ML20246F252
ML20246F252 | |
Person / Time | |
---|---|
Issue date: | 04/18/1989 |
From: | Kinneman J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
To: | Lamastra M NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
Shared Package | |
ML20245C323 | List:
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References | |
FOIA-89-182 NUDOCS 8905120178 | |
Download: ML20246F252 (34) | |
Text
- - _ _ _ _ _ _ - - _ _ -. _ _ _ _ _ _ - _ - _ - - - - -
n Ka$
s f
UNITED STATES g
S NUCLEAR REGULATORY COMMISSION E
E~
REQlON I l
'475 ALLENDALE ROAD KING OF PRUSSIA. PENNSYLVANIA 19400 APR.1 81989 MEMORANDUM FOR: Michael A. Lamastra, Section Leader, i
Commercial Use Section, NMSS FROM:
John D. Kinneman, Chief Nuclear Materials Safety Section B Division of Radiation Safety and Safeguards, RI
SUBJECT:
THORIUM SOURCES ON LIGHTNING RODS 1;
L It has come to our attention that Heary Bros. Lightning Protection, Incorporated, located at 11291 Moore Road, Springville, New York, manufactures and distributes the "Preventor," a device which contains thorium and which is fitted to conventional lightning rods to increase their effectiveness.
Eighteen sealed, laminated thorium sources are riveted to' each Preventor head. According to Ken Heary, President of.Heary Bros., each source contains 0.75 grams' of thorium, so that each Preventor has a total of 13.5 grams of thorium.
The thorium sources are manufactured by an outside contractor, and _used under the State of New York general license to' produce and transfer the Preventor devices which are possessed by' the end user under the general license in 10 CFR'40.22 or equivalent Agreement
. State Regulations.
Enclosed are copies of information regarding this device' provided by Heary Bros.
Lightning Protection, Inc. pur@ rts to provide a justification for
~
using radioactive material in lightning rods.
Since this activity appears to be in compliance with the applicable regulations, we do not plan to take any further action on this matter and this memorandum is provided foe your information only.
4 J hn D. Kinneman, Chief f clear Materials Safety Section B fvision of Radiation Safety and Safeguards
Enclosures:
1.
"An Experimental Study of Ionizing Air Terminal Perfctmance",
l K.P. Heary et.al.
2.
Heary Bros. Lightning Protection - Parts Catalogue 3.
Lightning Preventer Details 4.
Section 16100 - Preventor Lightning Protection f
4, \\
89051201~78 890510 f
88 SM $72-0 l
l l
l l
w AN EXPERIMENTAL STUDY OF IONIZING AIR TERMINAL PERFORMANCE I
1 K.P.HEARY s.2.Ewnega$x!
S.CUMLEY J. R. CUMLE Y F. RICHENS J. H. MORAN MEMBER NON-MEM8ER NON-MEM8ER NON-MEMBER MEMBER FELLOW IEEE IEEE IEEE IEEE IEEE IEEE HEARY BROS.
CONSULTANT COMPONENT RESOURCES LAPP CONSULTANT LTNC. PROT.CO.
BUTFALO PARTY. LTD.
INSULATOR STAFFORD.
SPRINCVILLE, NEW YORK HOBART,TASMANIA,
- LEROY, NEW YORK NEW YORK AUSTRALIA NEW YORK mtw sions are enhanced by test data from an insta11stion of various air terminals in Western New York, where An experteental study of the performance of ionizing since October, 1987, a period of 4 months; only the fontaing terminal has bee n struck by natural air terminals ve rs us non-ionizing air terminals is reported.
Radioactive sources we re used to obtain lightning a total of 4 times.
Communication towers in the area of the test site are not being hit as ionisation of the air surrounding the tip of the air t e rminals.
they previously we re by lightning and the ionisi ng air terminal is located on a pole lower than the com-munication tower that had been struck prior to this The tests were conducted at the John Lapp High time.
Voltage Laboratory at leRoy, hew York under con-ditions approximating the natural setting. The tests The objective of this expe rimental study was to we re perf ormed in an outdoor area of the laboratory.
de t e rmine the influence of ionisation at the tip Tests we re made during both rain / f og and clear of the air terminals on the probability of flashover weather with the natural bias produced by the clouds with a specific focus upon cooparison of the ionising above the testing area, and also under artificial air ters.nal to an identical air terminal without a bias.
This arrangement pe rmi t t ed the study of the radioactive ionizing
- source, under realistic high relative hustdity ef fects conducive to the suc-conditions.
The test consisted of a coeparison of.
cessful functioning of the ionising air terminals.
the number of electrical high voltage discharges from the " cloud terminal": to each of the pair of ter-Some tests were conducted at low humidity in sunny ainals being tested: one radioactive te rminal and s'
weather for the sake of comparison.
All the tests one standard te rminal (non-r adi o a c t ive ) of anactly we re pe rf ormed on a comparison basis in which a the same geometry.
l radioactive air terminal was compared directly with a The conditions under which such a test is conducted non-radioactive air terminal. Both air terminals had s hould be close as possible to natural conditions exactly t.he asse geometrical configuration in each
, test conducted.
The standard (nc -radioactive) air du ring and just prior to rain.
Therefore the test s hould be pe r f ormed at high relative humidity j terminal chosen was the Tranklin Rod.
The tests r es ult s indicate a substantial supe riority for the a pproa ching 100% and electric bias should be applied sisilar to that present during thunde ra toras. (2) ionizing terminal when tested under realistic conditions.
These results are la agreement wi t h d Mth WM e h d W those obtained in field installations.
high relative humidity and biasing by the cloud above Introduction These are the required conditions for proper testing Some previous publications (3,5,10,12) have laplied of air terminals. In this study, a natural lightning that there is no ac t ual difference in performance discharge was not practical therefore flashover between ionising and non-lonizing air terminals.
volt age was provided by the use of a high voltage These tests were, ho we ve r, made in an ou td oor impulse generator whose rating is 4.3 segevolte, 1 15 e nvironseht using a sharp point 6d metal rod as the kilojoules.
htgb voltsgo electrode. Other publicat8 ors (6,7,8,9) which refer to results et actus1 installat;ons indi.
