ML20205L018
| ML20205L018 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 02/27/1987 |
| From: | TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | |
| Shared Package | |
| ML20205K766 | List: |
| References | |
| QI-QP-11.0-6, NUDOCS 8704020097 | |
| Download: ML20205L018 (15) | |
Text
_ _ _ _ _
_4
,/
j, p
q --
(.
r N
p.
TUGC0 INSTRUCTION
,m c
TEXAS UTILITIES GENERATING CO.
P-L 0-6 Rev. 10
\\
- CPSES -
JUL 3 01985
'1 Oc/V # /
pd#
INSPECTION Or cROUT:No DCC NO. 333 W"
yg yS DOCWCNTpg99
,, _,sue ; J fgs M u P!y,/ y APPROV D BY:
/
m.,.,,
e r u hurFJCnAmu x
A??ROVC 3Y:
/7
/./J S
Nd f
kh b y-s gr ~ = =
v
'q <
l.0 REFERENCE l-A 23:3-55-9, "Concrece" u
l-3 CC?-16, " Grouting Base Plates, Bearing Places and Equipment Bases" l-C QI-QP-ll.0-11. "Inspeccion of Cold Weather Concrece Operacions" 1-D QI-QP-ll.0-4, "Su==er Concrece or Morcar Curing Inspeccion" 4
COTROLLED COPY
=
,-a-13. 2,
- =s,eccior. Re' ""
l-F C?-QP-16.0, "Nonconformances" COHTRu-,., m...e o w i
'i L-3 QI-QP-ll.0-2, Reinforcing Sceal, Miscellaneous Steel and i
Embedded Ices Placesent Inspeccion" I
\\ 1.0 GC;ERAL 2.I PURPOSE i
This instruccion cuclines the mechods and criteria used to verify thac grout (fluid or d r,.'
pack) preplacement and placement confor=s to References 1-A and 1-3.
Post placement (curing) shall be per References 1-C and 1-0.
,c ' \\
s 2. 2 SCOPE This instruccion applies to che grouting of base places, bearing g
p places, loose lincels, equipmene bases, anchor bole pockets,
(
l corebores, and other items noted on the design drawings excepc
'c,
those which are pressure grouted using a commercial epoxy grout.
i 8704020097 870325
, f
{R ADOCK 05000445 PDR s
s
.y,
.s TUCCO INSTRUCTION
(N QI-QP-11.0-6 Rev. 10 TEXAS UTILITIES GENERATING CO.
P Page 1 of 9
- CPSES -
DEC 221986 INSPECTION OF GROUTING
. PREPARED BY:
See original page i for approvals DATE APPROVED BY:
See original page 1 for a provals DATE APPROVED'BY:
See original page 1 for approvals DATE 1.0 REFERENCE 1-A 2323-5S-9, " Concrete" 1-B CCP-16, Grouting Base Plates, Bearing Plates and Equipmaat Bases" 1-C QI-QP-11.0-11. " Inspection of Cold Weather Concrete Operations" i
1-D QI-QP-11.0-4, " Summer, Concrete or Mortar Curing Inspection" 1-E CP-QP-3.0, " Inspection Report" 1-F CP-QP-16.0, " Reporting Construction Deficiencies" l
1-G Q1-QP-11.0-2, " Reinforcing Steel, Miscellaneous Steel and Embedded Item Placement Inspection"
..i 2.0 CENERAL I
.a 2.1 PURPOSE
. tb i ' ' L a
This instruction outlines the methods and criteria used to verify that grout (fluid or dry pack) preplacement and placement conforms to References 1-A and 1-B.
Post placement (curing) shall be per References 1-C cud 1-D.
- 2. T SCOPE I
This instruction applies to the grouting of base plates, bearing plates, loose lintels, equipment bases, anchor bolt pockets, f 'g corebores, and other items noted on the design drawings e:< cept
(_,)
,those which are pressure grouted using a commercial epoxy grout.
QI-QP-11.0-6, Rev. 10, DCN #1'
.o i
9
_,.. L. _. _ __ _
..._...c.....
....__u....
- r...
6 e s s
~
\\
J i,
DOCUMENT CHANGE NOTICE gf. 0,. :. _
- W : ~' Y...
'A.*
. 13 'sl:,:,
Y h,j. h *y fi,f,f.*f5$
No.-
3
~
Page
/
of 1.
