UFC 3-430-07
24 July 2003
including Change 1, Jan 2004 and Change 2, March 2005
CHAPTER 8
REPAIRS AND ALTERATIONS
8-1
GUIDANCE. Repairs to the equipment may be necessary before
certification. The activity may already be aware of necessary repairs prior to any
inspections and tests. Prior to issuing a certificate, all deficiencies that cause an unsafe
condition must be corrected. The repairs must be completed in accordance with the
applicable code. For pressure parts, repairs must be performed in accordance with the
NBBI and ASME Codes. For combustion control safeguards (burner safety controls),
the equipment must be repaired to meet the requirements of the NFPA 85 or ASME
CSD-1, as applicable. When deficiencies are found in the pressure parts of MIL-SPEC
pressure vessels or pressure vessels of undetermined code origin, the vessels must be
rendered inoperable in such a way as to prevent further use. To ensure safe operating
conditions, repairs to flame safeguard equipment should only be made by the
manufacturer or his authorized representative.
8-2
CONTRACTOR REPAIRS. NAVFAC Letter 11370/02, 1637 of 18 May
1995, allows activities the option of using Navy welders qualified in accordance with the
applicable Military Standards to make repairs and alterations to boilers and unfired
pressure vessels, or a contractor holding a NBBI (R) stamp in accordance with Part RC
of the National Board Inspection Code. For welding repairs or alterations, the
contractor, \ or Navy organization furnishing the qualified welder, /2/ must complete a
National Board Form R-1 and stamping and nameplate attachment is required.
8-3
SETTING SAFETY AND RELIEF VALVES. The setting of safety valves
of power boilers and relief valves of UPVs within the limits of ASME Section I and VIII
are adjustments. Other changes in settings, welding, or machining are repairs. Repairs
and adjustments of these valves are not valid unless performed by the manufacturer or
a valve repair company. Repairs by the Government are prohibited. The contractor
is required to affix a National Board VR nameplate to the repaired valve. Whether the
valve is repaired or adjusted; document the breaking of the seal, the setting of the valve,
and resealing of the valve. Power boilers and UPVs are not certifiable unless all safety
and relief valves are sealed and tagged. Bench testing the valve with no adjustments
may be performed by a non-AMSE shop/Government. It is required that documentation
be provided including the valve's nameplate data, pressure at which it opened, date and
time of test and the signature of the tester.
8-4
RECORDS. ANSI/NB-23, National Board Inspection Code, Appendix 5,
gives the formats for the varies forms: Form R-1 Report of Welded Repair, Form R-2
Report of Alteration, Form R-3 Report of Parts Fabricated by Welding, Form R-4 Report
Supplementary Sheet. If the information in these forms is acceptable to the inspector,
the repairs or alterations can proceed and be inspected. Upon inspector approval of the
work, the activity must make a permanent record of the repairs or alterations.
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