ASME Code Case . e.g. slip-on flanges outside the size range of ASME B or, as is the case with analysis for flanges introduced by the ASME Code . Does anyone have or know where to locate ASME code case Application of the ASME Certification Mark? must be put on the MDR. Revised. 1 (). Revised. 1 (). Revised All Code Cases remain available for use until annulled by the ASME Boiler and.
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Documents Flashcards Grammar checker. Take for example the extensive and ongoing work to establish a universal database for pressure retaining equipment and components in Ontario. Periodic inspections of boilers and pressure vessels in the province of Ontario is a responsibility shared by TSSA and the insurance industry. As TSSA is responsible for inspecting uninsured equipment — believed to be a small percentage of all equipment currently in use in the province — this leaves the bulk of insured equipment being inspected by insurance companies licensed under the Insurance Act to undertake caxe and pressure vessel machinery insurance.
TSSA is continuing to work with the insurance industry, with strong support from the Boilers and Pressure Vessels Advisory Council, to develop an electronic process for receiving, collecting, storing and analyzing data for all pressure equipment in Ontario.
Recognizing the vital role that industry plays in this process and in the provision of azme relevant information, TSSA is committed to seeking to minimize any burden on insurance agencies.
We are truly appreciative to those companies who have been and are continuing to participate and cooperate with us on this very important initiative. Moving forward, TSSA has identified a two-pronged approach consisting of verification of boiler and pressure vessel data and the introduction of a quality assurance process this year with respect to BPV inspection quality assurance programs.
Another key initiative that we are continuing to forge ahead with is the application of riskinformed decision-making RIDM when it comes to inspecting power plants. This process, instituted in the Operating Engineers Zsme Program area over four years ago, focuses TSSA inspection activities on those plants that are demonstrating a higher level of non- continued on page 12 2 Issue 1 Incident Prevention Safety Devices: Coulter, Chief Officer, Operating Engineers, and Cathy Turylo, Engineering Manager, Boilers and Pressure Vessels Safety Program A low-water cut-off usually a float switch or level electrodeis a vital safety device for the prevention of a catastrophic boiler failure due to a low-water condition.
These devices are designed to shut off the burner or fuel supply to a boiler, preventing the boiler from operating below a minimum water level. Even before metal yielding occurs, if a small amount of feed water enters the overheated boiler, the water instantly boils on contact with the shell and leads 2741 an explosion that cannot be controlled even by safety valves. To note, a boiler in this state will not typically trigger the usual emergency alerts such as a smoke detector or azme alarm.
Boilers not continuously attended by a certified Operating Engineer, require low-water cut-off devices that can be tested under operational conditions. This includes registered unattended and attended guarded steam boilers,1 which must have two devices that are independent of each other and conform to the fail safe guarded control requirements.
Like any other mechanical safety device, these devices need to be tested periodically as floats can become water-logged, floats and probes can have scale and mud build-up — all of which can prevent proper movement or sensing of the water level. While low-water cut-offs are the topic at hand, we should not lose sight of caee cut-offs.
These are similar to the low-water units only they are designed to shut the boiler down in the event of a highwater condition that would lead to water carry over into the steam system.
What is the ASME CODE ?
This is also a potentially very dangerous event that can lead to the rupture of steam piping. An example of how this would appear on a nameplate is shown below. What is pressure gauge calibration? Document any deficiencies noted during the initial asmr and the method for their resolution, including how to deal with damaged items that cannot be adjusted, or repaired.
Re-test after any required adjustments have been performed, and calibration has been completed. Document required certification and calibration status including expiry date on completion. Pressure gauge calibration is a comparison between measurements cqse one of known accuracy made or set with an instrument such as a Dead Weight Tester or Master Gauge that has traceability to a National Measurement Standard, and another measurement made in as similar a way as possible with the pressure gauge that is being calibrated.
Pressure gauge calibration may be called for: Why do we calibrate pressure gauges? The pressure gauge manufacturer will often have calibration requirements detailed in their maintenance literature. This is a good source of information to help a user to prepare a detailed calibration procedure. Pressure gauge calibration should be performed in accordance with a written procedure that addresses all of the requirements to be observed during the calibration process.
The procedure should capture all of the steps necessary to ensure an acceptable calibration can be performed. It should include items such as, but not limited to: Properly calibrated pressure gauges help to ensure: Here is a summary of the requirements for these standard parts.
There are no significant changes in UG bthe subparagraph for cast, forged, rolled, or die formed non-standard pressure parts.
May be supplied by a Certificate Holder see Note 2 or a pressure parts manufacturer. Certificate Holder Need not be manufactured by a Certificate Holder. Shall be as permitted by this Division only. Inspection, identification, Pressure parts, such as welded standard pipe fittings, welding caps, and flanges that are fabricated by one of the welding dode partial data reports recognized by this Division do not require inspection, identification in accordance with UG a or UG bor Partial Data Reports.