Proc./ Inst. No.@lF// O-fo Rev.
/0 Change' Proposed By.Neill Britton 2.
The following change /rgvision is reconnended.
Description of proposed change (s) To provide criteria for inspection a.
2 of damage to reinforcing bars which are nicked or gouged during
't.
chipping or drilling activities.
(See page 2 for actual changes) b.
Justification for chang'e(s)
Ref. DCA-25598 in which Engineering has established an inspection criteria for identification and repair of nicks and gouges on reinforcing bar.
In addition, disposition of reinforcing bars that exhibit are strikes is also required.
c.
List other procedures / instructions af f ected by change (s)
OI-0P-11.0- 6 Construction Procedures:
QI-QP-11.0-2 CCP-12 CP-QP-11.2 CCP-16 t-r MT -m ; cn MPY CE1-20 y:,,,..... - -
C0iii;ei.ii0. 3 /M M 3.
Approval:
QC Supercisor
/ ud /4/
M7//'7 r
QE Supervisor
[
//,,M M2 7-M i
QC Manager, Sit 2,27-h 2 e
r
-4 3
g
,,Pc~ s e. p opy Aepicce AHauirneuf I s.
r9Hschmed
$~
I QCA)$ 3 Q('
icco~n w, n m ze add.
~
s I! ch1Re Qcus& gne/aerry Ate / areas edhicA beee-reciesed suraca pays,ew m he & o P dup;any deM/my' 4 de/e,ma -Me-F emAedd' ad raArc,y
.or M base af recieued c/er, cme.L%m bars ducA haux <ecaued d a xege Gr incu eqonda29' k 24 l
r abh 7cmded +hd Ane resu/Juu3 clepassmin&. body o 0 lbe bar cf<s no&.eycs.ed he,0 Eswwy 0
A. depM o S' dsrnm-e-5en &9j/a xey/aec c'p#t ol' ekietyec e
$ws 'to-s/8 triaviava <bp/r O
cc n,cz k l
46,4 1: 1% bd ss An 6+- ma' t' 6e hen 1 y
es Me ps<+o el' the bar -etc/us o / /ke & nk.
? S /l$4 j h4
% Wl$<
O f(4 c/-a,mye. cr,Jce a s n s // /ia e-e sigr p
-fhe s or pr 0)'eCket~-6-f=WrifNed ~4td twnb
-ed ly yindry v,0/9 alcx3 /ke so< Ace o/w body or m-n O
@!L V "8"<" sf"om9 M <*k W ~#~!"
k< <sk as are s/,iecs. nec siritc-s amt ress!
su ns,a$vwc.e.1-F.
a w,-w,s 3cce<cl-socx wds-rt P
..m_-_____
.. l
,.t.
\\
x DOC 1DGNT CHANGE NOTICE o.
i No.
2 Page
/ of
/
1.
Proc./ Inst. No. Afdk() 6 6 Rev.
la Change' Proposed By ff IfEd/2.T 2.
The following change /rgvision is recomunended.
Descrirtien of treresed cha ec's'. -[//A44 f/f/224.Ild /; [ f o a.
LADt[ [L? Ib,0 'kiPbl?ilA1% bus 1YL6LTied OfflCICaliES" b.
Justification for chang *e(s) [ hah IL.[\\
[2d V.
(
enmv s
Dv
. n L.'
ije e
bb)ii
- C.
In vt O,?N O
m b **
- =
- =*
k's!M 3.
Approval:
QC Su p e re:Lscr /
fw /t}
/t/)lfy
~
/
f /
AJ,,tfd n.kh.
,i ban-:u r
/_z -tg-z<1 v.-
^
T ~~~
l.'.C~
., x..,""~ ~ ~
" ~ ~ ~ ' ' ~ ~
t.
n.
~
.. - :.m,~g-(
DOCUMENT CHANGE NOTICE No.
1 Page 1
of 1 1.
Proc./ Inst. No. OI-OP-11.0-6 Rev.
10 Change Proposed By N. Britton 2.
The following change / revision is recommended, a.
Description of proposed change (s) Delete:
3.1.1(b) Base and bearine olates are set to proper erade. level and alizned per desien document. Delete:
Item 2 on Attachment 1.
b.
