Volume-II of IV - GAIL

MECON LIMITED
REGD. OFF: RANCHI (BIHAR)
PROCESS & PIPING
DESIGN SECTION
NEW DELHI
TITLE PIPING FABRICATION AND
ERECTION
STANDARD SPECIFICATION
SPECIFICATION NO. PAGE 57 OF 62
MEC/S/05/62/06 REVISION 0
3.7 Three copies of each acceptable radiographic procedure (as outlined in
Specification no. MEC/S/O5/62/02) and three copies of radiographic qualification
records, shall be supplied to COMPANY. One set of the qualifying radiographs
on the job shall be kept by the CONTRACTOR's authorised representative to be
used as a standard for the quality of production radiographs during the job. The
other two sets shall be retained by COMPANY for its permanent record.
3.8 Three copies of the exposure charts relating to material thickness, kilo voltage,
source to film distance and exposure time shall also be made available to
COMPANY by the CONTRACTOR.
3.9 The CONTRACTOR shall, on a daily basis, record for each radiograph (1)
radiography number (2) approximate chainage of weld location, (3) whether or
not the welds meet the specified acceptance standards and (4) the nature and
approximate location of unacceptable defects observed. It must be possible to
relate to a particular butt weld and welder on piping drawing and pipeline
alignment drawing.
3.10 Each day's production of processed radiographs shall be properly packaged
separately, identified by at least the (1) date, (2) radiographic unit, (3) job
locations, (4) starting and ending progress survey stations and (5) shall include
original and three copies of the daily radiographic record. The package shall be
submitted to the COMPANY daily when possible, but in no event later than noon
of the following day.
3.11 The CONTRACTOR shall provide all the necessary facilities at site, such as a
dark room with controlled temperature, film viewer etc. to enable the COMPANY
to examine the radiographs.
3.12 The CONTRACTOR, if found necessary, may modify the procedure of
radiographic examination suiting the local conditions prevailing. This shall,
however, be subject to the approval of the COMPANY.
3.13 COMPANY shall have free access to all the CONTRACTOR's work facilities in
the field.
3.14 Any approval granted by the COMPANY shall not relieve the CONTRACTOR of
his responsibilities and guarantees.