In the natural t hurde r s t o rs, a sharged c1 cud, which r.4:e a large superiority of the ionizing air terminal is the source of dischavgs, is an extanced terminal c,ve r the non-lonising air te rminal.
These conclu.
not a point. Therefore, in these tests, se extended terninsi in the form of a rectaquiar flat platfors sith stretthed metellic wire mesh served as the high j
volt age tareiral.
This source of discharge who termed the " cloud" er "cl&ud teratoel". (Figure 1)
I
)
This e x pe rin.en t al a r r ange ment provided stability l
against the influente ei outdont vinds and provided a 3
urf fera electriest fleta in the central part of the
{
clad terminal where the air terminals which were the i
65 $M 5?2-0 A papet recessended and approved by the IEEE Tra nsalm ston and Dist ribution Cocnictie subject of testig were positioned.
I of t.he IUE f ewer Engineering Society for presentat-1 Experimental Part I
lon et tre IETE/ PES 1938 Susser Meeting, fortland, Oregon, July 24 29, 1988. Manuscrl;t submi t ted The experimental setting is shown it. Figurs 1, api in August 31, 1987; availakle for printing May 27, 1988.
the photograph, Figure 2.
@ 1988 IEEE 1
t
l> singe ths experimental setting depicted in Figure 1, Consequently, the measurements of the height of the the tests we r 6 made u61ng a standard swi t c hing air terminals had to be precies, since e dif ference inpulse wave s ha pe (250 a 2 500 mic r o s e co nd s. )
In in heights would have the ef fect of supe rimposing on
.some tests, e standard lightning impulse (1.2 x 50) random flashover events a tendency toward higher fre-microseconds) was used.
No significant difference quency of discharges to the air terminal tip which is Closer to the cloud terminal. This unwanted effect be twe e n the two wave shapga we re observed, except that, as would be expected, the f aster wave front og was avoided by caref ully and precisely measuring the the lightning impulse tequited a higher voltage for height of the t e rminsle in all instances to ensure f l a s hove r.
The polarity was se t negative with that there was equal distance between each air ter-res pe c t to the ground as it is in mos t instances in minal tip and the cloud terminal.
thunderstorms: cloud to ground [2 ].
In this study Some examples of the le ng th and intensity of the the two te rminals to be compared were placed in an Streamers emanating from the air terminals are shown identical symmetrical position with re s pe ct to the in the photographs, Figures 3-5.
In general terms, cloud terminal. The test terminals were suf ficiently the streamers from the radioactive sources are longer separated to avoid any coupling ef fect.
and brighter than are those froe a non-radioactive terminal.
[w em eu The maj ority of the tests we re pe rf o rmed unde r the condition of minlaus volt age required for the in,.
e :
~
fisshover thereby avoiding ove rvolt age.
This con-
- dad dition simulated the natural setting with a necessary y
a nd sufficient condition of minimum volt age.[2 ] The randomness of the path of flashover is indicative of
- =-
me m s'
the fluctuations which occur in time with respect to f~~" ))
electric stress and the conductivity of the air.
This was documented on videotape for f urther study.
, -,L..., --
d y,i M
k w.
Mb.
v
/
-y- _c e. a1~
wP.
e
.L. Z-r10ure 1: SmitCM or TEST annahttucht A,, TEST 6
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4*
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p_9 s # f- ;yf l ;.A[g. t JUN. 4!1987 $M 5 EE
., 3.,., ipa.
. g -
- w g*
I.-
Figure 3: STRE.MERS FROM TEST TEIMINALS
)
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^^
' g, _' [
...g
~
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h rigure 2: Petectaen or ttSt AR w f s.;c 3
. ; '. 3 3 The peranelism of the fixed cloud terminal and the
> gh^6 A
identirr! lengtn.
This parallelism is essential to
. S. h y g r.nnd was e s tablie ned by using pos t insulators of
.v' ens ur e the e y l distances of air terminal tips to Wp Q.
f %,;y :
4
.T
)
,,gt, the clot.id ttreinal.
Y
, 7 i
It was deterair.ed experimentally that the difference d' p.yH p.*
.9'.
jh /.j ~
d
,).
7, 0 L?j,f[ p, A i -
in height ebeve the ground plane of air terminal tipo S '
tested was critical. A dif ference in excess of 0.25 h i f ^,' ) [#. f. 'l S.,g'? k.o 4
.e s
y AM 5 2E: '
iaches (6 A me) cov1d not be tolerated becet.se the outcose of the flashover dist ribution was af f ecte(4 pp p M*
Mp,
)
e r.
g The fisshover v oses rand omly free all pa r t s of t he l
cicud te rair al as obse rved by mesna of both vi6eo tape a nt, sisual obs e rva tions.
A stteamer usuall/
Figure 4: STREMERS FRM Tf.ST TERh1NALS formed
.in the unstruck t e r,sical when fla shove r occurred to the other terutnal.
2
j h;.
'e
?-
The voltage for fla s hove r wa s always kept at ths l
.44 etnisua necessary and electric stress rae adjusted to s
approximately 12 kv/ inch (5kv/co) which is the value
~E
- '.c S
1 that is consid e red to be ge ne ral level at which 7
actual lightning strikas occur.(2].
O
- .. *- x
- f.
D.eecription of Air Tarsinals t'i The ionising air terminal is a Franklin rod -9.5"
.U 1.
(2 4.13 ce) in height, modified by the addition of O
a metallic eaucerlike fora 9" (23cs) di sse t e r, f
placed 4"
(loca) below the tip and containing i
radioactive sources -Figut e f 6 f
e, 4
I'.
2.
The Ellipsold air t e rminal is a Franklin rod,
'es %-
which goes through the metallic hollow Ellipsoid
^r a nd protrudes 4.5" (11 cm) above it.
The q.T.
Ellipsold is electrically insulated free the rod, i
.E.
)
j y
g'
- 7 a nd therefore is in a " floating condit ion."
Radioactive sources can be placed in an indenta-tion below the tip which is 0.2 5"(1ca) deep and l
Figure 5: STREAMERS T1KPt TEST TERMINA1.5 4.5"(llen) wide.