Justification for change (s) terification of the above criteria is not the responsibility of the Civil OC Inspector. It is the resnonsibility of the discioline Inseector to verify the appli-cable attributes for location.
(Reference Non_-ASME Procedures OI-OP-il.3-38. OI-OP-11.8-5. OI-OP-11.10-1. OI-OP-11.10-1A. OI-OP-11.10-2, QI-QP-il.10-2A, QI-QP-11.10-7, QI-QP-11.10-9, QI-QP-il,14-1, and ASME procedure QI-QAP-ll.1-28.)
c.
List other procedures / instructions affected by change (s) 1 cnNTRni1ED COPY CON fROL !10.9 un 3.
Approval:
p C Supervisor 9/[ %
!s
[
M QE Supervisor
/
9e EC T]
QC Manager, Site 9,/ 2 &
y.
1 ul
~
.. ~.
- ~,
s = tai
~ ~, * ~.2 TUGC0 INSTRUCTION
[] TEXAS UTILITIES GENERATING CO.
g>-
QI-QP-11.0-6 Rev. 10 V
S ",
Page 2 of 9*
- CPSES -
s MAR 0 21987 3.0 INSTRUCTION 3.1 INSPECTION CRITERIA 3.1.1 Preplacement Inspection The following attributes will be verified prior to all grout placement:
NOTE:
For dry pack grouting method, pre-placement monitoring of items included in Paragraph 3.1.2.2.c.3 is required in addition to the following attributes.
a.
Surfaces to receive grout are free of oil, grease, loose concrete and faltance.
b.
Forms securely anchored and of sufficient height.
c.
Wedges and shims are cut.off flush with outside edge of plates or as otherwise specified by design document (s).
d.
Core bore correct in size and location.
e.
Exposed rebar has 1" clearance (outside' layer).
f.
The QC Inspector shall verify if rebar is cut, the rebar cutting performed is in accordance with the Design Change Authorization.
The QC Inspector shall sign-off accordingly on the Construction Operational Traveler.
g.
The QC Inspector shall verify that areas which have received surface preparation in the form of chipping or drilling to determine that embedded reinforcing bars have not received damage.
Reinforcing bars which have received damage (i.e., nicks', gouges) may be acceptable provided that the resulting depression in the body of the bar does not exceed the follovir.g:
1.
depth of damage - Bars #6 - #9 maximum depth of damaged area 1/8".
Bars #10 - #18 maximum depth of damaged area 3/16".
O QI-QP-11.0-6, Rev. 10, DCN #3 b
i
_,.,,~.;
.,s..,7
~ ~.
TUCCO INSTRUCTION TEXAS UTILITIES GENERATING CO.
P QI-QP-11.0-6 Rev. 10
~d Page 2a Of 9 3
j
(
- CPSES -
-N MAR 0 21987 The body of 'he bar shall be taken as NOTE 1:
t the portion of the bar exclusive of the ribs.
NOTE 2:
Bars meeting the above mentioned damage criteria shall have sharp edges or proj ections removed and rounded by grounded or filing along the surface of the body of the bar.
h.
The QC Inspector shall verify that embedded reinforcing bar is free of are strikes.
Arc strikes shall be reported in accordance with Reference 1-F.
i.
Concrete surfaces to be grouted shall be kept wet and excess water shall be removed prior to placement.
Where fluid commercial grout is to be used, either the surface shall be pre-wetted in accordance with manufacturer's recommendations or a bonding agent shall be applied.
J.
For dry pack
- grout, a
bonding
- agent, such as "welderete" or a water / cement slurry shall be used.
k.
Area to be grouted is vibration free.
O QI-QP-11.0-6, Rev. 10, DCN #3
n.u
, e n.
3, e
TUGC0 INSTRUCTION (Vg) TEXAS UTILITIES GENERATING CO.
P QI-QP-11.0-6 Rev. 10 4
Page 3 of 9
(
- CPSES -
MAR 0 21937 1.
Vent holes, installed to allow escape of trapped air, are approved.by Engineering.
m.
Grout card sign-off by
n.
k' hen grouting, per this procedure, involves the addicion of miscellaneous steel items (anchor bolts, reinforcing steel dowels, etc.) to existing structures, verification of the added embedded items shall be accompished in accordance with Reference 1-G.
3.1.2 Placement Inspection Placement inspection of dry pack grouting method will be performed a minimum of once per week.
