FIFTH CANADIAN CONFERENCE ON NONDESTRUCTIVE ... - IAEA

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CONVENTIONAL FILM RADIOGRAPHIC INSPECTION
(Typical Costs in 1983 Dollars)
Single joint operation. 30" 0 pipeline, 180 joints per 12 hour shift, 10 day
duration of job, internal radiography.
6 man radiographie crew
(3 men per shift)
2 Level II inspectors
($400 each/day)
4 Level I inspectors
(§250 each/day)
1 crawler technician on
24 hour call ($400)
Cost per joint (expendables)
$1.00/llnear foot of weld
($8.00 per joint)
Cost of equipment (crawler
facility, dark room,
dryer, maintenance room)
10 day job cost
800
1,000
400
$ 2,200 Labor
$ 2,880 Expendables
300
$ 5,380
$ 53,800
Equipment
Day Rate
Note: This table does not account for transportation costs.
subject to human variability. Shielding must sometimes be replaced to avoid
scratches appearing on the radiographie images. Film is interpreted on a
high intensity light viewer screen. The viewing area must be kept clean and
dry. Film interpreters must stay alert throughout their shift.
A major source of mechanical downtime is due to malfunction of the Internal
crawler. Crawlers provide the radiation source when internal shots are made.
They have been known to run down the line, lose power, and generally break
down.
9. TRACEABILITY OF RECORDS
Accurate record keeping is required when radiographie weld examination is
performed. The ability to trace the radiographie record of a weld back to
the original weld and specific location on the weld is necessary. Currently
lead number belts and the flashing of identification Information onto the
film are common means of keeping identification information. Discontinuities
and sections deemed unacceptable are noted on paper separate from the film.
For retrieval of records, the paper record must be matched to the film
radiograph. Also, with film processes running at such high speeds, the