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Thomas Jefferson National Accelerator Facility

EH&S Manual6151-T1 Vessel Design Documentation

6151T1VesselDesign.fm rev. October 18, 2005 6151-T1 of 3

6151-T1

Appendix 6151-T1Vessel Design Documentation

This appendix provides guidance for pressure vessel design documentation. Codestamped vessels will have vessel design documentation provided by themanufacturer.

Vessel design documentation is required for all pressure vessels built on site and forall Code stamped pressure vessels that are modified without the NationalBoard repair stamp. It should consist of two parts: the first, a narrative thatdescribes the vessel, any special hazards and how they are mitigated. Thesecond part should list the design data (which may be substituted by standardengineering data which meets the intent of the Code’s manufacturer’s datareport).

Vessel Design Documentation is written by the lead engineer, and is technicallyvalidated by a peer mechanical engineer before being approved by linemanagement.

A copy of the documentation must be kept on file for each Division. A copy mustalso be kept on file with the Maintenance Services Manager in FacilitiesManagement.

The pressure vessel test record may be used as the design documentation, providedthat it contains the required information set forth in this appendix, in additionto the requirements of Appendix 6151-T3 Pressure Vessel Testing Procedure.

http://6151t3pvtesting.pdf/

http://6151t3pvtesting.pdf/





6151-T1 of 3 rev. October 18, 2005 6151T1VesselDesign.fm

Description and Special Hazards

Principal User

Location of Vessel

Type of Installation (horizontal, vertical, sphere)

Date of Installation

Description and intended use

non Code vessels: describe why the vessel cannot meet code

Stored energy (under normal working conditions)

Vessel capacity

Vessel Approvals (DOT, ASME)

Drawing Number(s)

Serial Number

ASME Code edition used for construction

Special Hazards or Services (low temperature, lethal service, brittle component such as thin window)

List of controls that will lessen the special hazards

Calculations• Safety factor• MAWP• Stresses• Proposed safety barricades

Labels• Pressure test• Nameplate

Vessel Contents

Date information last reviewed

Peer Review sign off (for non-code vessels)





6151T1VesselDesign.fm rev. October 18, 2005 6151-T1 of 3

Design Data

Vessel Design DataNote: The data collection here may not be applicable to all vessels. Refer to the ASME Code non-mandatory

Appendix W for the full range of data that should be documented in the design data section.

Shell• Number of courses or sections between heads required to make one shell• Length of shell• Length of each course in shell• Other shell dimension (specify diameter or width and height)• Materials• Shell Thickness• Corrosion allowance

Head• Head thickness• Head radius• Weld descriptions

Jacket• Type of jacket• Jacket closures

Calculations/testing• Calculations for MAWP• Maximum temperature permitted at MAWP• Maximum and/or minimum design metal temperature• Impact testing• Pressure test

Openings• List of all nozzles and other openings• Sizes of all nozzles and openings

Supports

• Material used for reinforcement material• Weld QA• Description of support: type, location and method of attachment

Welding Procedures (attachment)

Welding Procedure Qualifications (if necessary)

Welder Qualifications (attachment)

Material Certificates

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