Text

Forwards Response to 820211 Request for Addl Info Re Adequacy of Facility Electrical Distribution Sys Voltages
	ML20042A845
Person / Time
Site:	Fort Calhoun
Issue date:	03/19/1982
From:	William Jones; OMAHA PUBLIC POWER DISTRICT
To:	Clark R; Office of Nuclear Reactor Regulation
References
	LIC-82-133, NUDOCS 8203240194
	Download: ML20042A845 (85)
	v • d • e

{{#Wiki_filter:. Omaha Public Power District 1623 HARNEY 8 OMAHA, NEBRASMA 68102 3 T E L E P H O N P. 536-4000 AREA CODE 402 March 19, 1982 LIC-82-133 O e-Cb Mr. Robert A. Clark, Chief 8 U. S. Nuclear Regulatory Commission NECggNO g Office of Nuclear Reactor Regulation 9 E C 8gIO82A -11 Division of Licensing Operating Reactors Branch No. 3 Washington, D.C. 20555 U

Reference:

Docket No. 50-285 4 ru

Dear Mr. Clark:

The Commission's letter dated February 11, 1982 requested Omaha Public Power District provide additional information regarding the adequacy of the Fort Calhoun Station electrical distribution system vol tages. The District's response is attached as requested. Sincer y, Y . Jones Division Manager Production Operations WCJ/KJM/TLP/RWS:jmm Attachment cc: LeBoeuf, Lamb, Leiby & MacRae 1333 New Hampshire Avenue, N.W. Washington, D.C. 20036 0164 i 8203240194 820319 PDR ADOCK 05000285 P PDR

OMAHA PUBLIC POWER DISTRICT'S RESPONSE TO THE COMMISSION'S FEBRUARY 11, 1982 LETTER Request Provide a listing of all Class 1E equipment that may be running or may automatically star i the interval of time these equipment will De exposed to a degraded voltage under all plant conditions of operation.

Response

Attachment I lists, by row, the Class IE safeguards loads which operate and/or start during normal and accident conditions and lists, by column, the protective relay device trip settings and associated time delays. The respective currents being drawn by the motors as a percentage of their individual nameplate full load current at the time of tripping are also tabelated. The overload current columns represent the time and current settings of the breaker protection overcerrent devices. The columns associated with the undervoltage trips represent the expected motor current in percent of full load current at that voltage level. The figures were taken directly from the District's calibration sheets in the case of the overcurrent devices and directly from the manufacturer's current-speed, torque-speed curves (Attachment 2) in the case of the undervoltage devices. Request Manufacturer's data or appropriate test results to assure that no damage or degradation to these Class 1E equipment (i.e., motors, control circuits, fuses) will occur when subjected to the analyzed voltages and that they will meet the system functional requirements during the period of exposure to a degraded voltage condition. The degraded voltages will include levels down to the loss of grid voltage relays (first level) which will provide automatic disconnection of buses from the degraded power source.

Response

Safety Injection Pumps (LPSI, HPSI, and Containment Spray Pumps) These three groups of pumps do not operate during non-accident conditions, except during quarterly surveillance testing and system functional testing during each refueling outage. As shown in the "Undervoltage Trip During SIAS" column of Attachment 1, these pumps are not exposed to a steady state voltage of less than 90% of nameplate vol tage. An examination of the motor and pump manufacturer's curves of demonstrates that the pumps will accelerate to, and remain at, operating speed indefinitely for not only 90% voltage, but as low as 70% voltage (see Attachment 4). Component Cooling Water Pumps (AC-3A, B, C) One of the three cumps operates during normal plant operation and, therefore, this pump-motor could be exposed to a calculated worst steady state motor-terminal voltage of 89% of its nameplate rating (460 V). (Note: The 78% continuous operating voltage figure referred to in the February 11, 1982 ONRR letter was calculated for HPSI pump SI-2B during accident conditions.) This 89% voltage figure would not be sufficient to trip the undervoltage relays or the overcurrent relays and, from the current-speed plot of Figure A-11944 ef Attachment 2, the current drawn would be approximately 100% tc 105% of full load. These motors have a service factor of 1.0. Raw Water Pumps (AC-10A, B, C, D) One of the four pumps operates during normal plant operation and a calculation similar to that done for the component cooling water (CCW) pumps results in a worst case expected steady state voltage of 87.3% of motor nameplate rating (4160 V). The District does not presently have access to the manufacturer's (G.E.) current-speed curves for these particular motors, although they have been requested. However, their performance should be comparable to the CCW pumps. Their service factor is 1.0. Containment Ventilation Fans (VA-3A, 3B, 7C, 7D) Of these four fans, three operate continuously during normal plant operation; both 7C and 7D and either 3A or 38. Table 6.4-6 on page 6.4-9 of the FSAR (Attachment 4) summarizes the modes of operation of the fans. It should be noted that, during normal operation, fan VA-3A or VA-3B requires only 35% of its motor horsepower rating and fans VA-7C and VA-7D require only 33% of their rated motor horsepower. Attachment 3 provides a copy of the fan manufacturer's qualification test, the last page of which is a graph showing the ranges of current and voltage i l covered during the testing. The lowest expected steady state motor terminal voltage was calculated to be 90% for normal operating con-ditions which should not adversely impact motor operation. These motors have a service factor of 1.15. Charging Pumps (CH-1A, B, C) No credit is taken for these pumps in the FSAR as safeguards (Class 1E) equipment. These pumps are, however, auto-started by the sequencer on an accident signal and one of the pumps operates conti-nuously during normal plant operation. The minimum expected steady t l state voltage for the single operating pump-motor was calculated to be 88% of motor nameplate. The motors have a 1.15 service factor. Finally, the installation of the safety grade auxiliary feedwater automatic initiation system during the 1981 refueling outage should be discussed, since this modification added the motor driven auxiliary feedwater pump (FW-6) to the list of safeguards (Class IE) equipment. This pump is not operated during normal plant operation and, therefore, is nor, susceptible to an undervoltage below 90% of bus voltage. FW-6 is a 250 HP motor fed from bus 1A3. A review of the transient undervoltage analysis (OPPD letter dated August 31,1979) shows that the worst case transients occur on bus 1A4. Therefore, including FW-6 in this analysis would not affect the conclusions of the analysis. Request If the results of item 2 demonstrate that installed Class IE equipment cannot satisfactorily perform their safety functions at voltage conditions indicated in your analysis, provide a detailed description of design changes and modifications you deem necessary to the presently installed voltage protection system to meet staff re-quirements on the subject.

Response

In conclusion, none of the engineered safeguards loads are in danger of being damaged or of not meeting their design operating speci-fications. There could be a concern regarding the possible overheating of thL component cooling water pump motors and the raw water pump motors at their lowest expected steady state voltages of 89% and 87.3%, re-spectively, because of their 1.0 service factors. However, a review of the CCW pump manufacturer's test data (see Attachment 2) shows that the pump motor was successfully operated at 150% capacity. Also, the pump has a brake horsepower of approximately 230 HP at an operating capacity of 3425 GPM. The CCW pump motor horsepower rating is 250 HP. There-fore, at full voltage and full capacity, the motor draws only 96% of full load current (this was verified by checking the motor anineters in the control room). Thus, at 89% of steady state voltage, the motor would draw a current just slightly, one or two percentage points, above full load current, which is not a level capable of damaging the motor windings. A similar argument holds true for the raw water pump motors which are rated at 200 HP. The pump design capacity of 3360 GPM re-quires only 175 HP (see graph, Attachment 2). In fact, an ammeter check showed that the one operating pump motor was drawing only 84% of full load current while the plant was at full load. The District believes some discussion is needed regarding the logic behind the settings of the undervoltage relays which operate during non-accident conditions. As detailed in Attachment 1, the settings are in the range of 72% to 77.3% of bus voltage, with an increasing time delay I from 8 to 17 seconds. These settings are not based on the lowest analyzed (worst case) voltages which would be expected, but rather on the minimum voltage and time the motors would need to accelerate to full speed (see OPPD's letter dated August 31,1979). The purpose of setting the relays at this minimum value is to prevent spurious tripping of off-site power which is the preferred voltage source. However, in light of the high minimum expected steady state voltage calculations resulting from this evaluation and previous ones, the relays could be set higher without increasing the incidence of spurious trips. The District is now investigating this setpoint adjustment which may involve raising the settings as much as 10%, to an operating range of 82% to 87%. Safe interim operation is justified. Present undervoltage and overcurrent protection does not result in serious overloading. Two additional items further assure proper operation. Although not auto-matic, the station's OPLS relays provide a low voltage annunciation well j in advance of any potentially degrading situation. Secondly, although l