Dime ns ions of the prolate mad e to citerstne Ellipsoid are:
2 a =2 0"( 51ca), 2 b-16"( 3 6 ce),
in addition, specific tests were and its Tigure #7 experimentally the existence of space charge influence on fla s hove r events.
These particular The tests, used only one Tranklin rod air terminal.
estrangement permitted the determination of the sini-3.
Radioactive sources ratings sua voltage necessary for flashove r.
Thereafter, a me a s ur ed bias of 40kv negative D.C.
was applied 1.
Radius - 72 Microcuries between the cloud t e rminal and the tip of the 11.
Thorium - 0.72 Microcuries Franklin rod which were separated by 145.2 5 inches (369 cm). Again, the minisua flashove r voltages were d e t e rmine d.
The voltage necessary for flashover The data in Table 1, is a sample of the extended data
( 1800kv) was the same in both cases, thereby base obtained using the a rr ange me nt described in d emons t r a ting that there was no effective space Figure 1 under a wide range of staospheric conditiona
{
charge influence present*
of bias.
In general, there are four (4) impo r tant conditions:
r Height of Alt Desc11ption of h of I
(
oa Air Tern. hals Gash-E I
e j
I Term. > in iedel p
g E
E N
h b
[ b is 1
I s!
E r :s
..e :s
.sw Z
?:!
2 IEi
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S E
q
- a etter e+.'
I 1.-.L EL
_M 2d Einj vm f
C1eee4 lettirg hovedar
.J 1J 11.
Sa 1/a JLJ / a Q
Derige t o't
-y _gJSf 3 109 ft 90 68 19.18 Sv e r a s sC eievse i
j Int se, emntar
_L_LJ11
)e u.ala_J14 s s' weri a f.! *., _E._,4Jaao
- 6-80 Po
- 8 88.H-e'e**1
)
lanit q Pynwder
)
.1E 1J1L Ja 3 /1[J a _)La _
es smo...
ehe _,,
i t a
33*0_ _* 0 to 8'
O TABl.E 1 3
4.) High relative humidity - ao biss The ters " bias" ta intendsd to refer to the more og 2.) High relative humidity with bias less stetdy state corriition of elevetsd electrostatic 3.) Low relative humidity - no bias field stress which exists prior to a lightning 4.)
1,ow relative hualdity with bias strske. It is to be expected that the stream of icas emanating from the various designs of terminals would be affected by the presence of this electrostatic l
stress.
To study the behavior of the various ter-sinals under such stress, the testing circuit was modified.
A direct current source was connected to the " cloud" l
so that steady state direct voltages could be applied for whatever period of time was chosen. This " bias" J
J
- p voltage was maintained up to and during the firing of the impulse generator. To prevent damage to the D.C.
1
/
,4
[
6 source, a special protective circuit was used.
s
,s The bias voltage was varied over a wide range to.ob-g
, "* M a
/
tain 1 kv/ meter (.025 kv/ inch) to 20 kv/ meter (0.5 kv/
inch) average stress. The average stress was calculat-ed using the 3.55 meter (140") sp6cing from the tips of the terminals being tested to the bottom of the cloud.
In this investigation, the bias at high relative humidity was provided 5y either natural sources.
FI p t 6: RAD 10Act!vt Im!!N a1R TERMIW 1.e.,
the raining cloud, or by a separate biasing circuit.
Testing of air terminals aust be carried The standard practice in high voltage ex-out under the conditions existing in thunderstorms,
(
periments is to take about 20 flashover i.e., high relative humidity and bias.
These con-J events as indicative of statistical trend, ditions sust also be maintained even for testing the In the present experiments, each point in 8' "'1'*1 f*
' I f ' ' ' I "' "
- 1'
- r"I"818 Figure 8 & 9 collec u vely are composed of 1
[',]n,",h',f1',73g,,[*d
- WW M close to 1000 6.ints, a significantly la-rge enough statistical base to support the conclusion regarding the experimental tr-end.
In a planned subsequent paper a study of the geometr-scal effects of air terminals which is too extensive Another effect which is important to account for, is the influence of the difference of electric-In general, the flashover path is determined by the stress at the tip of air terminal on the flash-highest electric conductivity channel in the air at over probability. Therefore two air terminals the acaent of discharge and also the highest electric were placed under the " cloud", one of the spher-stress present.
o}dal shape with diameter of 35 cm. and with the blunt tip. and the other was chosen to be the standard Franklin Rod with the sharp tip. The heights of both terminals were the same (98 cm),
separation of test terminals (213 cm) was suff-icient to avoid coupling effect and the distance Q
4, of both terminals to the " cloud" was 369 cm.
g When the voltage for discharge was applied, all 20 flashover events went to the Franklin Rod. The spheroid terminal had to be raised closer to the cloud terminal by 19.7 ca. to become equivalent to the Franklin Rod, that is 10 flashover events to each terminal. This expe:iment demonstrates geo-awetrical sensitivity for the attractiveness of flashover and is related to the electric stress at the tip of the test tere.inals, l
I' Sur.h a $1untness" effect can be produced like-i vise ha closely racked raitiple shar; points at j
the tip of the terminal or strong corons dis-
)
cbrge.
In general, strorg lonization is not necessaril ri pt h m1PMMaWN*
better, but indicates that there is an optimum condition for t5e attractiveness of flashover These two conditions are responsible for the uneven to the *.erminsi if additional conditiens are path appe aranc e of the flashove r spark.
The for-clso fulfilled. Figure G.
nation of the stresser at the tip of the at t e rminal.
which propagates towards t t's "clou6 t e rmi nal" 16 c ont rolled by the 1own se nd avalanche process !!),
whJch depends on the inn concentution at the tip an0 i
electrir field preseni.
