American Petroleum Institute

Choke and Kill Equipment - SECOND EDITION; ERTA: JULY 2015
 N SPEC 16C

Annotation

This specification establishes the minimum requirements for the design and manufacture of the following types of new equipment:

a) articulated choke and kill lines;

b) choke and kill manifold buffer chamber;

c) choke and kill manifold assembly;

d) drilling choke actuators;

e) drilling choke controls;

f) drilling chokes;

g) flexible choke and kill lines;

h) union connections used in choke and kill assemblies;

i) rigid choke and kill lines;

j) swivel unions used in choke and kill equipment.

These requirements were formulated to provide for safe and functionally interchangeable surface and subsea choke and kill system equipment utilized for drilling oil and gas wells.

Technical content provides the minimum requirements for performance, design, materials, welding, testing, inspection, storing, and shipping.

See 4.2 for requirements on additional components that may be included in choke and kill system equipment.

If product is supplied bearing the API Monogram and manufactured at a facility licensed by API, the requirements of Annex A apply.

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