Api 16a 4th edition pdf11/12/2022 ![]() ![]() The formulation and publication of API publications is not intended in any way to inhibit anyone from using any other practices. These publications are not intended to obviate the need for applying sound engineering judgment regarding when and where these publications should be utilized. API publications are published to facilitate the broad availability of proven, sound engineering and operating practices. Every effort has been made by the Institute to assure the accuracy and reliability of the data contained in them however, the Institute makes no representation, warranty, or guarantee in connection with this publication and hereby expressly disclaims any liability or responsibility for loss or damage resulting from its use or for the violation of any authorities having jurisdiction with which this publication may conflict. API publications may be used by anyone desiring to do so. Users of this specification should consult with the appropriate authorities having jurisdiction. ![]() Classified areas may not vary depending on the location, conditions, equipment, and substances involved in any given situation. Neither API nor any of API's employees, subcontractors, consultants, committees, or other assignees make any warranty or representation, either express or implied, with respect to the accuracy, completeness, or usefulness of the information contained herein, or assume any liability or responsibility for any use, or the results of such use, of any information or process disclosed in this publication, or represent that its use would not infringe upon privately owned rights. With respect to particular circumstances, local, state, and federal laws and regulations should be reviewed. Special Notes API publications necessarily address problems of a general nature. The previous "Upper Limit" from 3rd edition and current "Extreme temperature limit" from 4th edition have the same design verification testing (1 hr hold time at design pressure).Specification for Drill-through EquipmentĪPI SPECIFICATION 16A FOURTH EDITION, APRIL 2017 EFFECTIVE DATE: OCTOBER 1, 2017 Interested to hear how companies are treating the "Continuous Elevated Temperature Limit" versus the "Extreme Temperature Limit" in API 16A 4th edition.ĪPI Spec 16A 4th edition has three temperature ratings for Nonmetallic Sealing Materials "Low Temperature Limit, Continuous Elevated Temperature Limit, Extreme Temperature Limit".ĪPI Spec 16A 3rd edition had two temperature ratings for Nonmetallic Sealing Materials "Lower Limit" and "Upper Limit". BOP Elastomer Temperature Ratings (API 16A 3rd versus 4th edition) ![]()
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