UFC 4-390-01
23 July 2003
APPENDIX C
REQUIRED DOCUMENTATION
C.1
MAINTENANCE AND REPAIRS
Work within the Scope of Certification (SOC) must be done in a
controlled fashion to ensure certification is not voided. All
work within the SOC on class-A chambers, should either be done in
accordance with a controlled work procedure (CWP) or a re-entry
control (REC) package. For Class-B and Class-C chambers, a
maintenance log sheet should be filled out for all work within
the Scope of Certification. An example of a Maintenance Log
Outline Sheet is provided as Figure C.1.
C.1.1 Controlled Work Procedure (CWP). Work that is of a
repetitive nature such as maintenance, equipment set-ups and
alterations in support of testing may be accomplished using a
CWP. All controlled work procedures should state:
a)
Facility/Title
b)
Safety Procedures
tag out/isolation, depressurization, etc.,
c)
Material required for installation
penetrators by serial number
soft goods
test set-ups
d)
Detailed work procedures
list work steps in order
list special work instructions
e)
Testing required
list test set-up requirements
pressure, time, pass/fail criteria
f)
Signature of person performing work and testing
CWPs may be pre-printed in a fill-in-the-blank format and used on
an as needed basis. Controlled work procedures for each
application should have individual numbers and be retained on
file until the next certification audit. An example of an
acceptable controlled Work Procedure is provided in Figure C.2.
Note: Deviation from the certified design within the Scope of
Certification requires SCA Approval.
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