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USEPA Aluminum Smelting
Air Pollution Regulations
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Aluminum Smelting -
Other Chemical Emi= ssions
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USEPA Plain Langua= ge Guide to the
Primary Aluminum N= ESHAP (EPA-453/R-99-011)
http://www.epa.gov/ttn/atw/alum= /alumpg.html
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Click to edit Master subtitle sty=
le
‹date/time&=
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1
=
U.S. EPA
Aluminum Smelti= ng
Air Pollution Regulations
Donna Lee Jones and Steve Fruh
U.S. Environmental Protection Agency
Office of Air Qual= ity Planning and Standards
Metals and Minerals Group
Aluminum Smelti= ng
Air Pollution Regulations
Donna Lee Jones and Steve Fruh
U.S. Environmental Protection Agency
Office of Air Qual= ity Planning and Standards
Metals and Minerals Group
Prepared for:
=
;
South
Trinidad Chamber of Industry and Commerce
(STCIC)
Aluminum Industry
Symposium
San Fernando,
Trinidad
Decemb=
er 6,
2006
2
USEPA Aluminum NESHAP
US Industry Description
US Industry Description
qHall-Heroult Process
•Electrolytic reduction of alumina by carbon (graphite)
•Molten
cryolite (Na3AlF6) is used as an electrolyte and
solvent for alumina
<=
/div>
=
lAlumina + Carbon ► Aluminum <=
/span>+
CO2
3
USEPA Aluminum Smelting
Air Pollution Regulations
qClean Act Air of 1990 required National Emission =
Standards for Hazardous Air Pollutants (NESHAP)=
3;
q189 hazardous air pollutants (HAPs) regulated
=
qHAPs of concern from Aluminum Industry:
§Polycyclic organic matter (POM)
=
§Hydrogen fluoride (as total fluorides, TF)
qOther HAPs reported:
§Benzene, cyanide, metal compounds, phenol, toluene, and xylene
4
Aluminum Smelting -
Other Chemical Emi= ssions
qCarbon dioxide is a process by-product
=
•Levels should be less then 1 kg/Mg Al produced
q Fluorocarbons (CF4 and =
C2<=
/span>F6)
=
;
q Sulfur compounds are fo=
rmed
from the pitch/coke (SO2<=
/span>, COS)
5
Aluminum
Smelting -
Other Impacts and Regulations
Other Impacts and Regulations
qAmbient Atmosphere Effects & Control
•State regulations limit fluoride in
ambient air and forage
•Cows (and other grazers) are the m=
ost susceptible
animals to fluoride emissions
•Grasses (sourgum), conifers, fruit=
s,
berries, corn are most sensitive plants to fluoride
•See
article on Fluoride Effects in Journal of Society for
Fluoride Research January 1984, Vol 17, pp 41-47
•
6
Aluminum
Smelting -
Other Impacts and Regulations
Other Impacts and Regulations
qWashington State ambient air quality “action=
levels” for
fluorides (Ch.173-481-100&110 WAC)
§For areas where livestock graze and forage is grow=
n for feed
§ Limi=
ts for
HF in air (averages):
§2.9 µg/m3 in 24 hours, 1.7 µg/m3 in 7 days, 0.84 µg/m3 in 30 days
§Limits for fluoride ion (F-) in forage in growing
season:
§ 40 ppm seasonal average, 60 ppm mo=
nthly,
and 80 ppm only once in t=
wo
consecutive months
7
USEPA Aluminum NESHAP
Regulated Emission Sources
Regulated Emission Sources
<=
span
style=3D'font-size:90%'>qAluminum
potlines
<=
span
style=3D'font-size:90%'>qAnode bake
furnaces
<=
span
style=3D'font-size:90%'>qPaste producti=
on
plants
<=
span
style=3D'font-size:90%'>qPitch storage
tanks
8
USEPA Aluminum NESHAP
Requirements for New Sources
Requirements for New Sources
qRequirements fo=
r new sources are more stringent
than existing sources
q
qAluminum potlines
§=
;TF 0.63
kg/Mg Aluminum (1.2 lb/ton)
§
qAnode bake furnaces
§=
;TF: 0.01
kg/Mg green anode (0.02 lb/ton)
§=
;POM: <=
/span>0.025
kg/Mg green anode (0.05 lb/ton)
l
9
USEPA
Aluminum NESHAP
