Creating new PEI Circuits

Circuit main grid

(Header bar)

Equipment main grid

(Side info bar)

Equipment details

(Hierarchy section)

Equipment ID

This field is auto populated based on the object from which you are creating the Circuit.

Hierarchy

Hierarchy path for this Circuit (read-only).

Circuit

It is advised to use some rules when defining the Circuit ID. E.g.:

Active

Indicator whether the Circuit is active or inactive.

Inspection Reason

Inspection Reason of the Circuit. When the inherit is active the Inspection Reason is inherited from the FLOC. The Inspection Reason determines the Time-Based Interval (see Calculation Summary) and if PERF is used. The CLASS 4 Inspection Reason will never apply PERF.

The list of available Inspection Reasons is set in Settings \ Maintenance \ Inspections/Schedules \ Inspection Reason.

IDAP Status

Column IDAP Status shows the actual state of the analysis and the required action:

• Analysis not started
• Analysis new data
• Analysis in progress
• Analysis completed, action required
• Analysis completed, no action required
• Analysis no data
• None

IDAP Status Comment

Short comment regarding the IDAP Status

Longitude / Latitude / Altitude

Geographic location based on coordinates on a map.

Suggested Corrosion Rate

Suggested rate, when Default is checked the rate is based on the default rate based on Equipment Group. See Corrosion Rate Calculations – Details.

Note: The suggested CR can be used to influence the CR used in the Calc Summary, or as starting point when there are no measurements.

IF Strategy

Interval Factor (IF) Strategy, either IMS or SRBI. If SRBI is selected the SRBI calculated IF will be linked to the Circuit to be used in the Corrosion Schedule NID calculation. The linked Component should, in this case, be analyzed for at least one AR DM. When there is no SRBI IF the Circuit will default to the IMS IF. See Tab: Corr Rates IF.

Interval Factor

IMS Interval Factor, default can be used based on Equipment Group. See Tab: Corr Rates IF.

RBI Interval Factor

When Circuit inherits from Component, (worst) RBI Interval Factor from linked Component is being used. (read-only)

RBI Inspection Strategy

The RBI Inspection Strategy (IS) is shown if applicable. (read-only)

Inherit Components

If the related Component(s) are already created, you can select the inherit Components now. You can also set the inheritance at a later stage or on the Component Details page.

Note: This links the Component IF to the Circuit and the Circuit specs (also CR and RCA) to the Components. Also, the CL to which the Component is linked, will be linked to the Circuit. See Relationship between CLs, Components and Circuits.

Corrosion Loop

If Corrosion Loop is empty, the Equipment is not assigned to a Corrosion Loop.

CL Component

The Corrosion Loop of the inherited Component (read only), only populated when Circuit is inherited with a Component. See Relationship between CLs, Components and Circuits.

Required Inspection Method

You can set a required Inspection Method (e.g. UT, RT) for all measurement for the Circuit (optional).

Description

Short description for the Circuit.

Special Emphasis

In case of Pipe and Pipe System Equipment, the Special Emphasis can be populated (when there is no pending event). The classification chosen determines the Maximum Inspection Interval (MII) allowed for the Calculation Summary and Corrosion Schedule.

Enable EVA

For Equipment of type bundles, you can enable Extreme Value Analysis (EVA) calculations. In this case an additional field will appear to enter the Number of tubes.

Calculation Method

Applied Calculation method, either:

• PLR, PSR, CAR, LR (including Circuit averages) – calc 1
• PLR, PSR, LR – calc 2

Default Calc Method is set automatically based on Equipment Group for the Circuit.

This also determines if the system checks for data scatter - only calc 1 does. Calc 1 should be used when there is a low confidence in the corrosion measurements (e.g. Aircooler, Bundle, Furnace, Incinerator, Pipe).

See Corrosion Rate Calculations – Details.

Ignore Calculation Interval

When checked, the Circuit ignores the calculated rates for the Next Inspection Date of the Circuit, only time interval will be applied. See Remnant Life (RL) and Next Inspection Date (NID) Calculations.