Ebara Elliott Energy’s Post

#Over_pressure_protection_for_Pumps_all_types_and_centrifugal_compressors 1.For pumps and centrifugal compressors, the pressure rating of the suction side up to and including the suction isolation point (e.g., isolation valve, ESD, or ROV) and the discharge side SHALL [PS] be the #same or provided with overpressure protection. A nominally sized Pressure Relief Valve (PRV), (e.g., a D orifice PRV) can be used for overpressure protection. Rationale: To prevent overpressure of the suction piping and nozzle when the suction is isolated (due to leakage through valves). Requirement for purchased rotating equipment is for the suction nozzle to be rated the same as the discharge nozzle. 2.For existing pumps and centrifugal compressors, if the pump discharge valve flange class is greater than the flange class shown in #Table below overpressure protection during isolation shall be by one of the following: a) a nominally sized Pressure Relief Valve (PRV), (e.g., a D orifice PRV) installed downstream of the suction block valve; b) overpressure protection measures identified by a risk assessment. For low risk and/or low isolation frequencies administrative controls might be sufficient. See Section 4.4.16 of API STD 521.

𝐖𝐡𝐚𝐭 𝐢𝐬 𝐎𝐧𝐥𝐢𝐧𝐞 𝐋𝐞𝐚𝐤 𝐒𝐞𝐚𝐥𝐢𝐧𝐠 𝐒𝐞𝐫𝐯𝐢𝐜𝐞? When leakage is discovered in pipeline, valve, flange or any joint, there are some options available for customer. The first one is to do nothing and live with this leakage until Unit/Plant Shutdown and then repair it. It’s only possible if the type of leaking medium is within acceptable limits from process, safety and environmental points of view. If the leakage is non-acceptable and should be eliminated – the task starts to be more complicated. Simplest example is when damaged process line has a reserve/parallel pipeline. In this case line will be isolated and repaired with traditional methods such as replacing gasket, valve, joint, bend or piece of pipe and etc. Production of the Plant will not be altered. When ruptured part of line has no reserve – you can stop the Plant and this way sacrifice the production on a very large scale. OR, you can install specifically design Clamp on live pipeline, inject sealing compound to it and eliminate the leakage 𝐰𝐢𝐭𝐡𝐨𝐮𝐭 𝐬𝐭𝐨𝐩𝐩𝐢𝐧𝐠 𝐭𝐡𝐞 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧! See example on the video!

NFPA 25, 2023 #WBITM 13.3.2.1.1  Valves secured with locks or supervised in accordance with applicable NFPA standards shall be permitted to be inspected monthly. 13.3.2.2 *  The valve inspection shall verify that the valves are in the following condition: (1)In the normal open or closed position (2)*Sealed, locked, or supervised (3)Accessible (4)Post indicator valves (PIVs) are provided with correct wrenches (5)Free from external leaks (6)Provided with applicable identification 13.3.3.1  Each control valve shall be operated annually through its full range and returned to its normal position. 13.3.3.3  Post indicator and outside screw and yoke valves shall be backed a one-quarter turn from the fully open position to prevent jamming. 13.3.3.4  A valve status test shall be conducted any time the control valve is closed and reopened at system riser. 13.3.4 Maintenance. 13.3.4.1  The operating stems of outside screw and yoke valves shall be lubricated annually.

🔧 Ensuring Reliability in #StaticEquipmentMaintenance At #YnancHyzmat, we pride ourselves on delivering top-tier competency in maintaining critical static equipment, including pressure vessels, containers, collectors-separators, reservoirs, condensers, chillers, and heat exchangers. Our comprehensive service offerings include: ⚙️ Installation and Dismantling: Expertise in setting up and safely removing equipment, ensuring smooth transitions and minimal disruption to your operations. 🧼 High-Pressure Vessel Cleaning: Utilizing advanced techniques to maintain the cleanliness and efficiency of high-pressure vessels. 🔄 Heat Exchanger Repair and Overhaul: From cleaning clogged pipes to replacing worn or leaking pipes, we ensure your heat exchangers operate at peak performance. 🔍 Density and Strength Testing: We conduct rigorous tests on various static assets to ensure they meet required safety and operational standards. 🔩 Valve and Safety Device Repair: Precision repairs on shut-off valves, control valves, and safety devices to keep your systems safe and reliable. #YnancHyzmat  #ReliableServices #StaticEquipment #IndustrialMaintenance #HeatExchangerRepair #SafetyFirst #OperationalExcellence

