Reference
PlateLabs Learn — ASME & NBIC Nameplate Reference
Reference articles on ASME Section VIII Division 1 and NBIC nameplate marking — UG-116, UG-118, UG-119, code symbol stamps, RT/HT/PHT designators, and replacement procedures.
Pillar
ASME Section VIII Division 1 Nameplate Requirements: The Definitive Guide
Complete reference for ASME Section VIII Division 1 nameplate marking — UG-116 required content, UG-118 character heights, UG-119 nameplate construction, code symbol stamps, RT/HT/PHT/L/WL designators, and NBIC NB-136 replacement procedure.
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UG-116 Required Marking Checklist for ASME Section VIII Vessels
Complete UG-116 marking checklist — every required field on an ASME Section VIII Division 1 nameplate, in order, with what each line means.
UG-118 Character Heights and Nameplate Marking Requirements
UG-118 reference — minimum character heights, stamping vs engraving, low-stress stamps, and acceptable marking methods for ASME VIII-1 nameplates.
U, UM, U2, U3 Stamp Designators Explained
Reference for the U, UM, U2, and U3 ASME code symbol stamps — what each authorizes, how they appear on the nameplate, and when each is required.
RT-1, RT-2, RT-3, RT-4: Radiography Stamps on ASME Nameplates
Reference for the four ASME radiography designators — what each indicates, when it is required, and how it changes the joint efficiency used in vessel design.
Post-Weld Heat Treatment Marking: HT vs PHT
When and how to mark HT and PHT designators on an ASME Section VIII Division 1 nameplate.
The "L" Designator: Marking Vessels in Lethal Service
When the ASME VIII-1 lethal service designator is required, what it triggers in design and inspection, and how it appears on the nameplate.
"WL" Marking for Welded Layer Construction
When the WL designator is required on an ASME VIII-1 nameplate and what welded layer construction means for inspection.
Replacing a Missing or Illegible ASME Nameplate (NBIC NB-136)
Step-by-step procedure for replacing a missing or illegible ASME Section VIII-1 nameplate using NBIC NB-136 nameplate replacement form.