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API 20N 2019 pdf free download

API 20N 2019 pdf free download.Heat Treatment Services—Continuous Line for Equipment Used in the Petroleum and Natural Gas Industry.
3.1.5 heat treat lot The quantity of material from the same grade, size, processed uninterrupted in the same manner in the same furnace, using the same process parameters. Additional product specifcations may restrict the use of multiple heats. 3.1.6 load sensor Sensors that are attached to or in contact with production material or are buried in load of production material. 3.1.7 marking Identifcation placed on the heat-treated material in accordance with this standard. 3.1.8 on-site activity Activity performed at the heat treatment supplier’s facility. 3.1.9 preheat zone(s) The section of the furnace that precedes the work zone(s). 3.1.10 receiving? verifcation Inspection and review of incoming material and attendant documentation. 3.1.11 semi-continuous heat treatment operation Heating device through which material is moved intentionally with a predetermined start-stop-start pattern during the processing cycle. 3.1.12 system accuracy test SAT An on-site comparison of the instrument/leadwire/sensor readings or values, with the readings or values of a calibrated test instrument/leadwire/sensor to determine if the measured temperature deviations are within applicable requirements. These are performed to ensure the accuracy of the furnace control and recorder system in each control zone. 3.1.13 temperature uniformity survey TUS A test, or series of tests where calibrated feld test instrumentation and sensors or heat sensitive material are used to measure temperature variation within the qualifed furnace work zone, prior to and after thermal stabilization. 3.1.14 work zone The volume based on the boundaries established by the heat treater for each furnace. This may exclude preheat and entry/exit sections. As applicable to temperature uniformity survey methods: (Volumetric, Plane, Probe methods). 3.1.15 zone An independently controlled section of the furnace.
3.2 Acronyms and Abbreviations MPS Manufacturing Process Specifcation SAT System Accuracy Test TUS Temperature Uniformity Survey 4? Heat? Treatment? Supplier? Qualifcation 4.1? Establishment? of? the? Process? Being? Qualifed The following continuous line heat treatment processes are covered in this document. The heat treatment supplier will qualify for one or more of the processes described in 4.1.1 through 4.1.4. 4.1.1 Continuous Process “Class A” This process involves no interruption in austenitize-quench-temper, or solution anneal and quench. a) Induction, gas fred, or electric heating in austenitizing and temper may be used. b) Quench by surface spray, bath immersion, surface spray/ID quench. 4.1.2 Semi-Continuous Hybrid “Class B” This process involves continuous austenitizing and quench followed by interrupted batch type temper. a) Induction, gas fred, or electric heating in austenitizing and tempering may be used. b) Quench by surface spray, bath immersion, surface spray/ID quench. c) Batch type temper (API 20H requirements shall apply for the batch type temper process). 4.1.3 Continuous Process “Class C” This process involves baskets or loose grouped components conveyed together through austenitizing–quenching- temper, or solution annealing-quench. a) Open or closed end thermal heating by gas, electric, or propane fred. b) Quench by surface spray, bath immersion, surface spray/ID quench. 4.1.4 Continuous Process “Class D” This process does not involve a quench. Normalizing, annealing or stress relieving, by induction, electric, or gas fred. 4.2 Quality Management System (QMS) The heat treatment supplier shall establish, document, implement, and maintain at all times a QMS conforming to API Specifcation Q1 or ISO 9001. In addition, the heat treatment supplier shall be responsible for conforming to all of the applicable requirements of this specifcation.
5 Responsibilities and Duties 5.1 General It is the responsibility of the heat treatment supplier to ensure that it: a) performs all heat treatment in accordance with specifed standards and applicable quality control criteria; b) performs only heat treatment of which it is adequately equipped and staffed; c) performs only heat treatment of which its employees are adequately qualifed; d) ensures equipment is calibrated and personnel performing calibration are qualifed in accordance with the requirements of the supplier’s written procedure; e) ensures facility and equipment is properly maintained; f) informs the purchaser of any discrepancy or limitation imposed on the requested heat treatment by such factors as size, traceability, form, shape, material or procedure; g) calls to the attention of the purchaser any irregularity or defciency noted in the procurement documents; h) promptly submits formal reports of all heat treatment to the purchaser; i) informs the purchaser of noncompliance of the specifed standards or procurement document requirements. 5.2 Personnel Training Requirements Personnel performing heat treatment (operators/supervisors) shall be trained and qualifed in accordance with requirements of the heat treatment supplier’s written procedure. Records of training and qualifcation shall be maintained.

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