Relief Valves in Parallel: Never provide parallel valves open to the process when both are fully rated for the maximum load! As James R. Lawrence Sr discussed in his paper (2010), over the past years, there has been a rise in the incorrect use of parallel relief valves (pressure safety valves). This misuse involves leaving two or more relief valves of the same full capacity open to the process. This practice seems to have started when operators, with good intentions but a mistaken belief, decided to open a standby valve, thinking that if one valve is safe, then two must be safer. Potential Issues: -The facility line-up at the time of an accident or event does not match the authority approved P&ID. -Relief valve pairs may chatter on and off thus decreasing capacity possibly below the amount required to maintain MAWP. -Relief valve damage. -Damage to piping and/or pipe supports. Note that the phenomenon of stress is cumulative. -Flare or relief system overload with resultant overpressure. -Relief into the process area due to damaged headers or venting at unexpected locations. Reference: https://lnkd.in/dzJkYVwR Relief Valves in Parallel, James R. Lawrence Sr, Mary Kay O'Connor Process Safety Center, International Symposium, October 2010. #hazop #processsafety #chemicalengineering #safety #processdesign #psv

PSV Sizing Calculations PPT Pressure relief Valves: Types PDF https://lnkd.in/dHSJe5cm What is a Pressure Relief Valve and How Does it Work? A pressure relief valve is a vital safety device used to protect equipment and personnel from overpressure situations. It is designed to automatically relieve excessive pressure within a system by opening and releasing the excess pressure. In this article, we will discuss the different […] #PRV #PipeSizing" Details about pressure relief valve blow off pipe sizing could include: Fundamentals of pressure relief valves (PRV) #mechanicalmaintenance #mechanicalengineer #maintenanceengineer #growmechanical #growmechanical.com Importance of blow off pipe sizing Factors influencing sizing calculations Practical methodologies for accurate sizing Case studies and examples for better comprehension

PSV Sizing calculations

Equipment (Cock Valves and Check Valves) ============================ 2. Functions of Cock Valves 3. The Different Types of Cocks 4. Valve Selection and Operation 5. Valve Operating Systems 6. Valve Control #Free_Palestine

☆☆ 𝐂𝐎𝐌𝐌𝐈𝐒𝐒𝐈𝐎𝐍𝐈𝐍𝐆 ☆☆ 𝐌𝐄𝐂𝐇𝐀𝐍𝐈𝐂𝐀𝐋 𝐑𝐔𝐍 𝐓𝐄𝐒𝐓 [ 𝐌𝐑𝐓 ] ● It is the Actual Rotating Test of machines by using utilities as Steam, Air, N2, Water in order to make sure that the mechanical operating conditions such as Vibrations, Bearing Temperature, any Abnormal Sound are in acceptable limits as defined by Standard 𝐄𝐧𝐬𝐮𝐫𝐞 𝐢𝐧 𝐏𝐈𝐃-- 1.MRT medium and its Supply point 2. Circulation Loop including Valve positions ad Open or Close 3. Required Temporary Pipings, Strainers, Filters etc. 4. Equipment parameters to be maintained during Test as Pressure, Flow, Level, Composition, Temperature 5. Required Auxiliary 6. Safety valves and protections 7.Blinds 8. Avoid Vaccum conditions 𝐏𝐫𝐢𝐨𝐫 𝐑𝐞𝐪𝐮𝐢𝐫𝐞𝐦𝐞𝐧𝐭𝐬 𝐟𝐨𝐫 𝐌𝐑𝐓-- ● Driver Solo Run is done excent Steam Turbine ● Line cleaning ● Equipment Boxup ● Alignment and Coupling and its Guard ● Lubrication ● Shaft Turning by Hand ● Installation of all required Equipments and Instruments ● Logics Dry Run, Alarms and Trip set points ■ Perform MRT for 3 Hours or until its Bearing temperature become stable; which is longer ■ Check parameters as per Standard ■ After completion of MRT; all Temporary connections should be discontinued and Flanges to be Normalised 𝐴𝑛𝑦 𝐴𝑑𝑑𝑖𝑡𝑖𝑜𝑛𝑠...