This standard is under the jurisdiction of the API Standards Subcommittee on For undated references, the latest edition of the referenced. API 6D|API|API 6A Std Cast Steel|Stainless Steel Valve. Pages·· API Specification 6D Twenty-second Edition, January ISO API Specification 6D. Specification for Pipeline and Piping Valves. TWENTY- FOURTH EDITION | AUGUST | PAGES | $ | PRODUCT NO.
|Language:||English, Arabic, Dutch|
|ePub File Size:||24.45 MB|
|PDF File Size:||16.34 MB|
|Distribution:||Free* [*Register to download]|
API ditaremcico.tk - Free download as PDF File .pdf) or read online for free. API Uploaded by. Nat Flores. API 5L 45th Edition. Uploaded by. Chelito Ix. API STD. Specification for Pipelineand Piping Valves, Twenty-Fourth Edition, Printed Edition + PDF;; Immediate download; $; Add to Cart. This edition of API Spec 6D supersedes the Twentieth Edition dated January 1, . latest edition or supplement in effect at the time of manufacture of the product.
This comparison applies only to Category D piping of B There are many British Standards available which can be used in piping engineering. The applicability of this code to piping systems extends from the point of delivery to the connections with the appliances and includes the design, materials, components, fabrication, assembly, installation, testing The book explains proven piping design methods in step-by-step processes that cover the increasing use of new technologies and software.
Certain piping within a facility should be recognized as normally subject to other codes and standards, when ASME codes, standards and conformity assessment programs, originally developed for fossil fuel-fired plants, were applied to nuclear power-plant construction. See "point of delivery". Factory-installed piping within room The codes that are referenced and the information provided in no sense relieves the customer of the responsibility to install gas piping and appliances in accordance with the latest revisions of the applicable governing codes that are listed in Section 2.
Even the Department of Defense DOD has either adopted many of these codes, or used them as a basis to develop their own codes known as Mil-Specs.
Color marking will make identification easier for raw material and fluid that being transport by the pipe. Extended coverage is provided for the piping lead to manage piping design activities, which include supervising, planning, scheduling, evaluating manpower, monitoring progress and communicating the piping design. General 1. Distribution of the PDF is not permitted.
Factory-installed piping within HVAC equipment tested and rated in accordance with a test procedure referenced by this code. The difference between piping codes and piping standards can be summarized: Piping Codes. Guide addresses only B One can say in general that there are three main codes in the piping and pipelines realm: the SME codes in the United States and many parts of the world; the Din codes in Europe and other European-leaning parts of the world; and the Japanese codes, which piping from the point of delivery to the most remote outlet in each branch and the load of the section.
This is when the piping requirements are defined such as desired working pressure, maximum pressure, maximum flow rate, acceptable pressure drops and classification requirements. Piping Code Paradoxes B The customer should always feel free to consult a company representative re- It provides the most complete coverage of the Code that is available today and is packed with additional information useful to those responsible for the design and mechanical integrity of process piping.
Nayyar P. The pipe size for each section of higher pressure gas piping shall be determined using the longest length of piping from the point of delivery to the most remote line pressure regulator. The following codes and standards shall be used together with this standard specification for materials, design and dimensional requirements.
Power piping means piping systems and their component parts, that are not building services piping systems, and that may be installed within electric power generating stations, industrial and institutional plants, utility geothermal heating systems, and central and district heating and cooling systems.
Mohinder L Nayyar, P.
Calculation of the overall stress-strain state of piping systems made from both metal and non-metal including composites materials, for given values of temperature, pressure, weight of the internal environment, self-weight of the structure, taking into account the kinematic conditions, as well as the Gas piping is inspected prior to being covered or concealed to insure that the type, size and installation meet the building code.
The approved modifications are included in the present issue of IPS. Piping transporting aqueous slurries between plants and terminals within terminals, pumping and regulating stations.
This Code is more conservative than some other piping codes, reflectingthe need for longservice life andmaximum reliability in powerplant installations. Download All-the-answers guide to plastic piping Written by expert David Willoughby, a year veteran in the field, Plastic Piping Handbook is a one-of-a-kind, comprehensive guide to the durable, economical piping solution used today in 90 percent of low-pressure liquid and natural gas installations.
Check valves may also be of the wafer type. Check valves shall have an obturator which responds automatically to block fluid in one direction.
There is no restriction on the upper limit of valve bore sizes. Full-opening through-conduit valves shall have a circular bore in the obturator that will allow a sphere with a nominal size not less than that specified in Table 1 to pass.
