SECTION B - Derry City Council
SECTION B - Derry City Council
SECTION B - Derry City Council
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chipping and grinding. No blasted surface shall be left overnight<br />
before painting. All interfaces of connections, except those which<br />
are to be clamped together by friction grip bolts, shall be fully<br />
primed before assembly.<br />
The Steelwork Sub-Contractor shall take all necessary precautions<br />
to satisfy the relevant sections of the Factories Act and any other<br />
regulations governing the handling and welding of primed steelwork.<br />
Care shall be taken to remove grease and oil including cutting oil,<br />
from the primed steel surfaces immediately prior to painting.<br />
If the primed surface has become contaminated with dirt or soluble<br />
salts etc, these shall be removed with clean water and the surface<br />
then allowed to dry. Handling of the coated steel shall not take<br />
place until all the coating is touch dry. Coated Steelwork shall be<br />
protected against mechanical damage during handling,<br />
transportation and erection. Fabricated steelwork which is to be<br />
stored either on site or in the works, awaiting delivery or erection,<br />
shall be kept clear of the ground and stored on suitable packing in<br />
such a way as to ensure that the minimum amount of water or dirt<br />
comes in contact with the coated steel. Suitable packings shall also<br />
be placed between layers of stocked steelwork.<br />
All sharp edges on steel sections etc. shall be removed by light<br />
grinding to improve the quality of the final paint system. Such<br />
edges in addition shall be "stripe" painted first, to allow a build up of<br />
paint on the steel edges, prior to the application of the paint<br />
generally.<br />
The following is a summary of the anti-corrosive paint system. The<br />
paint system is an International Paint Company specification. Other<br />
paint manufacturer's anti-corrosive paint systems, of equal quality<br />
and performance, may be substituted providing the Engineer's<br />
written approval is obtained.<br />
Shop primer: Apply Interplate 180 (2 pack Epoxy primer<br />
with zinc phosphate and iron oxide) to blast cleaned steel<br />
at works immediately or within 2 hours of blast cleaning. After<br />
fabrication carry out remedial treatment of damaged areas and<br />
welds the latter by blast cleaning followed by touch up with<br />
Interplate 180.<br />
Dry film thickness: 25 micrometres.<br />
- Shop Second coat: Intergard 251 (colour to be defined by CA).<br />
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