Nace mr0103 на русском
The other requirements specified in Table 5 shall also be met. Описание условий эксплуатации, в которых накоплен опыт, должно отвечать требованиям 6. Vickers hardness criteria have been specified for a few selected welding procedure qualifications in this standard, based on proven field experience. The welding procedure shall be qualified by performing a hardness survey in accordance with Appendix C on a specimen taken from the WPQT coupon s to demonstrate the ability of the procedure to produce weldments that meet the specified hardness 248 HV 10 maximum. Because Brinell hardness tests are only indicated for steel materials in this standard, all Brinell hardness tests shall be performed using 29. The hardness in the bend area shall not exceed 225 HBW. Other forms of wet H2S cracking, environmental cracking, corrosion, and other modes of failure, although outside the scope nace mr0103 на русском this standard, should be considered in the design and operation of equipment. Cold-rotary straightened pipe is allowed only when permitted in API specifications. Помогите найти NACE MR0103-2012, лучше на русском. These coatings enhance the generation of hydrogen on the surface and can contribute to hydrogen cracking. The hardness shall not exceed 60 HRC.
The process used to develop MR0103 is described, followed by a review of the requirements in the st andard accompanied by highlights of the differences between MR0103 and the previous and current versions of MR0175. NACE International assumes no responsibility for the interpretation or use of this standard by other parties and accepts responsibility for only those official NACE International interpretations issued by NACE International in accordance with its governing procedures and policies, which preclude the issuance of interpretations by individual volunteers. The user shall be responsible for specifying whether bolting is exposed or unexposed in accordance with Paragraphs 5. In cases in which the specific welding requirements conflict with the requirements of this section, the specific material welding requirements shall override these general requirements. The one exception that does not require end user approval is the use of comparison hardness testing in accordance with ASTM Nace mr0103 на русском 11 to evaluate weld deposits as specified in NACE SP0472.
The Brinell test method is often used to measure the hardness of castings and forgings. Variations containing alloying elements such as lead, selenium, or sulfur to improve machinability shall not be used. The tensile bar, C-ring, bent beam, and double-cantilever beam test specimens described in NACE Standard TM0177 are accepted test specimens. This distinction is important because metals can become charged during high-temperature exposure and subsequently crack during excursions to lower temperatures such as during shutdowns. This plot was constructed based on the equilibrium constants for H2S in Section 8-41 of CRC Handbook of Chemistry and Physics, 72 nd Edition. Comparison hardness testers are commonly used to check field weldments.
Nace mr0103 на русском
Other types of material damage include hydrogen blistering, hydrogen-induced cracking HICand stress-oriented hydrogen-induced cracking SOHICwhich are not addressed by this standard. The use of such coatings for any other purpose such as wear resistance or corrosion resistance is outside the scope of this standard. The hardness in the bend area shall not exceed 225 HBW. The hardness shall not exceed 23 HRC. При производстве нескольких партий изделий, изготовляемых по одной спецификации, оценивают свойства материала, влияющие на его поведение в средах, содержащих сероводород см.
Clipping is a handy way to collect and organize the most important slides from a presentation. The material shall have met one of the conditions listed in Paragraph 2. These materials may then be proposed for inclusion into the standard using methods in Paragraph 1.