API 510 Preparatory Course

Lesson 10Materials, Name Plates, and Data Reports

UG-77 Material IdentificationPage 67 Section VIIIThe material for pressure parts must be handled in a particular way per the Code. For instance, the Code specifies that materials for parts of a vessel should be laid out and marked in such a way as to easily maintain traceability after the vessel is completed.Several techniques for identification markings are allowed and are described in this paragraph. Stamping is the preferred method of marking vessel parts; however, as built drawings and tabulation sheets are also acceptable. The manufacturer must maintain trace ability to the original markings.

UG-77 Material IdentificationOverviewFor instance, when cutting parts for the vessel from plate the heat number stamped on the piece of plate should be transferred prior to cutting the plate. They may be transferred immediately after cutting if a provision for control of such transfers has been made in the Manufacturer's Quality Control System. If a particular material should not be die stamped, plates must be made and attached with the required markings. A record of these markings must be maintained which will allow positive identification of the vessel parts after construction.

The part manufacturer can use only materials allowed by the Code.

UG-77 Material IdentificationOverviewIf a Code vessel manufacturer buys parts that are formed, such as heads, from another, the manufacturer of the head shall transfer the markings as applies to the material specification that the part is made from.

In addition, the part Manufacturer must supply a Partial Data Report. A Manufacturer's Partial Data Report is not required if the part was formed or forged, etc., without the use of welding. The markings of the Part Manufacturer must be present on the part.

UG-93 Inspection of Materials Page 78 Section VIIIThe highlights of this paragraph are as follows:

1. Plate is the only pressure vessel material that must always have a Mill Test Report (MTR) or Certificate of Compliance (C of C) provided. The inspector shall examine these documents for compliance to the material specification.2. All other product forms must be marked in accordance with their material specification. For example, pipe marked SA-106 gr. B.3. All materials to be used in a vessel must be inspected before fabrication to find as best as is possible defects, which would affect the safety of the vessel. The following describes the inspections required.

UG-93 Inspection of Materials

a. Cut edges of and parts made from rolled plate for serious laminations, shearing cracks, etc.

b. Materials, which will be impact tested, must be examined for surface cracks.

c. When forming a Category C corner joint as shown in fig. UW 13.2 with flat plate thicker than 1/2 in., the flat plate must be examined before welding by magnetic particle or dye penetrant nondestructive examination.

d. The inspector must assure himself that thickness and other dimensions of the material comply with the requirements of this Division.

e. The inspector must verify welded repairs to defects.

UG-93 Inspection of Materials

f. The inspector must verify that all required tests have been performed and are acceptable (impact tests, NDE etc.).

g. The inspector must confirm material I.D.'s have been properly transferred.

h. The inspector must confirm that there are no dimensional or material defects, perform internal and external inspections and witness pressure tests.

UG-116 Required MarkingPage 87 Section VIIIThe marking applied to a vessel's nameplate or directly to its shell are described in this paragraph. It is important information. Often a vessel's Data Report is lost and the only information that is available is that found on the Name Plate or the shell itself. In some cases the Name Plate is missing or sand blasted and not readable. The following is a listing of what is required by the Code to be present on the Name Plate.

UG-116 Required Marking1. The official Code U or UM symbol. If inspected by the Owner/User of the vessel the word USER shall be marked on the vessel.2. Name of the manufacturer preceded by the words "Certified by".3. Maximum allowable working pressure ____psi at __F.4. Minimum design metal temperature __F at ____psi.5. Manufacturer's serial number.6. Year built.7. The type of construction used for the vessel must be marked directly under the Code symbol by the use of the appropriate letter as listed in the Code.

UG-116 Required MarkingCODE SYMBOLCertified by Johns Trailer and Vessel

U350 psi at 300 oFWMAWP HTRT 1-20 oF @ 200 psiLMDMT

S/N 0000001

Year 1994

UG-116 Required Marking8. If a vessel is built using more than one type of construction all shall be indicated.9.If a vessel is in a special service the lettering as shown below must be applied.a. Lethal ServiceLb. Unfired Steam BoilerUBc. Direct FiringDF10. The MAWP must be based on the most restrictive part of the vessel.11. When a complete vessel or parts of a vessel of welded construction have been radiographed in accordance with UW-11, the marking must be as follows:

UG-116 Required Marking

a. "RT 1" when all pressure retaining butt welds, other than B and C associated with nozzles and comm. chambers that neither exceed NPS 10 nor 1-1/8 inch thickness have been radiographically examined for their full length in a manner prescribed in UW 51, full radiography of the above exempted Category B and C butt welds if performed, may be recorded...b. "RT 2" Complete vessel satisfies UW-11(a)(5) and UW- 11(a)(5)(b) has been applied.c. "RT 3" Complete vessel satisfies spot radiography of UW-11(b).d. "RT 4" When only part of the vessel satisfies any of the above.

UG-116 Required Marking12. The letters HT must be used when the entire vessel has been Postweld heat treated.13. The letter PHT when only part of the vessel has received partial Postweld heat treatment.14. Code symbol must be applied after hydro or pneumatic test.15. Parts of vessels for which Partial Data Report are required shall be marked by the parts manufacturer with the following:a. "PART" b. Name of the Manufacturerc. The manufacturer's serial number.

UG-119 NameplatesPage 91 Section VIIIIn this paragraph are the details of nameplates, including such things as the size and methods of markings allowed. The nameplate must be located within 30 in. of the vessel and must be thick enough to resist distortion when stamping is applied. The types of acceptable attachment types include welding, brazing, and tamper resistant mechanical fasteners of metal construction. Adhesive attachments may be used if the provisions of Appendix 18 are met. An additional nameplate may be used if it is marked with the words "DUPLICATE". On previous tests some questions have come from this paragraph.

UG-120 Data ReportsPage 92Data Reports must prepared on form U-1 or U-1A for all vessels that the Code Symbol will be applied to. The Manufacturer and the Inspector must sign them. A single Data Report may represent all vessel made in the same day production run if they meet all of the requirements listed in UG-120.

A copy of the Manufacturer's Data Report must be furnished to the User and upon request the Inspector. The manufacturer must either keep a copy of the Data Report on file for 5 years or register the vessel and file the Data Report with the National Board of Boiler and Pressure Vessel Inspectors.

The End