Document NG45E8QQXJpNp29qO92MBQKqQ
G.A. ZANOTTI MECHANICAL ENGINEERING PINJARRA PLANTSITE
March 26, 1979 ApR g ^79
PLAINTIFF'S EXHIBIT AL-919
SUBJECT: ALCOA ENGINEERING STANDARD 33.7.9
Concern has been expressed regarding the use of asbestos-impregnated insulating materials as specified in Alcoa Engineering Standard 33.7.9 7 titled "Piping, Vessel and Tank Insulation Materials" datecJApril 1975)
The general trend in Australia is to move away from materials containing the mineral and it would be appreciated if references to asbestos were deleted from the above standard.
Particular sectinns-fcjjnder the standard, which mention asbestos are 2.3.1 an^2^8. ^ ^
Enclosed is literature'showing the calcium silicate pipe and block insulation which has been used on Units IV & V and which will become the standard in future. The material is readily available through the local agent Bains Harding (Insulations) Pty. Ltd.
Thanking you for your co-operaticn in this matter.
G.A. ZANOTTI
GAZ:mah
Enel.
cc: N.G. Bennett W.R. Cook
i'. 13
v
BANS HARHIXG M0"5'
45 ROBERTS STREET, CjLCRKE fARK, W-A., 17.
i
C'
r Ml
] :i
NEWTHERV 800 is a tough, highly efficient cal cium s'.'xate instilant in which the traditional asbestos fibre leinforgcmcnt has been rep'aced by specially developed binders enabling the materiel to he used
at service temperatures up to S00:C (1470'F). In confcrmity with clause 12 of B S. EEcS: Pert 2: 1970 the product is identified as being entirely free from asbestos by its c'istir.cth e ycllc-w i o'ct ring.
TEMPERATURE RANGE For hot face temperatures up to 800*C (1470rF).
IVIr.rt'mtim Service Temperature
In order to satisfy the requirements of B.S. 3958:
Part 2: 1970 in respect of Heat Resistance, an
insulation material, when tested in accordance with
B.S. 2972 at increasing temperatures, shall be
deemed suitable for use under conditions of soaking
heat up to the temperature at which the following
requirements are met:
(i) Linear shrinkage:
2.0 per cent maximum
(ii) Loss in weight:
15 per cent maximum
(iii) Compressive strength,
reduction in thickness
under a load of
245 kN/m2: (50 lbf/in2) 10 per cent maximum.
NEWTHERM 300 is well within the above Spccifi-
cat on limits up to the recommended service
temperature of 800`C (1470'F).
Under actual conditions of service the maximum
temperature at which the material can be used
depends largely upon the linear shrinkage which
is permissible, the particular conditions of temp
erature gradient, and upon the degree of mechanical
stress imposed on the insulation system as a whole.
1.1 rjEAR SHRINKAGE C-fJ HEATING
Values of linear shrinkage tabulated be'ow refer to NEWTHERM 00 without added mechanical lead ing.
TEMPERATURE
Shrinkage after heating for 24 hours
CC F
400 750 500 930 600 1110 700 1290 800 1470 350 1560
%
0.7 0.8 , i.o 1.3 ' 1.9 23
COMPRESSIVE STRENGTH
The compressive strength characteristics of NEW THERM 800 are expressed in the following table in terms of the reduction in thickness under a load of 345 kN/m2 (50lbf/inJ) after heating. Due to the relatively inelastic nature of calcium silicate type insulants, disruption or onset of crushing usually occurs at deformations of less than 5%.
TEMPEF1ATURE
REDUCTION IN THICKNESS
C ;F
per cent
400 750 500 930 600 1110 700 1290 800 1470 850 1550
1.5 1.6 1.7 1.9 3.0 3.8
RESISTAP.'CE TO VICRATION
One of the many facilities available at our Research Laboratories is a rig designed to simulate the long term effect of service on modern power plant. The photograph shows NEWTHERM 80*0 being subjec ted to the accelerated thermal and vibration fatigue test.
LOAD AT DISRUPTION
kN/m2
lbf/in2
>690 >690
620 517 414 310
> ICO > 100
0 75 60 45
AVAILABILITY
!ab Insulation
FINISHES NEWTHERM COO slabs are normally supplied plain, but prices would be quotad on request for cowered slabs.
SIZES
FLAT SLABS
Standard lengths Wi dtht
915mm 457mm
152mm 305mm
1000mm 500mm
500mm 250mm
Thicknesses
25,38,50,65,75,90,100mm
GROOVED PANELS 915mm x 305mm lOOOmm x 205mm
thickness 38, 50, 65, 75mm
Suitable for applications involving diameters from 610 to 1070mm.
A combination of Type C Lags and Grooved Panels can be used for diameters frem 228mm to 1070mm.
Alternatively fully machined Radiused and Bevelled Lags can be supplied to customer's specification.
SPECIAL SHAPES can be manufactured, prices subject to quotation.