)
1 4
)
flashowers at this range'are more frequent to an ionizing air teroinal. This range Th2 atsong forgetion af the stresser st the tip corresponds to the actual otoospheric con-required intitial hig h fon concentration and high ditions just prior to a lightning stroke.
electric strees [lI. The streamer is formed on each Lower levels of probability apply to less air torsinal and the one which is stronge r result s likely strike conditions. Furthermore, the in the successful flashover.
vertical points scatter of flashover per-ntage at a fixed relative humidity level
~
In Figure 8 pe rcent flashower of ionizing to non-
"I 1 d DM iontatng ett t e rminal is plotted as a function of e}e rc as en s as can be seen for applied electric biasing vol t ag e, at two levels of Sperison in Figure 8. In general the te-r eis t ive humidity and radioac t ive activity.
ndency for the flashover to the radioactive Radioactive activity determines the level of ion con-ionising air terminel at relative humidity centration at the tip of air terminal. The ion cloud above 70% is significant and indicates that at the tip is composed of positive and negative ions ionizing air terminals are attracting flas-generated by collisions of high speed Alpha and gets hover more efficiently than non-ionizing particles stressing from the radioactive sources.
air terminals.
These particles also are responsible at high relative humidity for the formation of ionised fog as in a Wilson cloud chamber.
Therefore one expects some 90 depe nde nce of fla shove r probability on relative humidity.
The re s ult presented in Figure B.
shows 80 that at low relative humidity and low electric bias sq the f req ue ncy of fisshover to non-ionizing air ter-ainal dominates; indicative of the depressive ef f ect M
O of ionised air at the tip of air terminal.
- co a Conductive air space at the tip decreases electric 1
stress not conducive for the generation of a strong p g,o
~
~
etreamer and the ionising air terminal appears blunt o
s 8
K 8
6 rather then sharp with respect to the " cloud".
$0 0
b +c At the biasing level in the range from 1 to 20 kv/s 5
0 8 J O
associated wi t h the actual thunderstorm activity, however, the ionising t e rminal forms a long, strong h40 stresser which causes the ionizing terminal to appear w
a auch " sharper" than the non-ionizing and results in a k
shif ting of flashover activity to that terminal.
C 30 I
l The pe r cent age of flashover is strongly dependent on relative humidity suggesting snat ionised fog is the 20 30 40 50 60 70 30 90 100 dominant factor in enhancement of flashovers at g
O.
tonising air terminals.
Finally. at very strong Fig. 9 (ucER podVMi, 6 Deois RIM biasing, the percentage of flashover drops again due to the fact that corona discharges are produced on both air terminals making them identical, and Conclusions modified to some degrae by the presence of ionized 1.
i.* 'gure 8 g 9, it can be concluded that under
[ air produced by radioactive sources.
the conoitions of high relt 've humidity and elec-tric bias the radioactive sonizing air terminal is go more likely to attract flashover than is the non.
lonizing air terminal and these are the conditions 80 present during the thunderators activity.
,4 8
h 70
. m mem 7
cu: Hist g
2.
conc 1usion i.uggests th.t the ares,,otected,,
g,,
>(
^
the ionising air terminal is appreciably larger y
f
[
\\
than that of the non-ionizing termials.
f g
[
D. set mom 3.
Fora effective protection for natural lightning p[
/
90% H Mam
\\ D*4 st:.ikes is prcvided by the ionising termina!.
/
mm 346 HMom 40 y\\
83r 4,
Tests made indsors da bor prmiuce the results obt s t ood in outdoor conditions 14cause thert is p
no nathr al has since the building is ef fectively
]
e t ree ning the outside electric fiald, and 4
2.5 M
6.3 11.3 14.1 16.9 1dY5 lik'V2re telstive kaidity is modified its'ide building enclosure.
MPs tucmc EIAS Fig. 8 nwxmH 5.
Radium sourcas are more effective then other sources because of higher specific activity.
Ir, Figure. 9, percentage of flashover of l
l ionizing to ron-ionissag est terminal i t.
6.
Sinte the respite oring ionizing air tereinals in the field. bth in Western New York and in 4ust-9 depicted verns percentage of reistive hu-l stidity at different levels of electric b1-s alia [ 7) snow the t.ane relative results, i.e.,
j as. Over r,11, the points et high relative the ionizina sir terminals struck more of ten than 1
humidity are above 50%, indicating that f
l 1
)
l L_____.______________
)
the non-lon12ing types, it is ressonsble to beli-y~
Mr.
Ke nne th P.
Heary is
. eve that the laboratory tests est up and proced-4 President of Hasty Bros.
are describsd here is a valid mesne of edeparing Lightning Protection Co. Inc.
various eir terminals. This is true despite the al lightning is such larger than that used in
,t f,,.
f Spr ing ville,
New
- York, fact that the length of the first step in natur-U.S.A.
Fire established since f
3395 in the contracting and the laboratory study.
manufseture of lightning pr o-(
t ection equipment.
References ll) J.D.
Cobine, Caseus co nduc t o rs, Dover Pub 11-He is a member of NF PA cations, Inc., New York 1958, Pages 143, 196.
MacAdvisory Comalttee, ItEE, Buffalo Enginee ring Society,
[2] R.H.
- Colde, Lightning Protection, Chemical ANSI and the Flying Engineers Pubit shing Co, Inc., New York W5, Page s 7,9,2 9.
International.
He has a t tanded schools in Europe,
{3] E.
Pornes and P.
Or t is, "Radioacttee Lightning
- enada and the U.S. A.
tode, Static Eliminators and other radioactive Devices" Nuclear Iberic, S. A. Madrid Spain.
Hu ry has our 35 years esperience specializing (4) Thua Peng Chew, "The mechanism of Lightning Pro-tection" Paculty of Engi nee ring, University of n the field of lightning protection systems design l
a nd e ng ine e ring.
Mr.
Heary is involved with Maleya, Kuola Lumpur-Pages 10,2 5.44,68,96,136 and research proj ec t s in the s t udy of lightning and I38' lightning protection systems being conducted by his
[5] C.
Sorequegneau, C. Cregoirn, J.
Trecot-Paculte rporations, research and pr oduc t s development l
g Polytechnique Desons,
- Beagius, Te brua ry 1985 " Tests on Ionizing Rods" Pages 1-5.
- 16) J.R.
- Cualey, C.C.
Invernisti, d.
- Khaled, C.W.
Aleks ande r Z.
Chaberski, was Wa11hausen, Lindisfarne,
- Tasmania, Genevs.
born in
- Lods, Pola nd on Switzerland, Be rna rds ville, New Jersey " Nuclear January 1, 192 8.
He received Lightning Protection and the Ne w Coaxial the B.S.
degree in Chemistry Lightning Protection Sys tems."
f rom Alliance College in 1952.
