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Communication Form Site Management
(Compile date )2012/10/26 (Refrence No.): 330BCFSM024(PROJECT NAME) MADHUCON PHASE II(TYPE OF BOILER) 330B-MX1(UG-487/13.7-M)
PART NAME
(BRICKS LAYING DWG)
(DRAWING NO.) 330B-5
Problemdescribe
3#
Regarding to the problem of 3# castable on site construction,
introduction will be made step by step as the photo during
construction.
Soultion
. The serious waste of materialsduring site construction
1 pic11
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During site construction, materials are wasted seriously,Pic. 1 was
taken during right separator import construction;
. Improper storage of the materials
2 pic2 3 pic3
23
Pic.2 and Pic.3 showed the storage situation of refractory brick and
insulating brick on site, all bricks on site were air storage, not
meet the castable storage requirements.
. Castable junction surface
4 pic4
4
Must ensure the smoothness of the position pic.4 showed after
construction every time.
here should be
smooth, or castable
will be leakiness
and easily dropped.
correctly
construction,
smoothness satisfied
the requirements
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.Pouring on header
5 pic5
300mmWhen separator band header castable construction,300mm transition
region should be ensured.
. During construction of plastic material
6 pic6
7 pic7
300mm
There should be
no binding gap 300mm
above the header, castable
should be completion
entirely in this area.
Wrong
construction ,
water enters
Right
construction,color after
construction
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6
7
Water entered part locaion of plastic material, lead to the
construction quality can not meet the requirements(as the comparison
in pic. 6), workers can use the agglutinant(pic.7) for washing hands
during site construction, no water for washing.
. Part of wall surface
8 pic8 9 pic9
898
Comparision between Pic.8&pic.9, part of wall surface is not smooth,
maybe theres no firmly hammer after construction.
. Asphalt brushed uneven
10 pic10 11 pic11
1011
Asphalt brushed uneven,as pic.10(upper part of furnace side
wall),pic.11(underpart of furnace)
. Reserved combination spaceof two different parts does not meet the requirements
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12 pic12
The reserved space at center cylinder of seperator,castable here will
be easily dropped during boiler operating.
. Nail construction in water-cooled plenum
13 pic13
The
space here is
too narrow,
bigger space is
needed to
ensure the
strength.
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14 pic14
15 pic15 16 pic16
131414
1516
Pic.13 and pic.14(in pic.14,nails blocked the air inlet of cowl),nailswelding does not in according with the drawing,site construction
should be as pic.15&16)
. Sealing should be donebefore the water-cooled plenum castable construction
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17 pic17
18 pic18
19 pic19
Unfinished
sealing here.
Unfinished
sealing here,
coal will
easily
leaking.
Sealed
here.
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17181918
In pic.17&18, different parts of water-cooled plenum had not
sealed yet; pic.19 showed the completed sealing style, the same part
as pic.18.
. Return device construction
20 pic20 21 pic21
2021330B-5
Pic.20&21 should open the venthole during
ovening according to 330B-5 technical requirements when welding the
nails.(venthole can be made by welding gun directly.
22 pic22
2#222#
3#4#
2# Boiler (pic.22), template and vibrator are unused during return
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apparatus construction, result in large area castable damaged during
2# boiler operating. Second stage( 3# and 4# boiler) are required to
use template and vibrator, or re-construction should be apply.
.
23 pic23
23The reserved space
from furnace exit to expansion joint of separator (pic.23) is too
small.
4#Note: regarding to above problems, re-construction should be appliedif seriously affected the construction quality; if not seriously,should pay attention during construction of 4# boiler.
(CONSTRUCTION COMPANY)(REPRESENTITIVE):(SIGN DATE) Annex
the
space here is
too smallcan not meet
the
requirement
the
space here
can meet the
requirement
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