Delta Constructors’ Post

𝐏𝐑𝐎𝐂𝐄𝐃𝐔𝐑𝐄 𝐐𝐔𝐀𝐋𝐈𝐅𝐈𝐂𝐀𝐓𝐈𝐎𝐍 𝐑𝐄𝐂𝐎𝐑𝐃 (𝑷𝑸𝑹): The purpose of qualifying the procedure specification is to demonstrate that the joining process proposed for construction is capable of producing joints having the required mechanical properties for the intended application. Qualification of the procedure specification demonstrates the mechanical properties of the joint made using a joining process, and not the skill of the person using the joining process. The procedure qualification record (PQR) documents what occurred during the production of a procedure qualification test coupon and the results of testing that coupon. As a minimum, the PQR shall document the essential procedure qualification test variables applied during production of the test joint, and the results of the required tests. When toughness testing is required by the referencing code, standard, or specification for qualification of the procedure, the applicable supplementary essential variables shall be recorded for each process. The organization shall certify the PQR by a signature or other means as described in the organization’s quality program. The PQR shall be available for review. A procedure specification may be supported by one or more PQR(s), and one PQR may be used to support one or more procedure specification(s). Ref.: ASME IX - 2021

Basic but helpful.

Important Terms from ASME B31.3: https://lnkd.in/d-zvtfM2 https://lnkd.in/dwaSM6z8

How do I prepare a Procedure Qualification Record (PQR) ? A Procedure Qualification Record (PQR) is a critical document in welding that records the actual parameters and results of a weld test. Here's a step-by-step guide on how to prepare a PQR: 1. Understand the Codes and Standards: - Determine the relevant welding codes and standards that apply to your project, such as ASME Section IX, AWS D1.1, or ISO 15614. These standards will guide the requirements for the PQR. 2. Select the Welding Process: - Identify the welding process you will use (e.g., SMAW, GTAW, GMAW, FCAW). 3.Choose Base Materials: - Select the base materials to be welded. Document their specifications, including grade, thickness, and any other relevant properties. 4.Define Welding Variables: - List all welding variables, including: - Welding position (e.g., flat, horizontal, vertical, overhead) - Type of current and polarity (e.g., DC, AC, DCEN, DCEP) - Welding parameters (e.g., voltage, amperage, travel

F-Numbers and A-Numbers : A) What are F-Numbers and A-Numbers? F-Numbers & A-Numbers designate the specific combination of essential variables for a Welding Procedure Specification (WPS), such as welding process, base metal, filler metal, position, and preheat/interpass temperature. on the other hand, the nonessential variables, including factors like root opening, and groove angle. B) Benefits of Using F-Numbers and A-Numbers: 1. Minimizes redundant qualification testing by allowing multiple WPSs to be supported by a single Procedure Qualification Record (PQR). 2. Clearly defines the qualified variables, reducing ambiguity and potential errors. 3. Establishes a systematic method for grouping similar welding procedures. 4. Allows controlled changes within the qualified limits without complete re-qualification. 5. Facilitates clear communication and documentation of welding procedures. By adhering to the guidelines in ASME Section IX, manufacturers and welding professionals can ensure consistent, reliable, and code-compliant welding procedures, contributing to the safety and integrity of welded components across various industries. So the use of F-Numbers and A-Numbers is essential for anyone involved in qualifying and controlling welding procedures under ASME Section IX. Stay ahead of the game and ensure quality welds by understanding and implementing these vital designations. #WeldingEngineering #ASMECodeCompliance #QualityControl #WeldingProcedures

The minimum distance between welds depends on the applicable code and standard being used. Here are some guidelines from a few commonly used codes and standards: American Welding Society (AWS) D1.1: The minimum distance between welds should be at least four times the thickness of the thinner part joined, but not less than 1 inch (25 mm). American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code (BPVC) Section VIII, Division 1: The minimum distance between welds should be at least three times the thickness of the thinner part joined, but not less than 1 inch (25 mm). European Welding Federation (EWF) and International Institute of Welding (IIW): The minimum distance between welds should be at least three times the thickness of the thinner part joined, but not less than 2 mm. It is important to note that these guidelines are not exhaustive and other codes and standards may have different requirements. Additionally, the actual minimum distance between welds may depend on other factors such as the specific materials being used, the intended application, and the welding method employed. It is important to consult the applicable code or standard and/or a qualified welding engineer for specific guidance on minimum distance between welds for a given application.

Welding, weld inspection, and welder qualification are all key elements of pipeline operations and integrity. API standards help ensure integrity and resiliency of pipelines.

How about the development and application of API standard safety valve? - 2 3) Basic requirements: A. flow area (code), inlet and outlet diameter, pressure level (pound level), basic materials, pressure temperature range and inlet and outlet installation dimensions of safety valve shall be in accordance with API Std 526. B. the allowable deviation of the set pressure (P) of the safety valve is related to the set pressure. When p < 0.5MPa, the allowable deviation is ± 0.015MPa; when p > 0.5MPa, the allowable deviation is ± 3% p. C. The design and manufacture of safety valve shall be in accordance with ASME Boiler and pressure vessel code. Its basic conditions include mechanical action, material selection, inspection of manufacturing and assembly, product test, design, welding and other aspects of the manufacturer and assembly plant. Such as the requirements for the structural design and material selection of valve disc, valve seat, spring, guide sleeve and lifting device, the requirements for the manufacturing, test equipment and quality control procedures of the manufacturer and assembly plant, such as the requirements for the strength and air tightness test of pressure parts, the requirements for the test device, container and test method, etc. D. the discharge capacity verification test of pressure relief valve marked with ASME Boiler and pressure vessel code section shall be conducted under the pressure not exceeding 10% of opening pressure or 0.02MPa.

After a product is welded, how will we determine whether the welding quality meets the requirements? ❓ *#visualinspection : to check if the welding looks good and functional after assembly. It is mainly used for products with conventional welding requirements. *#leakagetest: to place the welded product in a test container to observe whether the air tightness is good. It is mainly used for boxes or tanks that store gas or liquid. *#magneticparticleinspection : to reveal surface and near-surface crack defects of materials through advanced instruments accurately. It is mainly used for various types of pressure-bearing equipment and pipeline welding products. After completing the welding process, we will verify the quality and weld integrity of each product through rigorous testing based on the customer's requirements or product usage functions. Look forward to discussing and sharing more tests to verify product quality with you. If you are interested in it, please leave a message in the comment section to let me know. 😀 #visualinspection #weldinginspection #leakagetest #magneticparticleinspection

https://lnkd.in/gMkFtBRa Pipe joining is a fundamental process in various industries from plumbing and HVAC to automotive and aerospace. It involves connecting two or more pieces of pipe or tubing to create a complete and functional system. Among the most common methods of pipe joining are soldering, brazing and welding. This article will delve into these three techniques providing a comprehensive understanding of their processes, applications and considerations. Our team of certified professionals brings a wealth of experience and expertise ensuring that every job big or small is executed to the highest standards.