Page 7 of 18
Date: 2019-02-12
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3. Welding the bottom flange
• When the position has been decided, a 220 mm hole is cut in the hull.
•
The bottom flange, Item (1), is welded into the hull. Standard welding practice, methods and procedures
should be observed, but may vary. (See welding notes).
Attention:
The bottom flange is a part of the Sea Valve that is machined with high accuracy and it should be
protected after mounting to avoid damage to the bottom flange surfaces. This to avoid leakage. If the
valve is pre-mounted, be sure to protect the valve from being polluted by welding debris.
WELDING NOTES!
All bottom parts and flanges for welding are
precisely machined parts. During welding of these parts
to the ship’s hull plates, careful attention must be paid to avoid construction strain on the bottom
parts and flanges.
• Let parts cool down during welding.
•
Over heating may change fit and form and result in
non-conformity with intended sensor/
transducer.
• Welding to thick hull steel plates will
exert high stress on bottom parts and flanges.
• Especially care must be taken during welding of
stainless steel flanges.
• Work must be performed by a
qualified and certified
welder.
Welding the bottom flange in ship’s hull.
SKIPPER Electronics AS
SB-100-SB Operation and Installation Manual
