Creating Inspection and Test Plans (ITPs)

Creating Inspection and Test Plans (ITPs)

Quick Answer: An inspection and test plan (ITP)—also called an inspection plan or test plan—is the living matrix that tells the project what to inspect, to which standard/spec, what passes, who must be present, and which record is filed. CIP Level 2 creates or reviews ITPs; CIP Level 1 mainly executes the hold and witness points already written into the approved plan.

Inspection Plan, Test Plan, and ITP Terminology

On the CIP Level 2 exam and in industry practice you will see three near-synonyms:

• Inspection plan — emphasizes when and how visual and instrumental inspections occur
• Test plan — emphasizes quantitative tests (DFT, adhesion, holiday, soluble salts, cure)
• Inspection and test plan (ITP) — the combined document used on most industrial coating projects

Treat them as the same deliverable unless a client procedure splits “inspection” from “laboratory testing.” What matters is content: a sequenced list of quality activities with acceptance criteria and sign-off authority. If a bid package says “submit ITP for approval 14 days before mobilization,” that is your inspection plan / test plan package—not a verbal agreement at the gate.

Structure of an ITP

A usable ITP is a table (often with a cover sheet for revision control). Minimum columns:

Optional but valuable columns: equipment list (gauge models), calibration reference, environmental limits, and cross-references to method statements. Every row should stand alone: a new Level 1 inspector should be able to execute the row without guessing.

Cover Sheet and Revision Control

The ITP is a controlled document. The cover sheet typically lists project name, coating systems, revision number and date, approvers (contractor QC, owner QA, inspector), and a revision history. Field copies must match the approved revision. Handwritten “temporary” hold-point deletions on a printout are not a valid ITP change—those require a formal revision or a written client directive linked to the revision log.

Hold Points vs Witness Points vs Review Points

These three inspection-point types are core Level 2 vocabulary:

Hold points protect the owner from irreversible progress over a defective condition. Witness points balance oversight with schedule when presence is valuable but absence after notice should not freeze the job. Review points catch paperwork and certification gaps without standing on the scaffold for every record. Mislabeling a true hold as a witness is a common contractor pressure tactic; Level 2 inspectors defend the classification based on consequence of failure, not schedule convenience.

Some owners add surveillance (random observation without formal notification). If used, define it in the ITP so “we thought you would just show up” is not the notification system.

Sequencing: Prep → Application → Cure → Final

A coherent inspection plan follows the physical work flow. Do not cluster all testing at the end.

1. Surface Preparation Phase

Typical ITP activities:

• Pre-blast condition and grease/oil removal verification
• Abrasive cleanliness / chloride on media when specified
• Ambient and substrate checks before blast (when required)
• Cleanliness grade vs specified SP/ISO grade (hold)
• Profile measurement per ASTM D4417 or project method (hold or witness)
• Soluble salt / dust / water-break tests as specified (often hold on immersion steel)

2. Application Phase

• Material identity, batch numbers, mix ratio, induction and pot life
• Stripe coat verification on welds and edges
• Ambient conditions and dew-point margin during spray
• Wet-film thickness checks during application
• Intercoat cleanliness and recoat-window compliance before next coat
• Dry-film thickness per SSPC-PA 2 or project sampling plan after each coat or as specified

3. Cure Phase

• Cure schedule vs PDS temperature/time tables
• Hardness, MEK rub, or other cure tests when specified
• Recoat or service-entry restrictions

4. Final Inspection and Acceptance

• Final DFT survey and visual defect survey
• Holiday/discontinuity testing where required (often hold for linings)
• Adhesion testing sample plan when specified (destructive—plan locations)
• Punch list, NCR closeout, and final acceptance package

If the ITP jumps from “blast” to “final DFT” with no ambient, WFT, or intercoat rows, it is incomplete—even if the cover looks professional.

Example ITP Excerpt (Immersion Tank Lining)

Use project-specific numbers from the actual specification—never invent acceptance criteria that contradict the client’s documents. The table above is a teaching skeleton, not a universal tank standard.

CIP Level 2 Role: Build and Review, Not Only Execute

Level 2 review questions to ask of any proposed ITP:

1. Does every irreversible step have an appropriate hold or strong witness?
2. Are acceptance criteria measurable and tied to a standard/spec/PDS?
3. Is sequencing logical through prep → application → cure → final?
4. Are records named so the final dossier can be assembled without hunting?
5. Are responsibilities realistic (who actually has the instrument and authority)?
6. Do immersion, buried, or high-criticality areas get denser testing than mild atmospheric steel?

If the answer to any of these is no, Level 2 documents the gap and proposes a revision before production—not after a failure.

Practical Tips for Creating ITPs

• Start from the coating system schedule and walk the process in time order.
• Pull test methods from the project specification first; use PDS limits where the spec points to the manufacturer.
• Align DFT rules with SSPC-PA 2 (or the project’s stated alternative) so sampling is not improvised.
• Pair each instrumented test with a calibration review point so gauges are defensible.
• Keep language objective: “Verify DFT per SSPC-PA 2,” not “Ensure good thickness.”
• After owner approval, train Level 1 staff on the live revision and place controlled copies at the job shack.

A strong ITP is the difference between inspection as a random presence and inspection as a planned quality system. CIP Level 2 owns that planning skill.