WorkflowPipelines, Midstream & LNG

In-Line Inspection Report Review

In-line inspection report review that applies the vendor's own written caveats to the listing rows they change, before the discovery clock runs out.

See the demo Book a demo

Follow one feature from page 212 to a dig package ↓

The problem

The report says the tool ran too fast, and the listing never mentions it

The feature listing lands first, tens of thousands of rows, and the written final report follows weeks later, hundreds of pages long. By then the clock on the assessment is well under way. The engineer lines the new run up against the old ones in a spreadsheet, runs the deep features through the calculation tool, and skims the report when there is time.

So a speed excursion, a dark sensor carrier or a slipped odometer stays in the PDF, and the rows it affects are decided as if the tool were in spec. Old dig sheets sit in the document system and rarely meet the neighbors they describe. And the call not to dig a feature is often one row in a spreadsheet, with nothing an auditor could follow.

Built forIntegrity engineersIntegrity managersDig coordinatorsVendor liaisonsCompliance auditors

The Problem Today

Each run brings a huge listing and a long report, and what the report says in words rarely reaches the rows.

180 days: after an assessment, for enough information on each condition published

Compared by hand today

Listings
Reports
Dig sheets
Run logs

Growth on weak matchesA wrong match across runs makes growth look fine
No reason kept for no digA decision not to dig is often one spreadsheet row

The Solution

Line up three runsWeld by weld, then feature by feature, with weak matches marked
Read the report's wordsSpeed, sensor and sizing caveats, tied to the rows each one touches
Check the tool against digsEach dig set beside the tool's call, carried forward to the dig date
An engineer decidesA dig or a recorded reason not to; the repair clock runs from discovery

Built-in controls

The manager countersigns only after opening the evidence
Pressure stays in the engineer's own tool
Safety questions go to a named person

What You Get

Engineers spend their time on the features whose reading changed, with each no-dig decision on record.

Tool checked against each digField measurements set beside what the tool called
Repair clocks from discoveryOpen features counted by section against the deadline
Evidence for not diggingFeatures kept in the ground, each with its own reason

One morning on one line

In-line inspection on a 30-inch gas line: one feature, from page 212 to a dig

The newest run's final report arrived four days ago. Overnight it was read page by page against the listing, and one passage changes how 37 features in a six-mile stretch should be read.

demoAll sample data: Line 12, its three runs, the vendor, the crews and each reading on these screens.

