AP-341-503 - Technical Evaluation of Replacement Items

Question 1

AP-341-503
A replacement item is considered like-for-like if one of the following applies:

Answer 1

1. The item is provided from the original equipment manufacturer (successor companies that maintain equivalent quality controls are acceptable), and has not been subject to design, materials, manufacturing, or nomenclature changes.
2. The item was purchased at the same time and from the same supplier, as determined by the purchase date, shipping date, date code, or batch/lot identification.
3. Evaluation of the item confirms that no changes in the design, materials, or manufacturing process have occurred since the procurement of the original item.

Question 2

What is AP-341-503 for, and what are the relevant attachments and forms?

Answer 2

Technical Evaluation of Replacement Items

AP-341-503-FM01
Replacement Item Preliminary Evaluation
AP-341-503-FM02
Like-for-Like Replacement Item Evaluation
AP-341-503-FM03
Equivalent Replacement Item Evaluation
**Attachment A **
Like-for-Like Replacement Item Evaluation
**Attachment B **
Equivalent Replacement Item Evaluation

Question 3

AP-341-503
A design change is not required if the equivalency of the (_ _ _ _ _ _ _ _ _ _ _ _) of a replacement item is established. The basis for this premise is that the SSC’s design has not been altered.

Answer 3

Technical Evaluation of Replacement Items
form, fit, function, and interchangeability (including seismic and environmental qualification requirements)

Question 4

AP-341-503
The knowledge of (_ _ _ _ _ _ _ _ _ _ _ ) of a ML-1 and ML-2 item is essential for performing technical evaluation of a replacement item. The original item’s procurement specification and/or its design criteria (i.e. applicable codes and standards) are sources of its ( _ _ _ _ _ _ _ _ _ _ ) for design. When ( _ _ _ _ _ _ _ _ _ _ ) of the item are not known then ( _ _ _ _ _ _ _ _ _ _ ) of the original item must be determined in accordance with ( _ _ _ _ _ _ _ _ _ _ _) prior to proceeding with technical evaluation of the item.

Answer 4

Technical Evaluation of Replacement Items

critical characteristics (x4)

AP-341-607, Determination of Critical Characteristics for Design of Safety Related Items

Question 5

AP-341-503
Define Equivalency Evaluation

Answer 5

Technical Evaluation of Replacement Items
A technical evaluation performed to confirm that a replacement item (not identical to the original) can satisfactorily perform its intended functions, including its safety functions.

Question 6

AP-341-503
Define *Equivalent Replacement *

Answer 6

Technical Evaluation of Replacement Items
A replacement item not physically identical to the original. These items require equivalency evaluation to ensure that the intended functions, including its safety functions will be maintained.

Question 7

AP-341-503
Define Identical Item

Answer 7

Technical Evaluation of Replacement Items
An item that exhibits the same technical and physical characteristics (physically identical).

Question 8

AP-341-503
Define Like-for-Like Replacement

Answer 8

Technical Evaluation of Replacement Items
The replacement of an item with an item that is identical.

Question 9

AP-341-503
The like-for-like replacement items procured from a vendor who is not on the IESL for supplying the subject items require dedication in accordance with (_ _ _ _ _ _ _ _ _ _ _ _).

Answer 9

Technical Evaluation of Replacement Items

AP-341-703 Item Dedication

A like-for-like determination shall not be based solely for item manufactured to meet the same industry standards as the original item that is to be procured from a vendor who is not on the Institutional Evaluated Suppliers List (IESL) for supplying the subject item. Meeting those same industry standards may be a necessary condition, but may not be a sufficient condition for a like-for-like determination.

Question 10

AP-341-503
A like-for-like item has the same form, fit, and functional requirements as the original item. This determination is made through (_ _ _ _ _ _ _ _ _ _ _ ) and ( _ _ _ _ _ _ _ _ _ _ _).

Answer 10

Technical Evaluation of Replacement Items

planned coordination with the supplier

by reviewing any existing technical and quality requirements for the item in its specific application(s)

Question 11

AP-341-503
The availability of (_ _ _ _ _ _ _ _ _ _ _ _) is essential for making like-for-like evaluation.

Answer 11

Technical Evaluation of Replacement Items
correct and sufficient technical information

Question 12

AP-341-503
The two ways the technical information can be obtained (in a like-for-like replacement item evaluation) are:

Answer 12

Technical Evaluation of Replacement Items

1. Published Supplier Controlled Documents
− Part drawings
− Assembly drawings
− Supplier catalogs
− Supplier technical manuals
− Supplier product specifications
− National codes and standards

2. Supplier Technical Information Obtained from Other Than Controlled or Published Documents
The source of information is the most significant factor in attaining confidence that the technical information provided by the supplier is correct.

Question 13

AP-341-503
When the replacement item is different from the original, the procurement is called (_ _ _ _ _ _ _ _ _ _ _ ), and an ( _ _ _ _ _ _ _ _ _ _ ) is necessary to verify that the ( _ _ _ _ _ _ _ _ _ _ _) is equivalent to the original and thus suitable for its intended application.

Answer 13

Technical Evaluation of Replacement Items
Alternate Item

Engineering Evaluation

Alternate Replacement Item

Question 14

AP-341-503
The equivalency evaluation includes the following three things:

Answer 14

**Technical Evaluation of Replacement Items

▪ Identification of the change(s) in design, material, manufacturing process, configuration, form, fit, or function of the replacement item that is different from the original item
▪ Evaluation of the change(s)
▪ Confirmation that the change(s) does not adversely affect the current design or safety functions of the item

Question 15

AP-341-503
Equivalency evaluations are not to be used as the sole basis to accept items. Selection and verification of the identified critical characteristics by appropriate acceptance method (s) in accordance with (_ _ _ _ _ _ _ _ _ _ _ _) is required to verify the acceptability of the replacement item.

