P. 1 

# OAR Box 1830 Prepped by Ollie Stewart



## Document

Number: 

# 17) IV-B-13 Docket Number: 

# A-87-1 1

Printed 11/13/20087:20:51 AM Sheet 17 of 232P.2



## NO V

## 2 2 !98 8 UNITE D STATE S ENVIRONMENTA L PROTECTIO N AGENC Y AN N ARBOR . MICHIGA N 4810 5 

# M-Q-13

OFFIC E O F AI R AN D RADIATIO N


### MEMORANDU

M SUBJECT :
FROM : Result s o f Rollove r Test s o n EPA"Simpl e System ' Onboar d Vapo r Vent/Rollove r Valv e Jean Schwendeman , Mechanica l Enginee r Standard s Developmen t an d Suppor t Branc h 

## ^<U^>ik ,
TO : THRU : Publi c Docket s A-87-1 1 an d A-85-2 1 Joh n F . Anderson , Senio r Projec t Manage r Standard s Developmen t an d Suppor t Branc h Cheste r J . France , Chie f Sv~>~ - Standard s Developmen t an d Suppor t Branc h

Prototyp e valve s wer e buil t for EP Ab yGT Product s o f An n Arbor , MI . GT Product s manufacture s curren t productio n valve s for variou s automobil e companie s including Ford Moto r Company . Thes e valve s mus t be abl e t o pas s the FMVS S 30 1 rollove r leakag e tes t foun

d in th

e Federa l Registe r (Vol . 40 , No . 200 ) an d specifi c manufacture r specification s relate d t o thi s test .P. 3



### The FMVS S rollove r tes t i s performe d on a n entir e vehicl e afte r i t ha s bee n throug h th e cras h portio n o f the tes t (Attachmen t 1) . The tes t require s tha t th e tan k be fille d fro

m9 0 t o 9 5 percen t o f capacit ywit h Stoddard solvent . The vehicl e i s rotate d fro

m0 ° t o 270 ° a t a rat e o f 1 t o 3 minute s for eac h 90 ° o f rotatio n wit h a 5 minut e hol d a t eac h 90 ° increment . The requirement s stat e tha t leakag e fro mth e entir e vehicl e shal l be les s than 5 ounce s b yweigh t o f stoddard solven t during th

e firs t 5 minute s o f testing a t eac h 90 ° incremen t an d les s than on e ounc e pe r minut e during the remaining tim e a t tha t increment . Thi s on e ounc e pe r minut e averag e requiremen t i s equa l t o approximatel y2 0 cubi c centimeter s (cc ) o f solven t fro mth e entir e vehicle . Sinc e th e rollove r valv e i s onl yon e o f the component s whic h coul d contribut e t o overal l leakage , Ford set s it s ow

n specificatio n fo r thi s par t a t 4 c c pe r minute . GT Product s test s th e valve s the

yproduc e for For d b y mounting the

mon a smal l cylindrica l containe r an d rotating the containe r rathe r tha n a fue l tan

k or a n entir e vehicle . The containe r hold s approximatel yon e gallo n o f stoddard solven t whic h i s pressurize d t o 1 0 inche s o f wate r i n orde r t o simulat e the liqui d hea

d o f a n actua l fue l tank . At the star t o f the test , th

e containe r i s completel yfull , s o tha t th e valv e i s actuall yclosed . Thi s i s don e in orde r t o tes t the abilit yo f the valv e t o sea l i n the uprigh t position . GT the n quickl y rotate s the containe r t o 90° , observe s an yleakag e the n quickl y rotate s i t t o 180 ° an d observe s th

e leakag e there . The result s obtaine d on the EP Asimpl e syste

mvalv e b

yGT usin

g thi s tes t metho d ar e show

n in Attachmen t 2 unde r th e heading "Liqui d Testing-Rollove r a t 1 0 in . o f H2O" . Thi s standard tes t metho d used b yG T ma

yno t adequatel y describ e the leve l o f rollove r protectio n provide d b ythe valv e in a wors t cas e situatio n becaus e th e leve l o f liqui d .an d th e pressur e in the tes t devic e caus e the valve s t o be alread y completel yshu t a t the star t o f th e test . However , i f the valv e wa s no t completel yshu t a t the star t o f rollove r (a s woul d be th

e cas e in mos t situations ) the n a highe r rat e o f leakag e migh t occur a s the valve wa s rotated . Becaus e o f this , EP Aaske d GT t o tes t th e simpl e syste