Welding-end valves may require a smaller bore at the welding end to mate with the pipe. Valves covered by this International Standard should be furnished in one of the following classes: The downloadr may specify intermediate design pressures and temperatures for his specific application.
Non-metallic parts may limit minimum and maximum operating pressures and temperatures. The maximum operating pressure at the minimum and maximum operating temperatures shall be marked on the nameplate.
Reduced-opening valves shall be furnished in the nominal sizes in accordance with Table 1. Except for reduced-opening valves, valve sizes shall be specified by the nominal sizes DN or nominal pipe size NPS. Reduced-opening valves with a circular opening through the obturator shall be specified by the nominal size of the end connections and the nominal size of the minimum bore of the obturator in accordance with Table 1, except that for valve sizes DN 50 NPS 2 or smaller the actual bore of the obturator shall be specified.
Reduced-opening valves with a non-circular opening through the obturator and reduced-opening check valves shall be designated as reduced-bore valves and specified by the nominal size corresponding to the end connections followed by the letter "R". Face-to-face and end-to-end dimensions for valve sizes not specified in Tables 2 to 6 shall be in accordance with ASME B The length of valves having one welding end and one flanged end shall be determined by adding half the length of a flanged-end valve to half the length of a welding-end valve.
Secure PDF Files
The nominal size and face-to-face or end-to-end dimensions shall be stated on the nameplate if not specified in or not in accordance with Tables 2 to 6. If not specified, the pressure rating as determined in accordance with 6. The manufacturer shall provide the following data to the downloadr: Clause A. Dimensions, tolerances and finishes, including drilling templates, flange facing, spot facing and back facing, shall be in accordance with: The downloadr shall specify the outside diameter, wall thickness, material grade, SMYS and special chemistry of the mating pipe, and whether cladding has been applied.
If fluid trapping is possible, then valves for gas service, unless otherwise specified by the downloadr, and liquid service shall be provided with an automatic cavity pressure relief. Cavity relief, when required, shall prevent the pressure in the cavity from exceeding 1,33 times the valve pressure rating determined in accordance with 6. The downloadr may specify other types of connections, such as welded or flanged. Threads shall be either tapered and capable of providing a pressure-tight seal or parallel-threaded.
Connections or plugs with parallel threads shall have a head section for trapping and retaining a sealing member suitable for the specified valve service.
Thread sizes shall be in accordance with Table 7.
The head design shall allow permanent attachment of the extended section if specified by the downloadr. The maximum force required at the handwheel or wrench to apply the breakaway torque or thrust shall not exceed N.
Api 6d Books
Wrenches shall not be longer than twice the face-to-face or end-to-end dimension of the valve. Handwheel diameter s shall not exceed the face-to-face or end-to-end length of the valve or 1 mm, whichever is the smaller, unless otherwise agreed.
When specified by the downloadr, the handwheel of the gearbox input shaft shall be provided with a torque-limiting device, such as a shear pin, to prevent damage to the drive train. Locking devices for check valves shall be designed to lock the valve in the open position only. The interface between actuators and valve bonnet or stem extension assemblies shall be designed to prevent misalignment or improper assembly of the components.
The interface between actuators and valve bonnet or stem extension assemblies shall be sealed with gaskets or O-rings to prevent external contaminants from entering the assembly. Means shall be provided of preventing pressure build-up in the actuator from stem or bonnet seal leakage. The output of the actuator shall not exceed the maximum load capacity of the valve drive train. NOTE This factor of safety is to allow for thrust or torque increase in service due to infrequent cycling, low-temperature operation and the adverse effect of debris.
A strength efficiency factor of 0,75 shall be used for fillet welds.
Deflections of the extended drive train shall not prevent the obturator from reaching the fully closed position. Specifications for metallic parts shall, as a minimum, specify the requirements for: Metallic pressure-containing parts, except stems and gaskets, shall be made of materials listed in ASME B Non-metallic parts of valves intended for hydrocarbon gas service at pressures of PN Class or above shall be resistant to explosive decompression.
The CE shall be calculated in accordance with the following formula: Requirements for the chemistry of welding ends made of other materials shall be established by agreement. A minimum of one impact test, comprising a set of three specimens, shall be performed on a representative test bar of each heat of the material in the final heat-treated condition.
Test specimens shall be cut from a separate or attached block taken from the same heat, reduced by forging where applicable, and heat-treated in the same heat treatment batch, including stress-relieving, as the product materials except that: Toughness testing may be performed during the qualification of the valve manufacturing procedure provided that the material for testing is heat-treated using the same equipment as during valve production.
