Document 3NO4qOG5GYp5RJ2jg8pj2qMqx
THIS COPY FOR MR. R
/PITTSBURGH - 7 A.R.
/ALUMINUM COMPANY OF AMER:CA
ALCOA_BU !LD IN G PITTSBURGH. PENNSYLVANIA 1S2I9
B
ALCOA
1978 July 18
^^o^or,-: Australia ^Limited """
^AUSTRALIA
AND RELATED INFORMATION
: *-..
..: ,v\ A
i,
.Vrti.KtrfiS I
Mgki
Chas asked that I forward information on
^r^%tems. jt:hat |were_ requested while he visited Point Henry tY
crue Sited duripg lyour ivls it. to the United States'.;i?v;v- Y-- ;i:
'i .'':
/ /Y
aiq^Sygt'etri^gPdr TdverVTho r:TBVoSonrr* `AAr"rc*Whh : iorVffY'4t\tfee'i'lft. TiPRr'o.SesH1FCtY*~
~TM~~""tiridFa^^|tfe^ypiq^^do6l,L guard detaiIJ:^FWj
85^BBraanidTia^normal-installation /S>?
x'-s&e-?r^nSS&? 'r.r- is.
eW'Ifelabl iri^iOUfS
SSfta'S'VVji-.
_ ''
fyith Asbestos Insulation
v - :<.
*-r -;l?S` +:.$}
- V Vv :^r
We are enclosing a February 5> 1973 letter issued
. '-
by Messrs Y A. J. Sartschev and R. P. Carter, entitled
"Replacefnent of Asbestos-Containing Insulation Block" .
This letter and the .various attachments list the
recommended procedures to prevent asbestos exposure.
*{**-'15: ;
Please note that effective July 1, 1976, the asbestos fiber exposure limit was reduced to
allowable 2 fibers
pe'*r"
-
'Y-
Ifc
millimeter as stated in the AJS-RPC letter. (A copy v of the AJS-RPC letter and its attachments are being
m
attached to Mr. J. H. J. Erkins1 copy of this letter.)
III. Tennessee's Three Piece Water Cooled Door Frame and Water Cooled Sticker Boor
We are enclosing one print of each of the following drawings:
411084 1426
Mr. D. J. Forster 1978 .July 18 Sheet No. 3
In.addition to these drawings, refer also to
Drawing A-IO8663-AT which is a side view in the
5-pieCe:door arch-Sticker door drawings (listed
A earlier). 4
.
"-'4.:
'installations use silicon carbide section and first knuckle of. 4he;4 |?>#l\^aCe;?^a;rthi soldier, course. ' Many melters use,*; ';*
oisnatiorii'^or drawings on any of the above
^ ' ' ' - ' i-'i ' - - " * j, -
4 ' 'Attachments
;CC; 4l.L.. E. : Fletcher - Point Henry Works ; - A:' R.' Hendrie - Point Henry Works J. H. J. Erkins - Point Henry Works T. I. S. Boak, Jr. - Pittsburgh - 14 A.B.
R. P. Carter - Pittsburgh - 7 A.B.
A. J. Sartschev - Pittsburgh - 3 WPH
Mr. D.J. Forster
1578 July 18 Sheet No. 2
Drawing No.
Description
.St1eker iWg. No. 3239 Rev.
Sticker Door Detail
' A-108663-AT
Door Ass 1 y.
I&SSj&s
A-108664-AT
Fabricated Details
Assembly' Sect iori3'4^|
vO. .. Water .'.Plpipig.^''V
Mm Hater. Pi ping'7 > 4 04;.:
:^oc.f^s;3v-&M' v ~7 ' /
:'
-
-
gvj;. ^i3AccojxU.Eig'4tb4;reports we have received, Tennessee has had home
i'^adb'i^^aJQidSrjJlcMis .'in'-^peration '-for a year or longer without
jfS? ^^^ej^hyetl^^rihMJtwo doors explode due to rapid steam
||i\i^^^lie^^at^r^ldw,:;de:^reased or stopped. I call your attention /to . the /piping drawings as this is Jibe-/}7
hpd^pf^jreyenting'Athe explosions. Careful pipirig'Oto
i z^^li^^^^^6rt^ii'sphargev;piping'.;.an4. a positive
';enci6sirigf^>-copy of Davenport's. cast skim .tool,-
Drawing No;- B-150644-MW. Davenport initially had these; platesj made of the heat resistant cast iron material and- having two sloping ribs on one side and only a .... center nib on the opposite side. Plates were then made rith ?beat resistant ductile iron materials and.
life -.Was ./improved as breakage was reduced. Most recently they havepadded the other 2 ribs (on side with vertical
center rib) and are specifying material as ASTM-A536
Grade.-65-45-12 Euctile Iron. These blades are lasting quite-well and finally fail due to erosion.
.
V. Standard Design Skim Shelf
Our standard design is shown on the following drawings which are enclosed:
D-154952-PE
D-154953-PE D-154954-PE
A-108660-AT
Skim Shelf Eetail Skim Shelf Support Skim Shelf Support Typical Refractory at Skim
Shelf
4110841427