Onur ÖZUTKU’s Post

Oil Storage Tank Welding Standards and Design Oil storage construction is governed by standards issued by the American Petroleum Institute (API) and the National Association of Corrosion Engineers (NACE). The relevant API standards API 650, API 620, and API 12D respectively govern welded oil tanks, larger welded tanks with higher internal pressures, and the fabrication and erection of field-welded tanks used mostly in upstream production. These three standards cover the welding of oil storage tanks exhaustively. The NACE MR0175 and MR0103 standards are only tangentially concerned with welding oil storage tankstheir primary concern is sulfide stress cracking in petroleum equipment in what is termed a sour environment. The terms sweet crude and sour crude refer to the hydrogen sulfide contents of crude oil from different sources. Sweet crude contains relatively little in the way of hydrogen sulfide and carbon dioxide, whereas sour crude contains high proportions of hydrogen sulfide and carbon dioxide which can heavily corrode steel. Because of this, NACE standards MR0175 and MR103 specify low carbon stainless steels, corrosion resistant alloys , and the cladding of steel pipes and valves with corrosion-resistant alloys. Welding these materials is considerably more difficult than welding carbon steels. The API standards are far broader, but tend to assume a sweet operational environment. The material they are most concerned with is high carbon steel that has been killed, in other words, thoroughly deoxygenated during forging. Since carbon steels are some of the most commonly welded types of metal, these standards are relatively straightforward and simple to meet. API 620 is the most demanding of these standards. It covers tanks operating with pressures up to 1,03 bar and at temperatures below 121 degrees C, with a focus on lap and butt welds.

Comparison of AWWA D100 and API 650: 🔍 Scope and Purpose: - AWWA D100 focuses on welded steel tanks for water storage, covering construction, materials, welding, testing, and inspection. - API 650 provides guidelines for welded steel storage tanks for oil and liquids, ensuring safety and reliability. 💡 Design Considerations: - AWWA D100 prioritizes water quality and safety, considering seismic, wind, and snow loads specific to water tanks. - API 650 emphasizes storing petroleum and chemicals, accounting for internal pressures, product temperature, and external factors like seismic activity. 🛠️ Materials: - AWWA D100 specifies corrosion-resistant materials suitable for water service. - API 650 covers a range of materials including carbon steel, stainless steel, and alloys for diverse stored products. 🔧 Welding and Fabrication: - AWWA D100 provides welding guidelines for water tanks, ensuring integrity through welder qualifications and inspections. - API 650 offers comprehensive welding standards for safe containment of hazardous materials. 🔬 Inspection and Testing: - AWWA D100 focuses on water quality and structural safety through hydrostatic testing and visual inspections. - API 650 emphasizes testing to prevent leaks and ensure safety, including NDT and detailed inspection criteria. 🌐 Applications and Industry Use: - AWWA D100 widely used for municipal and industrial water storage. - API 650 commonly used in oil, gas, and chemical industries for storing petroleum products and hazardous liquids. #AWWAD100 #API650 #StorageTanks #EngineeringStandards

Selecting Piping Materials for NACE Service Are you involved in oil and gas, petrochemical, or refining projects? Ensuring the right piping materials for NACE (National Association of Corrosion Engineers) service is crucial! What is NACE Service? NACE service refers to environments where fluids contain corrosive substances, such as: - Hydrogen sulfide (H2S) - Carbon dioxide (CO2) - Chlorides - Acids These substances can cause: - Corrosion - Erosion - Cracking - Failure of piping systems 6-Step Procedure for Selecting Piping Materials: 1. Define service conditions (temperature, pressure, fluid composition) 2. Determine corrosion severity using NACE charts 3. Select material category (carbon steel, stainless steel, duplex, nickel-based alloys, titanium) 4. Choose specific material from NACE-approved lists 5. Verify material compliance with NACE standards 6. Consider additional requirements (weldability, fabricability, erosion resistance) Key Considerations: - Corrosion resistance - Strength - Cost - Availability - Weldability - Fabricability Relevant NACE Standards: - MR0175: Materials for Use in H2S-Containing Environments - MR0103: Materials Resistant to Sulfide Stress Cracking #NACE #PipingMaterials #CorrosionResistance #OilAndGas #Petrochemical #Refining #Engineering #MaterialsScience

Hydrocarbon and utilities pipes wall thickness after 10 inch can be schduel 20 not 40 and after verifying the wall thickness by ASME codes and thats according to SAES(saudi aramco engineering standard) index L-310 clause 10.5 table 2 shown below .by this way we will reduce welding time and number of pipe supports besides cheaper pipe cost .

