ASME SECTION VIII – CALCULATION: ROUNDED HEAD – tmin (Part II)
In Part I (please read HERE), I have shared with you about calculation. I hope you can understand it even though the description is quiet brief. Still, I believe it is very beneficial for you especially those who are preparing to sit for the API Exam soon. For Part II, this time I will share […]
ASME SECTION VIII – CALCULATION (Part I)
Q: Tuan IR. Mursyidi, i have a problem. How to score good grade in calculations? Do you have a solution? Mind to share with us? A: Thanks for asking. I understand, some of us having this problem. Some of us are not. But, it doesn’t mean that you have no problem at all especially when […]
MINIMUM DESIGN METAL TEMPERATURE (MDMT)
IMPACT TEST In any item of structural or pressure Equipment there is a need to avoid the occurrence of brittle fracture. Impact strength is measured using a Charpy or Izod test. Assume ALL Carbon and Low Allow Steels require impact test, EXCEPT: a. UG-20 b. UCS-66 (MDMT and Thickness) c. UHA 51 MINIMUM DESIGN METAL […]
JOINTS EFFICIENCY (E) AND TYPES OF JOINTS
WHAT IS JOINT EFFICIENCY E? a. It is a safety factor for welds. b. It is a compensation for possible weld defects. WHAT FACTORS AFFECT E? It is type of joint, location of joint and amount of RT. HOW DOES JOINT EFFICIENCY AFFECT t min? As E decreases, required thickness increase. HOW IS JOINT EFFICIENCY […]
CHAP V – FABRICATION, ASSEMBLY & ERECTION
WELDING RESPONSIBILITY Each employer is responsible for the welding done by the personnel of his organization and shall conduct the tests required to quality welding procedures and to quality and as necessary re-qualify welders and welding operators. WELDING QUALIFICATIONS Welders and welding operators must be qualified to ASME Section IX, except as modified by B31.3. […]
DIFFERENCE BETWEEN PIPING AND PIPELINE
When we talk about pipes, what is the first thing that comes to your mind? Of course, the first thing is about the physical shape of the pipe, which is usually long in size and it is made from iron and other materials. But, when it comes to pipelines, what are the things that come […]
WPS, PQR AND WELDER’S QUALIFICATION
Before we explain further, first of all we want you to know that, these 3 terms will be used a lot. So for that, you need to familiarize yourself with these terms as an initial preparation to become a qualified welder. The 3 terms are: WPQ – Welder Performance Qualification WPS – Welding Procedure Specification […]
CUI, ECSCC & ITS CONTRIBUTING FACTORS
Is this the first time you’ve heard of corrosion under insulation (CUI) and stress corrosion cracking caused by external chloride (ECSSS)? If not, how much do you understand about them? What are the contributing factors for both? Let’s read this brief discussion of CUI and ECSCC. The generally recognized definition for corrosion under insulation for […]
4.3.3 CORROSION UNDER INSULATION (CUI)
WELDING IMPERFECTION (BS EN ISO 6520)
Apa itu welding imperfection? Dan apa perkara yang anda perlu ketahui tentangnya? Welding imperfection adalah flaw atau kecacatan yang boleh menjejaskan fungsi item tersebut. Ini boleh terjadi pada weld metal atau parent metal berdekatan. Welding imperfection dikelaskan mengikut ISO 6520 manakala had yang boleh diterima, ditentukan dalam ISO 5817 dan ISO 10042. Untuk itu, jom […]