019:06
Page 212 says the tool ran too fast, and the listing has no column for it
Integrity engineer
The line opens as three runs stacked over one pipe, the same feature joined across them and each small line rising to the latest call. Between MP 58.02 and 64.15 the stretch is shaded. The note at the top says it touches 37 features at 20% or deeper, and 5 fall under the dig line at the wider bound. Section A has 19 days left.
029:06
Six caveats in 486 pages, touching 83 features and one gap
Integrity engineer
Speed, lost sensors, a slipped odometer, heavy wall at crossings, boxed clusters and near-weld lengths, each with its page. Page 212 opens with the vendor's own sentence highlighted: depth sizing in this interval is outside specification, plus or minus 20% of wall at 80% certainty, and field verification is recommended. The engineer reads the passage herself before trusting the count.
03Morning
Five of the 37 drop under the dig line once the bound is applied
Integrity engineer
The stretch holds 1,174 listed features, and these 37 are metal loss at 20% of wall or deeper, where a sizing error changes the response. Filtered to proposed digs, five rows remain, each with three runs' calls, growth a year, the bound at plus 20 and failure pressure at that bound, from 1,105 to 1,211 psig.
04Morning
26%, then 44%, and an older match too weak to use
Integrity engineer
MP 61.27 rises from 26% to 44% of wall, 3.13% a year. The oldest run's match is 81% sure, below the 85% line, so it is shown and kept out of the growth. The 18-point change is inside the two tools' combined error of about 22 points, and the screen says the listing alone cannot prove the rate. 525 welds after the valve tie the runs together.
05Morning
A dig 475 ft away measured 38% where the tool had called 24%
Integrity engineer
The dig sheet came back years ago and was never read against its neighbors. Carried forward at its own rate, 24% becomes 29.9% expected, so 38% is inside the combined tolerance and proves no tool error. It does show active corrosion under disbonded tape, as much as 3.7% of wall a year against 1.57% on that feature's calls.
06Morning
1,211 psig at the bound, under the 1,237 psig line
Integrity engineer
Failure pressure comes from the engineer's own calculation tool, in a batch she ran the day before. The agents prepare the inputs and read the results back. At the listing's call it is 1,322 psig, 1.49 times the maximum allowed. At the report's bound of 64% it is 1,211 psig, under the procedure's line for a dig within 12 months.
079:11
Moved to a dig on day 161 of 180, on a fact she picked
Integrity engineer
Decide stays locked until all three items are opened, and no reason comes preselected. She picks the fact the decision rests on, from this feature's own record: failure pressure at the bound is under the line. Discovery is recorded today, and the repair clock runs from it. On the listing alone this feature would have been monitored.
089:13
Countersign stays locked until he opens the same three items
Integrity manager
Her opening them does not count for him. He opens page 212, the dig sheet and the calc record himself, and only then can he countersign. The panel records both positions, the times and what each person opened. A delay in signing would not have moved discovery. The new dig falls due 365 days out, with its package still to build.
09Late morning
Seven digs come only from the report's words, and one is signed
Integrity manager
Filtered to the report, the dig list shows the signed dig at MP 61.27 and six still proposed, waiting for the engineer. Above them sits the one dig-now condition on the line: 941 psig at the call, under the 979 psig line, with Section B held at 680 psig and an owner named. Sample cost is $95,000 a dig.
10Afternoon
Count 525 girth welds from the valve, then 21.4 ft
Dig coordinator
The odometer is not trusted in this stretch, so the package for the field crew locates the feature by weld count from the mainline valve, then distance past the weld and clock position. It asks for a laser scan of depth and length, a coating record, and the sheet back within 30 days. Nothing goes in the ground before the excavation permit.

One in-line inspection feature, four pressures, and the line that moved it

The same feature read three ways, from the engineer's own calculation tool. Only the report's bound takes it under the line.

Depth used	Failure pressure	Against maximum allowed
Listing's call, 44%	1,322 psig	1.49 ×
Report's bound, 64%	1,211 psig	1.36 ×
At the next run, 59.7%, on the call	1,239 psig	1.39 ×
Procedure line, dig within 12 months	1,237 psig	Sample value

demoSample data, from the working solution. Procedure values are sample values; the operator loads its own.

2,946 features at 20% of wall or deeper, and where each one went

A response for each feature, by route. The monitored ones keep their own evidence.

Repaired after the preliminary report	8
Digs from the listing	41
Digs from the report's words	7
Monitored to the next run2,814 in six groups signed on a sample, 76 touched by a caveat and decided one by one	2,890
Features with a response	2,946

demoSample data, from the working solution.

The rest of the run

ILI run comparison, the tool check and the decisions not to dig

What the integrity manager, the vendor liaison and the compliance auditor open on this run.

Girth weld counts per run that add up, with pipe replacements and cutouts, and a queue of low-confidence matches — **Alignment**28,806, 28,798 and 28,790 girth welds, with the pipe changes that explain the difference. 32 matches below the 85% line wait for the engineer.

ILI tool validation against digs: measured depth against called depth with a tolerance band, and a verdict for each run — **Tool check**Each dig against the tool's call carried to the dig date. The newest run has 8 of the 15 comparisons the procedure asks for, so it stays not accepted.

Decisions not to dig in six groups with sample sizes and status, one group of 352 waiting for the manager, sign-offs stopped — **Decisions not to dig**Six groups, each signed only after a second person opens its random sample. Group sign-offs stop while the run's conditional acceptance is reopened.

A stretch where one sensor carrier recorded nothing, marked not inspected, with two options: a bell-hole check or a short re-run — **The sensor gap**One carrier of 12 recorded nothing for 0.58 mile at the bottom of the pipe. The only choices are a bell-hole or a short re-run, and neither clears it.

