weld which has been visually inspected and ultrasonically tested
and has been found acceptable in accordance with MIL-STD-1699 and
ASTM E 10. This qualification may be accomplished either by shop
fabrication of the joints or on the first four joints welded at
the work site. If procedure qualification is accomplished at the
work site, perform no further welding until the qualification
weldments have been accepted by visual inspection and ultrasonic
tests. Obtain written approval of the acceptability of the four
welded joints from the Contracting Officer prior to continuing
with welding.
c.
Ambient temperature: Welding procedure shall be considered
qualified for use at an ambient temperature of 10 degrees C 50
degrees F and above regardless of ambient temperature during
welding of qualification assemblies. No welding shall be
conducted below 10 degrees C 50 degrees F without a specifically
qualified procedure. Procedures qualified for use at ambient
temperatures less than 10 degrees C 50 degrees F shall be
qualified by welding test assemblies in accordance with the
procedure qualification requirements of this specification at the
desired minimum ambient temperature plus or minus one degree C 5
degrees F. Procedures thus qualified shall be considered
acceptable for use at the minimum qualified ambient temperature
and above.
d.
Wet weather welding: Perform welding only during dry weather. No
welding will normally be permitted on wet, showery and inclement
days. However, if means are provided to protect the work and work
area, welding may be performed during other than dry weather, if
approved by the Contracting Officer. Welding in confined spaces
shall comply with AWS D1.1/D1.1M to assure adequate ventilation
for personnel safety.
1.3.4
Required Data
Submit thermite kit manufacturer's instructions and recommendations
covering rail end preheat treatment, thermite ignition, mold removal, and
finishing.
1.3.5
Welding Procedure
a.
Thermite kit manufacturer's name and kit size or designation
b.
Thermite kit batch numbers and manufacturing date
c.
Welding procedure designation (name, number)
d.
Size of rail section being joined and type of rail
e.
Test assembly identification number
f.
Results of nondestructive testing of qualifications assemblies
g.
Date of qualification (test date)
1.3.6
Required Qualification Welds
Submit operator qualification welds in accordance with paragraph entitled
"Operator Qualification." Submit procedure qualification welds in
SECTION 05652N
Page 7
Previous Page