Except for material for bolting, impact test results for full-size specimens shall meet the requirements of Table 8.
API 6D 24th edition :- Cavity Relief Test Pressure
Bolting material with a mechanical strength above ASTM A Grade B7 or hardness exceeding HRC22 shall not be used for valve applications where hydrogen embrittlement may occur, unless otherwise agreed.
For example, hydrogen embrittlement can occur in buried pipelines with cathodic protection. The results of all qualification tests shall be documented in a procedure qualification record PQR.
Post-weld heat treatment PWHT shall be performed in accordance with the relevant material specification. NOTE Some pipeline-welding standards, such as BS , may have more stringent requirements for the essential variables of welding. It may be necessary to provide full weld test rings, in the same heat treatment condition as the finished valve, for weld procedure qualification. A set of three weld metal impact specimens shall be taken from the weld metal WM at the location shown in Figure The specimens shall be oriented with the notch perpendicular to the surface of the material.
A set of three impact specimens shall be taken from the heat-affected zone HAZ at the location shown in Figure The notch shall be placed perpendicularly to the material surface at a location resulting in a maximum amount of HAZ material located in the resulting fracture.
Specimens shall be etched to determine the location of the notch. The impact test temperature for welds and heat-affected zones shall be at or below the minimum design temperature specified for the valve. Impact test results for full-size specimens shall meet the requirements of Table 8. The downloadr shall specify which particular supplementary NDE requirements in Annex B shall be performed. Repair welds on pressure-containing parts shall be examined using MT or PT methods.
Acceptance criteria shall be specified in documented procedures. The supplementary NDE requirements in Annex B, if specified by the downloadr, shall also apply to repair welding.
The downloadr shall specify which particular supplementary tests in Annex C shall be performed, together with the frequency of testing. Testing shall be performed in the sequence used in this clause for specifying the test requirements. Shell pressure testing shall be carried out before painting of the valves. Test fluids shall be fresh water which may contain a corrosion inhibitor and, by agreement, antifreeze.
Valves shall be tested with the seating and sealing surfaces free from sealant except where the sealant is the primary means of sealing. Tests specified with the valve half-open may also be performed with the valve fully open provided the body cavity is simultaneously filled and pressurized through a cavity connection.
A sufficient stabilization period shall be allowed for all pressure tests. Pressure testing shall be performed in accordance with documented procedures.
Where a valve has a stem backseat feature, testing of the backseat shall commence with the seat free. Self- energized packing or seals shall be removed unless a test port is provided for this test. The valves shall be filled with the ends closed off and the obturator in the partially open position until leakage of the test fluid around the stem is observed.
The backseat shall then be closed and a minimum pressure of 1,1 times the pressure rating determined in accordance with 6. Monitoring for leakage shall be through a test access port or by monitoring leakage around the loosened packing. No visible leakage is permitted at this test pressure. Valves shall be closed off and the obturator placed in the partially open position during the test. If specified by the downloadr, the method of closing the ends shall permit the transmission of the full-pressure force acting on the end blanks to the valve body.
Where present, external relief valves shall be removed and their connections plugged. The test pressure shall be 1,5 or more times the pressure rating determined in accordance with 6. The duration shall not be less than that specified in Table After hydrostatic shell testing, external relief valves shall be re fitted to the valve.The supplementary NDE requirements in Annex B, if specified by the downloadr, shall also apply to repair welding.
Seat tightness shall be monitored via overflow through the valve cavity connection. Mohinder L. They were placed on your computer when you launched this website. Bonnet 1.
- GRABB AND SMITH 7TH EDITION PDF
- API 686 2ND EDITION PDF
- DATABASE SYSTEM CONCEPTS 5TH EDITION PDF
- ABNORMAL CHILD AND ADOLESCENT PSYCHOLOGY 8TH EDITION PDF
- NEFROBLASTOMA PDF
- JQUERY 1.4 REFERENCE GUIDE PDF
- DEUTSCH PERFEKT PLUS PDF
- CORPORATE FINANCE 8TH EDITION EBOOK
- AMPLIFIED BIBLE EPUB
- SIGHT AND SOUND MAGAZINE PDF
- BIBLE STUDY COURSES PDF
- KHULLAR GEOGRAPHY PDF
- BENKELMAN BEAM DEFLECTION METHOD PDF DOWNLOAD