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Reg. 608, Reg. 609
QUALIFICATION
TESTS FOR WELDERS ENGAGED IN WELDING OF BOILERS AND STEAM-PIPES
UNDER CONSTRUCTION, ERECTION AND FABRICATION AT SITE IN INDIA
AND IN REPAIRING BOILERS AND STEAM-PIPES BY WELDING
Reg 608
Age and experience
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| A candidate who wishes
to qualify for a certificate under these Regulations shall
not be less than eighteen years of age and shall have
undergone a regular apprenticeship of two years in Industrial
Training Institutes or an industrial organisation followed
by at least one year regular on-job experience as a welder
in a workshop or industry. |
Reg. 609
Tests for initial qualification of a welder
| (A) |
Theoretical Examination
– A welder shall be required to answer questions
on the following subjects, orally or otherwise:-
| 1. |
Electric Welder:- |
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(i) |
Weld preparation |
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(ii) |
Elementary knowledge of the working
of welding equipment. |
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(iii) |
Properties of material to be welded
– cold and hot working, thermal conductivity,
fusion point, oxidation (for welders engaged in
alloy steel welding). |
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(iv) |
Elementary knowledge of electro-technical
principles, kinds of current, striking arc voltage,
welding-arc voltage. |
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(v) |
Welding defects and their prevention
– influence of length of electric arc, effect
of excessive or too low amperage, slag inclusions,
porosity finishing the surface of welding bead. |
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(vi) |
Electrodes for different types of
welds and steels and joints in different positions. |
| 2. |
Gas Welder:- |
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(i) |
Weld preparation. |
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(ii) |
Working of welding equipment. |
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(iii) |
Elementary knowledge of properties
of materials to be welded – cold and hot working,
thermal conductivity, fusion point, oxidation (for
welders engaged in alloy steel welding). |
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(iv) |
Elementary knowledge of fuel gas
and flame adjustments for favourable welding condition. |
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(v) |
Kinds of welds, welding defects and
their prevention, welding techniques (right-ward
and left-ward, welding with two torches on vertical
surface, excess of gas or oxidation, preheating
of base material and subsequent heat treatment. |
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(vi) |
Filler metals. |
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