Page 33 - Quick Guide to Welding and Weld Inspection by S.E. Hughes, Clifford Matthews

A Quick Guide to Welding and Weld Inspection

Equipment
. Welding machines are in date for calibration or validation
(welding machines with meters are normally calibrated
while machines without meters are validated).
. All ancillary equipment such as ovens, quivers, remote
controls, torches, cables, etc., are in good condition.
. Any heat treatment equipment is in good condition and in
date for calibration if required.
Materials
. Verify the correct materials are being used and are in an
acceptable condition.
. Ensure the material certificates are the correct grade and
the batch or heat numbers correspond to the actual
material.
. Verify the correct consumables (covered electrodes, wires,
fluxes or gases) are being used and have been correctly
prepared.
. Verify any consumables certificates match consumables
batch numbers.

Safety
. Ensure all safety precautions are being adhered to and that
any work permits required are in place.
. Ensure all electrical equipment is in date for test.
. Ensure correct and sufficient ventilation is in place.
. Ensure the correct PPE is being used.
Weld joint preparation
. Ensure the correct weld joint preparation has been formed
in accordance with the specified procedure using an
approved method (flame cut, ground, machined, etc.).
. Ensure the joint is correctly sized (groove angles, groove
radius, root face, etc.) and the fit-up is within tolerance
(root gap, alignment, etc.) using correct restraints.
. Ensure any required pre-heat is applied using the correct

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Woodhead Publishing Ltd – A Quick Guide to Welding and Weld Inspection
Data Standards Ltd, Frome, Somerset – 17/9/200902QG Welding chap2.3d Page 18 of 21