mvalve s wit h a modifie d tes t procedur e i n whic h the containe r i s onl yfille d t o the 90-9 5 percen t level , whic h wa s take n t o be th e poin t wher e the valve floa t ha s jus t become buoyan t bu t wa s no t ye t closed . The rollove r devic e wa s als o lef t a t atmospheri c pressure . Thi s probabl ymake s i t mor e difficul t for th e valv e t o mee t the leakag e specification s tha n i f i t wer e o

n a n actua l fue l tank , sinc e the liqui d hea d helping t o clos e an d sea l the valv e during rollove r i s les s in th e smal l containe r than i t woul d be in a full-siz e fue l tank . EP Aals o aske d GT t o perfor mthe tes t according t o th e timin

g an d rotatio n rate s o f th e FMVS S 30 1 test .P. 4



### The dat a obtaine d b yGT on it s tw

o prototyp e valve s i s include d i n Attachmen t 2 . Bot h valve s leaked muc h les s than Ford' s specificatio n o f 4 c c pe r minute . The firs t valv e teste d ha

d no leakag e ove r the 2 4 minut e tes t period . Th e secon d valv e teste d leaked 4. 1 c c during th e firs t 5 minute s o f testing (0.8 2 cc/min ) an d a tota l o f 4. 3 c c ove r the 2 4 minut e tes t perio d (0.1 8 cc/min) . Becaus e o f th

e critica l natur e o f rollove r protection , EP A repeate d the tes t for one o f the valve s usin g the same equipment . The result s reinforce d thos e obtaine d b yGT (Attachmen t 3) . Th e highes t leakag e rat e during the tes t wa s 0.9 1 c c pe r minut e an d no leakag e occurre d afte r 180 ° o f rotation . Avide o tap e o f thi s tes t i s available . Following completio n o f thes e tests , Ford questione d how wel l the tes t equipmen t simulate d the performanc e on a n actua l fue l tank . In -respons e t o thi s questioning i t wa s decide d t o tes t the valv e on a n actua l fue l tank . Fo r thi s test , EP A selecte d th

e sam e valv e a s wa s used fo r th e For d Tauru s demonstratio n refueling system . Valv e performanc e for thi s tes t wa s equivalen t t o earlie r test s (Attachmen t 4) . Th e highes t leakage/rat e wa s 0.4 8 c c pe r minut e whic h occurre d during th

e firs t 5 minute s o f th e test . Onc e agai n n o leakag e occurre d afte r 180 ° o f rotation . Thi s tes t wa s als o documente d on vide o tape . Base d upon bot h th e supplier' s an

d EPA' s tests , th e rollove r performanc e o f the EP Asimpl e syste

mvalve i s excellent . Al l test s showe d tha t thes e valve s easil yme t curren t For

d rollove r valve specifications , an d allowe d littl e o r n o leakage . Attachment s 6518 WP. 5

4S.'to l Attachmen t 1 gus t 31 . 1977 . shal l mee t

al l th e require- ' ment s o l £6. 1 i naperpendicula r impac t only . SC.2 . an dSG.4 . Eac hof thes e type s o f vehicle s manufacture do no r afte r Septembe r

1 . 1977 . shal l mee t

al l th e re quirement
- o

f SO . excep t

S6.5 . 55. 3 Vehicles with GVWR ojmore than 0.000pounds but not more than 10.000pounds. Eac hmultipurpos e pas senge r vehicle , truck , nn dbu s wit ha GVW Ro

f mor e tha n6,000 pound s bu t no t mor e tha n10.00 0 pound s manufac
ture dfro mSeptembe r 1 , 1976 . t o Au
gus t 31 . 1977 . shal l mee t

th e require
ment s of S6. 1 i naperpendicula r impac t only . Eac hvehicl e manufacture do no r afte r Septembe r

