23 July 2003
Overhaul. All unmanned pressure test facilities should
be overhauled, as described below. The length of time between
overhauls of a particular facility should be determined by the
activity, sponsor and SCA, but should not exceed 10 years.
Should a facility be taken out of service (mothballed) for more
than two years, an overhaul should be conducted prior to placing
the facility back in service.
The overhaul of unmanned pressure test facilities should be
accomplished in three phases as follows:
a) A pre-overhaul test and inspection of existing
systems and components must be performed to determine the
condition of the facility.
b) All systems and components that do not perform to
specifications must be repaired or replaced to bring the facility
c) The facility should undergo final system functional
testing to verify the acceptability of the work performed.
by a SCA representative and should include all systems of the
The level of overhaul accomplished should be based on the
criticality of the respective system.
Hazard Categories. All systems, equipment, components
and procedures should be evaluated and assigned a hazard category
(HAZCAT) as defined in Section 2. The HAZCAT is based upon the
potential hazard to operators or other personnel involved in the
test evolution, as well as systems associated with the loss of
It is emphasized that the facility operators and test support
personnel are the individuals to whom this HAZCAT analysis
program is directed.
HAZCAT I Systems. All components that are a part of a
HAZCAT I system should be evaluated and refurbished to the "as
new" condition. The "as new" condition of a component is that
condition which was acceptable in the original design, and/or
meets the quality control requirements of the Commercial or
Military Specification for that component. The "as new"
condition includes, but is not limited to, the following:
complete internal/external visual inspection
replacement of all software