Vendor deliverable list with dates, a weld list held for duplicate numbers and replaced, and data checks on the listing — **Vendor files**Six of seven deliverables in. One weld list was held for 41 duplicate weld numbers and never loaded until the vendor sent a corrected file.

demoSample data, from the working solution.

The agents

Intake checker to dig sheet reader: who reads what on the run

Seven readers, and a named person owns what comes out of each. None of them picks a response.

Intake checker

Checks each vendor file against the deliverable list and the data checks.

Never edits vendor data
Holds a failed file

Run aligner

Aligns girth welds from fixed points, then features by distance and clock, with a confidence.

Never forces a match below the line

Report reader

Reads the final report, run logs and vendor answers page by page and lists the rows each caveat touches.

Never changes a call

Growth estimator

Works out depth change a year between matched runs and compares it with both tools' error.

Never sets a response

Tool validator

Sets each dig sheet beside the tool's call carried forward to the dig date.

Never signs a verdict

Response proposer

Applies the operator's procedure and prepares inputs for the engineer's calculation tool.

Never computes failure pressure
Never says a feature is safe

Dig sheet reader

Reads returned dig sheets and links each to its feature.

Counts nothing until a person enters the sheet

Listings, a long report and old dig sheets, read side by side

Read only. A value on screen cites the row, page or sheet it came from.

Feature listingsEach run's listing and girth weld list, from the vendor

Vendor reports and run logsThe preliminary and final reports, the velocity log and answers to questions

Document managementDig sheets from earlier digs

Pipeline mapValves and fixed points for weld counts

Maintenance systemReplacements, cutouts and valve settings since the last run

Integrity calculation toolFailure pressure, run by the engineer and read back

Operations data historianPressure held on a dig-now condition

What integrity engineers ask before trusting a reading of the vendor report

What is in-line inspection report review?

In-line inspection report review is the reading an integrity engineer owes each run: the listing against earlier runs, the tool against what digs measured, and the written report for anything it says only in words. Here agents do that reading and show the rows each caveat touches, and a named engineer decides each response.

How does ILI run comparison work across older runs?

Girth welds are aligned first, anchored on valves, tees and known pipe changes, then features by distance from the weld and clock position. Each match has a confidence. A match below the line is shown and kept out of growth until the engineer writes why it holds and the manager opens it and agrees.

Does it calculate failure pressure or corrosion growth rate?

Growth between matched runs is worked out and compared with the two tools' combined error, so a rate the listing cannot prove is marked as such. Failure pressure stays in the engineer's own calculation tool. The agents prepare its inputs and read the results back.

What happens to a feature we decide not to dig?

It keeps its own evidence: the call, the sizing, the growth, predicted depth at the next run and the pressure sentence. Large groups are signed by a second person only after each feature in a random sample has been opened, and rows outside the sample say they were not opened.

How are old dig sheets used for ILI tool validation against digs?

Each field measurement is set beside the tool's call carried forward to the dig date at that feature's rate, with the combined tolerance. The plot and the run verdicts follow from that, and a run waits for final acceptance until it has as many comparisons as the procedure asks.

Who can sign what?

The integrity engineer decides each feature and each dig. The integrity manager countersigns after opening the same evidence, and nobody checks their own decision. A dispute, or a decision that would drop a proposed dig, goes to the VP of pipeline integrity. The auditor reads and exports only.

Pipelines, Midstream & LNG

Bring one run's listing
and the report behind it.

We’ll show which rows your report's own pages change, against your older runs and dig sheets.

Book a demo Browse solutions

In-Line Inspection Report Review

The report says the tool ran too fast, and the listing never mentions it

The Problem Today

The Solution

What You Get

In-line inspection on a 30-inch gas line: one feature, from page 212 to a dig

Page 212 says the tool ran too fast, and the listing has no column for it

Six caveats in 486 pages, touching 83 features and one gap

Five of the 37 drop under the dig line once the bound is applied

26%, then 44%, and an older match too weak to use

A dig 475 ft away measured 38% where the tool had called 24%

1,211 psig at the bound, under the 1,237 psig line

Moved to a dig on day 161 of 180, on a fact she picked

Countersign stays locked until he opens the same three items

Seven digs come only from the report's words, and one is signed

Count 525 girth welds from the valve, then 21.4 ft