1 . 1977 . shal l mee t

al l th e requirement s o f

S6 . excep t

S6.5 . 55. 4 Schoolbuscs with a GVWR greater than 10.000pounds. Eac hschoolbu s wit h aGVW Rgreate r

tha n10.00 0 pound s manufacture do no r

afte r Jul y 15 , 1976 , shal l mee t

th e requirement s of

S6.5 . ' S5. 5 Fuel

spillage: Barrier

crash. Fue l spillag e i nan y fixedo r movin g barrie r cras htes t

shal l no t

excee d1 ounc e b y • weigh t fro mimpac t

unti l motio nof

th e •vehicl e ha s ceased , an dshal l no t excee d atota l o

f 5 ounce s b y weigh t

i nth e 5-minut e perio dfollowin g cessatio no f motion . Fo r

th e subsequen t

25-minut e perio dfue l spillag e durin g an y 1-minut e interva l shal l no t

excee d1 ounc e b y weicht . S5. GFur l spill

ape: Rollover. Fue l spil
lr.e e i nan y rollove r

test , fro mth e onse t o f rotational motion , shal l no t excee d atota l o

f 5 ounce s by weigh t

fo r th e firs t 5 minute ? o

f testin g n t

enc hsuc cessiv e 90 ' increment . Fo r th e remain
in g testin g rcriod . a t

eac hincremen t

of SO ' fue l spillag e durin g an y 1-mlnut e ir.'.crvr d.'.hal l no t

excee d1 ounc e b y weight . S6 . Test requirements. Eac hvehicl e wit haGVW Rof

10,000 pound s o r

les s shal l b» capabl e o

f meetin g th e require
ment s o f an y applicabl e barrie r

cras htes t followe db y astati c rollover , withou t al
teratio no

f th e vehicl e durin g th e tes t sequence . Aparticula r

vehicl e nee dno t mee t furthe r requirement s afte r

havin g beer , subjecte dt o asingl e barrie r cras h tes t an dastati c rollove r

test . SJ. l Frontal

barrier crash. Whe nth e vehicl e travelin g longitudinall y forwar d a t an y sp°e du p t o an dincludin g 3 0 mp h impact s afixe dcollisio nbarrie r tha t i s perpendicula r

t o th e lin e of

trave l of

th e vehicle , o r

a t an y angl e u p t o 30 ° i n eithe r directio nfro mth e perpendicula r t o th e lin e o

f trave l o f th e vehicle , wit h 50th-pcrccntil e tes t

dummie s a s specifie d i nPar t 57 2 o f thi s chapte r

a t eac hfron t outboar ddesignate dseatin g positio nan d a t an y othe r

positio nwhos e protectio n syste mI s require dt o b e teste db y adum
m y unde r

th e provision s o f

Standar dNo . 2C8 . unde r

th e applicabl e condition s o f S7 , fue l spillag e shal l no t excee dth e lim
it s o f S5.5 . S6. 2 Rear

moving barrier

crash. Whe n th e vehicl e i s impacte dfro mth e rea r b y abnn-ic r

movin g a t

3 0 mph , wit htes t dummie s a s specifie di nPar t 57 2 o f thi s chapte r a t eac hfron t

outboar ddesig
nate dseatin g position , unde r th e appli
RULE S AN D REGULATION S

cabl e condition s c f

57 . fue l spillag e shal l no t excee dth e lin.it s o f

S5.5 . SG. 3 Latera l 77ti;t;::i<

7 barrier

crash. Whe nth e vehicl e i s impacte dlaterall y o n eithe r sid e by abarrie r

movin g a t

20 mp h wit h50th-pcrccntil e test dummie s a s specifie di nPar t

57 2 o f thi s chapte r

a t position s require dfo r

testin g t o Stand
ar dNo . 208 , unde r

th e applicabl e condi
tion s o f S7 . fue l spillag e shal l no t excee d th e limit s of

S5.5 . 56. 4 Stati c rollover. Whe nth e vehicl e i s rotate do nit s longitudina l axi s t o eac h successiv e incremen t

o f 90' , followin g a n impac t cras hS6.1 , SG.2 . o r

SG.3 , fue l spil
lag e shal l no t

excee dth e limit s o

f S5.6 . 56. 5 Moving contoured barrie r cras7i . Whe nth e movin g contoure dbarrie r as sembl y travelin g longitudinall y forwar d a t an y spee du p t o an dincludin g 3 0 mp h impact s th e test , vehicl e (schoolbu s wit h aGVW Rexceedin g 10,00 0 pounds ) a t an y poin t an dangle , unde r

th e applicabl e condition s o

f S7. 1 an dS7.5 , fue l spillag e shal l no t excee dth e limit s o f

S5.5 . S7 . Test conditions. Tn e requirement s of S 5 an dS 6 shal l b e me t unde r th e fol
lowin g conditions . Wher e arang e o f con dition s i s specified , th e vehicl e mus t b e capabl e o

f meetin g th e requirement s a t al l point s withi nth e ranee . S7. 1 General

test conditions. Th e fol
lowin g condition s apply-t o al l tests . 57.1. 1 Th e fue l tank

i s filledt o an y leve l fro m9 0 t o 9 5 percen t o f capacit y wit hStoddar dsolvent , havin g th e phys
ica l an dchemica l propertie s o f typ e 1 solvent . Tabl e I AST M Standar dD484
- 71 , "Standar dSpecification s fo r Hydro
carbo nDr y Cleanin g Solvents. " 57.1. 2 Tn e fue l syste mothe r tha nth e fue l tan k