Requirements for = New Sources (continued)
Requirements for = New Sources (continued)
qPaste production plants
§POM (continuous process):
5.5
g/Kg paste (0.011 lb/ton)
§POM (batch process):
12
g/Kg paste (0.024 lb/ton)
qPitch storage tanks
§POM: 95%
reduction of inlet emissions
10
US
Emissions Reductions 1997
Primary Aluminum N= ESHAP
Primary Aluminum N= ESHAP
q23 Existing Plants in the US
§Mixture of ol=
der
and newer plants
§Various alumi=
num
smelting technologies
§15 center-worked pre-bake, 2 side-worked prebake,
6 Soderburg
q&=
#13;
qPotline Reductions =
(23
plants)
§TF
§5,800 Mg/yr reduced to 3,200 Mg/Yr (50%
control)
§
§
•
•
11
US
Emissions Reductions 1997
Primary Aluminum NESHAP=
Primary Aluminum NESHAP=
qAnode Bake Furnaces=
(17
plants)
§TF
§636 Mg/yr reduced to 19 Mg/yr (97% control)&#=
13;
§ POM
§505 Mg/yr reduced to 81 Mg/yr (84% control)&#=
13;
§
qPaste Production Pl=
ants
(23 plants)
§POM
§132 Mg/yr reduced to 15 Mg/yr (89% control)&#=
13;
§
12
USEPA Aluminum NESHAP
Air Pollution Control Equipment
Air Pollution Control Equipment
qPotlines and Anode Bake Furnaces
§=
;Dry alumina scrubber (fluidized bed or injection) =
with fabric filter
qPaste Production
§=
;Dry alumina or coke scrubber with fabric filter=
3;
qPitch Storage Tanks (95% control)
§=
;Incinerators
§=
;Carbon adsorber
§=
;Condenser
&se=
ct;
l<=
span
style=3D'mso-special-format:lastCR;display:none'>
13
USEPA
NESHAP Program
Compliance Schedul= es
Compliance Schedul= es
q2 to 3 years from final rule publication
§EPA’s Aluminum NESHAP
§P=
romulgated
in October 1997
§E=
ffective
October 1999
q4 years if need extra time, case by case
§US facilities can apply for a one-year compliance
extension
14
USEPA
Aluminum NESHAP
Testing & Monitoring Requirements
Testing & Monitoring Requirements
qAl potline primary emission control devices
§=
;Daily visual monitoring
§=
;Annual stack test (TF)
q
qAluminum potline fugitive emissions (roof)
§=
;Initial stack test (TF)
§=
;TF testing
•Three
(3) times per month (staggered) initial
•Reduce
# times if good performance
• (<75% of limit)
q
l
15
USEPA
Aluminum NESHAP
Testing & Monitoring Requirements
Testing & Monitoring Requirements
qAnode bake furnaces
§ Init=
ial
stack test
§ Dail=
y visual
inspection
§ Cont=
inuous
operating parameter monitoring*
•Daily green anode charge weight
•Alumina scrubber
•Air scrubber
* E=
stablished
during initial performance test.
16
USEPA
Aluminum NESHAP
Testing & Monitoring Requirements
Testing & Monitoring Requirements
qPaste production plants
§Initial site inspection
§Daily visual monitoring
§Continuous operating parameter monitoring
•Coke scrubber: coke and air flowrates
17
USEPA
Aluminum NESHAP
Testing & Monitoring Requirements
Testing & Monitoring Requirements
qPitch storage tanks
§ Cont=
inuous
parameter monitoring system
§ Dail=
y visual
inspection of exhaust of control devices
18
USEPA
Aluminum NESHAP
Testing & Monitoring Requirements
Testing & Monitoring Requirements
qAdditional requirements
§Recordkeeping and Reporting
§Start-up, shut-down, and malfunction plan
§Corrective actions within one hour
§If
monitoring devices or visual inspections show emissions outside
limits
19
U.S.
Recommendations:
Center-worked Pre-= Bake Process
Center-worked Pre-= Bake Process
q“Pre-bake” process is best choice for new sources
=
§Pre-bake process forms aluminum in pots that are <=
/span>baked on site.
§Pre-bake process allows for better air emission co=
ntrol and is more energy efficient
§Soderberg process was used before the pre-bake technology was improved and is now inferior
qCenter-worked pre-bake cells have more success with emissions capture (and also control)
20
U.S.
