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
Butt weld fittings is one of the most popular connection type in pipeline systems. It always been required in large quantities in different industries, and especially for the large diameter pipelines. What is Butt Weld FittingsButt weld is to connect pipes or fittings ends by welding. It’s a weldable steel pipe fitting that would allow to branch off, allow for change of direction of flow, attach auxiliary equipment, or reduce the size of the pipe. We aware the beveling is very important processes in the whole production procession of butt-welding pipe fittings, we always make beveling according to the standard … Continue reading Weld beveling for flange and fitting
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?
Linear Thermal Expansion of Pipping; One factor that must be considered in the design of the piping system is Piping Flexibility. Because our pipes will stretch itself when the temperature is increased, and shrink when the temperature is dropped. Therefore, our piping system must be flexible or able to move back and forth sufficiently to support elongation or shrinkage of pipe. In ASME B31.3 Process Piping Design determines the Linear Thermal Expansion of each material. To be used to calculate how much piping will stretch or shrink according to how much temperature has changed. The values in Table C-2 measure … Continue reading Thermal Expansion affections in Piping system
Vibration Induced Fatigue; Vibration Induced Fatigue is a form of fracture due to fatigue, mechanical (of mechanical Fatigue) due to Dynamic load caused by vibration ( with Vibration) had done so at the risk of Vibration Induced Fatigue is a point there. High stress and severe shaking points. This type of damage is usually found at the small branch connections of Pressure Vessel and Piping, which are naturally high-stress points because they are discontinuous (see Stress Analysis) and are the receiving points. Vibrating force Thus, if the Support inadequate and the Small Branch Connection with Vibration ( for example, near … Continue reading What is Vibration induce cracking
There are several portable hardness testers available, with some more appropriate to certain situations than others. The particular hardness tester for the job would depend on what you needed to find out and why. For example, a Barcol hardness tester for use on Al alloys is generally used as a comparative tool; to indicate a loss in strength in damaged regions of a structure compared with undamaged regions or virgin material. Barcol hardness testers are very portable and are good for this type of comparative work, but the conversion to more widely recognized hardness scales is only approximate. Telebrineller testers. … Continue reading Portable hardness test tools
A specification for steel forgings such as ASTM A694 covers a wide range of strength grades from F42, with a minimum specified yield strength of 290 MPa, to F70, with a minimum specified yield strength of 485 MPa. The compositional limits are given in ASTM A694 (product analysis) are ≤0.3% carbon 0.13-0.37% silicon and ≤1.50% manganese. Additionally, the steel may contain micro-alloying elements, i.e. it may be a micro-alloyed (or high strength low alloy) steel; alternatively, Cr-Ni-Mo-V low alloy steel, ASTM A707 Grade L5, may be used. Particularly for small valves and thin section sizes, it may be expected that … Continue reading Make temporary flange for Hydro-test or Blind as ASTM A 694.
LEAK TEST Prior to initial operation, and after completion of the applicable examinations required by para. 341, each piping system shall be tested to ensure tightness. General Requirements for Leak Tests Requirements in para. 345.2 applies to more than one type of leak test. Preparation for Leak Test: 345.3 will be followed as below guide chart: How many Types of LEAK TEST? + Para 345.4 Hydrostatic Leak Test + Para 345.5 Pneumatic Leak Test + Para 345.6 Hydrostatic-Pneumatic Leak Test + Para 345.7 Initial Service Leak Test + Para 345.8 Sensitive Leak Test + Para 345.9 Alternative Leak Test Record: + Para 346 RECORDS Document refer ASME B31.3 – 2019 Continue reading What is Piping Leak test
The most important factor in ensuring a pump system offers a long service life is to get the installation right. No amount of good engineering, proper pump selection, or correct application of pumping technology can overcome the challenges a poor installation can throw at a pump system. So it’s critical that we all know the bare minimum requirements to ensure a good installation. Step 1: Read the Manufacturer’s Installation Instructions Virtually all pump manufacturer’s offer Operation and Maintenance Manuals (O&M’s). In addition to information on proper pump operation and maintenance these manuals usually also provide information on how to install … Continue reading Pump installation guides