non conforming condition n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Non-conforming Condition PowerPoint Presentation
Download Presentation
Non-conforming Condition

Loading in 2 Seconds...

play fullscreen
1 / 8

Non-conforming Condition - PowerPoint PPT Presentation


  • 113 Views
  • Uploaded on

Non-conforming Condition. © 1999-2009 L.A. Grime, PE. What is the definition of ‘non-conforming condition?’. Non-conforming Condition. IM Section 3.6 “Nonconforming Condition”.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Non-conforming Condition' - stedman


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
non conforming condition
Non-conforming Condition

© 1999-2009 L.A. Grime, PE

What is the definition of ‘non-conforming condition?’

non conforming condition1
Non-conforming Condition

IM Section 3.6 “Nonconforming Condition”

“A nonconforming condition is a condition of an SSC that involves a failure to meet the CLB or a situation in which quality has been reduced because of factors such as improper design, testing, construction, or modification.”

non conforming examples
Non-conforming Examples

IM Section 3.2 “Degraded Condition”

  • “There is failure to conform to one or more applicable codes & standards (e.g., the CFR, operating license, TSs, UFSAR, and/or licensee commitments).
  • An as-built or as-modified SSC does not meet the CLB.
  • Operating experience or engineering reviews identify a design inadequacy.
  • Documentation required by NRC requirements such as 10 CFR 50.49 [Equipment Qualification] is unavailable or deficient.”
non conforming example
Non-conforming Example

Example1:

Unit personnel found that certain feedwater coolant system support equipment was non-seismic. The unit FSAR states that the system is designed to be seismic. The equipment was nonconforming due to a failure to meet a licensee UFSAR commitment.

Formal evaluation was required and determined that the system could be considered operable.

1 Examples based on 10/21/94 NRC letter to R. M. Kacich.

non conforming example1
Non-conforming Example

Example1:

Unit personnel found that portions of the low pressure coolant injection/core spray piping systems could not meet code allowable stress values during certain post-accident postulated conditions. The equipment was nonconforming due to a failure to meet a requirement or licensee commitment.

Formal evaluation was required and determined that the system could be considered operable.

1 Examples based on 10/21/94 NRC letter to R. M. Kacich.

non conforming example2
Non-conforming Example

Example1:

Unit personnel found that the control room emergency ventilation system configuration was such that application of the dose conversion factor standard referenced in the FSAR would yield unacceptable results. The equipment was nonconforming due to a failure to meet a requirement.

Formal evaluation was required and determined that the system could be considered operable. The determination relied on use of a more recent, and NRC accepted-for-use-at-the-unit, dose conversion factor standard.

1 Examples based on 10/21/94 NRC letter to R. M. Kacich.

non conforming vs degraded
Non-conforming vs. Degraded

A non-conforming condition usually results from a discovery that, since the original installation or modification, an SSC failed to meet a requirement or licensee commitment.

A degraded condition typically results from wear, deterioration or a component failure that causes a functional capability reduction.

“The discovery of an improper or inadequate TS value or required action is considered a degraded or nonconforming condition.”

points to remember
Points to remember...

‘A condition of an SSC in which there is failure to meet NRC requirements or licensee commitments’ is a non-conforming condition.

The NRC requirements and commitments are in the Code of Federal Regulations, operating license, unit CLB, TS, UFSAR and other licensee commitments.