Following the topic, we would like to share you the quality document for small skid.

Inspection check list

Procedures and inspection should prepare and included in your hand, NDE procedure, NDE map, welding map and NDE plan also prepared.

You should make a content of procedures for control, type of inspection report, below is sample list of procedure.

Document control

Too many drawings/ document per each skid, so it should carefully update with latest revision,

Line list should be updated and control the piping spool number, all spools to be identified in the test package later.

Shop drawing, document submission to be documented revision number, date of submission, date of return, and approval code, etc.

Inspection report

To control and monitor all inspection reports, the assigned coding number should generate before starting issue.

Welding summary

For structural steel

For piping

Material receiving inspection

MRIR for piping, bolting, gasket, fitting

MRIR for consumable

MRIR for structural steel

MRIR for electric & instrument

Material traceability

Visual inspection

For piping

For structure

Dimensional inspection

Base frame – structure.

Piping spool, loose items.

Tie-in point report.

NDE Reports

MT/PT reports

RT/UT reports

Hardness test, ferrite test (if any)

Coating inspection report

Blasting and painting inspection report

Pickling and passivation report

Holiday test, salt test, dust test, pull of test (if any)

Testing report

Hydrotest & Pneumatic test

See hydrotest & pneumatic test procedure, prepare the test package, and update the test package, here.


Factory acceptance test

Tie-in point report.

Bolt tightening report.

Leak test for instrument air.

Leak test for pipe system.

Function test for valve, equipment.

Packing report

Important do not miss during inspection: to check all the packing list, listed out all items installed or mounting on skids, spare part items, loose items, location of packing items, protection, preservation, etc.

Record all packing and photos evident should be kept.

To make sure all package had been checked and verified by all parties, and signed off in the packing list before moving next stage of the issue “IRN – Inspection Release Note”.

Inspection release note

The IRN will be issued by Client or their representative inspector will issue it because the inspection point is Hold Point.

This is an evident document for payment and confirmation that had been inspection before shipping.


Final Manufacturer data book

Collect all procedure, instruction used for fabrication and inspection record to the final MDR.

MDR Index / content will be confirmed with Client before making.

Construction drawings will be made an as-built for reviewing and approval.

All outstanding work list should close out or update in the master list for further actions.

Guide to make a sample MDR, here.

Storage and submission

Retention of document shall follow your quality system, such 3 years or 5 years.

Document submit eight hard copy or soft copy or both to your client.

Do not submit via email with many files attached in the email, it should combine into a “.ZIP” folder, not compressed “.RAR” file.

Submission should use a secured platform such Google One, SharePoint, WeTransfer.


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Disclaimer: is based on information from multiple sources and our experience with welding and inspection scopes. It is not a replacement for manufacturers directions and is only to provide reminders for inspector.

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