Fluid grout placement inspection will be performed every time fluid grout is placed.
)
3.1.2.1 Bonding Agent v
L' hen a water / cement slurr'y is used as an alternative to "welderete" for dry pack or grout, verify the following.
After mixing the water / cement slurry, the mixture shall be the consistency of cream.
The area to be grouted and the area 6 inches wide surrounding the item to be dry packed or grouted shall be prewetted.
The water / cement slurry shall be brushed into the surface.
khen the slurry begins to lose its water sheen, dry pack or grout may be applied to the area.
3.1.2.2 Mixing The proportion of materials, temperature and mixing requirements are in accordance with the following:
a.
Master Flow 713 and Embeco 636 Grout The following items shall be' monitored by the QC Inspector:
1.
Surface temperature shall be 45'F - 100*F.
2.
The temperature of the grout after mixing shall be 45'F - 70*F.
3.
Mixing water shall not exceed 80*F.
w/
QI-QP-11.0-6, Rev. 10, DCN #3
J.- -
[
,.K.., :).. n 1..,,
y, 2 ',
.o IUGC0 INSTRUCTION p
TEXAS UTILITIES GENERATING CO.
g QI-QP-11.0-6 Rev. 10 s
Page 4 oc, 9
(
- CPSES -
~-
JUL 3 01985 9
4.
After mixing is complete, grour shall be placed v1. chin 10 min. or shall be discarded.
b.
Gifford-Hill Supreme and Supre=e Plus Greut The following ite=s shall be monitored by the QC Inspector:
1.
Surface te=perature shall be 50*F - 100*F.
2.
The temperature of the grout after mixing shall be 50*F - 90*F.
3.
Mixing water shall not exceed 95*F.
4 After mining is complete, grout shall be placed within 15 to 20 min. or shall be s
discarded.
c.
Dry Pack Grout (General Purpose)
The following ite=s shall be conitored by the QC Inspector:
Surface ce:pera ure shall be 50*? - 5G*?
(General Purpose).
100*?
I 2.
Surface ce rerature shall be 50*?
(Giff:rd Eil_,.
i 3.
The dry pack method can be used provided:
a.
Width of the base place is 36" or less.
b.
The gap between the concrete is h" or greater.
c.
The dry pack method for use under baseplaces shall be utilized on horiconcal surfaces only.
i 4
Drv pack (General Purpose) shall be =ade up of 1 ;iarc cement to 2 parts sand, or richer in cement content.
A minimum of 1.part sand shall be present.
O 1
~
..t
_._u._..._..
'.G i '
- s..~. :.,
- ,;. ;:p (:'., ~} ; & ",
.7 4;
1 TUCCO INSTRUCTION (3' TEXAS UTILITIES GENERATING CO.
QI-QP-11.0-6 Rev. 10
)
Page 5 of 9
)
i
- CPSES -
JUL 3 01985
~
5.
Dry pack si:cture 1s of such a consistency that when a sample is-squeezed in the hand, only enough vater will come to the surface to moisten the hand, and - it will retain its shape upon release.
3.1.2.3 Consolidation l
The QC Inspector shall verify grout camped, rodded, strapped or spaded for proper consolidation.
3.1.2.4 Test Samples l
The QC Inspector shall verify that required test sa=ples have l
been taken by TUGC0 Lab. Does not apply to d y pack grout.
3.1.3 Post-Placsment Insoection
)
Curing inspections are in.accordance with References 1-C or 1-D.
3.2 DOCUPSiTATION Preplacement and placement inspections of grout (dry pack or fluid) shall be docu=ented on an Inspection Raport per A::ach=ents 1 and 2.
Inspecticn reports to be procassed :.n accordance with Reference 1-E.
3.2 NONCON?CF_v_CCES Nonconforming conditions shall be reported in accordance with Reference 1-F.
1
.i"**,
__1
,v
- y.,.
- u... : 2 -.. ~
. ~..
. w e
TUGC0 INSTRUCTION ex (V) TEXAS UTILITIES GENERATING CO.N QI-QP-11.0-6 Rev. 10 Page 6 of 9
/.
\\
- CPSES -
MAR 0 21987 ATTACHMENT 1 C."CC.*E PEAK STEM I !CT2tC STATION INSPECTION REPORT sqi n.
