Replacing a Part

The Replace Part Utility allows you to replace one part with another.

Open the Replace Part Utility

1. Click the Repair or Replace Parts link.
2. In the Repair or Replace Parts utility, select the part you wish to replace.
3. Click the Replace Part icon to open the Replace Part Utility, where you’ll enter details for both the “old” part (the one you are replacing) and the “new” (replacement) part.

Assign a Failure Type and Disposition

The part's failure type, together with the incident category, determines how data will be extracted for use in reliability analyses. Like an incident category, a failure type may be “chargeable” (e.g., a Primary Failure) or “non-chargeable” (e.g., a Primary Suspension or Collateral Failure). The combination of the incident category and failure type determines whether the incident is treated as a failure (F) or suspension (S) for that specific part number.

• If both the incident category and failure type are chargeable, it is considered a failure.
• If either or both incident category and failure type are non-chargeable, it is considered a suspension

An application admin determines which failure types are available for your XFRACAS implementation and whether these types are chargeable or non-chargeable. The following options are some examples of how your organization may define failure types:

• Primary Failure - applies when the part fails and must be repaired, replaced or removed.
• Primary Suspension - applies if you removed the part before it failed (for an upgrade, maintenance, use in a different system, etc.)
• Collateral Failure - indicates that the part failed as a direct result of the primary failure — e.g., a hose breaks (primary failure) and leaks fluid on a circuit board (collateral failure).
• Collateral Suspension - indicates that the part was removed due to the removal or repair of a part that did not fail — e.g., in the course of upgrading a circuit board (primary suspension), you strip a screw (collateral suspension).

Disposition indicates what you did with the part that was removed from the system (e.g., “Send to Engineering,” “Scrap,” “Return to Supplier,” etc.).

Specify a Replacement Part

You can specify a brand new replacement part or, if you are working in a serialized system, a used part that already exists in the entity.

New Parts

If you specify a new replacement part that is not in the current template (i.e., you’re providing a new part number), it will be added to the template; otherwise, the current template remains unaffected. In either case, if you are replacing a serialized part, it will be inserted into the current serialized system.

Used Parts (Serialized Systems Only)

You can also specify a used part — one that was previously removed from another serialized system — as the replacement. This inserts the used part into the current system. When you extract data to Weibull++ for reliability analysis, the part's time/usage history will be calculated based on its prior accumulated (starting) age, plus any additional run time before the next failure. (See "If Applicable, Record Time/Usage.")

In addition, you have the option of replacing a part (e.g., a part on "System A") with one that you are simultaneously removing from another serialized system (e.g., "System B") by specifying its name, part number and serial number. However, this will not record time/usage for the replacement part on System B at the time of its removal. Instead, we recommend removing the part with the Remove Part Utility before using it as a replacement in another system. This two-step process will ensure that the part's entire time/usage history can be captured from System B for reliability analyses.

Note: To use a replacement part that’s not already on the current template, you’ll need the “Incident - Allow Serialized System Modifications” user permission.

Indicate Whether to Include Child Parts (Serialized Systems Only)

On a serialized system, if you are replacing an assembly that contains child parts, you may be able to save time by using the Copy all children of replaced part option.

Note: This option applies to new replacement parts only (see "Specify a Replacement Part"). If you are replacing a part with an existing (used) part, its children will be included (with their serial numbers, if applicable) regardless of whether you enable this option.

• Enable Copy all children of replaced part when you want the new assembly to match the configuration of the old one, with the same part number and children. You can only enter a serial number for the entire assembly; to enter serial numbers for child parts, use the Add/Modify Parts link (this requires the “Incident - Edit Serialized Part Information” user permission).
• Do not enable this option if the replacement part has different children; instead, use Add/Modify Parts to manually add them. (This may apply if the template contains more than one instance of the same part — e.g., three power supplies with different designs or options.)

If Applicable, Record Time/Usage

If the time/usage data (e.g., “Run Hours,” “Number of Starts” or “kw Run Hours”) for the part you are replacing differs from the time/usage data for the system, you can enter it here; otherwise, this will be set automatically based on the part’s starting age on the system and the time/usage metric(s) specified in the System/Component Information area of the Incident page.

If the replacement part is used (and therefore has already accumulated age), you can enter its Starting Age (“Run Hours,” “Number of Starts” or “kw Run Hours”).

If you extract data for a used part to Weibull++ for reliability analysis, its time/usage will be calculated as follows:

100 hours (starting age) + 200 hours (additional run time on system before the next failure) = 300 hours