6 17] J.R.
- Cueley, C.C.
Invernisti and M.
Khaled -
He studied matheastics in Kent "Teleconsunications -Lightning Protection - a
(
State University in 1953 proven systes" Volume 10, Number 12, Decembe r e
t owa rds M.A.
degree a nd 1976 -Page 37.
received Ph.D.
degree from v
SUNY at Buffalo for solid
- 18) E.
Tamisier, " Electric Installations-Radioactive s tate physics in 1965. He wa s Light ning Rods" Buil ding Trade Jourrial Estimat teaching physics and electri-October 1977.
cal technology for seven years
/
,j in three Buffalo based 19] J. Tresolieres Engineers. Paris, France " Light.
colleges.
He published a number of papers, and holds two pa t e nt s.
His
" Lightning Protection and Prevention 1965 Pages industrial experience extends over nine years, in the IN) Tests Mulhous e-La bora t o ry of the University of fields of semiconductors and radioactivity.
Haute, Algiers-Paris, France January 9, 1981.
He held positions of research scientist, senior
[11] Huller-Hillebrand, "The original HJ11er.
e nginn t and Chief Chemist at various Buf f alo based Hillebrand Paper-Uppsala University.
companin.
Frank Richens (M '69) was Dr. Aleksander 2. Chaberski presently is engaged in born April 4,
19I. 1 in the research of lig ht ning protection air terminals Rochester, New York.
He end systems and is a consultant to the local based 78 received his B.S.E.E.
Indus6ry.
degree at Clarkson College of Technology, Potsdam, New Dr.
Stephen J.
Cualey is j York in June 1964.
currently the Engine e ring Director of Cosponent Resources Mr.
Richens started his Pty. Ltd. of Hobar', Aus t ralia, i
c e.f r e e r with Niaga rt a company involved wit h the Mohawk Power Corp.
and design and manufacture of s pe ct fo ve years with the s urge, transtent. and lightning Engineering Depa r tme n t, in substation work.
He y
protection eq ui pme nt.
Dr, joined Lepp Insulacot Cover.y as an evineer in the cualey holds a first class Product E,nglesetinl; Croup in 1969 and in 1973 was F anou rs degree in Engineering placed in charge of the High Voltage Laboratory. His f roe the University of Tessants duties were empended over the years and now includes and is e
Member of the the Machanic al Testing lab.
and the Pavilion IA Institution of Engi nee rs Trenaalspion Line Lab.
Ope r s tica and test Australia. In 1979, Dr. Cualey was awarded a Rhodes procedures.
Scholarship to attend Oxford University, England from where he received a Doctor of Philosophy degree in Mr. Lichens is a nesber of the IEEE Power Enginnring
- Society, the High Voitage Testieg Techniques engineertug in 1981.
Dr.
Cumley is currently Ag Subcosaittee, and is a tagistered Engineer in the W
h
(
State.cf New York.
the U.S.A. and Australia.
1 6
I
Mr.
J.R.
Cusley is Manrgi ng Director si tightni ng Protection
/,.s
. international Pty.
Ltd.
of
- Hobart,
. (.,
's-Australia.
He is a Te llow of the Institution of
.e.,'97" Engineers ( Australia) ew a nd is pa s t-chai rma n of the National
' l Commit t ee for s
a
.I' Electronics and
/
Teleconsunications.
~
Mr.
Cualey has had thirty years expe rience as a
professional engineer specializing in communications
{
and lightning protection. $1 ace 1971, Mr. Cualey has been actively involved with research into lightning and the design of cost-ef fective lightning protection systems for structures and equipment.
Mr. Cualey is I
cur rently supe rvising several lightning protection research projects in the U.S. A., Asis, and Australia.
Mr. Cualey is a member of the Standards Association of Australia Lightning Protection Cetmattee EL24 and vos one of two Australian representatives at the IEC TC80 meeting at Orlando, Florida in June 1986.
i f-John H.
Moran, Jr.
i (H '47,SM '55,F '60)
I was born Philadel-phia, Pa. on Septen-f El ber 22, 192 3.
He received the BSEE 1
degree f r om Case I
$chool of Applied
(
Science (Now Case-
[
Vestern Reserve University) in 1947.
He is a Registered Professional Engineer in New York and Ohio.
f Mr.
Moran wa s employed by Allis-Chalmers Kf g.
Co.
l West Allis, Wisconsin in the Trans f o rme r Dept. as an electri-cal engineer in charge of the High Voltsge Laboratory from 4947 to 1933.
In 1955 be joined the La pp Ins 41stot Co.,
Le tof, Wew York where he remained j
l uncil re tiri ng a Chief 21ectrical Engineer and Kanager of bushing Legir.e e r1ng in 1986. He is tow
.l engaged in ptivate consulting work, p.
Mr.
Moran is a masDer of the rova r Er4tnee rt he i
Sticsegy of the IEEE. the PSIM and T60 committees ano f
is the Acmedlete Past Chairsan of the High Voltage J
Testing Techniquas Subcommittee of PSIM. He wa s pr e-pented the PSIM Committee Distinguished Service Award I
to if86. He served as the U.S.
Delegate to IEC T.C.
42, V.igh Yoitage Testir.g 1979-1966.
Mr. Moran has kvec involve ( in a large number of wurking groups and other 1EZL setivities, has authored or co-authored a j
number of tech 91 cal papera,, and tolds four parents.
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A)
Air Terminal 5/8" X 9 - 7/16" Copper material HD 29 CU heavy chrome plated 24 CH.
B)-
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C)
Washer copper material HD.
D)
Scaled laminated Source 9'per unit.
E)
Solid silver r i.v i t - used.to fasten sealed laminated source to support structure 2 per each laminal.
F)
Support strueture for sealed laminated source material of soft copper.
G)
. Unit support structure has lettering warning radioactive material - also has warning emblem radioactive material.
11 )
Preventor. air terminal head screws into top of 20'-0" pole mast.
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hB0NDING PLATE CABLE CLAMP CONNECTION FOR DOWN CONDUCTOR TO GROUND ROD BONDING PLATE IS FASTENED TO MAST ON A FLAT SURFACE BRACKET FABRICATED ON M OR BONDING PLATE.
