The first zone classified oil and gas facility in North America

This paper discusses the Alpine Project, distinguished as the first major new complete oil production facility in North America to utilize the Zone method of area classification. The challenge for everyone involved in all aspects of this project was that it is the first project of its type in North America using National Electrical Code (NEC) Article 505 for Zones. Insight is provided covering the decision making process that led to the use of the Zone Classification System, as well as the opportunities, challenges and problems encountered in implementation of the use of products using the protection techniques for the Zone System. The authors provide the experiences of the owner, design engineering firms, manufacturers, approval agencies, constructors and the authority having jurisdiction. They share lessons learned throughout the design and construction and make recommendations for users who may be considering the use of Zone Classifications as well as make suggestions concerning future proposals to improve requirements to the NEC