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11/11/2018 - API 6A, 21st Edition


Specification for Wellhead and Tree Equipment

API 6A, 21st edition - Specification for Wellhead and Tree Equipment - has been published, effective date November 2019.

Following Key Changes:

A complete reorganization of the document—quality requirements are now grouped by specific activity and not by PSL, making it easier to determine the specific requirements for all PSLs in one location and not spread throughout the document.

Uniformity in the layout of the product-specific section.

A total revision of all of the sizing tables, including associated figures, to allow for clearer understanding of the requirements.
The tables exist as a full set in SI (metric) units and as a separate, exact set in USC (imperial) units.

Uniform use of product terms throughout the document.
Revision of the annexes:
Incorporation of annexes, in the body of the document (former Annex L and Annex O);
Former Annex J will be published as a new document, 6AR; former Annex H will be published within TR6RT; and former Annex I will be deleted in lieu of fully referencing 6AV1;
Former Annex E and Annex N were withdrawn as they are no longer needed/applicable to the document.

Addition of a new product (proposed for monogramming), boarding shutdown valves, developed with support of the regulatory community.
The casing and tubing hangers product line is better defined for slip and mandrel hangers, two separate products. So, in effect, there will be three new products.

Removal of fluid sampling devices.

Integration of tubing head adapter requirements into overall head requirements for a more integrated product.

Required minimum PSL depending on the pressure rating and material class. Revised PSL 4 to target critical service equipment.
Heat treatment requirements now normative.

Removal of PR1 from design validation annex.

Addition of pressure boundary qualification requirements.

Creation of a new section on records and records control.

Factory acceptance testing (FAT) removed from the quality section; section reorganized and requirements presented in a more logical order.

Marking requirements now target specific products and not product families to better target specific marking needs.

Required minimum 20E and 20F BSL for bolting.


The API Monogram Program effective date will be November 1, 2019

Current licensees shall ensure that products manufactured on and after November 1, 2019 meet the requirements of API 6A, 21st edition in order to be monogrammed.

Also, effective November 1, 2019, API 6A audits will be conducted to the 21st edition of the document.

Source: API.org

 

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