2
'i*.itcitir:en
.;Dr;;;;A:;;s 4
,sr; i. f rwC:.pt ;g;;;;.a:;;n
=
e Creut Pre-Placement 3
9
- i 0. 4.
4E!.
aEF.3.0. XC. & a(v. n ;%%& 4.
- (ii.RC 04 !E;I (; yip. ;;D!. %.
6l 01-CP-t t.0-6 Rev.
- s pecct:1
-" at.ssrauar:On
" :sstat t;::s
~ r:m
' nt ts;
- ssatt :Cm M!F:CAf!CN
~ Its7tCT!3
~ M57ti!!$1
~ !a17t;? 0 59' It XS
[ v.at: ::.. ;;-8,5":
am.;c;&it :7t=1 117;:74?:2' g y.a;;.a A+;
~.118!:*::1 ::=$.i*
.W::;7ac":2' ;!Di. ;!I: ;t.;.
i ; i tit.n m.
INSPECTION ATTRIBUTES l M. 3I carf stp'act O
El 11 m
I O Fluid Drv Pack (Check One) l
' l (vt 1.l surf aces to receive grout are free of oil, grease, loose I I i 1 I l l
concrete and laitance.
l l l l
vv) 2.I Forms securelv anenored and of sufficient he igh t.
l ! l l
i l l v
(v) 3.
Wednes and shiise are eut off flush with outside edge of l l plate or as othe'rwise specified by design document (s).
i l l I I I
! i l l
(V)
!..! Core bore correct size and location.
l 1 (V) 5.
Exposed rebar has t
clearance (outside layer).
l l l l iV) 6.
If rebar is cut, verify cuttine was perforined in accor-l \\
l l $
l I
40**e with Desitn Chance Authorization.
! List:
I l l l
1 1 I I
'I tehir k u ".s t receive d li-ne due to chippina or drillint } k !
tV) l I i (V) 6.
eebar is free of are strikes.
I i i I (V) 9.l Sign-of f on Construction Operation Traveler used for
! I I l
I cere drilling activitv.
l I t l
8 I
(V) 10.
ccccrete surface to be trouted is kept continously wet I and excess water removed prior to placement.
I i
I i
I it.! senmz nent seeltea for dry pick or creut.
m
' l I
l
,,,r.
hmI (continued ca Page 2) celot 3/s7 a
QI-QP-11.0-6, Rev. 10, DCN #3
^~"'
.'a;
...+.c,
-....... - ~..
s l
TUGC0 INSTRUCTION QI-QP-11.0-6 Rev. 10 g(j TEXAS UTILITIES GENERATING CO.
P Page 7 of 9 3
/
- CPSES -
N MAR 0 21987 ATTACHMENT 1 (Cont.)
CC"ANC:iE PEAK STEAM ELECTRIC STATICM (supptExtNTat) sactts:e FOR FULL HEADINGS. SEE SHEET 1 80.
l I
(f!M j
SAFE l 5tGaafJg 3
l l
fv1 12.
tr. rn h, o rni, r,d fu vibracion free.
I i l l
l e,
n
_,.,,s,.s.
-,, t r a, -, i, x.
s.
,5
.,-a,,r approved by the Engineer.
l List:
l (V) 14 Grout Card signed off.
]
)
J I
4 et gu l - (:IWG5. $ Pit $. (TC.)
Traveler haber of core activit:
4 0
l l
e 3,g
)
l i.Aiia o e.
!.R. CLCSEC O
l l
.,,m..,..
C6/01 3/87 bD QI-QP-11.0-6, Rev. 10, DCN #3 1
I
)
y%
'y
/ l..:y s.3.
., w I
I 1
' jm TUGC0 INSTRUCTION TEXAS UTILITIES GENERATING CO.
+> ', (
QI-QP-11.0-6 Rev. 10 Page 8 or,9
- CPSES -
JUL 3 01985 A...n. m.,b.-.
a.
..... r*.=;.........;.....
.. -.wg,
.-.;;g
-< t -
- r -
1
..=; e.. r.... w ; : r.. r.:..
e 43 d ;;..#
19
. Ls ;.f.;4.'s ;9 *s.
a r. : s *. ' N " ".ai ;i;.; a;..s d
tt 07.C*wT ?!.bT..**
'JG.N.