Is filledwit hStoddar dsolven t t o it s norma l operatin g level . 57.1. 3 I nmeetin g th e requirement s o f S6. 1 throug hS6.3 . i f

th e vehicl e ha s a n electricall y drive nfue l pum p tha t nor mall y run s whe nth e vehicle' s electrica l syste mi s activated , i t

i s operatin g a t

th e tim e o f th e barrie r

crash . 57.1. 4 Th e parkin g brak e i s disengage d an dth e transmissio ni s i nneutral , ex cep t tha t i nmeetin g th e requirement s o f SG. 5 th e parkin g brak e i s set . 57.1. 5 Tire s ar e inflate dt o manu facturer' s specifications . 57.1. 6 Th e vehicle , includin g tes t de
vice s an dinstrumentation , i s loade da s fellows : (a ) Excep t

a s specifie di nS7.1.1 . apas senge r ca r i s loade dt o it s unloade dve hicl e weigh t

plu s it s rate dcarg o an dlug
gag e capacit y weight , secure di nth e lug
gag e area , plu s th e necessar y tes t dum
mie s a s specifie di nSC . restraine donl y b y mean s tha t

ar e installe di nth e ve hicl e fo r protectio na t

it s seatin g position . <b) Excep t

a s specifie di nS7.1.1 , a multipurpos e .passenge r vehicle , true!: , o r bu s wit haGVW Ro f

10.00 0 pound s o r les s i s loade dt o it s unloade dvehicl e weight , plu s th e necessar y tes t dummies , a s specifie di nS6. , piu s 30 0 pound s o r

it s , rate dcarg o an dluggag e capacit y weight , whicheve r

i s less , secure dt o th e vehicl e an ddistribute ds o tha t th e weigh t

o n ea: haxl e a s measure da t th e tire-groun d interfac e I s i nproportio nt o it s GAWR . I f th e weigh t

o nan y axle , whe nth e ve hicl e i s loade dt o unloade dvehicl e wcinh t plu s dumm y weicht . exceed" , th e axle' s proportiona l shar e of

th e tes t weight , th e remainin g weigh t

shal l b e Dlace ds o tha t th e weigh t

o ntha t

axl e remain s th e same . Eac hdumm y shal l b e res t mine d onl y b y menu s lh:< t

ar c ir.-.t.allr di nth e vehicl e fo r

protectio nu t

:.r:itnii ; po.'.i
tion . (c ) Excep t

n s specifie di nS7.1.1 , a schoolbu s wit haGVW Rgreate r tha n 10.00 0 pound s i s loade dt o it s unloade d vehicl e weight , plu s 120 pound s of un secure dweigh t

a t eac hdesignate dseat in g position . 57. 2 Lateral

moving barrier

crash test conditions. Th e latera l movin g barrie r cras htes t

condition s ar e thos e specifie d i nS8. 2 o f

Standar dNo . 203 . 4 9 CF R 571.208 . 57. 3 Rear

moving barrier

test condi
tions . Th e rea r

movin g barrie r

tes t con dition s ar e thos e specifie di nS8. 2 o f Standar dNo . 208 . 4 9 CF R571.208 , ex cep t fo r th e positionin g o

f th e barrie r an dth e vehicle . Th e barrie r an dtes t

ve hicl e ar e positione ds o tha t a t impact — (a ) Th e vehicl e i s a t

res t i nit s norma l attitude : (b ) Th e barrie r

i s travelin g a t

3 0 mp h wit hIt s fac e perpendicula r t o th e longi
tudina l ecntcrlin c o

f th e vehicle : an d (e ) Avertica l plan e throug hth e geo metri c cente r

of th e barrie r

impac t sur fac e an dperpendicula r t o tha t surfac e coincide s wit hth e longitudina l centct iin c of th e vehicle . 57. 4 Static rollover

test cnitdtions. Th e vehicl e i s rotate dr.bju' . it s )?:-.=i
tucina l axis , wit hth e nxi s kep t hcriran
is.1 . t o eac hsuccessiv e incremen t o f 90" . 180' . an d270 ' a t

