Mandatory Edition and Addenda means: WHAT?
Mandatory Edition and Addenda means: WHAT?
(OP)
According to ASME B&PVC is it permitted to use old edition and addenda?
Lets say that now on 21st of February 2006, we are signing a contract for boiler according to ASME B&PVC Section I.
1) What would be the mandatory code edition and addenda?
2) If client says that this boiler shall be made according to 2001 Edition, is it permitted to certify MDR according to 2001 Edition without considering the current code mandatory edition and addenda requirements?
Regards,
Lets say that now on 21st of February 2006, we are signing a contract for boiler according to ASME B&PVC Section I.
1) What would be the mandatory code edition and addenda?
2) If client says that this boiler shall be made according to 2001 Edition, is it permitted to certify MDR according to 2001 Edition without considering the current code mandatory edition and addenda requirements?
Regards,





RE: Mandatory Edition and Addenda means: WHAT?
Any locality reqmt would of course take precedence over any Code.
Normally you'd use the latest Code edition/addenda in effect. However, the locality or client reqmt. is the dictate, in my opinion.
j.
RE: Mandatory Edition and Addenda means: WHAT?
RE: Mandatory Edition and Addenda means: WHAT?
Good question. However if you think about large sized Projects which take several years from inception to completion. If for example the Design Code is specified in the Contract as the "curent edition" then at the Contract award the Vendor should be using the latest Code, however by the end of the Contract (or even during the Contract) a new edition may be released. You would not really expect the Vendor to check his design again to the newly issued Code would you. My belief is that it is the present Code at the Contract award.
RE: Mandatory Edition and Addenda means: WHAT?
My belief is laso same with you.
USER shall designate the edition and addenda as per ASME Section VIII Div.2 AG-301.1 (d)
In the mean time signing the contract with USER and Contractor mandatory edition and addenda shall be defined.
if several years later or immediately contractor may subcontract pressure vessel to the Vessel Manufacturer, in this case Contractor shall inform the Vessel Manufacturer about code edition and addenda.
only remaining guestion is:
by the mean time signing contract between User and Contractor; is it permitted to define earlier edition and addenda?
RE: Mandatory Edition and Addenda means: WHAT?
For U.S. nuclear plants, there is a specific "Code of Record" for the plant, which means that the plant was licensed as being in compliance with a certain edition and addenda of the Code. Changes to the plant, or modifications, could be required to be to the specified Code of Record, even though newer versions of the Code are available. Alternatively, the designer might be required to do a "Code reconciliation" to show why using the newer code would meet or exceed the licensed basis.
Additionally, NRC has not always approved the latest version of the Code for use in nuclear applications. There a designer might not be permitted to use that Code at all.
Finally, for nuclear applications in the portion of the plant which is deemed "safety-related", the NRC regulations take precedence over local requirements. (Personally, I would question a local requirement that takes precedence over the ASME Code, unless the requirement was in a more conservative direction.)
Patricia Lougheed
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RE: Mandatory Edition and Addenda means: WHAT?
Codes or standards in themselves are not laws. Individual states establish laws regarding pressurized equipment. As for the NRC, I'm sure any state B&PV laws are established in conjunction w/ NRC.
Check it out. Any good engr. will do this as routine practice on each new project.
RE: Mandatory Edition and Addenda means: WHAT?
I am dealing with that exact same point of view. We are currently doing design work for the next generation nuclear plant. Our plant’s Design Certification (as approved by the NRC) is based on ASME 1998 edition through 2000 addenda.
I posted the question below about code reconciliation, knowing that by time we are ready to actually purchase equipment and start construction there will be later code editions (there already are). I was curious how others deal with that. If we use a later code, we will have to show that nothing has been “weakened” and is either the same or better by a review and reconciliation process per NCA-3554. We will also have to get approval from the NRC if we use anything later. A revision or addenda to the Design Cert Report will be required. In the case of nuclear plants the NRC trumps everyone else (local, state, and for that matter ASME).
I am finding that equipment suppliers/manufacturers often design and build to earlier editions of the code. It seems one of the biggest issues is materials. Oftentimes materials are spec’d that were not in the earlier code editions.
RE: Mandatory Edition and Addenda means: WHAT?
Talk to your AIA----you must be in agreement.
RE: Mandatory Edition and Addenda means: WHAT?
ASME SECTION VIII Div. 2 is in final draft for up comming release.
as Reported by Kam in meeting Houston February 22-24, 2006
Please review the following
code case
2211
2235
2168
2268
2260
2150
2310
2243
2286
N284
WRC
335
444
435
406
368
501
FSI
FLUID STRUCTURAL INTERACTION
PRA (ASME DRAFT)
PROBLE RICK ANALYSIS
ASME TECHNICAL PROBLEM RULE:
SOFT CONVERSION (25.4) soft.
HARD CONVERSION (25.0) hard