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Covered Piping Systems O M Programs for CCGT Plants. A great level of risk is present when operating pressurized systems. Over the years, industry safety concerns have increased with the occurence of catastrophic events. To help prevent further loss and damages, expanded requirements for operations and maintenance O M were added to the ASME Code for Pressure Piping, B3. Power PipingASME B3. Chapter VII Operation and Maintenance was created in 2. This was a fundamental change to the scope of B3. Plant management teams have relied on these standards for designing, as well as updating, their maintenance programs. VfIHcOzXyc/hqdefault.jpg' alt='Cracking Visual Basic Programs' title='Cracking Visual Basic Programs' />Industry experience shows that combined cycle gas turbine CCGT plants owned by investment groups, municipal power companies, and others without large in house engineering staffs find themselves needing to take action. This is less of an issue for regulated utilities that have established high energy piping programs, which may address most of the requirements, although some of the failures, including incidents at W. A. Parish and Iatan, occurred at plants operated by regulated utilities. Incidents Lead to Changes. KB/security/Crack_Caesar_Cipher/3.jpg' alt='Cracking Visual Basic Programs' title='Cracking Visual Basic Programs' />The latest version of the ASME Power Piping code, published in 2. It was the work of committees and experts that drew conclusions from some unfortunate events. Formal amendments were enacted in previous editions of the B3. The demoscene is an international computer art subculture that specializes in producing demos small, selfcontained computer programs that produce audiovisual. Properly maintaining your covered piping systems is one of the most important elements of an OM program. Your onestop guide to writing success. Red Alert 2 Free Download Full Game Exe. Doing Your Homework Tips for Cracking the Educational Market by Christine Venzon. Civil Engineering Program BASc The undergraduate program is designed to complement traditional technical training with exposure to aspects of broadbased. Two well known incidents served as catalysts for change. One of them took place at the W. A. Parish Station in 2. A cold reheat steam pipe failed and caused a great amount of property damage. Extensive analysis, using such tools as metallographic examinations, computational fluid dynamics, finite element analysis, and fracture mechanics, concluded that fatigue cracking caused the pipeline to explode. In 2. 00. 7, the Iatan power plant desuperheater attemperator spray line suffered a failure incident caused by flow accelerated corrosion FAC. Property damage as well as personnel loss resulted. Clownfish Plugin For Teamspeak 3 Overlay'>Clownfish Plugin For Teamspeak 3 Overlay. 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The ASME covered piping systems CPS O M program places the responsibility for safe operation and maintenance of power piping on the operating company. Management is charged with implementing a CPS O M program plan and conducting surveillances, preventive maintenance, and inspection activities that identify potential problems before degradation progresses to component failure or leakage. A typical scope of a CPS program includes pipe systems that have a 4 inch nominal pipe diameter or greater and additional systems the owners deem important. The most common systems and components are High pressure HP steammain steam, including heat recovery steam generator HRSG HP steam outlet manifold to steam turbine admission and HP steam bypass from HP steam piping to cold reheat modern combined cycle plant configurations. Hot reheat HRH steam, including HRSG reheat steam outlet manifold to steam turbine admission and HRH bypass to condenser. Cold reheat CRH steam, including HP steam turbine nozzle to HRSG reheater inlet manifold, intermediate pressure IP steam from HRSG IP superheater outlet to merge with CRH steam, the portion of the HP bypass to CRH that is downstream of the desuperheater spray valve, extractions to gland steam systems, extractions for combustion turbine steam injection, and extractions for condenser sparging. Low pressure LP steam, including HRSG LP superheater steam outlet manifold to steam turbine admission, LP steam bypass to condenser, and LP sparging steam to condenser. Feedwater, including suction from LP drum or condensate pumps discharge to boiler feedwater pump nozzle, HP discharge from feedwater pump nozzle to HRSG HP economizer inlet, IP discharge from feedwater pump nozzle to HRSG IP economizer inlet, feedwater supply to fuel gas heater if installed, feedwater supply to HP steam bypass to CRH desuperheater sprays, feedwater supply to CRHseal steam desuperheater sprays, and feedwater supply to other auxiliary spraywater services. Chapter VII covers the basic elements that a program should include. From O M procedures to condition assessment and CPS records, the code highlights the most important facets of the program. Generally, the O M section focuses on operation modes, documentation, and assessment of degradation. Although each operating company can establish its own O M procedures, the following aspects shall be covered Operation of piping systems within design limits. Documentation of system operating hours and modes of operation. Documentation of actual operating temperatures and pressures. Documentation of significant system transients or excursions, including thermal hydraulic events for example, steam hammers or liquid slugging. Documentation of modifications, repairs, and replacements. Documentation of maintenance of pipe supports for piping operating within the creep regime. Documentation of maintenance of piping system elements, such as vents, drains, relief valves, desuperheaters, and instrumentation, necessary for safe operation. Assessment of degradation mechanisms, including, but not limited to, creep, fatigue, graphitization, corrosion, erosion, and FAC. Quality of flow medium for example, dissolved oxygen and p. H. Documentation of the condition assessment. The condition assessment details the items to be recorded. Special consideration is given to design temperatures and pressures, pipe material specification, pipe diameters, and the like. The CPS records emphasize the importance of easy access to this information. Documents that extend from the beginning of operation and later modifications are to stay available. Initiating a CPS Piping Program. Typically, a CPS program incorporates a scope technical and administrative, degradation mechanisms that affect piping, and overall framework for managing reliability. The technical side covers hanger inspections, Grade 9. FAC inspections, thermal shockimpingement assessments, and watersteam hammer. The administrative scope includes management responsibilities, program plan, inspections, fitness for service using API 5. ASME FFS 1 Fitness for Service, corrective actions, and alterations. Cracking Visual Basic Programs' title='Cracking Visual Basic Programs' />This article focuses on the technical part of the program. Hanger inspections evaluate the overall state of piping hangers. From visual inspection to recordkeeping, this plan determines hanger condition during operation hot and offline cold. Action steps are addressed in the event a field anomaly is present Figure 1. Repairs and alterations to hangers are not required to be performed by an R stamp holder and often are performed by knowledgeable plant maintenance personnel. Hanger adjustments are made in the cold condition while the settings are confirmed in the hot condition. A record of activities is to be kept in field reports andor in computer software Figure 2. Field inspection intervals are to be performed by a piping engineer every three years in addition to annual walkdowns by plant personnel. Hanger support anomaly. In this image, the variable spring pipe support is topped out and needs to be adjusted. Courtesy Tetra Engineering Group. Recordkeeping. This computer screenshot shows one way to adequately document inspection data. Courtesy Tetra Engineering Group. Grade 9. 1 and creep evaluations have become an integral part of power piping scope. A great deal of industry attention has been placed on issues related to degraded and failed Grade 9.