Volume-IF - JantERmantER

3.5.2 Cement Paint
OCPL-K9AOl
and ihe drying lime between consecutive coals shall not be less than 5 hours.
The overall combined thickness of paint shall be a minimum of 230 microns.
The outside face of the Chimney shall. unless specified othelWise. shall be
painted with Cement water proof paint. The quality shall be approved by the
Engineer. Necessary samples shall be submitted to the Engineer for his
approval. The sUrfece of the shaH shall be prepared as per paint
manufacturer's specjficalion. In addItion. care shall be taken thai the surface
Is free from stain. honey comb and any rough and uneven surface. The joints
between two shuttering and two lifts of shuttering shall be so prepared that
any uneveness. if by chance exists. shall be removed. If one coat of paint Is
not suffICient to give. the required finish. the Contractor sha. repaint the
surfece. until the engineer is satisfjed with the Workmenship. The paint shall
conform, unless othelWise slated, to 15:5410. Necessary samples, test
certificates and manufacturer's literature shall be submitted.to the Engineer
for approval. . .
3.5.3 Insulation and Packing
AU insulation material should be of dimension and type, shown in the drawing.
Load· bearing insulations at supports and side restraints of Steel liners should
be an assembly of M.S. Plates, Stainless Steel Plates, PTFE (Poly Tetra
Fluoro Ethylene) sheets and or/asbestos fibre reinforr.ed boards (SINOANYO
BLOCKS). Insuliltion to be fIXed on outer surface of steel flues should be
mede of glass or mineral wool.
a) load Bearing Insulation Block
~oad bearing assembly should consist of three units and be fabricated
according to approved drawings. It would be fabricated from mild steel
units with a stainless steel sheet bearing plate and load bearing
insulation blocks as indicated in drawing.
The first unit is bolted to the. supporting beam. 11 consists of a M.S.
base plate with bolt holes on which:a ffiachined M.s. 'plate is welded.
This plate IS. provided with receSs.for .PTFE sheet (conf9rming io. BS :
... 5400) to seal. being lubricaled.with sllicbn grease.'
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The second unit also consists of a M.S. plate having adequate size &
thickness as shown in drawing. While one surface of the plate is
provided with a stainless steel bearing plate the other surface has a
thin layer of lead! elastomeric sheet. The side having stainless steel
surface is placed on PTFE surface of First unit.
The third unit consists of two layers of load bearing insulation blocks
each having a minimum thickness of 50 mm and factory bonded to
top & bottom M.S. plates. These are separated by 100 nnm. long load
bearing insulation dowels as shown in the drawing. These plates are
In tum welded to two additional M.S. plates. Of the two surfaces thus
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