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Method Statement for Hot Tapping Tie-In Connections on Live Pressurized Chilled Water (CHW) Piping inspection and test plan example.

Inspection and Test Plan for Method Statement for Hot Tapping Tie-In Connections on Live Pressurized Chilled Water (CHW) Piping

AI-assisted inspection and test plan connected to a method statement, with PDF and Excel export.

Published 09 Sep 2026 Rev. 00 3 views
About this ITP: This ITP defines hold/witness points and acceptance criteria for hot tapping on live CHW networks, ensuring code-compliant welding, NDT, valve verification, and safe tapping operations.

More than a static template

Unlike a downloadable Word or PDF template, this ITP is an AI-assisted editable starting point directly connected to its method statement. Every inspection activity, hold point, and acceptance criterion is structured and ready to adapt to your project.

  • AI-assisted customization — Tailor inspection activities and acceptance criteria to your specific project scope.
  • Linked method statement — This ITP is connected to the corresponding method statement describing the work sequence.
  • Multiple export formats — Download as a formatted PDF or editable Excel spreadsheet.
  • Editable starting point, not a final document — Review and verify all content against your project specifications and standards before use.

What you can customize

When you save this ITP to your account, every inspection row becomes editable. You can add, remove, or modify:

  • Inspection activity — Description of what is being inspected.
  • Inspection type — Hold point (H), Witness point (W), Review (R), or Monitor (M).
  • Responsibility — Contractor, subcontractor, engineer, or client.
  • Frequency — How often the inspection occurs.
  • Acceptance criteria — Referenced standard or specification requirement.
  • Records — Forms, test reports, or checklists required as evidence.

Why this ITP is used

To verify that all stages of a live hot tap—design, welding, NDT, valve installation, cutting, and leak checks—meet code and project requirements.

Who uses this inspection and test plan

QA/QC engineers, hot tapping specialists, welding engineers, site supervisors, and Client/Engineer representatives.

When this ITP is prepared and submitted

Applied from pre-fabrication through post-tap commissioning and documentation handover.

Who receives or approves this ITP

Client/Engineer for review and acceptance before commencement of works.

Inspection scope

Material traceability, welder/WPS qualifications, fit-up, NDT, valve testing, hot tapping operation, leakage tests, and documentation closeout.

Typical hold, witness, and review points

Fit-up (H), tell-tale leak test (H), hot tapping operation (W), branch pressure test (H), final handover (W).

Typical inspection records

MTCs, WPS/PQR/WPQ, UTM reports, NDT reports, torque logs, valve/API 598 certs, pressure test certs, tapping log, coupon custody, calibration certs.

Important approval note

This ITP is an AI-assisted editable starting point, not a pre-approved document. Before use on any project, all inspection activities, hold points, and acceptance criteria must be reviewed and approved by the relevant parties (superintendent, principal contractor, or client representative) in accordance with your contract and project quality plan.

Always verify acceptance criteria against your applicable drawings, specifications, and regulatory requirements. Hold points must be confirmed with the relevant authority before work proceeds past that point.

Inspection and test plan

Activity Inspection / Test Acceptance Criteria Responsibility Record
Design and feasibility review Check d/D, t_rem, reinforcement calcs per ASME B31.3/PCC-2 Calculations approved; limits within code/company standards [Verify] Welding Engineer / Client Rep (W) Approved calc package
Material verification Review MTCs/heat numbers for tee, branch, flanges, bolts Materials match specifications/drawings QA/QC Engineer MTCs; material log
WPS/PQR and welder qualifications Verify ASME IX qualifications WPS/PQR approved; welders qualified for position/process QA/QC Engineer WPS/PQR; WPQ certs
Pre-tap UTM thickness mapping UTM per ASME V t_measured ≥ t_required [Verify] NDT Technician / Engineer (W) UTM report
Fit-up inspection (tee/saddle) Check gaps, alignment, cleanliness Gap ≤ 3 mm; alignment within tolerances; vent holes open QA/QC Engineer (H) Fit-up report
Welding parameters and preheat Monitor temps and amps/volts Within WPS limits Welding Engineer / QA Weld log; temp record
NDT on attachment welds VT 100%; PT/MT 100%; UT/PAUT if applicable Per ASME B31.3/ISO acceptance levels NDT Level II / Engineer (W) NDT reports
Tell-tale pneumatic leak test Air 1.0–1.5 bar; soap test 10 min No bubbles/leakage QA/QC (H) Leak test cert
Valve verification API 598 seat/body test; class check Pass API 598; class matches design QA/QC Engineer Valve test certs
Flange make-up/torque Torque wrench readings; bolt pattern Torque within spec; uniform gasket compression Supervisor / QA Torque log
Hot tapping operation Operational log; pressure/temp monitoring; coupon capture No leakage; coupon retrieved; clean cut Hot Tapping Specialist / Engineer (W) Tapping log; coupon custody record
Post-tap leak check Soap solution on all joints under pressure No bubble formation QA/QC / Operator Leak check sheet
Branch pressure test (where applicable) Hydro 1.5× design (off-line) or alternative per spec No leakage/pressure loss QA/QC (H) Pressure test cert
Flushing/cleanliness verification Visual/turbidity of discharge No visible particulates in two successive checks Supervisor / O&M Flushing record
Final documentation and handover Dossier review against ITP All records complete and approved QA/QC Engineer / Client (W) Handover dossier

This table is a read-only public reference. Download the PDF or Excel version, or customize this ITP to edit it for your project.

Frequently asked questions

Typical holds include tee fit-up, tell-tale pneumatic test, and branch pressure test. The hot tapping operation is usually a witnessed point by the Engineer.

By applicable codes (ASME B31.3/B31.9, PCC-2), project specifications, and OEM instructions. Specific numeric values must be verified per project documents.

PT or MT may be selected based on material and site conditions, provided the chosen method meets the project specification and applicable standards.

Related method statement

This Inspection and Test Plan is associated with the Method Statement for Hot Tapping Tie-In Connections on Live Pressurized Chilled Water (CHW) Piping method statement, which describes the step-by-step construction sequence, resources, materials, equipment, safety controls, and environmental controls for this activity.

View the Method Statement for Hot Tapping Tie-In Connections on Live Pressurized Chilled Water (CHW) Piping method statement →

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