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h BONDING PLATE CABLE CLAMP CONNECTION FOR DOWN CONDUCTOR TO GROUND ROD.
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BASE IS TO BE R400 RED, FUST BE STDOtt FNOUGH 70 WIU11SThiD llURRICNIE WINDS.
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LEGEND l
i i f CONDUCTOR. 2/o COPPER WIRE +10 LBS. PER l
9 1000 FT. (FOR BLD6'5. UNDER 100* HIGH)
)
l ROOF 4/0 COPPER WIRE. 660 LSS. PER 1000 FT. (FOR 1
l BLDG'5. OVER 100'HIGH) TO PREVENT 0R MAST j
COPPER PITCH PAN
- FURNISHED, INSTALLED AND WEATHERPROOFED BY ROOFING CONTRACTOR l'/ "Pyc '40 CONDulT IN COLUMN OR WALL-4 2
FURNISHED, IN STALLED, WE ATH ERPR00 FED AND
-l MAINTAINED FREE FROM O6STRUCTIONS 1
e BY ELECTRICAL CONTRACTOR gi GROUND ROD CONNECTION-CA0 WELD OR ll MECHANICAL (TYPICAL FOR 3)
@ CONDUCTOR CONNECTION-CADWELD OR l
COPPERWELD GROUND ROD 3,*'* 10'- O"
/
(TYPIC AL FOR 3) l
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(fCR BUIIDINGS UNDER 75' HIGH), 4/0 CDPPER WIRE 660 IaS/1000 PT. (ICR BUIIDINGS OVER y
75' HIGH) UP 'IO PREVDrIOR UNIT.
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'j F 1\\" x 7' PVC 140 CCNDUIT GROUND GUARD
@ FINISHED GRADE.PVC GUARD EU m D
@ -@@ Comoc2cR CmecrICu - Co A
CABIE FASTDERS - 3'-0" 0.c. MAXIMLH
@ GTOUND B00 CuttECTICH - CADWEID OR HECHA ICAL (T/PICAL IVR 'ItfREE)'
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Head #LPA-Prev.-2OO4. or 20c
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Lights:(OPTION AL) g4 Deep Bowl Lights with Pipe Arm Attachments
- (O PTIONAL)
Main Support)-"
i Wind Sock (OPTlONAL) 3
- --- 3 4 " Dio. x 20'-O' Lonq 8
Aluminum Most # LPA-2020 t
i Most Mounting Assembly 31 p
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4 NTS
______._________-___.-__.._.________-_,_._____m.___________.._.m___.
O HEARY BROS., INC(established 1895
...lS THE FIFTH GENERATION CCNTINUING IN THE UGHTNING PRO-TECTION FIELD. WE SPECIAUZE IN THE MANUFACTURE OF HIGH QUALITY, UGHTNING PROTECTION SYSTEMS.
WE ARE USTED AS A MANUFACTURER AND CONTRACTOR OF LIGHTNING PROTECTION EQUIPMENT WITH THE UNDERWRITERS' LABORATORIES, INC. OF CHICAGO, ILUNOIS. OUR GUIDE NUMBER IS 249118.
ALL HEARY BROS. LIGHTNING PROTECTION EQUIPMENT IS COM-POSED OF NON-CORROSIVE HIGH QUAUTY ALLOY.ESPECIALLY DESIGNED FOR THE PURPOSE OF PROTECTION FROM UGHTNING STRIKES.
WE WRITE SPECIFICATIONS FOR UGHTNING PROTECTION SYSTEMS AND MAKE DETAILED DRAWINGS ILLUSTRATING THE INSTALLATION OF THE UGHTNING PROTECTION EQUIPMENT FOR ALL TYPES OF STRUCTURES FOR ARCHITECTS AND ENGINEERS, UPON REQUEST.
THERE IS NO FEE CHARGED FOR TilS REQUESTED LAYOUT SERVICE.
IF SERVICE IS DESIRED, PLEASE SEND US A ROOF PLAN SHOWING O
ALL MECHANICAL EQUIPMENT AND OUTSIDE ELEVATION VIEWS OF THE STRUCTURE. ALSO STATE TYPE OF STRUCTURE SUPPORT-STEEL OR REINFORCED CONCRETE.
,I WE ARE PROUD OF OUR FAMlUES' 93 YEARS EXPERIENCE AND FEEL OUR EXPERTISE CAN BE OF VALUE TO YOU IN PROTECTING YOUR STRUCTURE. A GLOBAL LISTING OF SOME OF OUR LARGER IN-STALLATIONS FOLLOWS.
l IF WE MAY BE OF SERVICE TO YOU, PLEASE CONTACT OUR OFFICE.
$:b PHONE 716 941-6141 FAX 716-941-3828 USA 1-800-421-6141 CANADA 1-800-336-6141 4
O o
OTE ll 3PPINGVitt.E, fJEW YORK 14141 e Phone 716 941 '5141 ms.,c ~,.%
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PREVENTOR AIR TERMINALS Prawentor air terminals the genius of the invention lies in its utter simplicity. Stripped of its scientific and technical chorocteristics. Preventor efects on invis;ble zone of lightning ottraction hundreds of foet above the instrument insteod of metal being used to ottract the lightning flash. o constant stream of energized porticles or " ions" take it under control and conduct the lightning discharge into the metal cone of Preventor from which it is conveyed to the ground.
Consult our engineering staff for more engineering data. ond computer design onolysis.
i i
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- LPA.200! SUPER SPHERE PREVENTOR AIR TERMINAL f
HBPREV.-2001 - Ranges and creas at Preventor Level I
Diometer Circle...
230.0 feet or 115 Radius Circle Minimum Height of Most....
20.0 feet i
Areas of Protection Preventor Level........
41,547 square feet HBPREV.-2002 - Ranges and areas at Preventor Level Diameter Circle...........
328.0 feet or 164 Rodius Circle Minimum Height of Most.........
20.0 feet Areas of Protection Preventor Level........
84.496 square feet HBPREY.-2003 - Ranges and creos of Preventor Level Diometer Circle....................
524.0 feet or 262 Rodius Circle Minimum Height of Most..............
