UFC 4-390-01
23 July 2003
Table 2
Pressurization Media
< 15 psig
15 to 150
> 150 to
> 600 psig
psig
600 psig
Pressure
Not
Class C
Class B
Class B
Media
Required
Liquid
Pressure
Not
Class B
Class A
Class A
Media Gas
Required
Pressure
Class A
Class A
Class A
Class A
Media
Hazardous(1)
(Gas or
Liquid)
1
Hazardous Media is defined as any gas or liquid that is
flammable, toxic, or poisonous
1.5.1
New System. For a new system design, the applicant
should present OQE documenting the above areas to the SCA during
one or more formal design/construction reviews as appropriate.
Preparation and presentation of this OQE must be specifically
required by the terms of the contract or specifications and is
the responsibility of the applicant. For a newly fabricated
system which is an exact duplicate (e.g., design, material, depth
limits, temperature, environment, etc.,) of a certified system,
on-site surveys of the configuration, quality control, testing
records, previous certification documents, and a demonstration of
the system may provide sufficient OQE.
Existing System. For a system already in existence and
1.5.2
possibly in service, the assembly of sufficient OQE might require
considerable effort. If OQE is not retrievable, the information
may have to be recreated. To recreate OQE, the applicant may have
to resort to nondestructive and/or destructive testing,
inspection, and design review analysis. The applicant should
consult with the SCA for direction as to the required OQE
necessary to certify the existing facility based on its intended
use.
The criteria required by this document will not necessarily cause
the system certification of current tenure to be suspended or
terminated prior to normal expiration. However, all
recertifications and continuances should be judged using the
criteria established by this document.
It must be recognized that new information that may become
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