scope:

SECTION 1 SCOPE

1.1 Coverage. This specification covers the minimum requirements for materials, design, fabrication and testing of a conventional lease glycol type gas dehydration system utilizing triethylene glycol as the desiccant. Conventional systems are normally designed to operate an an inlet temperature between 60°F and 120°F and at or above 400 psig pressure but not to exceed pressure limited by ANSI B16.5 Class 600 flanges. This specification encompasses a system which includes an inlet separator, a glycol/gas contractor, gas/glycol heat exchanger, glycol reboiler, glycol surge tank, glycol circulating pump(s), filter(s), glycol/glycol heat exchanger, glycol flash separator (optional) and skid(s). While this specification does not preclude dehydrators for service on offshore platforms, it should be noted that considerable additional requirements may apply to offshore units.

The manufacturer of the completed glycol type dehydration unit shall be responsible for assuring that all material, design, fabrication procedures, examinations, inspections, and tests required by this specification have been met.

Appendix A through H, Section 2, and Section 3 of this specification are for information only and are not to be considered as mandatory.

1.2 Referenced Documents. Industry Codes, Specifications and Recommended Practices are referenced and as applicable, become requirements of this specification. The latest editions and revisions of the specification, and the referenced industry codes, specifications, recommended practices and other requirements current at the time of manufacture should be considered applicable at the time of manufacture of glycol type gas dehydration units. Referenced documents may be obtained from the following sources.

ANSI: American National Standards Institute, 1430 Broadway, New York, NY

API: American Petroleum Institute, Production Department, 2635 One Main Place, Dallas, Texas 75202-3904

ASME: American Society of Mechanical Engineers, 345 E. 47th St., New York, NY 10017

ASTM: American Society for Testing and Materials, 1916 Race St., Philadelphia, PA 19103

AISC: American Institute of Steel Construction, Inc., 400 N. Michigan Ave., Chicago, IL 60611

NACE: National Association of Corrosion Engineers, P.O. BOX 218340, Houston, TX 77218

TEMA: Tubular Exchanger Manufacturers Association, New York, NY 10017