Volume-IF - JantERmantER

iv)
TITLE:
TECHNICAL SPECIFICATION FOR
REINFORCED CONCRETE
CHIMNEY
SPECIFICATION NO. PE-TS-360-620-C001
VOLUME - II B
SECTION - C SUBSECTION : I
REV.NO. 0 DATE 18.09.2010
SHEET
OF
The m aterials a nd w orkmanship m ust be of good qua lity a nd a ccepted
standards and specifications.
v) All materials for construction are to be procured by the contractor and should
conform to relevant I.S. specification.
vi)
vii)
viii)
The site Engineer reserves the right to reject a ny material not upt o the
specifications.
Unless specified other otherwise rates quoted under the contractor shall apply
for works irrespective of lifts and leads. R ates shall also. include providing
scaffolding and its subsequent removal.
After completion of the work the buildings and areas around them should be
cleared all rubbish debris etc. and handed over in fit condition for occupation.
12.0 INSULATION
12.1 The heat insulation to be fixed on t he inner surface of shell shall be semi-rigid resin
bonded f ibrous m aterial c onforming t o I S: 819, or e quivalent with a maximum
coefficient of thermal conductivity of 0.52 MW/CM/Deg. C at a mean temperature of
100 deg. C . The Insulation material shall have a delivered density of 100 K g/Cu.M
for resin-bonded rock wool or 64 Kg/Cu.M for resin-bonded glass wool. Thickness of
the insulation as specified in BOQ 's is the minimum as installed.
12.2 No negative tolerance shall be pe rmitted i n t he bul k de nsity of i nsulation. T he
insulation s hall be i n t he f orm of s labs w rapped on t he i nner s urface of shell with
galvanized wire mesh as specified. The insulation should not be affected by acid and
should be free from any impurities which may cause corrosion.
12.3 The i nsulation should be a ble t o s ustain s tructural vi brations a nd s hould not s ettle
under these conditions during erection, construction and operation in any case. The
insulation shall also be suitable tied to prevent dislocation under adverse conditions.
Care sh ould be t aken i n t he s election of t he i nsulation m aterial t o e nsure t hat t he
material can safely withstand the l ong term expos ure to the maximum flue gas
temperature without deterioration or break-down. Slag Wool insulation shall not be
acceptable.
12.4 Unbounded wool shall be of Type–I loose, glass wool in conformance with IS: 3690
or T ype-I l oose r ock W ool i n c onformance W ith I S: 3677. The insulation shall be
packed to achieve a density of 64 Kg/Cu.M in case of glass wool and 100 kg/Cu.M in
case of rock Wool. Bonded and unbonded insulation shall be of the same material.
12.5 The insulation material shall be tested for its stipulated characteristics and properties
listed i n t his s pecification a nd I S : 8183 a nd t he dr awing a ccordance w ith the IS: