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National board number pressure vessel
National board number pressure vessel













J) New requirements and guidelines for the installation of boiler flues (S1.2.9.6). New requirements allowing for R-certificate holders to maintain their R-form logs using only the National Board electric data transfer (EDT) system (5.6). I) New instructions and guidelines for the R-1, R-2, R-3, and R-4 repair forms. This change applies to ASME Section VIII, Div. H) New requirements that allow for the engineer review and certification process for alteration plans to be waived (3.4.5.1 a). G) A new Section 3.3.6 for pressure vessel impact testing. 3 vessels (3.3.2 a).į) New requirements for flush patches in tubesheets (3.3.4.6 a). PART 3 - Information and guidance to perform, verify, and document acceptable repairs or alterations to pressure-retaining items.Ī) R-Forms and directions for completing them have been moved to a new Supplement 9.ī) Revised language to clarify quality assurance program requirements under “Prerequisites For Issuing a National Board ‘NR’ Certificate of Authorization” (1.6.3 a and b).Ĭ) Several revisions to Table 2.3 show the most recent edition of “Standard Welding Procedure Specifications.” New language is included in Section 2.3 c) to allow the use of previous versions of the standard welding procedure specifications (SWPSs) listed in Table 2.3.ĭ) A new section detailing requirements on Welding Method 7 (2.5.3.7).Į) New language specifying that routine repairs are not permitted for American Society of Mechanical Engineers (ASME) Section VIII, Div. The world of remote visual inspection has totally changed inspection with the use of remote-controlled drones and allowed for inspections without potential risk of injury to the inspector, making the job considerably easier. I) Revised carbon dioxide gas detection system requirements for liquid carbon dioxide storage vessels (S12.5). G) New “Maximum Allowable Working Pressure For Cylindrical Components” requirements for return flue boilers (S2.10.3.1). PART 2 - Information and guidance needed to perform and document inspections.Ī) New requirements for remote visual inspection for “Personal Safety Requirements For Entering Confined Spaces” (1.4.1 c and 4.2.1 c).ī) Several revisions/updates to the inspection requirements for “Pressure Vessels For Human Occupancy” (2.3.6.8).Ĭ) New inspection requirements to ensure all shipping caps, plugs, covers, wires, and/or restraining devices were removed during the installation process via “Inservice Inspection Requirements For Pressure Relief Device Installation Condition” (2.5.4 a and Part 4, 3.2.3 a).ĭ) “Recommended Inspection and Test Frequencies For Pressure Vessels” (2.5.8) has been restructured into a tabular format.Į) New instruction for “Replacement of Stamping or Nameplate” (5.2) and Form NB-136.į) New requirements to allow for long, nondestructive examination (NDE) cycles for historical boilers (S2.7.3.2 c). Texas has required CO monitoring in boiler rooms, and we may see more of this local action. While CO is a serious issue, it is a not strictly a pressure vessel issue and not easily resolved. The CO issue has been difficult for this group, with strong opinions on both sides. H) Supplement 9 generated for “High-Temperature Water Boilers.”

national board number pressure vessel national board number pressure vessel national board number pressure vessel national board number pressure vessel

G) Supplement 8 generated for “Installation of Pressure Vessels for Human Occupancy.” D) “Pressure Relief Valve Discharge Piping” added new rating requirements (3.9.1.5 c, d, and e).Į) “Liquid Carbon Dioxide Storage Vessels” have revised carbon dioxide gas detection system requirements (S3.4).į) “Thermal Process Heaters” have updated overpressure protection requirements (S5.7).















National board number pressure vessel