.id
,J E F. ;. :. X: & a(v. 6 ;*AML
=0.
t e'..dk ;4
..J. 7..i = 4
- C.
er 41 ^ %39.!t.*.A.
?gy 4.
.. is::::;
- :st. n: s,. :.
- ,m.,ir::,
~ r :.u,
~ u t -,,-
- sg7t :::n
"" stilflG!!"4
- 91st:*;;9
- iist*?;;9
.s18t:* n
-MF
- tW ;
[
~ 'R:7t*itCm ::r*Mtit3. ALL 47%!G8tt ;?!?
- Af t: TAC * *R ?
t I
[ mrt:?:cm ::-stits. usur::nc::ar ::tn isit: it'.s
"# C '
Wi
. ;I*
-C.
.NI........:. 6.1 *.....e......
-e
.,. ;2;g e *....
.{.
M.fts I T_0'.; *13.c': IMII : 626 h
.OD Surface :st: era: re ;3. '00h
~
Ac:241 :e=s.
S e issterature of :he ; cu: af t er -M az -! ?
if?.
O!)
I I
'Mi 2.
.fxt:t vatar foes :: ex:se: If-Orcu: 21ated vi:ni: 10 :: utas after : xt:4 i
51..
i Excess trout diacaraed.
I i
1* )
f.
!!ixans saa a;3itca::sc a: ::e va:e: :::e:: a..r---
a I
I ac:enca'sle orior :o slacement of grou:.
l l
i i
l Gifford-ilill Suorose and Suoreme Plus I
1 j
CD 6.
1 Surfacs :emoerscure 50 - 100 7 Ac:u.21 :emo.
i
! t l
l i
CD
- l Be emoerature of :. e ;rou af:er =txis:; 50' - ?O -
i l
2 I
'M1 3.
".txts: va:er does ao: exceed ?! * ?
'M1 7.
- Orsut ? laces.rt
- :1: 13 - 20 sisu:es at:er txt:s.
I ?.xcess ; rout discarded.
i l
I
?
i I
(M) 10.
! 'ti=1:e and soolicacion of :he water / cement slurrv is gs I acceota'le orier to 012 cement of trouc.
i :
o I
i i
l Cant:nued on ?see :
i i
Co/0
- /83
r
. a %.,.: y..
.;s.T,
~
I TUGC0 INSTRUC~ ION p
TEXAS UTILITIES GENERATING CO.
QI-QP-11.0-6 Rev. 10
(,1
&(> 5.h j Page 9 of 9
- CPSES -
JUL 3 01985 ATTACEENT 2 (Cr.c.)
..oes ar :c.a..r..:p. c.1.r..c.
-..3 3
,r..,..tes.
[NSPECTICN REPORT
.x,.
3,,
I FOR FUL'. i!ACl.*;G*. IEE IAEi* 1 4-a
,. a l j l *.a*Il 1:iutat l
l x
Ifta I
I ORT PAC" I
l i
I
'M)
Lt. I Surf ace :e-teerature 30' - 90*? /C4-ersi ?ur-ose)
I l
I I
I I
l Actual Tem.
l IM)
L.!
Surface :e:sers:ure 30' - 100'7 (Ciffst:-4111) i t
i a :ual !aes.
I i
i l
lM)
- 13. I 3rv sact setnod is ac:estable vi:. regars :s dimen-I l I l
}
l ston and artencacian of ' aseolate.
l I !
l 1
iM)
Li. I Mixing ans asoliestion sf :Se vacer/ce=ent slurry is i
r i l
l I
ac:sstacle setor :s slace=ent af irv ;ack.
I I
i i
(M) !!. I After - m 74. Ar* sact is allowes to.resch the stiffest !
I !
l l
l constseencv that vill ser=1 slacement.
l I I l
I i
- r:n.e.
I i
j l
I i ;
I i
i
'M )
' 6. !
Grouc sreeeriv :ensolidated, l ! !
I k
!.s: rz-:.4
- e e n -
'!* * *.:: ::es -et
-- ~ - ::
I dr - sack treut).
l l
i l
l ! l l
1 I i l I
(
l t I l i
se.ms 6e.c.s. stc; Uc..
I i
\\
l l
... <. ~
m
,,m,e _
, I.
I.1. CLOI!3 y
l l
....m..-
l_
- ,
- n
-n