20.0 feet Areas of Protection Preventor Level........ 215.652 square feet HBPREV.-20041 - Ranges and mecs et Proventor Level D;ometer Circle.
656.0 feet or 328 Rodius Circle Minimum Height of Most.........
20.0 feet Areas of Protection Preventor Level......
337.956 square feet HBPREV.-2005 - Super Sphere Preventor Head Ranges and areas at Preventor Level $
Diameter Circle........
656.0 feet Minimum Height of Most........
20.0 feet Areas of Protection Pres entor Level....... 450.000 square feet l
PREVENTOR AIR TERMINAL MAST I
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LPA2h20-Flat Roof Mounted Most Most erected on flat roof of building, designed especially to sup-port Preventor Air Terminal 20 feet above roof. Color Selection:
For white odd CW to obove number, for sky blue odd CSB to obove number when ordering.
LPA 2021-Side Mounted Most Most erected on side wall of building, designed especially to sup-port Preventor Air Terminal 20 feet above roof. Color Selection:
For white odd CW to above number, for sky blue odd CSB to above number when ordering.
Note: Location of a Most for the Preventor air terminal on a building structure shall be selected by Heory Bros. Lightning Pro-tection Co inc. or Ughtning Preventor of Americo engineering Q
department. Selection of this locotion is of the utmost importance in order to give the high quality of protection (never fail) the Preventor air terminal reputation has built the world over.
l LIGHTNING CONDUCTORS-
't._ w_. _wM-HB 2/0 Copper Conductor - 28 strands of 13 gauge wire $ -
k.ij==7:=
~i 211,600 circulor mils, net weight 660 !bs. per 1,000 ft.
N HB 4/0 Copper Conductor - 19 strands of 10 gauge wire 211,600 circular mils, net weight 660 lbs. per 1000 ft.
HB3000 Triox Sheated Conductor 1
NOTE:
HB3000 Triox Conductor confines the lightning discharge current to the inner conductor with potential equaliza-i tion along the entire down conductor. (11 is recommended for Franklin Rod, Foroday Coge, and ionizing air ter-j minal systems). The HR3000 Triox Conductor is the only known conductor to eliminate side flashing from down i
conductors in a lightning protectic n system on a structure j
4 FASTENERS & ACCESSORIES i
HB66C Loop Masonry Attochment A heavy copper loop 5/8" wide, complete with 1/4" x 3/4" brass mochine screw and 1/4" - 20 Pok-tite masonry anchor. Fits oil cables through 2/0.
HB70-C - Heavy Duty Bronze Cable Support 2 stainless steel screw cable support with 3/8" masonry anchor. Fits all I
I cobles through 2/0.
HB71 C - Heavy Duty Bronze Cable Support J
2 stainless steel screw cable support with 1/2" mosonry anchor. Fits all cable through 4/0.
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FASTENERS & ACCESSORIES OHBnx orive-in teod sheath wiin stainies si ei Drive ein.
A Masonry fosteners for heavy duty copper or aluminum cable m'
loop support.
i HB63C Duplex Loop A one noll heavy copper loop,1/2" wide, for fostening all 1
cables thro. ugh 2/0 to frame walls or roofs with nails.
.#g:'f,.
HB72 C - Copper Adhesive Cable Holder i
T.
This is a stomped copper n6 nail cable fostener for flot roofs. The ottochment is permanently held in place with Adhesive. Fits all cables through 2/0. We highly recom-mend this type of ottochment for built up roca i
O 3
HB72X C - Copper Pan Type Cable Su(> port j
1 Copper Pon Type Coble Support is used in flat roof creos where there is a non-offixing surface. The pon base is filled with cement.
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HBii7C Cost Bronze Adhesive Cable Fostener
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SURGE-TRANSIENT PROTECTION OFSERVICES RESPONSIBILITY g
STRUCTURE ELECTRICAL POWER SERVICE-PRIMARY AND SECONDARY PROTECTION The responsibility and liability for the Electric power servica PRIMAW AND SECONDAW, SURGE AND TRANSIENT PROTECTION, is the owner of the system, the owner's agent, the owner's service and maintenance contractor, and manufacturer and supplier of system.
STRUCTURE-TELEPHONE SERVICE PRIMARY AND SECONDARY PROTECTION The responsibility and liability for the Telephone service PRIMAW AND SECONDARY, SURGE AND TRANS!ENT PROTECTION is the owner of tho system, the owner's agent, the owner's service and maintenance contractor, and manufacturer and supplier of system.
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STRUCTURE-BURGLAR ALARM AND SECURITY SYSTEMS PRIMARY AND i
SECONDARY PROTECTION The responsibility and liability for the Burglar atorm and Security systems PRIMAW AND SECONDARV, SURGE AND TRANSIENT PROTECTION is the owner of the system, the owner's agent, the owner's service and maintenance contractor, and manufacturer and supplier of system.
STRUCTURE COMPUTER EQUIPMENT PRIMARY AND SECONDARY OI PROTECTION The responsibility and liability for the Computer equipment PRIMAW AND SECONDAW, SURGE AND TRANSIENT PROTECTION is the owner of the system, the owner's agent, the owner's service and maintenance contractor and manufacturer, and supplier of system.
STRUCTURE ANTENNA TOWERS, T.V., RADIO AND REPEATER TOWERS SERVICE PRIMARY AND SECONDARY PROTECTION The responsibility and liability for the Antenna Towers. TV Radio and Depeater Towers Service - is the owner of the system, the owner's agent, the owner's service and maintenance contractor, and manufacturer and supplier of system.
STRUCTURE SATELLITE DISH ANTENNAS SERVICE PRIMARY AND SECONDARY PROTECTION The responsibility and liability for Satellite Dish Antennos PRiMAW AND SECONDAW, SURGE AND TRANSIENT PROTECTION - is the owner of the system, the owner's agent, the owner's service and maintenance contractor, and manufacturer and supplier of system.
STRUCTURE PUBLIC SERVICES ENTERING STRUCTURES PRIMARY AND SECONDARY PROTECTION The responsibility and liability of all Public services entering the structures PRIMAW AND SECONDAW the responsibility of the supplier of the public services, primary and secondary, is to provide primary and secondary surge and transient protection on oil service entering structures serviced by public servica
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SECTION 16100 - PREVENTOR LIGHTNING PROTECTION 1.0 PART 1 - GENERAL 1.1 WORK INCLUDED A.