Postweld heat treatment If required, it may be performed at the location of the parts manufacturer or casee location of the Manufacturer of the completed vessel. Radiography or other volumetric examination If required, it may be performed at the location of the Manufacturer of the completed vessel or the location of the pressure parts manufacturer.
If required, it may be performed at the location of the Manufacturer of the completed vessel, ase location of the pressure parts manufacturer, or the location of the parts Manufacturer. The name or trademark of the Certificate Holder or the pressure part manufacturer, and the markings required by the standard used for the pressure part; and b.
Codes and Standards
A permanent or temporary marking that will serve to identify the part with the written documentation of the part. Responsibilities of the Manufacturer of the completed vessel The Manufacturer of the completed vessel shall ensure that all standard pressure parts comply with applicable rules of this Division and are suitable dode the design conditions of the completed vessel. When volumetric examination is required, the completed radiographs, properly identified, with a radiographic inspection report, and any other applicable volumetric examination report shall be obtained.
Fulfillment of responsibilities The Manufacturer of the completed vessel shall obtain when necessary, documentation listed below, provide for retention of this documentation, and have such documentation caee for examination by the Inspector when requested. Minimum documentation Material used, the pressure-temperature rating of the part, and the basis for establishing the pressure-temperature rating. The Manufacturer of the completed vessel shall obtain when necessary, documentation listed below, provide for retention of this documentation, and have such documentation available for examination by the Inspector when requested.
Material used, asms pressure-temperature rating of the part, the basis for establishing the pressure-temperature rating, and a written certification by the pressure parts manufacturer that all welding complies with Code requirements. The rules above shall not be applied to welded shells or heads or to quick-actuating closures. A Certificate Holder may cse parts and mark codf in accordance with UG d. Bolts and nuts such as SA Gr. B7 and SA Gr. Examples of situations to be aware of include: Bolting is cse longer required to be included in the lowest stress ratio LSR calculation, see UG b.
This can affect the required hydrostatic test pressure for some pressure vessels.
For example, consider a pressure vessel constructed from SA Gr. B8, and to be tested at ambient temperature. Per previous Code rules, LSR would have been 1. What is a hubbed flange? If in calculation, value h hub lengthg0 thickness of hub at small end and g1 thickness of hub at back of flange are not equal to 0 then the flange is hubbed.
Where a cxse is required for the inspection opening, the minimum required size for a circular manhole is 16 inches internal diameter. To note, standard pipe 16 inches nominal pipe size has an outside diameter of 16 inches and therefore can not be used for a circular manhole as a Code required inspection opening. Putting Public Safety First www. Classes of equipment that are exempt from periodic inspection and the minimum frequency for those that are not exempt are provided for in section 4.
Who is required to periodically inspect the equipment? Qualified inspectors are employed by the TSSA or by an insurer. Insured boilers and pressure vessels are inspected by the insurer. Uninsured equipment is inspected by the TSSA inspector. At that time, the owner may be required to prepare the boiler or pressure vessel in such a fashion to facilitate access to the cade in order for an effective inspection to take place.
An inspection may also include an internal examination. The owner is responsible to ensure that the inspections are taken place and completed to the satisfaction of the insurer or TSSA inspector. Owners are responsible to comply with any instructions that are issued by the insurer or TSSA inspector. The certificate will indicate an expiry date prior to which the next inspection should take place.
A valid Certificate of Inspection is required to operate a boiler or pressure vessel in the province of Ontario. Owners are responsible to ensure that a valid Certificate of Inspection is in place for each boiler or pressure vessel that is in operation. If you have pressure equipment requiring periodic inspections — take note of your responsibilities — it is the law.
An insurer means a person licensed under the Insurance Act to undertake boiler and machinery insurance as defined by that Act. The Certificate of Inspection is issued from the insurer.
ASME Code and Stamps
In this situation, Finite Element Analysis Ame is often chosen as the tool as it is very powerful and relatively inexpensive. Unfortunately, many designers treat FEA programs as automated tools for design and ignore the fact that FEA can render solutions that are seriously flawed if conducted by an inexperienced person.
It is therefore very important that FEA be performed by someone who is experienced in this analysis, the particular software used asem the field of the design. It should, however, be understood that FEA may be used only for designs which are not covered by the rules of the Code.
The FEA report shall include the following: Type of elements used triangular, square, rectangular, etc. Number of Degrees of Freedom of the model. The element order must be at least second order. The turn angle of the elements in the mesh. The types of elements used h-elements, p-elements. The method used to estimate the error of the results and the maximum percentage of combined error. Results All results shall be included here.
The figures must be in colour and clear enlarged sections of some figures may be required.
In some cases, the figures should also be submitted in electronic form to facilitate review. Explanations and discussions on each figure must be provided.
Figures showing the following shall be provided. The mesh of the model. Introduction The introduction shall include the assumptions used to perform the design, the name ccode version of the software used, and the type of FEA analysis elastic, plastic, small deformations, large deformations, etc.