Rac!iiiSt;(J and Ravelled Lags
TYPE A
Purpose-width moulded segments with machined bevels, ensuring an accurate fit to specific diamaters within the range 228 to 2140mm, without necessity for site trimming.
TYPE 8
Standard-width moulded segments with machined bevels to fit specific diameters within the range 228 to 2140mm, normally
requiring site trimming of closing segment.
TYPE C
Standard-width moulded segments with standardized bevels to fit n range of four "reference'* p'pe sizes within the range 223 io 790mm as shown in the tcblo, normally requiring site trim* ming of closing segment. In individual cases bevels may require some adjustment to ensure close fit: alternatively, where necessary, joints may be filled with NEWTHERM SUPER* 'PLASTIC.
This type of lag has the advantage that it simplifies stock holding and reduces delivery times.
Pipe Insulation
FINISHES
NEWTHERM 800 pipe sections are available plain or canvas covered. For sizes up to and including 114mm o/d the canvas covered pipe insulation is supplied as a complete section, the canvas forming a hinge, and for larger sizes in half segments each Individually wrapped. Black painted metal bands, 3 per 915mm length, can be supplied.
SIZES
In half sections in thicknesses 25, 38, 50, 63, 75mm
Standard length Min. 0/d pipe size Max. o/d pipe size
915mm 21mm
219mm
Each carton cor.::'-.r s'c.Vr'd 9
n
ccntaae of <`-E7.mr. `-jlf li'v.'-.r t' cd_ (? c.
p*i?s c ,'l pjrj r.r re.
For pipe i iCS
io 219 r.m o `o 33mm thick r, ul> iion
supplied as CV J-zn:s. All c: er t 'c' ** -'res, tuc :r. u'-tion
surp'icd cs l.elf -1 !c TS fir.'.1 jr!:: 2 cr- ' s ::>..'cc1).
For d^rrc/'.'S r*-- -*.r- I\-.n 2TC ns, :t,
ern h: `
in the form cf 913mm kng
-d r-d l:cse".-d 'r s, of
v;h*ch the fo!tov. ..g thi -j ryp.'S C rc v
NEV.'/i LLS i* a
;c rk of \*c.va"s *- - .'<: on Co Ltd
Refeicnce Size
Standard Arc Width
(mm)
Optimum
pipe o/d renge (mml
152 228
9 169 to
184 275
Radial Thickness
(mml
25 / 38 <5 (63
75
Number of lags
per Carton
45
27 21 17.
14
25 40
12 169 276 38 25
to 50
21
381
63 75
17 13
382
25 38
41 27
18 169 to 50
21
63' 560 75
17 13
25 561 38 24 169 to 50
63 790 75
38 27 21 17
13
Frf d'a.n _tc-s b?;'.'.r;n 2*^0 and 2G-*Cmm the use of trvei'rdw"'y ks*s ts c 'T*: ` y p.: :r\;b`e. Above 30-1 Cmm, f!;t `Jabs cf ivfC.h ~iy La c'4,'loped, dependent up:n t ie :h'C`ncss involved.
P-'-O'V-GWG 'all p'oducts). 1 me. Shrink-w:rpped in polythr-p or packed in cartons. r>i'ort: Pz-cAcd in cirtor-s that crc shrink-v.rcppad in poi> thene.
Pr>r;cd m Grcat Britain
'""c
Cci l
n Ty-o `.'ror \'L.~ofUl E-V^nd
I---------I i U A N L P
iMowSheirm <800
Asbestos free insulation
DESCRIPTION
NEWTHERM 800has a low density of 190-230,kg/m3 (12/14 lb/ft3), a low heat capacity, and the material has a uniformly low rate of shrinkage. It is available in slab and pipe sectional form in a wide range of sizes and thicknesses, and is easy to cut to shape.
The wide temperature range and economic price of NEWTHERM 800 makes this an all purpose insulant, obviating the need to specify layers of various insulating materials for boilers, pipework and all ancillary heat equipment.
RECOMMENDED THfCHNE5SES
A separate series of Design Data Sheets on insulation thicknesses is available on request.
DENSITY
190-230 kg/m3 (12-14 lb/ft3)
SPECIFIC HEAT CAPACITY
0.84 kJ/kgK (0.20 Btu/lb deg F)
COMPRESSIVE STRENGTH
(i) Dry under a load of 415 kN/m2 (60 lbf/inJ):
(ii) Wet (after 18 h. immersion in water under a load of 170 kN/m2 (25lbf/in2))
1 reduction in thickness 1 reduction in thickness
FLEXURAL STRENGTH 345 kN/m' 50 Ibf/in*
THERMAL CONDUCTIVITY
MEAN TEMP :C
50 100 150 200 250 300 350
W/mK 0.0515 0.056 0.061 0.066 0.0715 0.0775 0.0845
MEAN Btu in/ft2h TEMP. F degF
100 0.35 200 0.335 300 0.42 400 0.45 500 0.50 600 0.55 650 0 53