aunifor mr?te . w',. h00 ' o f rotatio ntakin g plac e i nan y tim e in
terva l fro m1 t o 3 minutes . Afte r ic.v.li
in g eac h90 ° incremen t th e vehicl e i s hel di ntha t

positio nfo r

5 mir.tr.c- . 57. 5 Moving contoured barrirr

.'.-.' ? conditions. Th e followin g condition s ?p
pl y t o th e movin g contoure dbarrie r cras htest . 57.5. 1 Tne movin c barrier , \vr.k hj « mounte dn nacarriag e a= specifie di n figure 1 , i s o

f rigi dconstruction , svm metrica l abou t

avertica l 'longitudina l plane . Tn e contoure dimpac t surface , whic hi s 24.7 5 inche s hic han d7 3 inche s wide , conform s t o th e c';:n;cnsij::.
- ;;io".v n i nficurc 2 . an di s attache dt o th e car riag e a s show ni nthat , figure. Th e groun d clearanc e t o tri e lowe r

edg e of th e impar t surfac e i s 5.2 5 : t

0. 5 inches . Th e wheel
bas e i s 120 - t

2 inches . 57.5. 2 Th e movin g contoure dbarrior . Includin g th e impac t

surface , supportin g structure , an dcarriage , weigh s 4.00 0

—50 pound s wit hth e weigh t distribute d s o tha t 90 0 g : 25 pound s i s a t eac hrea r whee l an d110 0 ±2 5 pound s i s a t ep.c h fron t wheel . Th e cente r

o f gravit y i s lo
cate d54. 0 - : 1. 5 inche s rearwar do f th e fron t whee l axis , i nth e vertica l longi
tudina l plan e o

f symmcuy . 15. 3 inche s abov e th e ground . Th e momen t of in
erti aabou t

th e cente r

o f gravit y is : J , = 2 " i 13. 0 flu e ft 3 J , =:347 5 = 17- 1 slu g ft ' f» K

FEDERA L REGISTER . VOL . <0 . NO . 200—WEDNESDAY , OCT03E! t 13 , 107 5P. 6


### Attachmen

t 2 G.T.PRODUCT S AN NARBOR,M I
PAR T # 0800 1 EPAVALV E AI R FLOW FLOW CURV E - se e graph I No f H2 0 0 2 4 6 8 1 0 1 2 1 4 1 6 ROLLOVE R 9 1 0 9 0 DEGREE S 18 0 DEGREE S LIQUI D TESTING 0 " H2 0 0 9 0 18 0 FLO W



## i H of . 0 8 2 10 5 12 0 14 0 16 0 17 5 19 0 20 5 SCF H SCF H SCF H SCF H SCF H SCF H SCF H SCF H SCF H H2 0 CC/MI N 0 0 TANK 90 * LES S THA

N FUL L 4 CC/MI N LEAKAG E (Y/N ) Y Y Y TOTA L LEAKAG E 0 CC

_( 0 - 36 0 DEGREE S OVE R 2 4 MIN. ) ROLLOVE R A

T 10 " o f H2 0 0 9 0 18 0 SLOS H TAN

K TES T Y

Y Y OK - LIGH T ASPIRATION

PET E BELANGE R 10/4/8 8

## 25 0

20 0
10 0 5 0
rt 

# G.T . PRODUCTS

E.P.A . VALV E FLO W<SCFH )

/ _ • 

## U 

## 0 i i i • •Attachment2



## 5 1 0 1 5 2 0 

# PRESSUR E (INCHE S O F WATER )

—PAR T#0800 1 < 

## 10/4/8 8P. 8


### Attachmen

t 2 G.T.PRODUCT S AN NARBOR,M I
PAR T # 0800 2 AI R FLO W EP AVALV E
FLO W CURV E - se e grap h FLO W DATA : 0 2 4 6 8 1 0 1 2 1 4 ROLLOVE R 9 1 0 9 0 DEGREE S 18 0 DEGREE S LIQUI D TESTIN G 0 " H2 0 0 9 0 18 0 FIRS T 5 MIN . TOTA L LEAKAG E FLO W

INo f 0 9 2 10 5 12 5 14 0 15 8 17 5 18 0 H2 0 SCF H SCF H SCF H SCF H SCF H SCF H SCF H SCF H CC/MI N 2 0 0 TAN K 90 % LES S FUL L THA N4 CC/MI N LEAKAG E (Y/N )
4 . 1 4. 3 Y Y Y CC . C C < 0 - 3 ( COMMENT S 4. 1 C C TRAC E