.=. ' analysis shows low voltage on the Fort Calhoun Station grid is possible, ~ the District is a member of the Midcontinent Area Power Pool grid which o've" ~ has never allowed the Fort Calhoun Station to be in a low voltage situation. The District has contacted the pump motor vendors to obtain all of the speed-torque curves and is in the process of evaluating the pre-viously discussed voltage relay setpoints. These relay setpoints must be reviewed in light of normal plant operation. It is expected that this work will be completed within 60 days. The NRC will be provided with the results of this investigation and a schedule for all modifi-cations if required. i t 1 i l 4 l l l l l l

9 ATTACHMENT #1 1 I I

% of Motor Full Load Current Instantaneous Time Delay Time Delay, Longest Maximum Minimum Undervoltage E' Trip (A few cycles), Starting Time, Class lE, Based on Overload Delayed Undervoltage Undervoltage Trip During 2' S Safeguards Load Fault Protection Trip Trip 72% Trip 77.3% SIAS 90% Protection Locked Rotor (> 300 sec) (< 10 min) (8 sec delay)(17 sec delay)(5 sec delay) E'

Protection 2' %

SI-1A,B Low 976 466 200 115 162 145 110 kk Pressure S.I. (17.5sec) (45 sec) (Alarm Only) Rg Pps. 4160v ,g 2;T SI-3A,B,C High 1770 531 177 160 160 142 110 Press. S.I. Pps. (14-55 sec) E' 480v C1 SI-3A,B,C Contain. 1765 529 177 160 225 200 110 5 Spray Pps. 480v (14-55 sec) AC-3A,B,C Comp. 1695 509 170 153 145 125 100 R Cooling Water Pps. (15-55 sec) 480v* Eo' G AC-10A,B,C,D Raw 893 460 200 115 N/A N/A N/A S. Water Pumps 4160v* (16.9 sec) (45 sec) (Alarm Only) y VA-3A,B Contain. 2679 536 179 160 N/A N/A N/A Vent Fans 480v* (14-59 sec) VA-7C,0 Contain. 2622 524 175 157 N/A N/A N/A Vent Fans 480v* (14-59 sec) CH-1A,B,C Charging 1823 547 146 128 N/A N/A N/A Pumps 480v*(see note) (13-46 sec) OvercTrrent Non-Ac?ident SIAS Condition Devices Normal Operation Undervoltage Devices N/A - Curves Not Available

Running during normal plant operation NOTE: The charging pumps are not Class 1E, but are auto-started during SIAS.

O ATTACHMENT #2

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2002-14.2 JULY 63 Acmss: 3 rum:s rasvious issues ENGINEERING DATA - WATER DATA SPEED TOROUE CURVE Da the reverse side of this page is a Speed Turque Curve which is applicable to any centrifugal or propeller pump manufactured by Byron Jackson. To obtain the full load Torque at open valve calculate the brake horsepower at f U ~ ~ pu=p duty point and substitute in the formula:

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1 To obtain the full load Torque at closed valve, utilize the same formula as above l except the brake horsepower at 0 GPM is substituted. i l For centrifugal pumps the brake horsepower at 0 GPM is approximately 607, of ( I brake horsepower at peak efficiency. For prope!!er pumps the brake horsepower. l at 0 GPM should be calculated in accordance with data furnished in the Price i I Dook. l l .g i l ^ .( s ~- i L: ~ .P e I i 1 l l ~ 1 r n G QuALHy puurs siNCE $413 l T TI\\ G H klE*N T"_ N (h = ,WW Q me-

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ig h 6 REPORT NO. X-377A D DATE Sentember 3.1970 i ~ 1 ~ ' OA -38A 'FVCS .....w... JO.Y M AN U F ACTU RIN G CO. N EW P HIL A D ELP HI A. O HIO Report,.On 'Ihe 1 i SIMULATED ENVIRONMENT TEST FOR yOY AXIVANE FAN / MOTOR FOR NUCLEAR CONTAINMENT ,1 6, EPE>pE JOY MANUFACTURING CO. FFM521 y M11 M i y g y yo; ~ FORT CALL!OUN NUCLEAR' POWER STATION O U @\\iA"~^Fb'BLIC POTVBR DISTRICT FT. CAL H.. rS lOuN. NEaRASKA i i UNIT F CUS=eR: 3" "nu m. CONT, NO. 76hsoEa cO,uuaaT10N m mo Thru n-RECD. APR 27 IBilIERICAN AIR FILTER CbMPANY liECEIVED l LOUISVILLE, KENTUCKY AAF P.O. No.7391-CN4SI-108 (SECTION 21) PREPARED BY J. F. Hodder ' t4 iCA/ c W. W. Olsow 2[. /[ [d.,1, CHECKED BY J% b 2 ', ', _.. --. dl l'>..' APPROVED BY.s IL M. Turnbull e N. ~ REVISIONS l DATE PAGES AFFECTED SEMARKS 1 ~ l e

. g r !: o, ~ e. .. r.,. P;,G c c: , p a-, hia.b U d,. .1 h 1 'Asi y'- R"0" " . HEW PillLADELPlilA, Olr PREPARED OY '*3-( c. . CHECKED DY

G.,.

. 'r ~ -... l .lOATE Semr mber 3,1970

s. :.

....,.....,.'.'.i",.'.'.;.,c,# 1 .,,....,,. e. : ; ',. .n. <... .1.. .. ~....,,., -. :,i n, .,.,...,..r -?.

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s, 1

.a ..g. .w;. ;. ..i.,...... t.,r' ...s. 3., e.,.., *. 6 ".. i. a.

e

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. * : '. g:j.,, =,.,,.;.....',.,. *...

.,1

,.,T,

., =

g, e ;

. n,s n......' . :t.~ ::

s.

.'J. ...:, ;;. i '. s. heport On 'Ito.,.,.,>.s..,...,,.. :,. !.ca.. .,'. a ; - e. ,L. n +: 3 . '.J .. cl..;<. ',.;cQ, h.., ;...., SIMULATED ENVIRONMENT TEST FOR. ' p.'. ' JOY AXIVANE FAN /MOIDR FOR NUCLEAR CONTAINMENT. l h. REFERENCE JOY MANUFACTURING CO..:FF12521 ~ .c ,( .l s ;. y,... '.. _..

s ~~..v.
s..

y.. c. i - Fo.... , 7,.,... :... - r. ....., ;.c-FORT CALHOUN NUCLEAR POWER STATION - ...t 5" F. '.F '

> OMAllA PUBLIC POWER DISTRICT ' -

V ~ e f FORT CALliOUN, NEBRASKA 4, ~ c .g ,..,...t..-i .r........ ,. - n.. ..a.. .,: *r.^. ..;,..; CUSTOMER: l... ' ;, '," 4.,.. a WALDINGER CORPORATION .~ c: <.. ~. r. ,f.. J d..,, .~.,.u . t. a.;. - 'Ihr ,J.,. .N < AMERICAN AIR FILTER COMPANY 91 4hl TION 2.1) = AAF F;b,No. .c ~ . ~. ...cJOY A.XIVANE FAN MODEL 60-30-1200(MM) NUCLEAR f SERIAL NO. GF-13111 .PART NO. 500722-49 .l - Incorporating a Motor of ' RELIANCE ELECTRIC CO. MANUFACTURE 1 FRAME 5003 SERIAL NO. 2X321793Al-CV 3 RATED 460V/3 P!f/60 CY a. . FORT calif 0UN : SECTION 21 : UNIT.VA 3A/.B. ' ~' u. .....'.c. ,,..s. ,.. t i. ~ .2., s. s. ,a....; . ~. ~- 0 l (. ...'.n.. .t. ..,,? .c.,....;...>-,,., . ; :.:,.,. p ':. ..n,.. 2g \\. 1

c..;c l

.u l.- 1

J O Y r.i d. U PA C'i tI R I N G C O. "..^...,A NCPCRT NO-HEW l'IllL ADE LP alli., O!!n PREPARED tW . CHECKED DY . DATC Septemb *r 3. I'....m ,.,. n...n..... :'.q... ;c. ~ ~- .:n.9 s:.a.3,..... .,t...- c ? q.

... '. - 'z

~. ' ~ . '.. :.C0NTENTS ......,...r .r..-. .a ..t. s s .. :. x..;... s. ..n. . v..: . s. .i... e s i '1. 0 IIcat h n of Motor 1 ~. ' ~.: ...t. .s.c.,.... ...,.c.... n ' ' 5 '.l'ef."..'h'.E. 3.I. '.... '.. .l "'I#'#. 2.0 Environmental Test . ;:,. p. ...a v. g .., f,.. . '3' 2.1. Instruments and Equipment c. , i e :.... .,a. t.. '. i .w '. :. . : ;.. h. 4. ':.::' .Tcat Preparation' 2.2 2.3 Preliminary Operation .4 y / 5 2.4 First Day Tecting . ~..,. y . 7.

