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API RP 4G-2016 pdf free download

API RP 4G-2016 pdf free download.Operation, Inspection, Maintenance, and Repair of Drilling and Well Servicing Structures.
Scope 1.1 Objective This document provides guidelines and establishes recommended procedures for inspection, maintenance, and repair of items for drilling and well servicing structures, in order to maintain the serviceability of this equipment. The information in this document should be considered as supplemental to, and not as a substitute for, the manufacturer’s instructions and the recommendations in API 54. 1.2 Structures Covered Items of drilling and well servicing structures covered by this document include: — masts/derricks and accessories; — substructures and accessories. NOTE 1 Crown block sheaves and bearings are covered under API 8B. NOTE 2 Offshore masts, derricks, substructures and accessories are not under the scope of this document relative to 6.2.4, Category IV inspection requirements. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. API Specification 4F, Drilling and Well Servicing Structures AISC 335-89 1 , Specification for Structural Steel Buildings—Allowable Stress Design and Plastic Design ASNT SNT-TC-1A 2 , Recommended Practice for Personnel Qualification and Certification in Non-Destructive Testing AWS D1 .1 3 , Structural Welding Code 3 Terms, Definitions, and Abbreviations For the purposes of this document, the following terms, definitions and abbreviated terms apply. 3.1 Terms and Definitions 3.1.1 certification The act of endorsing as meeting set standards or requirements.
3.1.2 critical area A highly stressed region of a primary load-carrying component as defined by the manufacturer or a qualified person. 3.1.3 derrick A semi-permanent structure of square or rectangular cross-section having members that are latticed or trussed on all four sides. 3.1.4 equipment performance Operational capability of a piece of equipment relative to expected or predetermined parameters or standards. 3.1.5 fish plate Either one or two steel plates that are welded or bolted to the webs or flanges of adjacent rails or beams on opposite sides to strengthen a member. 3.1.6 inspection Comparison of equipment conformity to predetermined standards, followed by a determination of action required, if any. 3.1.7 load test A procedure wherein a load is applied under controlled and monitored conditions to verify the serviceability of equipment. 3.1.8 maintenance Actions, including inspection; adjustments; cleaning; lubrication; testing; and expendable parts replacement necessary to maintain the serviceability of the equipment. 3.1.9 manufacturer A term denoting individuals or companies who make or process equipment or materials covered by this standard. 3.1.10 mast A structural latticed tower of rectangular cross-section with an open face comprised of one or more sections and then raised to the operating position. NOTE 1 If the unit contains two or more sections, it may be telescoped or unfolded during the erection procedure. NOTE 2 The mast may or may not be guyed. 3.1.11 owner An individual, legal entity or organization holding legal title to the equipment. 3.1.12 primary load The load which a structure is designed to resist during transportation, erection, survival or operation. NOTE This can be dead load, hook load, rotary load, setback or rod load, environmental load, or a combination of these.3.1.13 primary load carrying components Those components of the covered equipment through which the primary load is carried. 3.1.14 qualified person A person who, by possession of a recognized degree, certificate, or professional standing, or who by knowledge, training, or experience, has successfully demonstrated the ability to solve or resolve problems relating to the subject matter, the work, or the subject. 3.1.15 serviceability The condition of a piece of equipment at any point in time that affects the ability of the equipment to perform its function(s) as intended. 3.1.16 testing Actions that are carried out on a piece of equipment to determine if it can perform a required function. 3.1.17 turn-of-nut method Procedure whereby the specified pretension in high-strength bolts is achieved by rotating the fastener component a predetermined amount after the bolt has been snug tightened. 3.1.18 users Individuals or companies responsible for the use of equipment or material, or implementing recommended practices.

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