Recommendations (continued):
Good Operation and= Work Practices
Good Operation and= Work Practices
qSuppression or avoiding “anode effects”=
;
§=
; Anode
effects increase power 10x and emissions of TF, CO2, and
fluorocarbons (CF4 and C2F6)
=
;
qControlling bath temperature
§=
;High temperatures increase TF emissions
qControlling bath ratio (Na fluoride/Al flu=
oride)
§=
;Low bath ratios increase TF emissions
<=
/span>
qMechanization/computerized process control
qGood hood maintenance and operation
•
21
USEPA
Aluminum NESHAP
Where to Find Our Documents
Where to Find Our Documents
qLocated on EPA website =
www.epa.gov
=
;
•EPA’s Technology Transfer Network (TTNWeb) http://ww=
w.epa.gov/ttn/
•Air Toxics Rules for Primary Aluminum Smelting http://www.epa.gov/ttn/atw/a=
lum/alumpg.html
•Proposed and final rules
•Background information documents
•=
“Plain
Language Guide to the Primary Aluminum NESHAP”
•Technical support documents
<=
/div>
22
For
Further Information on USEPA
Aluminum NESHAP
<=
span
style=3D'mso-special-format:bullet;color:#CCCC99;mso-color-index:2;positio=
n:
absolute;left:-4.76%;top:.39em;font-family:Wingdings;font-size:70%'>qDonna
Lee Jones, Ph.D.
U.S. Environmental Protection
Agency
Office of Air Quality Planni=
ng and
Standards
Metals & Minerals Group
(D243-02)
Research Triangle Park, NC 2=
7711
USA
(919) 541-5251 Fax (919) 541-3207
<=
span
style=3D'font-size:90%;visibility:hidden'>l
23
Other
Aluminum Industry Resourc=
es
qThe Aluminum Association, Inc. (AA)
<=
span
style=3D'font-size:58%;display:none'>
l The AA is the =
trade
association for producers of primary aluminum, recyclers and semi-fabricated aluminum products, a=
s well
as suppliers to the
industry.
l
l The AA provides
leadership to the industry through its programs and services which aim to enhance aluminum's position =
in a
world of proliferating mate=
rials,
increase its use as the "material of choice,“ remove impediments to its fullest use, and assist =
in
achieving the industr=
y's
environmental, societal, and economic objectives.
l
l Member companies operate about 200 plants in the U.S
and many conduct business
worldwide.
l
24
Other
Aluminum Industry Resourc=
es
qAir & Waste Management Association (A&WMA) http://www.awma.org
<=
span
style=3D'font-size:65%;visibility:hidden'>l
The A&WMA is a nonprofit,
nonpartisan professional organization
that provides training, information, and networking opportunities to thousands of environme=
ntal professionals in 65 countries.
<=
span
style=3D'font-size:71%;visibility:hidden'>l
<=
span
style=3D'visibility:hidden'>l
<=
span
style=3D'visibility:hidden'>l
25
USEPA Plain Langua= ge Guide to the
Primary Aluminum N= ESHAP (EPA-453/R-99-011)
http://www.epa.gov/ttn/atw/alum= /alumpg.html
=
lCHAPTER 1 - Introduction
=
lWhy should I use this document? 1
=
lIs there anything I should know before using this
document? 1
=
=
lHow do I get copies of this document? 1
=
lWe want your feedback 2
=
l
=
lCHAPTER 2 - What this rule covers - An Overview=
=
lWhy was this rule written? 4
=
lHow do I know if I’m subject to this rule? 4
=
lAre any processes exempt? 4
=
lHow do I know if I have an affected source? 4
=
lWhat are my requirements for affected sources? 5
=
lWhen do I need to comply? 5
=
lWhat pollutants am I emitting? 5
=
l
=
l
l
26
USEPA
Plain Language Guide to the
Primary Aluminum NESHAP (contin= ued)
Primary Aluminum NESHAP (contin= ued)
=
lCHAPTER 3 - Complying with requirements for
potlines
=
lWhat do the potline sections of the rule cover? 9
=
lWhat is exempt under these sections of the rule? 9
=
lDo I have any compliance options? 9
=
lWhat emission limits must I meet? 10