2.5 Second Day Testing

.o s. ,. "10 '. ~ 3.0 Inspection of Fc 4.O Inspection of I.:c o - i ll l 5.0 . Summary & Conclusion . 12.. - ,c .a

w List of Pnotc~rcph ;

i' -.....,.. s 113 -'. "- .s .,? ~14 thru 19 ' Photographs

s..

f. t<20 thru 26 Curves ~. . 27 thru 30 Data Tables ....i. c'... 3.1 thru 59 ', "-.t .Speedomax Recordings Reliance Motor Data Sheet Appendix A General Design bomments

' Appendix B

.....w:.,. . r.. s . i.. e ......z.. :;; .., =. .. v, .. r... ....s,,. :,,.e. ..t. ...v ~ , l. ,,,.y s,,- p.,*,.... = .,,,.....s..

y y e 59 .s. 'PAGE I OF ,y /7 - le rr i / :. IN U Ft. Ci n,, r. - I %.t r. ' v 0. u. nu v.J,'7A '.I REr' ORT No' HE*/ PillLADELPillA, O}{lO -,, PREPARED DY ' !.'c'H E c K C O' O Y. . 'JoATE Sentember 3.1970 .,..e 7...?: n. '.. .( '. ' .. ' '. :. ; -,,,., }; '. * -.. " '... - . ' ' ?.' v ;: H u.,~' .c < ....m'...,.,a .~.,.. ., 9 :, s,. .n .,. :. t:, ' Ucl.f. ^ ' '. .,,. -..,......,7...g e f, y [ 7 p f._ . 1.0,; IIcat Aging of. Motor - ,1 c, u,. .,~,.,..v..a:b.... >..:.,;1; y ..- - '.. '.,.: g. D'q* s*;., ..: ;: n. ' l' %e purpose of the beat aging per test procedure' FF12521 is. - ~.g. N- ?

to subject the motor insulation system to simulated normal time lapsed '...

J. operation. The complete motor was placed in the heating chamber. At 7 V,' i .i 3 the start, insulation. resistance was 500 mcgohms between the 1cada and - " / ,' ' the motor frame. ' D: tails of the position of the motor in the heating, J.ce,- .~ ?- J.<: J T..' chamber, metal heat shield,' electric heater, and Speedomax Recorder ... - / J ' :n'i.:m. !.,., '.,. :. . i'.' :.,'*c i.i are all shovm in Photo 1. .,..e,..,.. c .s .i.. .. i,,';.,...- .,., y.a. . <; c.... '.. '... j. ' - ~~~ ne opeedomax twelve channel recorder recorded the temper.. 1,. .,E-

F.'.

4I 1 atures of the following numbered thermoccuples:1- "t* . a. -[. @. 1. 7',. 1 ~

1. :-Front top winding e

" ?:# ~, t"' N 2 Front bottom winding 3. Back top winding (chaft end) ' 1 -.

4.. Bach bottom winding (shait end)

, * :;'i- ' ~W- 5. ' Front top bearing J..T.;'- [ l'; 3l' ' , I,,,,

6. : "Frent bottom beari::g

,/

7. - Back t'op bearing (shaft end) 7,.-

~ ' 8. Back bottom beari:'; (shmt cud) 9 Outsido motor frame - irent .~10. Outside motor frame - back (chaft end) ~ : d ~ '/ ~ 11. Heat Chamber " : : c' Ur *.', "..J.

12., Room ambient

.y, Chart cpced of the Speedornax is enc inch per hour at slow ". p. ,. speed, and twelve inches per hour fast speed. De motor was con-sidered to be up to temperature at 12:00 P.M. August 5,1970. %c. + 48-hour aging period woo. considered to be concluded at 12:00 P.M. August 7,1970..Speedomax recordings of the heat aging process ~~ yi../.. ..*, Q ',' are shown on pages 31 to 59., ,) .n =~ ,1-4 ~ At the. completion of the heating cycle,the.~ heater and circulating , fan were shut off, the chamber door opened, and the motor allowed to cool in the chamb3i.for approximately 16 hours. Indicated post test f motor insulation reoistance was 1000 to infinite megohms. .....s....i - :, u. . y-.. ,..:....,....~.e..,. .m * .r- .. : n.; ;,. - v.., :. A.;. c.-....:. u... ~ .s. : c. 4 3 D* . u., ;

,.v.

~ a -.b ; ...a r: ~ v,.,.<'- .. a:,

.9 3 ,u c,_ Q.,, .....,. m ,(.,..,, c =.. 2. t,) f * :.. t, - ~ .s v ~ .a. I'D'cHT N o. _.3 3.,,, 4 / /. L E t! I'; " / DE L?til A, OHIO f%CI*ARED BY ,,".'*.j CHCCKED DY U ATE ',,_f.rp.Zgt er 3, l 970 ~ h ..v.,!... t...,...;.. '.,,.., q;:. '.,*. y. 3,,=. 9...c. c.,,$ ,g.,.,...,. ..s, ..s . r.,'.,s.,;;

).'

.. c. c,,. .e e.- 2.:.... . ~ ^ " *, .. c.,f. tr : &.. , ' N, y,...:.,A M, 1.0,. lient Aging of Motor (Cont'd) . -. 2 u ;M. 1...., P*. t.. f, ef. t e. ?..* '.... * - + ,.;.,.... k e 4," ',', ' '.Tha motor was then removed from the chamber and inspected,. (. : whereupon it was diccovered that thera was burnt oil around the two bottom breather pipes. Removal of the breather plugs revealed the presence of considerable oil that had flowed from the bearings when ' - ?- .,b.g., g.... ',t it separated from the gresse thickener.. ..,.,; 7,; g..;f. j. t..;j;e,3,.., y ..o . To' expeclit'e a more complete inspection of the motor, dis- ~ . asseml;1y and re-assembly of the motor wao transferred to the Rc!!cc.:e Electric Co.'s local repair center. Disassembly of the motor shc- -'t that the greace in both bearingo, which was Chevron'BRB'12 high tempr-. ~ s. ature grease of blue green color, had ceparcted in:o a ycIlow oil cri.. J I- ^_ black colid matter. The bearinga themselvca were caked with hab. grease and, when turned,' rolled with considerable resistence and c,,. ~ bump ness. i n. ,..,.s .J' 'Iho appearance'of the insulation' indicated that it was in c:. condition. The exterior ccating of the motor frmne was completely i.. f,. place with no peeling or op:lling..though there was ccattered cracita

s.,,.y

',, ' ',..- and discoloration. J: ,o To minimire the timo for cican-up, re-cc',a.My, cnd to U.- ,,: 1, the possibility'of a bearing failure, new bearinga were instel!cd in ti.,: motor where both the bearings and the grence cavities were filled 'tir.' 'ona-third full'of Aercshell #5 grease. -This ;<rcaco var caed only e E - i because it was the only approved type rendily avaiichN. -x

n......

.y...

i, -IIere, it must be pointed out,.that tha normel methcl.p. - af heat J.'

g ;,'c' aging'in the past has been to disassemble the motor and place ou!y the
1, mctor stator in the 1 cat aging chamber,.cnd upon completion of tit

.. "...te::t and removal from the chamber the motor wa:: recceembled and s,. subsequent tests conducted.' 'Ile reason for this being that the bearing.. ,',,:7 '_ system 10 never oubject tp such high temperatures for such a long (" period. of time 'und,er an actuel accident conditics.. ..,e %.'y . ~. - _3; Our purpose ?n cubjacting the complete motor to tha h: at t.:.::3 'i environment was a 'try-and-ceo' trial. 3 ..<.,..,.:..h.

,s n.

.....'.u, ..w-7 ....t - .,a n :. s.: .. p,. .% q... l,C {.:.. 7 ;.. ..c.* ::; u. ?.',.'::. ~ i .u. .-,n,. c.; a,.. ..a.e.v.. v.w. . t... :....:.. ;, ...,. a. ; ..s. ., n.... w ..mi. c.

.. :, s.,..

.......,...,. -,,.,, c,. .y .~ .e... p.,... :.

e> c.. T .4 y ..s.,. n, n... p-t. u n 1 ;s 1,.. e...i. - o 4v1 v. t is u ,; s. NN NO- ' ~ ' ' ilDi Pil!L/.M LPHI A,. .. c... M E I'/s R C D D Y .c " " ;d..'..- CHCCKCO UY' c' .DATC .WCmMr 3. 1970 .. J '.. c/ ~... .;4 5 . A.; t.. s ... m,.. ?. -.... 4... a.. r !:... ..s. ....'s s. ..:,.. ~. .... y. s.. .a r. v.r :. *.....

,.s u

h,

.. u....... ).,. j l s. ;'.'..s. . ; *.'. 4..'

.. 3., g,

.... '...j f. .. y.,e. ,6

f.. e a.:.

