Silencer Inspection and Test Plan

This Article provides you with a sample Silencer inspection and test plan. This is a draft silencer ITP and must be edited based on your purchase order specifications. You may also review pressure vessel ITP article for more detail information. You can download draft ITP there and adjust with this one to generate your own silencer ITP.

Silencer Inspection and Test Plan TaskVendorTPI InspectionClient
Silencer Mill test reports including impact test and non-destructive test, when specifiedHRR
Silencer Material identification and markingsHW/RR
Silencer WPS/PQR, Welders qualifications (records or welder's list)HRR
Silencer Weld preparation and fit-up, back chip inspectionHSR
Silencer Execution of major repairs, when issued NCRHHR
Silencer Visual and dimensional inspection prior to heat treatment, when applicableHWR
Silencer Visual and dimensional inspection prior to heat treatment, when applicableHSR
Silencer Ferrite check for weld, when specifiedHSR
Silencer Non-destructive testing (RT, UT, MT, PT when applicable)HSR
Silencer Review of radiographs, when applicableHSR
Silencer Production weld test, when requiredHSR
Silencer Hardness measurements in final condition, when specifiedHSR
Silencer Visual and dimensional inspection during fabricationHWR
Silencer Reinforcing pad air-soap testHSR
Silencer Leak test for sleeve type nozzle, when applicableHSR
Silencer Installation of internals, when applicableHWR
Silencer Other Job Requirement Inspection Record (when specified)HWR
Silencer Surface preparation prior to painting, coating, liningHSR
Silencer Complete draining and nitrogen filling or desiccant or volatile corrosion inhibitor treatment checkHWR
Silencer Final visual inspection (including Painting (color & thickness), coating, preservation, lining, picking, nameplate, tagging, marking, and Aux items like spare parts, bolts, etc.)HHR
Silencer Documentation review prior to release at local shop(Final activity of Technical Inspection)HHR
Silencer Pre-shipment InspectionHHR

Silencer Inspection and Test Plan Points

H: Hold Point implies that relevant production activities shall not proceed until the continuation of work is permitted by Purchaser. (Notification req'd)

W: Witness point implies that Purchaser intends to witness the designated inspection feature. If Purchaser decides not to witness the relevant feature, production can proceed without permission of Purchaser. (Notification req'd)

S: Witness, but spot check basis. Initial operation will be witness point and subsequent operation will be witnessed at discretion of Purchaser considering the results of previous inspection. (Random Inspection : Notification not req'd)

R: Review inspection & test records (Notification not req'd)

General Note for Silencer ITP :

1) Silencer Witness/hold point by Code Inspector, when applied by Code Stamp/Local Regulation, is to comply with its requirements and to specify in Vendor's ITP.

2) Type of Inspection by Silencer Purchaser may be changed according to equipment criticality and vendor QC evaluation at job stage.

3) When requested in the requisition, detailed Silencer ITP shall be submitted by Vendor.

4) Monitoring/Observation of Silencer Vendor shop daily routine works (i.e. Storage of materials & welding consumables, Adherence to approved procedures, Testing tool calibration check, Welder/NDE Operator performance & qualification, workmanship, cleanliness and etc.) shall be done by Purchaser during inspection visit.

5) Silencer Final Visual Inspection/Documentation Review/Pre-Shipment Inspection may be combined within one time visit.


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