=
lWhat monitoring must I do? 12
=
lWhat records must I keep? 12
=
lWhat plans and reports must I prepare? 13
=
lHow do I show compliance? 13
=
l
=
l
l
27
USEPA
Plain Language Guide to the
Primary Aluminum N= ESHAP (continued)
Primary Aluminum N= ESHAP (continued)
=
lCHAPTER 4 - Complying with requirements for ano=
de
bake furnaces
=
lWhat is covered under these sections of the rule?<=
span
style=3D'mso-tab-count:1;width:6.23%'> 25
=
lWhat is exempt&nb=
sp;
under these sections of the rule? 25
=
lDo I have any compliance options? 25
=
lWhat emission limits must I meet? 25
=
lWhat monitoring must I do? 26
=
lWhat records must I keep? 27
=
lWhat plans and reports must I prepare? 27
=
lHow do I show compliance? 27
=
l
28
USEPA
Plain Language Guide to the
Primary Aluminum N= ESHAP (continued)
Primary Aluminum N= ESHAP (continued)
=
lCHAPTER 5 - Complying with requirements for pas=
te
production plants
=
lWhat is covered under this section? 33
=
lWhat is exempt under this section? 33
=
lWhat are the requirements for paste production pla=
nts? 33
=
lDo I have any compliance options? 34
=
lWhat monitoring must I do? 34
=
lWhat records must I keep? 35
=
lWhat plans and reports must I prepare? 35
=
lHow do I show compliance? 35
=
l
=
l
29
USEPA
Plain Language Guide to the
Primary Aluminum N= ESHAP (continued)
Primary Aluminum N= ESHAP (continued)
=
lCHAPTER 6 - Complying with requirements for new=
pitch
storage tanks
=
lWhat is covered under this section? 39
=
lWhat is exempt under this section? 39
=
lWhat are the requirements? 39
=
lDo I have any compliance options? 39
=
lWhat monitoring must I do? 40
=
lWhat records must I keep? 40
=
lWhat plans and reports must I prepare? 40
=
lHow do I show compliance? 41
=
l
30
USEPA
Plain Language Guide to the
Primary Aluminum N= ESHAP (continued)
Primary Aluminum N= ESHAP (continued)
=
lCHAPTER 7 - Calculations, test methods, and
procedures
=
lWhat test methods do I use for TF and POM? 45
=
lHow do I get approval to use an alternative test m=
ethod? 46
=
lWhat are my requirements for conducting a performa=
nce
test? 46
lHow do I sample if I =
have
many stacks for a single control device or several control devices for a single process? 46
lWhat alternatives are there for
performance testing? 46=
lHow do I calculate my emissions=
when
I am using emission averaging?=
lHow do I calculate my emission =
limits
if I incorporate the NSPS into
l my subpart LL requirements? 47
lHow do I calculate my TF emissi=
ons if
I incorporate the NSPS into
l my subpart LL requirements? 48
lWhat procedures do I use for new
pitch storage tanks? 49=
l
l
31
USEPA
Plain Language Guide to the
Primary Aluminum N= ESHAP (continued)
Primary Aluminum N= ESHAP (continued)
=
lCHAPTER 8 - Plans, notifications, reports, and
requests for alternatives
=
lWhat is a site-specific test plan? 57
=
lWhat is a continuous parameter monitoring plan? 60
=
lWhat is an implementation plan for emissions avera=
ging? 60
=
lWhat is an engineering plan? 61
=
lWhat is a startup, shutdown and malfunction plan?<=
span
style=3D'mso-tab-count:1;width:4.88%'> 61
=
lWhat do I have to report and when? 62
=
lWhat alternatives are available and how do I reque=
st
one? 62
=
lCan I change the date my reports are due? 63
=
lWhere do I send my reports? 64
lIs there a time limit=
for
the regulatory authority to approve or deny my requests? 64
lAre example reporting forms
available? 65
=
l
32
USEPA
Plain Language Guide to the
Primary Aluminum N= ESHAP (continued)
Primary Aluminum N= ESHAP (continued)
CHAPTER
9 - Other requirements and information
Who
administers this regulation? <=
/span>88
Are