.e . } >,. s. ..) ....s., " ' ",;.t..l. M..l w,?. O.'?y" M. .N ~ D.,?..' S... T.'.9 M..,., ... r.,,... :....,..y. - n ;. T 2'. 0 '.Envirohm.ent.al. Test. '1 y u...,,.. e.. u..... s. ...... n,.. v. ;,. . s:;. ..... a..~.. c. :,....p. m..,, ..r

p..,

<v. m,.a:. ,.,, 2.1 instrt ncnta and Equipment *, - } :... ;.....;;[i. f.y'.9.W.':':{~ W.h.: p.. % ..... ?.. . e '. .c. E.

q...~.. -

,n .w....... ~..?.c.. s. ~ '. Megger, James G. Biddle.500 V.D.C. type,s Scr.'.# B1107S06. c.' ';;."

..v: L.,::Q e.g.3,;..qr,yj,y. :.. '?::.:_ *;.].ql.

'.. Voltmeter - Weston - Model.443, Ser.' # 79214 5. Y "..:'.I..' 7. 3.s .7 %:p..

_. ?. ;.

i '.. ..,. 'c ; - / 'mmeter - We'ston.,,Model 433, Scr.1# 158282 '

. A '.,

r A ......c.. <.a. 3. Wattmeter - Weston - Model 329,' Ser. #. 4461.,,c'. D/1., {l;.f?f '. \\. ec. y. .1 H. " * ~ - .......,. i.. s :.: e.:;.. : v..: < .;. ~.: Current Transformers - Weston - Model 327,;Ser. # 4157, s. , n q: .:; \\.. c. '..a

4. e.6

.r.-

'l"-

480011 f;..!- - Wi .~ UL & N Speedomax ;TC type J.'Ser.','# ,o9.. .,..[. ,;.~. .r,,.; ' ~, ~ ...s..... ' ' 4. ' ~ Flow Metera - For Chemical - Ficher Porter i /. J0- .Model 10A1735A, Ser. # 5712A118981. '.' .E - i. ' ' For City Water - Fluher. Porter - ..,. -.l,- 6 4'- -Model 10A3505A, Serc # V.74272/2' c. .,..f . T' ' L & N Wheat:: tone F..s - Medcl 5300, Ser.'.#'4865 M J l - s. t..

.,1,

'., Pressure Gages - U.S., Gage Co.'-; Type #12898-l' v .. n....... ;;...

r.

.....v.... > /

f. Thirty HP Steam Boiler.-

.i^,.': i .o .....+.s i m. t a.. *>.. ' 4 '.*:.,' ^ .. 'Reduccd Volta"o Startcr .. =. l-O e ...,.~......,u... ~. -. m.. v.. s ..:Pr' essure Chamber 60 in. dia., approximately 14 ft. lour ,s .. 3.. 3; A. re ..........i.,...., l rise cycica .c ..'.y.J... 2.1.11 Identification of S cedomax thermocouples for pressuro. # '.' y'... .l '" W.! SO ..,, :..,... j.n. y.m. i';).:. /...'. f.. <. Wh. 7 V.' ..v.m .s... .4 ?, ';.#.1 through 46: .c.. a. .n ~... ,x . * % " ' J.1. Front Top Winding f 7.' ;.:Back Top' Bearing

2. ' Front Bottom Winding.

/ 8. ,Back Bottom Bearing // l ~ L 1 Back Top Winding , 9. Chamber ~ .10.. Outside Joint Flange

,. ".2,,.[4.

Back Bottom Winding

11...Outsidc' Casing *
w "

5.UFront Top Bearing ~' . f.'( ' O ' "9.~ 6.. 'vront Bottom Bearing 12. Ambient,,.. .;;? .,..c... .t:.. .Li.$.<G.:.Q:.q.?.."..:.y;/.~.;,.q. ~.s.. O ; .?..-:.::.' f.i;j.?.f. 6.:' '.; h y. .,T :lp.. {.;..- .. s... s -. w.... ...u.;g. . x... s.. .,.- a... ~. .v:,.....,.. . ~....,... ....e,,g . r.

g.,, ;.

g. - ~. .r. . ~... v. ~. , p k..*,,. s,..* a. ' t.* R *.. ... r..e .y

, y O. B r-1<1 a 1' J. n.rn u. ;. p u,- e .s.. .1 i v M M '" " ') - " ~ " ' ' " . HEV Nill AD Et.MI A, OHI9 '..,i. P,ic PA R CD L' i .CHCCMCD DY

i.oATE SentemMr h IWO 2

3. -

p l ,.., % e.., :*.,,. '. ;; :.

". l:..p

.....:\\, .....v:.. ;., *. v ... =. ' '.. - a,.. '+s.

n. s..0...........

.?

..n.

?. ..cs,. .....1 . : ;.. :.:n cs i. t n. >,.,... u..;...:..,.. :"..., ~ ..e,.;:.:...... ..v.,. . v 4 4;.. '.:: 4... . J..,:. y e B.,?. ~.... li.....,g@y;. p 1

2.2., Test Preparatica.."....

...t. .....c. .m::/.? '; " 2 ':..,~ q.. ' ~. a- .i < :.. _..n.. /, In accordance with Environmental;Tcat Procedurc FF12521, '. .u. ' '...,, basically a moCIlcation of IEEE Report No. NSG/TCS/SC2;A,Propcsed.'" ( '. Guidea for Qualification Testa for Clasa 1E Motor InstaHed Within the '. ' ' l/ c/' Centainment of Nuclear FucIcd Gcnerating Stations, the motor was h "'!d.C T": 'yF. assembled and in::talled with the fan's stect rotor in the 60" diameter.1 ['.. ),- '/) fan portion of the pressure chamber. : We rotor' blade c'ngle was adjuhted Q 24- '.",), ( .;' and checked so that the tip angle was 190, which is' designed to give " I ?. 90,000 cfm O'.4.06"Pt. at.072 density. Sc Report X-377. showing the ,2 7 ' aerodynamic performince cnd cound powcr Icvel of this particular fsi ' ~ 3, " as well as the other three Joy Axivane fans supplied for this installation. / The four-feet lem fan cection with the two four-feet le - M recticna J 'N ~ was meuutt.d L rin..:.n.e.

c..>

. 1 0 (. a t. -.2 u.. :.a..u:. nth: l . chamber Chemical and water spray nozzles were located in the end.. - cection in front of the fan rotor. Fcn rotation was counterclockwice with" . flow directica throu,th the ctraightening vancs and over thejnctor,9%c.. n* . electrical leads and thermoccuplca were brcught out through(the hori ' W.. / i '.. zontal conduit pipe to the ctud ccnnectin,q bc:: which,' in turn, had a' cm211 - ~ S' ^ hole in its bottom to the chamber to equalize the chamber pressure with 1) . the connecting box, alao a small hole to the cutside witli drain and pitecek ^ f to adjuct and continuously purge the conduit and bcx of any condensed , molcture. e -. /.. '. n s .~ d 2.3 ' . Preliminary Operatics. ..... + W..' i.". ; > M..,'.9. '".?? - 1

e. ~..n.............,..

On Mon lay, ' Augu: t 24, the combined fan / motor unit was cecrated through severci chortened pressure rise cycles. ~1his.was Mcne;c;: pre.ccly 'j .,'.'.M.. .~. .e v.- :'....:..

to:

.u. n. 3,,. - ;;.;:-:g y : ;.r, r. i l- . e Z.* ,(1) train the personnel on how to control the unit .s . ~ ;:...:- .(2) establich a method for obtaining the minimum possible y/. '... . pressure rise time from 0 to 70 psig......' : ' a.~7.'.I. O l.:.'E e.. .'s, .,t,... y ,, g.,.., 9,,f ;,- ,.n. s ..,.. :...o... ..-v.-.. . :.....,,. u -, e _ n...' - ~. r. ~...e. .<...g:..

. 4.... y: '

.~... ...,. e s..,...y(q........ a....;....:.. 3.w...r... ..,,g. r. 3 ..., ;,. ; <..y ;4,n:7.,_. A. ; p. u....c . ), m.,, ;.......

3. v. :;...n ~;... :; i

,;/::. l.v.y s. .,,.,...1.. s. .w

.u.

- r. . t. .a. n. ./ . G.,.::i %.. g....,. ;,,q... j,. ;...,...;.. ..... ; yr.. ;...:. s,, .....,....:...m.,......,...,. g..u. .:.........s...;. m. .s.. : w. m.:;.,.. ..s. c.. ..u;;;;~, ...a. y y,t:p..,, r.y..,n ... r .I .c.,.; . c,... y ;..::...,f.:.-

y..