Provide all labor, materials, equipment, and services to perform all operations required for the l
complete installation and related work as specified herein.
B.
Any such work included in any other section of these specifications that is nor specifically
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described therein shall comply with the requirements of this section.
C.
The following items of work are specifically included in, but not necessarily limited to the work of this section without limiting the generality implied by these Specifications:
- 1. Lightning preventor air terminal head
- 2. Pole mast, complete with base and supports
- 3. Down conductor
- 4. Ground grid installation 1.2 RELATED WORK SPECIFIED ELSEWHERE A.
- Grounding 1,3 SUBMITTALS A.
Manufacturer shall provide seven (7) complete sets of shop drawings for review, showing location of peventor air terminal, mast, conductors, installation procedures and details, and detailed manufacturer's data sheets on all components, accessories, and miscellaneous equipment to be used in this installation.
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1.4 DESCRIPTION
OF SYSTEM i
A.
The Contractor shall provide a perfect and complete installation of equipment to comprise a system
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for 100% protection against damage by lightning and anything necessary to accomplish this result is included the sarne as if specifically mentioned.
I B.
The system, including preventor air terminal, conductors, mast, and complementary parts, shall
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be installed so that completed work is unobtrusive and does not detract from the building appearance.
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SECTION 16100 - PREVENTOR LIGHTNING PROTECTION - Continued G
1.5 CODES, REGULATIONS, PERMITS A.
The work t, hall comply with all applicaole federal, state, municipallaws, ordinances, and regulations.
B.
Work shall comply with regulations of New York State Atomic Energy Committee on licensing for radioactive materials.
1.6 STANDARDS OF QUALITY A.
All materials shal: be the product of a manufacturer regularly engaged in the production of preven-tor lightning protection equipment as manufactured under Lightning Preventor of America, Inc.,
- LPA 2001, #LPA-2002, #LPA 2003, #LPA 2004 or #LPA 2005.
B.
The complete installation of the ionizing air terminal shall comply with the international standard for the installation of ionizing air terminals. All Certificates of Guarantees shall be provided to the owner.
C.
Acceptable contractors are:
l Lightning Preventor of America, Inc., Heary Bros. Lightning Protection Co., Inc. of Springville, New York, or approved equal.
1.7 SERVICE, TESTING AND GUARANTEE A.
Installation of equipment shall be done under direct supervision of the equipment manufacturer's factory representative.
- I B.
The completed lightning protection system shall be fully tested in the p'esence of the Architect to demonstrate continuity of all conductors. A written test report shall be submitted.
C.
The ground grid resistance shall be measured and a written statement submitted to the Architect.
Grid resistance shall be 5 ohms or less.
2.0 PART 2 - PRODUCTS 2.1 PREVENTOR AIR TERMINAL A.
Complete assembly consisting of chrome plated air terminal with housing containing sealed laminated radioactive sources.
B.
Threaded base for connection into pole mast.
C.
Waming emblem indicating radioactive material.
D.
Model to provide cone of protection required.
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SECTION 16100 - PREVENTOR LIGHTNING PROTECTION - Continued 2.2 CONDUCTORS A.
Copper conductors shall be 19 strands of #10 gauge, net weight 660 pounds per 1000 ft., minimum.
2.3 POLE MAST A.
Aluminum pole,20'-0" height minimum, with threaded connection for preventor air terminal.
B.
Base suppo,ts consisting of four (4) channels anchored to roof through pitch pockets and concrete blocks.
C.
Warning emblem attached to pole (radioactive materials).
2.4 GROUND RODS A.
Ground rods shall be copperweld,3/4" minimum diameter,10 feet minimum length.
2.5 CONNECTORS, FITTINGS, FASTENERS AND HARDWARE A.
Provide all connectors, fittings, fasteners, hardware, clamps, guards, lugs, etc., as required to i
connect, interconnect and install all parts of the system.
j B.
All shall be fabricated from copper metal and be approved for use intended.
C.
All connections between dissimilar metals shall have connectors approved for this type of application.
1 3.0 PART 3 - EXECUTION 3.1 INSTALLATION - GENERAL A.
Installation shall be accomplished in a professional manner by qualified personnel regularly engaged in and experienced in this type of work.
B.
All work installed within the building shall be concealed.
C.
All work installed in accessible locations shall be properly guarded and protected.
D.
All material shall be installed in a manner to prevent electrolytic action under the presence of moisture.
E.
All roof, wall or other building penetrations shall be made in a manner to prevent the ingress of water or moisture. Roof penetration shall be furnished and installed by Roofing Contractor.
F.
PVC Sleeves shall be provided where conductors pass through all floors, furnished and installed by others.
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SECTION 16100 - PREVENTOR LIGHTNING PROTECTION - Continued 3.1 INSTALLATION - continued G.
All installation shall be accomplished in a manner to eliminate possibility of displacement and subsequent maintenance.
H.
All connections shall be mechanically and electrically sound and all bonding surfaces shall be cleaned and brightened just prior to attachment.
1.
Provide all excavating, backfilling and tamping earthwork as required by general contractor or others.
3.2 INSTALLATION -- CONDUCTORS A.
Install down conductors within 1 1/4 inch PVC-40 plastic conduit.
B.
Cables on flat roof areas may be run exposed. Adhesive type fasteners shall be spaced at 3'-0" maximum.
3.3 l INSTALLATION - GROUND RODS A.
Ground rods shall be driven to full depth in soil undisturbed by building excavation and are not to be driven into excavation backfill area.
B.
Provide triangular grid consisting of threo (3) grounds located at least 4'-0" from nearest building foundation.
C.
Provide connection between grid and water service.
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D.
Provide grid resistance of 5 ohms maximum.
E.
Top of ground rods shall be installed at least 2'-0" below finished grade.
3.4 CERTIFICATE OF TEST AND GUARANTEE A.
Submit factory certified tests for preventor air terminal.
B.
Submit guarantee for installation, range of lightning protection and limits of radiation level.
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