plants in Indian Country regulated by the State? 88
Do
I need a title V permit? 88
How
do I change my permit to include this rule? 89
What
portions of the General Provisions apply? 89
CHAPTER
10 - Getting additional help
Whom
can I ask for help? 90&=
#13;
Can
I get more information on the Web? 91
33
USEPA
Plain Language Guide to the
Primary Aluminum N= ESHAP (continued)
Primary Aluminum N= ESHAP (continued)
lCHAPTER 11- Supple=
mental
information for State or local agencies and =
Tribes
=
lHow many plants may need to meet the emission limi=
ts? 93
lHow much HAP emissions will the=
rule
reduce? 93
<=
/div>
------=_NextPart_01C719BD.EA6DDB90
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Content-Transfer-Encoding: quoted-printable
Content-Type: text/html; charset="us-ascii"
l
lAPPENDICES
=
lA - Subpart LL, Final Rule. 96
l Includes an index for the rule cross referenced to =
the
Federal Register notice =
by
page and column number as well as rule section numbering
=
lB - Description of the Process and Emission Points=
. 101
=
lC - Site-Specific Test Plan Outline. 111
l
<=
/div>
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PPTSld.location.replace(MHTMLPrefix+RemoveFilePrefixFromHref(obj.mSldHref=
))
else
PPTSld.location.replace(obj.mSldHref)
=09
if( IsFramesMode() ) {
UpdNavPane(); UpdOtlPane(); UpdNtsPane()
}
}
function GoToSld( href )
{
if( PPTSld.event ) PPTSld.event.cancelBubble=3Dtrue
GetHrefObj( GetSldNum(href) ).mVis=3D1
if (MHTMLPrefix !=3D "")
PPTSld.location.replace(MHTMLPrefix+RemoveFilePrefixFromHref(href))
else
PPTSld.location.replace(href)
}
function SldUpdated( id )
{
if( id =3D=3D GetHrefObj(gCurSld).mSldHref ) return
gPrevSld=3DgCurSld
gCurSld=3DGetSldNum(id)
if( IsFramesMode() ) {
UpdNavPane(); UpdOtlPane(); UpdNtsPane()
}
}
function PrevSldViewed(){ GoToSld( GetHrefObj(gPrevSld).mSldHref ) }
function HasPrevSld() { return ( gIsEndShow || ( gCurSld !=3D 1 && GetHrefO=
bj( gCurSld-1 ).mVis =3D=3D 1 )||( GetCurSldNum() > 1 ) ) }
function HasNextSld() { return (GetCurSldNum() !=3D GetNumSlds()) }
function CloseWindow() {
if( HideMenu() ) return;
=09
var event =3D PPTSld.event;
if( !IsFramesMode() && event && (event.keyCode=3D=3D27 || event.keyCode=3D=
=3D32 || event.type=3D=3D"click" ) )
window.close( self );
CatchNumKeys( self, event );
}
function Unload() { gIsEndShow=3D0; }
function SetupEndShow() {
gIsEndShow=3D1;
PPTSld.document.body.scroll=3D"no";
PPTSld.document.onkeypress=3DCloseWindow;
PPTSld.document.onclick=3DCloseWindow;
PPTSld.document.oncontextmenu=3D_CM;
}
function EndShow()
{
if( IsFramesMode() ) return
if( PPTSld.event ) PPTSld.event.cancelBubble=3Dtrue
doc=3DPPTSld.document
var dir =3D doc.body.dir
if( dir !=3D "rtl" ) dir =3D "ltr";
doc.open()
doc.writeln(' 0) {
PushSldList(sldList,fEnd);
gCurSld =3D 1;
}
else
if( PPTSld.event ) PPTSld.event.cancelBubble=3Dtrue
}
function PushSldList(arr,fEnd) {
var ii =3D gSldStack.length;
gSldStack[ii] =3D new SldList(arr,gCurSld,fEnd);
GoToSld( gSldStack[ii].mList[0].mSldHref );
}
function PopSldList() {
if (gSldStack[gSldStack.length-1].fEndShow)
EndShow()
else {
gCurSld =3D gSldStack[gSldStack.length-1].mCurSld;
gSldStack[gSldStack.length-1] =3D null;
gSldStack.length--;
var sldList =3D gSldStack[gSldStack.length-1];
GoToSld( sldList.mList[gCurSld - 1].mSldHref );
}
}
var custShowList=3Dnew Array();
/*********************************************
Navigation button implementation
There are 2 types of buttons: ImgBtn, TxtBtn
implemented as function objects. They share
a similiar interface so the event handlers
can call SetActive, for example, on a button=20
object without needing to know exactly=20
what type of button it is.