STANDARDS IN VARIOUS INDUSTRIES American Standards Overview 1. American National Standards Institute (ANSI) ANSI issues material Standard through. ASTM (American Society For Testing and Matrials) and dimensjonal Standards directly. 2. Standards Adaptation by ASME • Many standards are adapted by the American Society of Mecanical Engineers ASME covering Various domains, including the Following America Standards For Piping Engineers. 2.1 . American Petroleum Institute API Standards. •Notabl Standards like APISL, API6D, and APl593 are commonly referred to by piping Engineers For applications such as Valves and Fir Tests. 2.2. American Iron and Steel Institute ALSI/Standards. • AISI standards Specifi materials based on chemical and physical Properties. Commonly used Specifications include AISI 410, AISI 304 and AISI 316 2.3. American National Standards Institute ANSI ANSI Standards, Now part of the ASME code For Pressurs Piping, are integral in designing Piping Systems

Hydrocarbon and utilities pipes wall thickness after 10 inch can be schduel 20 not 40 and after verifying the wall thickness by ASME codes and thats according to SAES(saudi aramco engineering standard) index L-310 clause 10.5 table 2 shown below .by this way we will reduce welding time and number of pipe supports besides cheaper pipe cost .

Valve and Flow Control Specialists distribute ASME 1 and ASME VIII Safety Relief Valves. No matter where you are on this planet we can assist you with these valves. If your company has fired pressure vessels / boilers on site it maybe prudent to check your Safety Valves on the boiler and associated equipment. Fired vessels such as Boilers have strict codes of equipment and operational compliance. With non compliance to local Codes now a criminal offence in many countries litigation there-after if any industrial issues occur it is very important to know the application, fit the correct valves and ensure checks and balances are covered. The onus of compliance sits squarely with the owner of the asset not the supplier or the maintainer although there maybe some consequence of association. Larger boilers will have flanged steel Safety valves. They can be in refineries, hospitals, food processing plants, sugar mills etc. These are more relevant to the ASME Sec 1 compliance requirements, many of which could have valves 20 to 50 years old still operating and being serviced. Our advise is check the last servicing, does the valve have the ASME Sec 1 “V” mark on the body? Is there a stamp affixed to the manufacturers identity plate? If the valve does not have these markings and stamp you may wish to investigate. An ASME VIII (usually marked with a "UV") valve on a boiler does NOT comply to ASME 1 requirements. We think many will be surprised when they do check. A proactive boiler service company will ensure their clients asset is complying. Bronze valves can also come under the scope of ASME Sec 1 and is the most stringent code when used on boilers however sometimes there can be less demanding requirements in some countries with their own local codes. To find out more: https://lnkd.in/gj3P82r8 #engineeringdesign #engineeringindustry #fpso #oilandgas #oilandgasindustry #refinery #mechanicalengineering #pressuremeasurement #processcontrol #powergeneration #waterindustry #miningindustry #procurement #lngindustry #pipelineconstruction #pipelineintegrity #pulpandpaperindustry #gasdistribution #petrochemicalindustry #steaminjection #blowdown #boilerservice #steambolier

!!! Very important for piping inspectors; Low Silicon Carbon Steel Sulfidic Corrosion A fire occurred in a Crude Unit. A section of 8" diameter carbon steel piping from the atmospheric distillation tower failed, releasing hot gas oil which ignited. Why it happened . Sulfidic corrosion of carbon steel is believed to be the cause. It can occur in hydrocarbon streams containing sulphur compaunds at temperatures above approximately 230 C, as described in API RP 939-C . Low silicon content of carbon steel piping section that was less than 1,5 meters long is believed to have caused accelerated corrosion, compared to the surrounding piping components. . The gasoil piping system had been regularly inspected at multiple locations; however there were no monitoring points on the failed sections of piping. Recommendation: Inspect all components in similar carbon steel systems exposed to sulfidic corrosion conditions See Fig

ER70S-6 Popular Filler was relative with 3 Standard and state A-No.1 1. AWS A5.18 2023 2. ASME BPVC Section IX 2023 3. NACE SP0472 2020 Reason from NACE SP0472 2020 Methods and Controls to Prevent In-Service Environmental Cracking of Carbon Steel Weldments in Corrosive Petroleum Refining Environments. Because it is impossible to perform production hardness testing on the root pass, the hardness test is usually waived even if a different filler metal is used for the root pass. However, to ensure that the root pass weld deposit is not hard, the same restriction to use only A-No. 1 chemical composition is specified following ASME Boiler and Pressure Vessel Code, Section IX. For more details, please see NACE SP0472.