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This NACE/SSPC joint standard defines the Light Cleaning (WJ-4) degree of surface cleanliness of coated or uncoated metallic substrates achieved by the use of waterjet cleaning prior to the application of a protective coating or lining. Waterjet cleaning is the use of pressurized surface preparation water for removing coatings and other materials, including hazardous materials, from a substrate to achieve a defined degree of surface cleanliness. Waterjet cleaning includes various methods such as low-pressure water cleaning (LP WC), high-pressure water cleaning (HP WC), high-pressure waterjetting (HP WJ), and ultrahigh-pressure waterjetting (UHP WJ).
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The objective of this standard practice is the development of a new external corrosion direct assessment (ECDA) data interchange data structure that will enable electronic integration of data and standardize reporting of ECDA data asso- ciated with indirect inspection data within the pipeline industry, to allow transfer between different software packages or computer systems. This is expected to minimize difficulty in using various programs to analyze or graph data and allow for comparison of data gathered for a given pipeline segment at different times, regardless of the software system used to collect it.
Four-point bend testing is used extensively in the oil and gas industry to evaluate resistance of metals to sulfide stress cracking and stress corrosion cracking. The face of the specimen to be tested is stressed in tension and the reverse face in compression. The test is carried out for a specified exposure period with the specimen held under constant displacement using compact loading jigs. The compact nature of the jigs enables testing of several specimens in the test vessel simultaneously. Despite the apparent simplicity of the test, there are many factors that can influence the test results. The purpose of this standard is to establish a reliable methodology for conducting the tests to enhance repeatability and reproducibility of test data. The results of the tests can then be used with greater confidence to rank the performance of metals, the relative aggressiveness of environments, and to provide a basis for qualifying metals for service application. As such, the standard will be of particular benefit to materials and corrosion engineers in the oil and gas sector and to test laboratories providing critical data.
This nondestructive test method describes a procedure to detect discontinuities (“holidays”) in thin-film polymeric coatings of less than 330 µm (13 mils) dry film thickness (DFT) applied to the internal surfaces of metallic tubular goods used in the oil and gas industry. The apparatus and the recommended procedure for performing the test are described, as are methods of reporting the test data.
A separate test method, NACE TM0186, addresses holiday detection of internal tubular good coatings of 330 to 760 µm (13 to 30 mils) dry-film thickness.
This AMPP standard practice presents guidelines for galvanic cathodic protection (GCP) of reinforcing steel in atmospherically exposed concrete elements or structures. These guidelines are intended for owners, engineers, architects, contractors, and those concerned with the mitigation of reinforced concrete corrosion through the application of GCP systems. The information in this standard as it relates to GCP systems is intended for atmospherically exposed concrete structures and is not applicable to concrete with nonferrous reinforcement or epoxy-coated, galvanized, or other types of coated reinforcement. GCP applications for buried and submerged reinforced concrete structures are not addressed in this standard.
ANSI/NACE MR0175/ISO 15156 standard in context of the corrosion science and forms of cracking that led to its development. Usage. User Support. Documents. Laboratory tests to confirm cracking resistance of materials in O & G environments. 2016 NACE
Asset owners, engineers, consultants, coating contractors, inspectors, and others are specifying allowable levels of surface soluble salts to prevent premature coating failures. The purpose of this standard is to provide guidance about the number of and locations for soluble salt tests on steel surfaces.
This standard establishes siting and frequency requirements for soluble salt testing before the application of a subsequent coating system to previously coated substrates and replacement substrate material. It does not include allowable limits of soluble salts, which are typically addressed by the procurement documents or the coating manufacturer’s documentation.
This technical report describes the associated corrosion mechanisms in refinery crude distillation unit (CDU) distillation tower overhead systems and current industry practices for mitigating or controlling this corrosion. Distillation towers in a typical CDU include a pre-flash tower, an atmospheric tower, and a vacuum tower. Feedstock, unit configurations, and associated process variables are addressed, from the crude oil storage tanks to the distillation tower overhead drums.
This standard practice provides the material characteristics, minimum system performance requirements, application methods, handling, shipping, and installation procedures for tape coatings for the prevention of external corrosion of underground or submerged pipelines. This standard is applicable to both carbon steel (CS) pipe and ductile iron (DI) pipe when the application of a tape coating system is desirable. This standard is intended for use by coating applicators, engineers, and pipeline owners as a guide to specifying application parameters.
The tape coatings covered in this standard are used as the external corrosion protection for new and existing pipes, girth welds, and fittings, and for repair and rehabilitation. The primary function of these tape coating systems is to pre- vent corrosion of the pipeline when used with or without cathodic protection (CP).
This guide provides the specifier and user with information regarding the use of pre-construction primers (PCPs) on structural steel in shipbuilding. It provides background on the reasons to use and retain PCPs, the types of PCPs and their application and inspection, and the secondary surface preparation processes that are used when PCPs are retained in the final, compatible primary coating system. While this document contains details specific to the shipbuilding industry, the technical concepts related to the application and retention of PCP may apply to other industrial applications.
This standard practice provides technical and quality assurance guidelines for handling and installing nickel alloy, stainless steel, and titanium linings in air pollution control equipment (e.g., FGD systems, ducts, and stacks). The concepts and guidance included in this standard may also be useful in other process industries, but may require modification to meet the requirements of a particular process. This standard is intended to be a basis for preparation of a specification to be agreed on by contracting parties for the installation of wallpaper lining in air pollution control and other process equipment. It is the responsibility of users of this standard to determine the suitability of specific procedures, metals, and alloys for particular applications.
Note: This document was originally published with an error in Section H4.4, Equation (H2), page 33, Section H4.3.3 has a note added, page 33, and Figure H2, Figure H3, Figure H4, and Figure H5, pages 35-38 were enlarged to improve accuracy. These identified errors are corrected. The Errata sheet is included.
This standard practice presents guidelines for establishing requirements to ensure proper application and performance of plant-applied single-layer fusion-bonded epoxy (FBE) coatings to the external surfaces of carbon steel pipe.