**********************************************/
//----------------------------------
function ImgBtn( oId,bId,w,action )
//----------------------------------
{
var t=3Dthis
t.Perform =3D _IBP
t.SetActive =3D _IBSetA
t.SetInactive=3D _IBSetI
t.SetPressed =3D _IBSetP
t.SetDisabled=3D _IBSetD
t.Enabled =3D _IBSetE
t.ChangeIcon =3D null
t.UserAction =3D action
t.ChgState =3D _IBUI
t.mObjId =3D oId
t.mBorderId=3D bId
t.mWidth =3D w
t.mIsOn =3D t.mCurState =3D 0
}
function _IBSetA()
{
if( this.mIsOn ) {
obj=3Dthis.ChgState( gHiliteClr,gShadowClr,2 )
obj.style.posTop=3D0
}
}
function _IBSetI()
{
if( this.mIsOn ) {
obj=3Dthis.ChgState( gFaceClr,gFaceClr,1 )
obj.style.posTop=3D0=20
}
}
function _IBSetP()
{
if( this.mIsOn ) {
obj=3Dthis.ChgState( gShadowClr,gHiliteClr,2 )
obj.style.posLeft+=3D1; obj.style.posTop+=3D1
}
}
function _IBSetD()
{ =20
obj=3Dthis.ChgState( gFaceClr,gFaceClr,0 )
obj.style.posTop=3D0=20
}
function _IBSetE( state )
{
var t=3Dthis
GetObj( t.mBorderId ).style.visibility=3D"visible"
if( state !=3D t.mIsOn ) {
t.mIsOn=3Dstate
if( state )
t.SetInactive()
else
t.SetDisabled()
}
}
function _IBP()
{
var t=3Dthis
if( t.mIsOn ) {
if( t.UserAction !=3D null )
t.UserAction()
if( t.ChangeIcon ) {
obj=3DGetObj(t.mObjId)
if( t.ChangeIcon() )
obj.style.posLeft=3Dobj.style.posLeft+(t.mCurState-4)*t.mWidth
else
obj.style.posLeft=3Dobj.style.posLeft+(t.mCurState-0)*t.mWidth
}
t.SetActive()
} =20
}
function _IBUI( clr1,clr2,nextState )
{
var t=3Dthis
SetBorder( GetObj( t.mBorderId ),clr1,clr2 )
obj=3DGetObj( t.mObjId )
obj.style.posLeft=3Dobj.style.posLeft+(t.mCurState-nextState)*t.mWidth-obj=
.style.posTop
t.mCurState=3DnextState
return obj
}
//-----------------------------------------
function TxtBtn( oId,oeId,action,chkState )
//-----------------------------------------
{
var t=3Dthis
t.Perform =3D _TBP
t.SetActive =3D _TBSetA
t.SetInactive=3D _TBSetI
t.SetPressed =3D _TBSetP
t.SetDisabled=3D _TBSetD
t.SetEnabled =3D _TBSetE
t.GetState =3D chkState
t.UserAction =3D action
t.ChgState =3D _TBUI
t.mObjId =3D oId
t.m_elementsId=3D oeId
t.mIsOn =3D 1
}
function _TBSetA()
{
var t=3Dthis
if( t.mIsOn && !t.GetState() )
t.ChgState( gHiliteClr,gShadowClr,0,0 )
}
function _TBSetI()
{
var t=3Dthis
if( t.mIsOn && !t.GetState() )
t.ChgState( gFaceClr,gFaceClr,0,0 )
}
function _TBSetP()
{
if( this.mIsOn )
this.ChgState( gShadowClr,gHiliteClr,1,1 )
}
function _TBSetD()
{ =20
this.ChgState( gFaceClr,gFaceClr,0,0 )
this.mIsOn =3D 0
}
function _TBSetE()
{
var t=3Dthis
if( !t.GetState() )
t.ChgState( gFaceClr,gFaceClr,0,0 )
else
t.ChgState( gShadowClr,gHiliteClr,1,1 )
t.mIsOn =3D 1
}
function _TBP()
{
var t=3Dthis
if( t.mIsOn ) {=20
if( t.UserAction !=3D null )
t.UserAction()
if( !t.GetState )
return
if( t.GetState() )
t.SetPressed()
else
t.SetActive()
} =20
}
function _TBUI( clr1,clr2,lOffset,tOffset )
{
SetBorder( GetObj( this.mObjId ),clr1,clr2 )
Offset( GetObj( this.m_elementsId ),lOffset,tOffset )
}
function Offset( obj, top, left ){ obj.style.top=3Dtop; obj.style.left=3Dle=
ft }
function SetBorder( obj, upperLeft, lowerRight )
{
s=3Dobj.style;
s.borderStyle =3D "solid"
s.borderWidth =3D 1=20
s.borderLeftColor =3D s.borderTopColor =3D upperLeft
s.borderBottomColor=3D s.borderRightColor =3D lowerRight
}
function GetBtnObj(){ return gBtnArr[window.event.srcElement.id] }
function BtnOnOver(){ b=3DGetBtnObj(); if( b !=3D null ) b.SetActive() }