..y... . ~ :..:...~ : ...., s c.... <, ;:

JOY hi ANUFACTURING' CO. %, f C'N

- 0-

.'. NEVI PHILADELP!IlA, 01110 ...t.. "I '..' PREP, RID cY - s n .*..:cuccaco or ~ ' t,'; 'c - 2: O' ofs.r.t Sapicmbr r 3, l'J/0 11.',.:. .,.. :.o.s ; 4l l. 'y. r. l, -,..,, l. . ';; j. ;., l/ : ',.. a, s'.. -l..'.. ; !,& ;;... ;. ' ','<: '.,.. ~J. ; ', ,l., ,o e i.. _ gs_ - e,.,, 2.4,,First Day Testing,,, ..,J,...y p - ......,. q. -v : .. ~. - 7...;, ~. Witnesses present on 'Itesday,., August 25,'1970,. were:..:......,-

. 9,-

?.i

59. ';

.. '. v. :. * .s. v. m ~ . v:,; n,.. . uf... D Franklin : American Air Filter.. .A . '.i. ',.u :. - y , 7... ,3...... " E. Pm'- Gibba and Hill Co. '.' l

W.

ET.'Nandell - Peter Kiowit & Son - ' '

h ".

.t '. i ~ / DrTurnbull - Joy Mfg. Co/ <, S c. 'y ?.((. ;, p...;. J.*" . w O. @. ;d 7'W.A,. 2s '. ';.- -l~ ' ,J. Hodder - Joy Mfg. Co. s. .v;7.. : ..y. ~ ~ c .M Motor with ! cads was first mcggered an'd found to approximate 0.5 - 1 r '~ .l.. megohms.. It was the opinion of all present that this.was due to an ?> . /.. - ,.. -accumtilation of condensation in the insido of the connection' plato fronP - 'r . the previous d2y's testa. Compressed air was then cc::nected to the clectrical connector box, the dralil or vent' at the bottom of the bc was.. ;- opened wid'e, nnrliir was permitted to flow.throsgh the box and conduit a 'for the purpose of drying cut the Ic:ds and stud canaccticus in the ~

.C. connector bo.. At apprc :imately.11:00 A.M. the matcr and leedo '

f. c ' wero again meggered and the rcciatance wac apprcximately 1.5 inc; ohmci' ',:n motor.wan th:n started an'd with no preycure in the chambar tha ~ q-

1. ',; 'clectrical readlugs were 445 volts,111.5 cmp::,. cad 5;,200 watt;/

e., ,c, <. 2.4.1 First Rapid Prescure' Rico Cycle; ~ a.:p.. s 'c,. . ys. :.,. w___ , '. i..

. At 11:45 A.M.,: August'25,.the first rapid preccure rice cycle.'. :j.f1

~ . ; a was started.- ne precsure rice from 0 paig to 70 pclg took cpprc::1 " '..h - ~ ..;,.mately 28 seconds, See Curve, page :'O,'for precsure rice plc:0 tabn'. .- ~ , ' by filming cleck and pressure gages of tha chamber cnd motor preccurco.. '. ' -.nc longer thnn usual timo for this pressure rise was b:lieved due tof.

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d. . the cold c'ondition of the pressure chamber.. ,.0 .~ .. -y.y. T. i..- .'At 70 psig the electrical input to'the motor vics 396.0 amps and ,, f. 252,000 watts. %e high power concurnptica is achieved duo to creessive'- ~

. / moisture carry-over in the stream, rapid condonning of the stream, and.

,~ the minimizing of chamber draining or blow-down during the rapid E pressure rice portion of the pressure cycle. Daring the operation of "., .f this cycle 11:45 A.M. to 1:29 P.M., the ambient temperature of the l-preocure chamber reached 4200 F. and the mctor 3W F. (See cp;rctity , data and Speedemax curve.) During this period the motor wao.ohut off, f.. , at:1:00 P.M., Just befor'e the cccond preasurc cycle was started. :The J. ' / ', f '. l insulation resistance at chutdown was 0.7 megohma. : , l., i. e.,.; 6 -ll ).,.~. : '. .. ;. :. )=,: U..'~s. '.. 'y. '. ~' ' ' : p.'.. ( ......., a ;:... j.' ) . ';c ' <......) t

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.c e:.e-a... .-The second predsure rise cycle was initiated at 1:29 P.M., 5 August 25 (the same day), with a pressure rise from 0 to 70 psig in- .. approximately 9 seconds. See Curve, Page 21 for pressure rise plot. .This cycle from 1:29 P.M. to 2:47.P.M. caw the motor windings rise 0

. to 4400 F. when the chamber n'mbien.t rose to 375 F. ne power input.

. nt 1:30 P.M., just after start-up, was 420 volts. 336 amps, 213,0C0 watts.. At 2:30 P.M. the motor was shut off and when' meggered soon . *after was 1.5 megohms.. . : ::.. / ,: c'e r. .n. 7., $:., . u ' ./.' ' ' 2.4.3 ' Third Rapid Pressure Rise Cycle. .. '.:. : n.c...... w.; . We third rapid pressure cycle ctarted at 2:49 P.M.,: August 25, ?:and rose from 0 to 70 psig in approximately 9 seconds. See Cut a, ..- page 22, for pressure rise plct. Temperature of the front bottom nnd . top windings were, as in previous run ;.the hottest ones and reached. .4 15 F. soon after ctart-up and in 15 minutes. climbed to 4250 F. ac a - 0 0 ..recult of the chamber ambient reaching 30 F., At 3:05 P.M. the mctor. was again de-energized, 'and when meggered was 1.5.megoluns.1Tha .o.: motor then remained off till again meggered at 3:45 P.M, at which time , it was 3.0 megohms. Two attempts to restart the motor at 3:49 P.M. at the high pressure conditions reculted in tripping the overlead brcnker on the reduced voltage startc'. At the end of this test a check van made ' r I and the oil dash pot was then set at its maximum loading posit'on. -This. . hreaker is current eencing. 'Temperaturec of the frent motor win.11rgs .climbad from 400 F. to 450 F. De complete unit was then shut down 0 1 . and a decision made to add the 12 inch inside diameter recirculati: g.' y . pips to the test vessel to afford more cooling to the rceirculated fluid. nis modification was completed that evening so testing could,be J-resumed the next day. a.;; a,. r. i t. 'g ~. a..o; y.,3, .e .,r 1 .. c. ',-l .R; ,,4 '. = . '. (. '. f

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........ ;. a, ?',. w :;:- ~ l9.,j.. ;.;...l. .,, w f.;.. .l. .I:.'i 2.5 Sccond Day Tcsting. :..'. Q.'.?..:.;,.... ..y. .,..m,y...< .. g. '2.5.1. Fourth Rapid Pressure Rise Cycla. l f '.,'., {.. f ' lq 'j@.p^", * ' ? 'p. ',,l- ],.; ....,,.. \\. ;.- n. e- '.On the morning cf August 26, 1970, n' conference between all',,1 ~ 6%., witnesses present and the writer catablished the test details and..' , J. . ' procedure to be folloried in conducting the final envirournental test. .J V'. . that day. 'Dicen details are reflected in the final changcs made to the,.. .~/ - test procedure FF12521. y . ~.. ~. ' ,. l. ~~ c' ' . In accordance with this procedure, the firct test cycle per ' procedure (the fourth rapid pressure rise cycle) was started at 1:30 P.M.'. -]. after the motor insulation resistance was measured and found to hr C.:: ~~ 400 megohms..The motor was started.about five ininutes before tha J ' rapid pressure rise portion of the first procedure cycle..Vibratic:: . measurements of the fan were.072 and.041 mila at the front and : t.'r ~ flanges respectively, ne butterfly valve in the recircubtion duct w ' .. '. closed. Prescure rise of tha cold chamber from 0 psig to.70 psi- ~ ?* .approximately 22' ceconds. See Curve, page 23,'for pressure rise w. time plot. Power input immediately cfter reaching 70 pag was 403 reite,- 441.0 arnps, and 267,000 watts. Fullload current on.thic motor i-' / a- . listed as 280 amps. g,. ...Re test procedure FF12521 was followed as closely as possible . '. : c., as shown on the Test Data Readings taken every five minutes throughout the test period. See pages 26 to 30 . ~x. At the 60 psig condition the motor was stopped l mergered - f* .~ . (25 to 30 megoluns), succcasiully restarted, followed by continued operction at the came pressure to conclude at Icast 15 minutes at this ' condition. Vibration readings at the start und complction of this 60 psig ... ' - b..s1 . - condition were 0.07.and 0.05 mils. ..a. ..g, De unit pressure was then reduced to O psig over a pericd 'of 90 minutes. The vibration at this time had increased to 0.55 mils la ' front and 0.3 mils in back--still well within acceptable limits. When' I the fan was shut off, the m gger reading was 150 mcgohms. i,, .s.... .d,s ...,.. : 1

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f .2.5.2 Fifth Rapid Pressure Rise Cycle. .. ;.... c.. w.:,:a...',.,. w. .t., n. s .J At 4:17 P.M. the second prescure cycle p'cr procedure.EF1252.1 ". .. !.:p.. ( "f.,, 2 .-(the fifth rapid prescure rise cycle) was begun with the motor in the. 6,v;.

