what these standards mean and how to apply them can be beneficial for end users.
Safety concerns have prompted dialogues between plant operators and manufacturers on customized, certified pumps.
01/22/2015
Complete fuel injection skids, such as the one pictured for combustion turbine service in power generation applications, incorporate a high-pressure rotary screw pump. These pumps can be built to meet API specifications should safety standards become more stringent.
In power generation, applications include fuel injection, fuel transfer or booster services. The standard helps ensure the integrity of the pump's envelope in the event of an emergency. The most recent version of API Standard 676 (Third Edition, November 2009) specifically states that "... in auxiliary services (e.g., lube oil systems), manufacturer's standard with demonstrated experience is acceptable." In most cases, the API 676 specification would be invoked only when handling fuel.
A version of this article appeared in the November 2014 edition of Pumps & Systems magazine.