Vacuum Systems Consensus Guideline for Department of Energy Accelerator Laboratories Page: 8 of 14
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Vacuum Guideline Final - 919/08
his/her ability to solve or resolve problems relating to the system under review in terms of its
nature, complexity, and criticality. Approval from the facility authority having jurisdiction is
required if the individual does not meet at least one of the following criteria:
(1) Completion of an engineering Bachelor of Science or similar degree, requiring 4 or more
years of full-time study, plus a minimum of 5 years of experience in the design of related
(2) Professional engineering registration recognized by the local jurisdiction, plus
experience in the design of related vacuum/pressure systems
(3) Completion of an Associate of Engineering degree, requiring at least 2 years of full-time
study, plus a minimum of 10 years of experience in the design of related
(4) Fifteen years of experience in the design of related vacuum/pressure systems, which is
satisfied by experience that includes vacuum/pressure system design calculations and
equipment and material selection.
These qualification requirements also apply to any individual serving in the role of an
independent design professional responsible for conducting a review.
Pressure Safety Committee (PSC)
Members of the PSC are appointed by the laboratory director or delegate and should be
experienced and knowledgeable in the design and operation of vacuum/pressure systems.
Technical competence for each member should be evidenced by 15 years of employment as a
safety professional, physicist, or engineer. A Bachelor of Science degree or higher is
recommended. Individual members are not expected to be expert in all topic areas, but the
committee as a whole should possess the capability to evaluate all of the topics in Appendix B
of this guideline. At least one member of the PSC should possess the qualifications identified for
the responsible vacuum system design engineer.
The application of sound engineering principles and practices are expected in the design and
operation of all vacuum systems. All vacuum vessels shall be designed to ensure that allowable
stresses are not exceeded and to ensure that the vessel is stable (resistant to buckling). The
design should be documented in the engineering evaluation as described in Appendix A. All
issues regarding interpretation of these requirements should be referred to the authority having
jurisdiction by the responsible manager.
Category I and 11 Vacuum Systems
Vacuum vessels in these categories are not required to be stamped with ASME Code Symbol
Stamp. For vacuum systems in Categories I and II, the allowable compressive stresses should
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Casey,R.; Haas, E.; Hseuh, H-C.; Kane, S.; Lessard, E.; Sharma, S. et al. Vacuum Systems Consensus Guideline for Department of Energy Accelerator Laboratories, report, September 9, 2008; United States. (https://digital.library.unt.edu/ark:/67531/metadc901857/m1/8/: accessed May 21, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.