< 0 - 36 0 DEGREE S OVE R 2 4 MIN. ) ROLLOVE R AT 10 M

### o f H2 0 0 9 0 18 0 SLOS H TAN K TES T Y Y Y OK LIGH T ASPIRATIO N

PET E BELANGE R 10/4/8 8

# G.T . PRODUCTS E.P.A . VALV E 20 0 15 0 10 0 5 0 FLO W(SCFH )

(t o O o r 3



## 4 6 8 1 0 1 2 

# PRESSUR E (INCHE S O F WATER ) 1 4 1 6

10/4/8 8 PAR T#0800 2

T J C OAttachmen t 3 Rollove r Tes t Result s Octobe r 18. , 198 8 Valv e Tested : EP ASimpl e Syste mValv e Rollove r performe d wit h th e valv e mounte d o n a cylindrica l containe r whic h hold s approximatel yon e gallo n o f stoddar d solvent . Containe r wa s fille d t o th e poin t a t whic h th e floa t o n th e valv e ha d jus t becom e buoyan t i n th e uprigh t position . Th e liqui d i n th e rollove r devic e wa s a t atmospheri c pressure . Tota l Leakag e Cubi c Gram s Centimeters * (q ) (cc ) Ounce s (02 ) Tota l Tim e

o f Collectio n (min. ) 3.3 1 4.5 7 0.11 6

0.4 6
0.5 4 0.6 3

0.7 5 0.01 6

0.01 9 1. 5 Lea k Rat e (cc/min ) (oz/min ) 0.9 1

0.4 2
0.1 5 0.02 3 Tes t Perio d and Valv e Positio n Firs t 5 min . o f tes t (1. 5 min . trave l fro m 0 ° t o 90 ° an d 3. 5 min . hol d a t 90° ) Fina l 1. 5 min . o f th e 5 min . tota l hol d a t 90 ° 1. 5 min . trave l betwee n 90 ° an d 180 ° an d firs t 3. 5 min . o f 5 min . hol d a t 180 ° N o additiona l leakag e occurre d durin g th e remainin g 1. 5 min . o f hol d a t 180 ° o r durin g th e subsequen t 1. 5 minut e rotatio n fro m180 ° t o 270 ° an d th e 5 min . hol d a t 270 ° an d th e 1. 5 minut e rotatio n fro m270 ° t o 360 ° an d th e 5 minut e hol d a t 360° . 0.01 1
0.00 4

Densit yo f Stoddar d Solven t =1.3 8 cc/ g

### Attachmen t 4 Rollove r Tes t Result s Octobe r 22 , 198 8

Tota l Leakag e

Cubi c Gram s Centimeter s (q ) (cc) * Ounce s (oz ) Tota l Tim e

o f Collectio n (min. ) Lea k Rat e

(cc/min ) (oz/min ) 1.7 4 2. 4 0.06 1

0.2 6
0.01 3 0.3 6

0.01 8 0.00 9

0.000 5 0.4 8 .01 2 Valv e Tested : EP ASimpl e Syste mValv e Rollove r performe d wit h th e valv e mounte d o n a 15. 7 gallo n 198 6 G M Cutlas s Cier a Fue l tan k fille d t o 95 % capacit ywit h 15. 0 gallon s o f stoddar d solvent . Tes t Perio d an d Valv e Positio n Firs t 5 min . o f tes t (1. 0 min . trave l fro m 0 ° t o 90 ° and firs t 4. 0 min . o f 5. 0 mi n hol d a t 90° ) Fina l 1. 0 min . o f th e 5. 0 min . hol d a t 90 ° 1. 0 min . trave l betwee n 90 ° an d 180 ° and firs t 4. 0 min . o f 5. 0 min . hol d a t 180 ° N o additiona l leakag e occurre d durin g th e remainin g 1. 0 min . o f th e 5. 0 min . hol d a t 180 ° o r durin g th e subsequen t 1. 0 minut e rotatio n from180 ° t o 270 ° an d 5 min . hol d a t 270 ° an d th e 1. 0 min . rotatio n from270 ° t o 360 ° an d th e 5 min . hol d a t 360° . 0.3 6
0.003 6 0.00 9

0.000 1

Densit yo f Stoddar d Solven t = 1.3 8 cc/ g