function BtnOnDown(){ b=3DGetBtnObj(); if( b !=3D null ) b.SetPressed() }
function BtnOnOut(){ b=3DGetBtnObj(); if( b !=3D null ) b.SetInactive() }
function BtnOnUp()
{
b=3DGetBtnObj()
if( b !=3D null )
b.Perform()
else
Upd()
}
function GetNtsState(){ return parent.gNtsOpen }
function GetOtlState(){ return parent.gOtlOpen }
function GetOtlTxtState(){ return parent.gOtlTxtExp }
function NtsBtnSetFlag( fVal )
{
s=3Ddocument.all.item( this.m_flagId ).style
s.display=3D"none"
if( fVal )
s.display=3D""
else
s.display=3D"none"
}
function _BSetA_Border(){ b =3D gBtnArr[this.mObjId]; if( b !=3D null ) b.S=
etActive() }
function _BSetI_Border(){ b =3D gBtnArr[this.mObjId]; if( b !=3D null ) b.S=
etInactive() }
function _BSetP_Border(){ b =3D gBtnArr[this.mObjId]; if( b !=3D null ) b.S=
etPressed() }
function _BSetA_BorderImg()
{=20
b =3D gBtnArr[this.mBorderId]=20
if( b !=3D null && this.mIsOn && !b.GetState() ) {
obj=3Dthis.ChgState( gHiliteClr,gShadowClr,2 )
obj.style.posTop=3D0
}
}
function _BSetI_BorderImg()
{=20
b =3D gBtnArr[this.mBorderId]
if( b !=3D null && this.mIsOn && !b.GetState() ) {
obj=3Dthis.ChgState( gFaceClr,gFaceClr,1 )
obj.style.posTop=3D0
}
}
var gHiliteClr=3D"THREEDHIGHLIGHT",gShadowClr=3D"THREEDSHADOW",gFaceClr=3D"=
THREEDFACE"
var gBtnArr =3D new Array()
gBtnArr["nb_otl"] =3D new TxtBtn( "nb_otl","nb_otlElem",parent.ToggleOtlPan=
e,GetOtlState )
gBtnArr["nb_otlElem"] =3D new TxtBtn( "nb_otl","nb_otlElem",parent.ToggleOt=
lPane,GetOtlState )
gBtnArr["nb_nts"] =3D new ImgBtn( "nb_nts","nb_ntsBorder",10,parent.ToggleN=
tsPane )
gBtnArr["nb_nts"].SetActive =3D _BSetA_BorderImg;
gBtnArr["nb_nts"].SetInactive =3D _BSetI_BorderImg;
gBtnArr["nb_ntsBorder"] =3D new TxtBtn( "nb_ntsBorder","nb_ntsElem",parent.=
ToggleNtsPane,GetNtsState )
gBtnArr["nb_ntsElem"] =3D new TxtBtn( "nb_ntsBorder","nb_ntsElem",parent.To=
ggleNtsPane,GetNtsState )
gBtnArr["nb_prevBorder"] =3D gBtnArr["nb_prev"]=3D new ImgBtn( "nb_prev","n=
b_prevBorder",30,parent.GoToPrevSld )
gBtnArr["nb_nextBorder"] =3D gBtnArr["nb_next"]=3D new ImgBtn( "nb_next","n=
b_nextBorder",30,parent.GoToNextSld )
gBtnArr["nb_sldshw"]=3D new ImgBtn( "nb_sldshw","nb_sldshwBorder",18,parent=
.FullScreen )
gBtnArr["nb_sldshwBorder"] =3D new TxtBtn( "nb_sldshw","nb_sldshwBorder",pa=
rent.FullScreen,null )
gBtnArr["nb_sldshwBorder"].SetActive =3D _BSetA_Border;
gBtnArr["nb_sldshwBorder"].SetInactive =3D _BSetI_Border;
gBtnArr["nb_sldshwText"] =3D new TxtBtn( "nb_sldshw","nb_sldshwText",parent=
.FullScreen,null )
gBtnArr["nb_sldshwText"].SetActive =3D _BSetA_Border;
gBtnArr["nb_sldshwText"].SetInactive =3D _BSetI_Border;
gBtnArr["nb_voice"] =3D gBtnArr["nb_voiceBorder"] =3D new ImgBtn( "nb_voice=
","nb_voiceBorder",18,parent.ToggleVNarration )
gBtnArr["nb_otlTxtBorder"] =3D gBtnArr["nb_otlTxt"]=3D new ImgBtn( "nb_otlT=
xt","nb_otlTxtBorder",23,parent.ToggleOtlText )
gBtnArr["nb_ntsBorder"].m_flagId=3D "nb_nts"
gBtnArr["nb_ntsBorder"].SetFlag =3D NtsBtnSetFlag
gBtnArr["nb_otlTxt"].ChangeIcon=3D GetOtlTxtState
/*********************************************
Context menu implementation
_CM() is the function that's hooked up to
the oncontextmenu event. Once we're asked to
show the menu, we first build it by creating
DIVs on-the-fly. Then we position it=20
within the screen area so it doesn't get
clipped.
Creating the DIVs using createElement() means
we don't have to write out any extra HTML
into the slide HTML files.