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off condition.. The rise time of this cycle took 16 seconds. See Curve,P 10.9 At the 60 psig I oint, 'aa the presure i

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- ' paga 24, for pressure rica plot. was increasing, four attempts were made to start the fan but the breaker, ~,.' "' , f ' tripped out cach time..nc motor was then mcggered and feu.nd to be.....L t ' ql '..,::;C, :2,.,Q:,,g.'l&l '.n, '4 150 mcgohms. ,( .,~ ..,..y .s.u,. ,.,.+: e. .'"1%e reason for the starter's inability to ata5fthe nietor' at thii / ' J' i ,I ame was due to the low voltago cauced by excessive voltage drop in .d ,' the plant distribution system, the limitation of the reduced voltage ']']

starter nad exccchive ccrry-over of water from the.11mited capacity.

.of the bollar during the trcnsien: prescuro condition. After the transicut'. ', ' prec:urc condition, succes:ive efforts to start the motor werd' defected- ~ by the already overheated overload relays.. L..- ..~.1..F.hv./' s. w ..,.: y,.. ;s......,. .,s ... _ ~.. In accordance with c decialcn mado jointly by Eric Petteri Tom' ' Vandell, and tha writer, the prescure was drtOped to.0 psig and the ' l motor started preparatory to running cud completing the acco'nd prcccufc, . cycle as set out in t:r; prc-c. dure, execption bcing tal n to starting the' - fan at the transient Q peig condition. i ".

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.v d h. t> 2 4u v 3. 7h. REPORE yo. HEW PillLt.DELPill A, OlllO . ~ '. ' - ? - PREPARCO DY CliCCKED DY. '.rDATE. _ Septemb :r 3, 1*J/O r - .e, . ; 2-.., '. h.. ;..'. p..>>..~, m .'.'.v., .~ ., Yr t i.. .. '::;/- -l.c.. f. r v.ggj _,. ~ ',,(,,*. 2.5.3' Sixth Rapid Pressuro' Rise Cycle. *:. ". ..p;f.-9 1'~ ' :. .s u.,..,... ; c ..;... s.., ~ .At 5:03 P.M. the second cycle of the precedure,was.rcstarted A - with the fan operating. Pressuro rise time per curve, page 25, for this sixth rapid precsure rise operation was '10. seconds., Fan vibration s .at 70 psig condition was 0.4 mils on front ficago and 0.5 mils on rear ', ~~ - flange. Pressuro was maintained for 30 minutes at 70 pale and the "... i o kibration then found to be 0.5 mils in front and 0.6 mils in back. i Presourc was then reduced to 0 psig over a period of 90 minutes and the vibration at 0 psig was 0.7 mils on the front and 0.3 mils on the. rear flange. Power input was 442 volta,105 amps, and 45,000 watts. 'J ,3 At 7:07 P.M. the fan vecs shut off, thereupon the mencured resistenecc - was 0.5 megohms. -..,,...,r : *-

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. a ..(. .l,' w At 7:30 A.M. the nent day,l hugust 27, ' 1973,".th'e motor 'insulction . resistance was 500 megohms.- .,m .., : '. s. c. .~ . Resistance measurements b: tween the six motor leads when mo' tor avercge temperaturo is.1250 F. cre na Iclicc.'a:,.'... y, .: i.,,...' c u. ~ Tc ^.. .L, Leads ~ .....1... 1. 2. 1." .153 oluns., . -?...~... '. . ~ 3 ; 3.. . w,.~, a ~ 1-4 \\, l . 5 .1G c.~ '?. N. 1-6, 133 l ~ . la 2 3... , 24* ,. 133 ~ " 2.5 .133 '4 ~ ='I 153... ~

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.t. Q Friday, August 28,the precoure chamber.was~ disassembled.] l f . so an inspection could be made of tha fan and ito components. Photo 3 N . J. view..s the front of thc' fan showing tle fan rotor with blades and noso.. n. .7 a ...' #.' Die coating on the blades was in good condition.' 'Dicre was slightN. V' J.. '., ;,., P,.. - [ blistering in some areas on the front binde surface,<Ero'sion of pairi.' ~ I l,' to the hacc metal had taken place on the leading edge and back surfacej # y of the airfoil bladca. 'Ihe~ amount of croclon on the back side waa .,3 almost directly proportioned to its distance from the blade roor. There; was severe discoloration and checking of tbc paint on the no::c,indicatirg, '.that the nose had b' en subject to high temperatures ' Discoloration :'.(i ' ~ c ',..'. paint on both the front cnd back side of the rcto. .ns in excellent n.;- . condition,being only slightly d!scolored to a rust co!cr.

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rp n] vst. h $ l. U v J. 'F'A G t _ r I u -- a --f5 7,s C r ~;'~~.".. ',-.,y .l. J. O 'O pE a s. .) A RCPoRT NO. 'hb r N DI l'It !L AD tiL Pill A, 01110 '.,...PREPARCD DY CHCCKCD DY 'l 4 ,..DATE September 3.1970 w.~..,... ..........~;.. ..,.-,.. z.- ...c, .y f. s. 1 '".'. '. ".. * > ", '.. D:.....i. ~. ' " T', '4,0 Inspection of the Motor. "...

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ne outsido surface of the motor framo in the back third toward .,. [ (the abaft indicated overheating by severe diccoloration of the paint to ,( ,,. t.- ' a dark brown color accompanied by. blistering, checidng,'and flaldng ' l,~ G ' i- .p. e,. away of the paint between and and at the baae of the fins. : The remainder. - ,\\ of the paint was in' fair conditica retaining much of its original color, ' 3:. . V.but again there w2s flaldog away of paint between and at the baao of the,. f..( n. fins in some arms. Photo #4, rear view of the fan, shows this condition.'- The outside appearance of the motor end 1:cIls was exec 11cnt, with no' ~ ,' indication of oli or grease having migrated or been thrown from aromid- ) the shaft. s. ,....g. 3 . v.. Removal of the motor end bells revealed that there'was considor- - ' able grease still in the grease cavity of both bearings. Dough it was l * - ,l stiff, it still was in clean usable condition and flowed evenly when / rubbed between the fingers. There was no indication on the inside of the end bellJ that any oil or grease had flowed,' nor was there any oil ~ .or grense on these surfacea. %c sealing surfaces of both bearing brackets indicated there was no passage of material in either directicn. Directly in front of the shaft end bearing is the bearing locknut where t'...".".'..-r..'.*~."~.'.~...c...""..d".,.c.'<.b..'~'. ,~,. case which wo"'d. ' indicate migration of material in either direction.

De insulation, from all appearances, was in excellent conditi,on.:

1 The coating on the metal surfaces, that is, the ends of the stator end. l., rotor,.v cre exceptional in that there was no rusting,, blisterirg, flaldng,, 'l. ..,,....a ,7., - l, etc. n, x,,

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p" S ', u J O Y L,. A N U FA CT U RI N G C O. r"~ r ' - - HEW PillLADELPillA,01110 PREPARED UY . i 's. - i'- CHCCMCD fW 'DATE .WptemW'r 3, l'UO O .. ?.. .,. - s.. - i. ', > - y,.. s ..?.,..- s ...,,.,;.a .,,..m.. .. e. :...;,,....a.. :::.; ~ .",P 3.... . ~ .l. : .. i.U 3,. : . iu:.. - S.0* Summary & Conclusion. r.- .n r..v ~', Daring the two days of environmental testing of this fan, the, 6l motor and fan rotor have undergone censiderable abuse.. no unit h'an " j P:

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seen not the intended two rapid pressure rise cycIcs but a total of. lxj,,,,, 7,. 'l excluding the preliminary run. He environmental temperature, both.. : / L-/. accidentally at times and. purposefully at others, wa' permitted to rise. T s ',. ' :to approximately 4000 F4 which, in turn, made the.' motor winding and s. 'l f bearing temperature exceed 425 F. During each of the rapid,p'r esure , 'rlse conditions, the powcr when checked Ins always been in the range of. N-approximately 400.0 amps which is considerably above the fullload _ i current of 280 amps. His was due to excessive voltage drop in the plcnt.. distribution system, and excessive moisture carry.over lu.thu cteam. ~ He excessive use of boric ncid solution for cooling, in that there was. used during tiie two days of testing 100 gallons instead of the prescribed 5 gallons per hour,'which for 10 hours of testing would have amotmted to .only 50 gallons, together with the high moisture carry-over from the boiler during the rapid rise portion of the cycle, Ino subjected the motor to many cycles of wetting and drying as evidenced by the fluctuation in,, ... c. C.,. *. ,..megger readings. -In conclusion,.it is our opinion that tids pa'rticular motor end 't .., fan roter during this ceries of tcsts has detncnstrated baycnd any peacible idoub't'~the ability of these fan units to meet and exceed the intent of the . customer's specification. These tests give further credibility to previous. testing in the same frame sized motors of similar daalgn'. D l l -%e'snme fan and motor frame diameter combination was tested *, .-.in both the horizontal axis and vertien1 cxis orientation. In both tests, l l the unit was subjected to the comprehensive test schedule, outlined by -, the IEEE Report No. NSG/TCS/SC2-A, Proposed Guida for Qual!!ication . Tests for Claso IE Motors Installed Within the Con:ainment of Nuclear - Fueled Generating Stations, includhag Aging Sitaulation,. Seismic Force r Simulation and Operation Under a Simulated Environment. We high. ' pressure-high temperature cycle averaged four (4) houra in duration at an ambient condition of 80 psig and 3000 F. He lower pressure-low temperature operation was at 20 psig and 2000 F. for ' even G) and o eleven (11) days duration. During the test the unit was injected with l j chemical spray as recommended by the IEEE Guide. l , ::c. - w:.;, .; :..t;:; ~ . '.a. l 1 ~ '. ..., *,..n: g, P.,.... ...,e v ,..l', t ' s,... c.> ...v:. . c...