Answer 15

Technical Evaluation of Replacement Items

AP-341-703 Item Dedication

Question 16

AP-341-503
What are the two approaches that may be used for evaluating alternate replacement items and determining whether they are equivalent to the original and, therefore suitable for its intended application(s)?

Answer 16

Technical Evaluation of Replacement Items
1. Comparison of Critical Characteristics for Design
2. Evaluating the Effects on Bounded Technical Requirements

Question 17

AP-341-503
The equivalency evaluation includes the following three things:

Answer 17

Technical Evaluation of Replacement Items

▪ Identification of the change(s) in design, material, manufacturing process, configuration, form, fit, or function of the replacement item that is different from the original item
▪ Evaluation of the change(s)
▪ Confirmation that the change(s) does not adversely affect the current design or safety functions of the item

Question 18

AP-341-503
A determination of the most appropriate approach (for evaluating alternate replacement items) should be based on what four factors?

Answer 18

Technical Evaluation of Replacement Items
A determination of the most appropriate approach should be based on the following factors:
1. The type and extent of physical changes made to the alternate item
2. The complexity of the replacement item
3. The design function(s) of the replacement item
4. End-use application(s)

Question 19

AP-341-503
This approach (to equivalent replacement item evaluation) is typically used in situations where the specifications and other design output documents for the replacement item are not controlled as technical baseline documents, which is commonly the case for subcomponents and parts of components.

Answer 19

Technical Evaluation of Replacement Items

Comparison of Critical Characteristics for Design.

Determination and evaluation of critical characteristics for design of replacement items that do not have specifications and drawings provide a basis for concluding whether the replacement items are equivalent to items currently installed in the facility.

Question 20

AP-341-503
The process for determining critical characteristics for design is described in (_ _ _ _ _ _ _ _ _ _ _ _).

Answer 20

Technical Evaluation of Replacement Items

AP-341-607, Determining Critical Characteristics for Design of Safety Related Items

Question 21

AP-341-503
Critical characteristics for design are properties or attributes that are essential for the item’s (_ _ _ _ _ _ _ _ _ _ _ ) as credited in the ( _ _ _ _ _ _ _ _ _ _ ). These are identifiable and/or measurable attributes of a replacement item that provide assurance that the replacement item will perform its ( _ _ _ _ _ _ _ _ _ _ _).

Answer 21

Technical Evaluation of Replacement Items

form, fit, and safety related functional performance

approved safety basis

safety design function.

Question 22

AP-341-503
This approach (to equivalent replacement item evaluation) is most effective at the component or system level, where the design output documents (such as technical baseline specifications and drawings) are available.

Answer 22

Technical Evaluation of Replacement Items

Evaluating the effects on Bounded Technical Requirements

Determination and comparison of critical characteristics for design, as such, are not required in these situations because the technical requirements related to the design basis functions and requirements (such as design codes) have already been established through the design activities and are included in the design output documents.

Question 23

AP-341-503
In an equivalent replacement item evaluation, If the change(s) adversely affects or is not bounded by the current design bases, the replacement item is not equivalent and is rejected or…

Answer 23

Technical Evaluation of Replacement Items
…processed as a design change in accordance with AP-341-517, Design Change Form.

Question 24

AP-341-503
When equivalency has been demonstrated for one application of an item, it is not automatically guaranteed for all similar applications. The equivalency evaluation must be directly related to the item’s…

Answer 24

Technical Evaluation of Replacement Items
…design function(s) and failure mechanism(s)/mode(s), including bounding conditions for environmental parameters during normal operation and abnormal events.

Question 25

AP-341-503
A generic equivalency evaluation is based on the particular item’s design function(s) in a given or worst-case application.

Answer 25

Technical Evaluation of Replacement Items

generic equivalency

The end-use application establishes the bounded technical requirements or design basis requirements that the item must meet.

The generic equivalency evaluation establishes the critical characteristics for design based on those design functions and facility application(s) on a generic basis but allows the actual design requirements to be identified and compared on a case-by-case basis.

Generic equivalency evaluations are suitable for commodity-type items such as resistors, capacitors, O-rings, belts, lubricants, fasteners, and, in some cases, even more complex devices such as relays and breakers.

Question 26

AP-341-503

If the item is ML-1 or ML-2 and is identical to the original item then check “Yes” and…

Answer 26

Technical Evaluation of Replacement Items
…complete form AP-341-503-FM02, Like-for-Like Replacement Item Evaluation.

Question 27

AP-341-503
If the item is ML-3 or ML-4 then check “Yes” and:

Answer 27

Technical Evaluation of Replacement Items
1. Update master equipment list (MEL) in accordance with AP-341-404, Master Equipment List with the replacement item information when original item is listed in the MEL; and
2. Initiate procurement in accordance of the replacement item in accordance with P840-1, Quality Assurance for Procurements.

Question 28

AP-341-503
If the item is ML-1 or ML-2 and is not identical to the original item then check “Yes” and complete…

Answer 28

Technical Evaluation of Replacement Items
…form AP-341-503-FM03, Equivalent Replacement Item Evaluation.

Question 29

AP-341-503

Answer 29

Technical Evaluation of Replacement Items

Question 30

AP-341-503

Answer 30

Technical Evaluation of Replacement Items