**********************************************/
var sNext=3D"Next",sPrev=3D"Previous",sEnd=3D"End Show",sFont=3D"Arial",sAr=
row=3D"Arrow",sFreeform=3D"Freeform",sRect=3D"Rectangle",sOval=3D"Oval"
function ShowMenu()
{
BuildMenu();
var doc=3DPPTSld.document.body,x=3DPPTSld.event.clientX+doc.scrollLeft,y=
=3DPPTSld.event.clientY+doc.scrollTop
m =3D PPTSld.document.all.item("ctxtmenu")
m.style.pixelLeft=3Dx
if( (x+m.scrollWidth > doc.clientWidth)&&(x-m.scrollWidth > 0) )
m.style.pixelLeft=3Dx-m.scrollWidth
m.style.pixelTop=3Dy
if( (y+m.scrollHeight > doc.clientHeight)&&(y-m.scrollHeight > 0) )
m.style.pixelTop=3Dy-m.scrollHeight
m.style.display=3D""
}
function _CM()
{
if( !parent.IsFullScrMode() ) return;
if(!PPTSld.event.ctrlKey) {
ShowMenu()
return false
} else
HideMenu()
}
function BuildMenu()
{
if( PPTSld.document.all.item("ctxtmenu") ) return
var mObj=3DCreateItem( PPTSld.document.body )
mObj.id=3D"ctxtmenu"
mObj.style.visibility=3D"hidden"
var s=3DmObj.style
s.position=3D"absolute"
s.cursor=3D"default"
s.width=3D"120px"
SetCMBorder(mObj,"menu","black")
var iObj=3DCreateItem( mObj )
SetCMBorder( iObj, "threedhighlight","threedshadow" )
iObj.style.padding=3D2
CreateMenuItem( iObj,sNext,M_GoNextSld,M_True )
CreateMenuItem( iObj,sPrev,M_GoPrevSld,M_HasPrevSld )
=09
CreateSeparator( iObj )
CreateMenuItem( iObj,sEnd,M_End,M_True )
mObj.style.visibility=3D"visible"
}
function Cancel() { window.event.cancelBubble=3Dtrue; window.event.returnVa=
lue=3Dfalse }
function Highlight() { ChangeClr("activecaption","threedhighlight") }
function Deselect() { ChangeClr("threedface","menutext") }
function Perform()
{
e=3DPPTSld.event.srcElement
if( e.type=3D=3D"menuitem" && e.IsActive() )
e.Action()
else
PPTSld.event.cancelBubble=3Dtrue
}
function ChangeClr( bg,clr )
{
e=3DPPTSld.event.srcElement
if( e.type=3D=3D"menuitem" && e.IsActive() ) {
e.style.backgroundColor=3Dbg
e.style.color=3Dclr
}
}
function M_HasPrevSld() { return( parent.HasPrevSld() ) }
function M_GoNextSld() { if( gIsEndShow ) M_End(); else GoToNextSld() }
function M_GoPrevSld() { if( gIsEndShow ) { gIsEndShow=3D0; history.back();=
PPTSld.event.cancelBubble=3Dtrue; } else GoToPrevSld() }
function M_True() { return true }
function M_End() { window.close( self ) }
function CreateMenuItem( node,text,action,eval )
{
var e=3DCreateItem( node )
e.type=3D"menuitem"
e.Action=3Daction
e.IsActive=3Deval
e.innerHTML=3Dtext
if( !e.IsActive() )
e.style.color=3D"threedshadow"
e.onclick=3DPerform
e.onmouseover=3DHighlight
e.onmouseout=3DDeselect
s=3De.style;
s.fontFamily=3DsFont
s.fontSize=3D"9pt"
s.paddingLeft=3D2
}
function CreateSeparator( node )
{
var sObj=3DCreateItem( node )
SetCMBorder(sObj,"menu","menu")
var s=3DsObj.style
s.borderTopColor=3D"threedshadow"
s.borderBottomColor=3D"threedhighlight"
s.height=3D1
s.fontSize=3D"0px"
}
function CreateItem( node )
{
var elem=3DPPTSld.document.createElement("DIV")
node.insertBefore( elem )
return elem
}
function SetCMBorder( o,ltClr,rbClr )
{
var s=3Do.style
s.backgroundColor=3D"menu"
s.borderStyle=3D"solid"
s.borderWidth=3D1
s.borderColor=3DltClr+" "+rbClr+" "+rbClr+" "+ltClr
}
------=_NextPart_01C719BD.EA6DDB90
Content-Location: file:///C:/5409C636/EPA_Aluminum_Smelting_2006_files/fullscreen.htm
Content-Transfer-Encoding: quoted-printable
Content-Type: text/html; charset="us-ascii"
Slide 1
------=_NextPart_01C719BD.EA6DDB90--
<=
/div>
------=_NextPart_01C719BD.EA6DDB90
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