Hi,
Find below the ASME-IX Interpretation. Hope it will clear your doubts.
"direct visual control" - welding operator having direct visual control and giving verbal command to the welding operator having remote control.
"remote visual control" - welding operator having remote control and follow the verbal commands from welding operator having direct visual control with the weldment.
Interpretation: IX-95-31
Subject: QW-361.2, Essential Variables – Machine Welding
Date Issued: May 30, 1996
File No: 96-141
Background: A welding operator has direct visual contact with a pipe weldment that is being welded utilizing machine orbital pipe welding equipment. This welding operator is giving verbal commands to a second welding operator, who does not have eye contact with the weldment, and who is positioning the weld head and wire aimers located on the head remotely, during the welding of the joint in accordance with the verbal commands of the first operator. Each welding operator has been qualified to perform both remote and direct visual control welding.
Question: Are these welders qualified to make the subject weld in accordance with QW-361.2, even though the welding operator having direct visual control is directing the positioning of the orbital pipe welding equipment verbally and does not have "hands-on" control of the welding head?
Reply: Yes.
Thanks & Regards,
(Karthik)
Karthikeyan.S
QA/QC Manager
German-Thai Boiler Engineering Cooperation Limited.
Rayong Factory ;
379 Moo.6 Soi 8, Tambol Pananikom,
Nikompattana, Rayong 21180 THAILAND
Tel : +66 38 897 035-9 Ext. 137
Fax : +66 38 897 034
Hand Phone: 0066 892512282
From: mustaffi <mustaffi@dynac.com.my>
To: materials-welding@googlegroups.com
Sent: Thursday, August 22, 2013 3:38 PM
Subject: [MW:18499] Re : Essential Variables for Machine Welding
Dear All,
Can anybody help me to explain in details of these statement .
QW 361.2 (b) Essential Variables for Machine Welding
A change from direct visual control to remote visual control
What's the meaning for "direct visual control" and "remote visual control"
Under Page 58 – Asme Section IX 2011a
Best Regards
Mus
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