Category: PIPING

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𝐁𝐨𝐥𝐭 𝐆𝐫𝐚𝐝𝐞𝐬 (8.8) 𝐯𝐬. (10.9)

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𝐁𝐨𝐥𝐭 𝐆𝐫𝐚𝐝𝐞𝐬 (8.8) 𝐯𝐬. (10.9) 1️⃣ 𝗕𝗼𝗹𝘁 𝗚𝗿𝗮𝗱𝗲 (8.8)Grade 8.8 bolts are made of medium carbon alloy steel.They have a minimum tensile strength of 800 MPa and a minimum yield strength of 640 MPa.These bolts are known for their moderate strength and durability.They are commonly used in machinery, automotive parts, and general engineering applications. 2️⃣ 𝗕𝗼𝗹𝘁 𝗚𝗿𝗮𝗱𝗲 (10.9)Grade 10.9 bolts are made of alloy steel and have a higher strength than Grade 8.8 bolts.They have a minimum tensile strength of 1000 MPa and a minimum yield strength of 900 MPa.These bolts are specifically designed for applications that require high strength … Continue reading 𝐁𝐨𝐥𝐭 𝐆𝐫𝐚𝐝𝐞𝐬 (8.8) 𝐯𝐬. (10.9)

API 570 - PI, API Inspector, OIL & GAS, PIPING3 Comments

API 570 Quiz (ASME 31.3 – Quality Factor of Weld-joint and Casting)

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In this very first and priority topic, we will try one by one of the Open/Close questions on Module ASME 31.3 – Quality Factor as a part of in-the-exam API 570 Body of knowledge (BOK) If you don’t know how API 570 Certification scheme, … Continue reading API 570 Quiz (ASME 31.3 – Quality Factor of Weld-joint and Casting)

API 510, API 570 - PI, Mechanical, OIL & GAS, PIPINGLeave a comment

Guide for selecting Gasket type

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The Factors to consider when selecting a gasket Operating temperature and pressure, pipe size, temperature cycle, cost, chemical composition of fluid, fire resistance, radiation, etc In general of application, please use Pressure – Temperature chart as below for understanding the capability of each type of gasket. Sheet Gasket (Rubber gasket, Non-asbestos gasket, PTFE gasket, flexible graphite gasket) Rubber gasket is common with black color, but it is different. Compressed Synthetic Fiber Gasket (e.g. non asbestos or asbestos free) PTFE (Poly Tetra Flour Ethylene) Gasket Type: Virgin(Pure), Filled (Compressed Synthetic), Micro-cellular (Closed or Expanded), with thin metal reinforcement. Flexible Graphite Gasket … Continue reading Guide for selecting Gasket type

API 570 - PI, API Inspector, OIL & GAS, PIPING, Radiographic, WELDINGLeave a comment

Why is the Gap needed on Socket Welds

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The socket weld is a pipe attachment detail in which a pipe is inserted into a recessed area of a valve, fitting, or flange. The joint construction is a good choice wherever the benefits of high leakage integrity and great structural strength are important design considerations. Advantages of Socket Weld Pipe Fittings The socket weld pipe fittings can be used in place of threaded fittings, so the risk of leakage is much smaller. Socket weld pipe need not be beveled for weld preparation. The weld metal can not penetrate into the bore of the pipe. Construction costs are lower than with butt-welded joints due … Continue reading Why is the Gap needed on Socket Welds

API 510, API 570 - PI, API 650 653, API Inspector, Mechanical, OIL & GAS, PIPINGLeave a comment

What is Static equipment in Oil & Gas?

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The majority of mechanical equipment found in oil and gas facilities belongs to the static equipment group, which comprises pressure vessels (drums, columns, reactors, filters) and heat exchangers (shell and tubes, plate and frame, air coolers). This article will contain cost-effective recommendations for design, materials, and fabrication. They aim to enable the inspector/surveyors/engineer/purchaser who is not an equipment specialist, to check that economical choices are made. The specification and selection of the equipment is the responsibility of the static equipment engineer, based on requirements specified by other disciplines, including process, materials and plant layout. Let’s start with the review of … Continue reading What is Static equipment in Oil & Gas?

API 510, API 570 - PI, API Inspector, CORROSION, OIL & GAS, PIPINGLeave a comment

What is water standards for hydrostatic testing?

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Selection and Treatment of Water and Conduct of the Test, to Maintain the integrity of the System is a priority concern in new-building or construction project. Specially on Stainless-steel which is very sensitive to corrosion. 1.0 Introduction Welded fabrications are frequently tested hydrotested for pressure tightness. Unless properly conducted, this procedure can induce problems. It is important to avoid initiating corrosion of the fabrication by subjecting it to critical conditions outside the initial design constraints. Where the vessel is to handle materials which are later ingested, contamination must be avoided. Damage may be caused by the induction of latent corrosion … Continue reading What is water standards for hydrostatic testing?

API 570 - PI, API Inspector, OIL & GAS, PIPING, SHIP SYSTEMS1 Comment

Hydrostatic test with Flange Joints (considering of Flange MAWP)

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As a common hydrostatic test procedure, the test pressure will be taken from the piping system MAWP.  Depending on the primary code applied, the test pressure can be 1.5 MAWP, or 1.3 MAWP + factors, or 1.15 MAWP… etc., Refer to What is MAWP, What is Max operation pressure, Hydrostatic test: What is the MAWP of the pressure vessel (ASME VIII) FITTING PRESSURE RATING PIPE PRESSURE RATING PIPING HYDRO-STATIC TEST COMPREHENSION Test Pressure vs MAWP (ASME VIII) Design Pressure Vs MAWP (API, ASME) MAWP is normally referred to as system maximum allowance working pressure. The fitting is small and is … Continue reading Hydrostatic test with Flange Joints (considering of Flange MAWP)