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~_ j .f:ym.. o _1 a, 'l - JOY f.t *.i;UFACTO.U.C CC ?ANY 313 tou1~H (JiO AO'.*//.Y P. O. GOx On NEW PHILt.DC LPHI A. O:480 if Tile FEASIBILITY OF APPLYING J0Y AXIVANE FANS FOR RECIRCULATING S MVICE FOR NUCLEAR GENE.MTING STATIONS In water moderated nuc1 car reactorr., it is connon practi<. to scal-in air noving deviccc uithin the containnent shcI. These devices arc intended to cool-dc:en cnd to cler.n-up t. containment should an accident, pipc~ rupture, etc. occur. In this mode, the air noving device would recirculate the containment atmosphere through filtcr and cceler. It becoues absolutely necuer-y that the u: ::i: e ving devic. di. spicy r.bsoluto depcucc'.2ility cr.d relir.bility. Current specification icycls delineate the following conditions to which an air noving device ray be subjected under the condition containment eccidcn cc follo.is: 9 1. Radiation. A ma::icum dosar,e of 10 Rads of Ganma Radiation during the design life of the air moving device, the fan / motor co :bination. 2. Temperature. Short tiac tenperature c):posure during the accident condition of 300 F. The duration of this period is anticipated at a maximum of 3-4 hours. 3. Ilumi di ty. Short time c::posure, 3-4 hours in duration, to 100', relative huuidity in a slightly caustic atmosphere. h 8 e

%d 4. Pressure. Vapor ' pressures of 80 psig during the 3-4 hout duration of the caergency mode. 5. Nornal design operating temncrature of 125 to 0 150 F., at 50% relative humidity. 6. Normal air pressure of 18.3 psia. 7. Design life of 40 years. In previous discussions, we have verbally delineated to you our design and manufacturing capability relative AX1 VANE Fans for recirculating fan duty for Nuclear Generating Stations. We go on record that uc, Joy Manufacturing Company, have over a period of years, furnished frr-d-4r,c for individual cem-i c.~ ~-" 4 - ~%n t : that are similar to that anticipated for the Maximum Cri-Incident (MCI). It is our opinion that the conditions c. design are the conditions of radiction, temperature, . humidity, high vapor pressure and that of a pressure transient. Detailing to a further decVec, uc will nake reference to a number of:' applications that parallel the noted conditions as well as outline a proposed testing program that should unequivecally. prove the everall 'capabil,ity an ' reliability of the propocod fan dccian operating under the incident conditions. ~ Relative to the condition of temp'erature, we make note 'cr many installed axial flou fans opcrating cob.tinuously U? a 250 F., 100t humidity ambient. These are recircularict. fans for lumber kiln drying applications. Motor insulatie systems have yicided excellent service under these conditi for periods in excess of five (5) years. No mechanical design deficiencies have been reported to date. Further, de are the principal suppliers of AXIVANE Fans for Carrier Rotospray units. These units provide conditioned air for textile and other related industries at 1000 -relative humidity, by injecting water through spray norrl discharging directly. into the airstream. For this applic .we provide a motor incorporating a special seal design, a design that will positively exclude any possible water er ment into the motor cavity. These fans have been in suc. ful operation for a minimun of four (4) years. %.a

The ability to operate during the conditions of tenperature, humidity and water spray certainly is most important. Ilou-ever, it is our opinion that these conditions take-on secondary importance to the consideration ef.precrura transient. Just being able to cc:iprehend the pressure transient that might occur during a MCI becc.mes important.. We are of the opinion that the pressure transient demands special design consideration in the interest of naintaining the lubricant in the friction areas, to preclude the possibility of lubrication migration during this transient. A number of design agencies were surveyed in the interest of determining expected transients. The pressure trcnsient included as part of our design consideration is defined in the below rated curve. - PP. ESSURE RISE VE". SUS -TI"E FOR POSTULATED INCIDEli? CONDITION g- - rN rl-- *^i ' 'i TT O i;.

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e By nature, the design of.an axial flo'. fan is such that it can handle a pressure transient without any appreciabin concera. This can best be illustrated by r..ihing not e of a number of Jo, AXIVANE Fans that have opciated throndh and successfullywithstood the condition of nine explosion. Specifically, 1 make mention of the fans installed at Mountaineer Coal Company's Janison No. 9 !!ino, and Eastern Associated Coal's Eccles No. 5 Minc. Other local face ventilation blouers have withstood the conditions of explosion. Specifically, we take note of records that indicate that the Joy face ventilation bloucrs at U.S. Stec1's Rohena Mine withstood the nine explosion and verc placed back into service without repair. Further face ventilation blowers in service in the tunnel driving indus try are subjected to blasting concussion on a daily basis, with no resulting damage. In this light, we must concluie that the axial fan, by very nature of its design, is inherently capahic of passing a proscure or shock uave. Our proposed design of adjustabic pitch axial flow rotor incorporates a:ple aerodynanic and load carrying sections. As an example, the norcal operating tensile stresses at maximum speed are in the order of 7000 psi. v With a 20 psig gradient across the blade section, the maxinun flexural stresses are 23,000 psi. Un' r combined ' loading th;n, the maxinua nornr.1 strcss uculd be les s than 30,00. psi. This represents a uctor of ssfaty in excess of 2 for the sc1ceted binde-rotor tatorial. We have investigated the conditio'n of a 20 psi pressure gradient across the entire retsting assembly.and its effect on the motor bearings. The thrust resulting from this gradient wi]I be belou the brir.c11ing 1 cad cf the thrust bearing. !!ence, we would not cxpect that this gradient would predicate premature fatigue failure. Further, we are of the opinion that the pressure transient will have little or no effect on the insul.. tion system. Our desi gn analysis indicates that the pressure transient nust be considered in the designing of the lub ri cat i on systems, to prevent the possibic nigration of lubricant .due to a pressure gradient, but does not indicate any other related concerns. e I ~ A-4

On the subject of radiation resistance, it is our intention to furnish evidence of industry reports and their results on the subject of Insulation Resistance under Radiation and liigh Temperature Environments. There is'a considerable amount of test evidence and actu,a1 operating e.xperience on the selected insulation components to warrant their use for this application. Generally for most containment aI.pliations the optimum axial-flow fan / motor design will ac of a two-speed design; cither a two-speed singic winding or a two-speed two winding ~~ motor. Normal containment recirculation requirements would. be satisfied at high speed operation; then at NCI the unit would be switched to low speed ope: ation. This in the interest of minimizing the required external energy source. Then the subject of speed switching comes under consideration. It is generally agreed that containment pressure is to be the trigger. Ho.mver, the concept of current limiting warrants consideration. In this scheme, the motor current can be r anitored via current transformers and when the limiting ,le' vel is reached, a relay would autonatically re-connect the motor to the low speed winding. With such a control scheme, the fan / motor would operate within.its design capability for the longest period of time after the contain-ment accident. In the ' interest of minimizing the cbntrol components within the containment, it is recommended that this current limiting control be incorporated completel Further consideration m,y within the cotor-starter . cabinet. ight be extended to sub-stituting current sensing with power sensing through the use cf power relays. In conclusion, it becomes evident that we, Joy Manufacturing Company, have in service many AXIVANE Fans in applications similar to that demanded by the incident condition. l l a. 1 l l' ?. l 1 l x.5

Ar. r.r.., !!OTOR DATA Plant Ft. Calhoun - Sec. 21 Project No. liotor Service VA 3A S B I4anufacturer Reliance lifr. Co. yoy Part No. 600276-2 Rated Iforse Power 250 Frame No. D5008 NEliA Dcsign - A 1 -Voltage 460 Phase 3 Cycle 60 Full Load Amperes 280 Locked Rotor Amperes 2200 130 Motor Rotor 2 Full Load Speed (rpm) 1185 WR (LB-FT squared)2744 Max Load Starting Torque (FT-LB) 1105 Full Load Torque 1105 FT-LB Efficiency: Full .952 3/4 .953 1/2_ 947 Loads Power Factor: Full.878 3/4 .854 1/2 .787 1.o ad s Enclosure TEAO Net Weight 4 Rise 4 3-C ! o retal 1: ode Temperature Rise: Dec. C Over Amb.80 C bvResDeg. C Ambientl30 C E:- rcency FN Insulation Class N Stator Winding Thermal Device l Typ - br. a rings BALL Bearing Thermocouples _ _7 Rotation Looking at End Opposite Shaft End CW or CCW i Te rmi nal Eox Location Looking at End Opposite Shaft End: Right >:

Left, x

I l Motcr Leacs Connectors (Type S Mfr.) Crimp-A!!P, or Equipment Conduit Bo> Entrance Opening - ;iain Leads 3-1/2 I.P.S. Inches Conduit Box Entrance Opening - Aux. Leads None Inches j Space IIcaters: Voltage 115 Wattage 660 Recarks: I I l i ~,

i 4 MOTOR PERFORMANCE DATA 1 OPERATING CONDITION EMERGU:CY 1 a. Design llorsepower 250 b. Operating Speed, rpm 1185 c. Full I. cad Current, amps 200 d. Locked Rotor Current, alaps 2200 c. Maxituum Titne for LRC, cec. 20 f. Starting Torque, ft.-lbs. Il0'.i 9 Full Load Torque, ft.-lbc. Il 0 i-h. Decign Temperaturo Rico, OC. LO i. Efficiency, t l'ull Load 3/4 Load PS.1 1/2 Load 91.7 j. Power Factor, % rull Lead C7.0 .3//. Lot.d LL.- 1/2 Load 76.7 k. Duty Point., BilP, Peak (Max.) 2 /. 5 1. Dut.y Point Ternperaturc Rico, UC. 00 m. Duty Point Etficiency, t 95.1 n. Duty Point Power Pcctor, % 07.6 l I I ( l l l l 5 l P.- 8 ~ m-. ,m. ,~

i 1 i MOTOR SPECIFICATION SHEET i a. Manufacturer Reliance Electric Company b. Type P/my c. Enclosure TEAO d. Torque Constant e. No. of Windings '.One f. Frame Number 5008 g. Horsepower Rating, bhp 250 h. Operating Speed (s), rpm 1200 1. Power Supply, v/ph/cy 460/3/60 j. Insulation Class Class N k. Temperature Rise NEMA Class B 1. Air-Over Capacity (Minimum) ft./ min. 4000 m. Mounting Configuration C-face, Footless' n. Bearings An ti-friction o. Shaft configuration e Tapered, threaded p. Shaft Seal Air Wall Labyrinth 4 O g S ~ 9. h e e B-7

9 ATTACHMENT #4 i I

Few Rs. A. R. yd am 3 6.2 3 System Components kw 6.2.3.1 Safety Injection and Refueling Water (SIRR) Tank Y~'E The SIRW tank contains a minimum of 314,000 gallons of water con-taining 1,700 ppm boron by weight. This is also sufficient boron concen-tration to provide a 5 percent shutdown margin in a new core with all CEA's withdrawn and at a temperature of 60 F. This is sufficient water to fill } the refueling cavity. During safety injection, with all injection pumps ' qp and containment spray pumps running, the tank vill provide at least 24 minutes' supply of water before the pump suction must be switched to the containment sump. The tank is equipped with two separate full capacity outlets and three h-inch vents which are sufficient to permit the tanks to l empty during an accident mode without significantly reducing the NPSH g ' k required for the safety injection pumps. The tank is of concrete, is designed and constructed in accordance with ACI 318-63, and is lined with carbon steel. The liner is coated with a water recistant paint suitable for continuous immersion. 6.2.3.2 Low-Pressure Safety Injection Pumps The low-pressure safety injection pumps are used to inject large quantities of borated water into the reactor coolant system. They are also used to circulate reactor coolant during shutdown to remove residual and decay heat. There are two pumps, either of which can circulate sufficient water to keep the temperature rise through the core to less than the full power value with the reactor shut down at the end of core life. The pumps are designed and tested for thermal transients which exceed those expected in operation. They were subjected to a test program similar to that described Y below for the high-pressure safety injection pumps (see Section 6.2.3.3). The pumps are of the horizontal, single-stage centrifugal type and are provided with mechanical face seals backed up by a bushing, with a leak-off to collect the leakage past the seal. The seals are designed for operation at 300 F. To prolong seal life, a portion of the pump dis-charge is cooled by component cooling water and is used to cool the seals. In addition, normal cooling by the component cooling water system is backed up by cooling water from each of the two rav vater lines serving the engi-neered safeguards equipment (see Sections 9.7 and 9.8). Further, a lov flow alarm is provided on the seal cooling water to the pumps to warn of ( cooling water or seal cooling malfunction. The pump motor is capable of starting and accelerating the pump to full speed with 70 percent of rated ,. 3 q ( voltage. The pumps are provided with drain and flushing connections to .a permit reduction of radiation levels before maintenance. The pressure-containing parts are fabricated from stainless steel; the internals are selected for compatibility with beric acid. The pumps are provided with minimum flow protection to prevent damage when starting against a closed system. The low-pressure pump data are summarized in Table 6.2-1. -p 6.2 November 19T1 Supplement No. 12

TABLE 6.2-1 LOWPRESSURE SAFETY INJECTION PUMP DATA 2-". (VFI Item Ho's. SI-1A & IB Quantity 2 Type Single Stage, Horizontal, Centrifugal Motor Voltage ~ 4160 C~.-- Design Pressiire; psig 500 Design Te=perature, F 350 Design Flow Rate (per pump), gpm 1500 Design Head, ft 403 Pu= ped Fluid 1 percent Boric Acid Temperature of Pumped Fluid, F 40-300 g Shutoff Head, ft 415 Maximum Flov (per pump), gpm 2h00 w Head at Maximum Flow, ft 324 Basic Material 316 SS Horsepower 300 Seals Mechanical Acceleration Time, seconds k Minimum Flov (per pump), gpm 200 NPSH Available (minimum), ft 20 HPSH Required at 1500 gpm, ft 1h.5 Design Maximum Suction Pressure, psig 300 6.2.3.3 High-Pressure Safety Injection Pumps The high-pressure safety injection pumps inject borated water at high pressure into the reactor coolant system during emergency conditions. The pumps are sized to ensure that, following the rapid depressurization of the reactor coolant system and re-covering of the core by the safety injec-g tion tanks, one high-pressure pump will keep the core covered at the start of recirculation, assuming 25 percent spillage. The requirements for boron injection for the steam line break and the injection requirements for smaller break sizes are also considered in the sizing. The pumps are designed for thermal transient conditions of 40 F to 300 F in 5 seconds and 300 F to 40 F in 5 seconds. The pumps are ten-stage horizontal centrifugal units. Mechanical seals are used and are provided with leak-offs to collect any leakage past the seals. The seals are designed for operation at 300 F, but are provided with cooling to extend seal life in a similar manner to the low-pressure pumps; the seal backup cooling is also similar to that provided for the [ low-pressure pumps. The pump motor is capable of starting and accelerating the pump to full speed with 70 percent of rated voltage. The pumps are provided with drain and flushing connections to permit reduction of the .h radiation levels before maintenance. The pressure containing parts of the pump are stainless steel with internals selected for compatibility with boric acid. The materials selected were analyzed to ensure that differential expansion during the design transients can be accommodated with the clear-ances selected. The pumps are provided with minimum flow protection to prevent damage resulting from operation against a closed discharge. 6.2 h

A full scale hydrauMc test-was perf:rmed on sach pump as embly. All pump test setups, test procedures and instrumentation were in accordance with the Standards of the Hydraulic Institute and the AS!E Power Test Code, PTC-8.2. This included verification of satisfactory operation at the stated 1 NPSH. It also included measurement of motor starting and operating current when pumping 40 F and 300 F vater. These tests included a transient test on one unit at the pump design point under the following conditions: ) a. Suction temperature increase from 72 F to 315 F in 5 seconds; b. Suction temperature decrease from 308 F to 70 F in 10 seconds. After the tests were completed, the unit was disassembled and inspected. The high-pressure pump data summary is shown in Table 6.2-2. TABLE 6.2-2 HIGH-PRESSURE SAFETY INJECTION PUMP DATA Item No's. SI-2A, 2B & 2C Quantity 3 Type Multistage, Horizontal, Centrifugal Motor Voltage 480 Design Pressure, psig 1735 Design Temperature, F 350 "I Design Flow Rate (per pump), gpm 150 Design Head, ft 2800-Pumped Fluid 1 percent Boric Acid Temperature of Pumped Fluid, F 40-300 Shutoff Head, ft 3180 Maximum Flow (per pump), gpm 400 Head at Maximum Flov, ft 650 Material Stainless Steel Horsepower 300 l Shaft Seal Mechanical Acceleration Time, seconds k Minimum Flov (per pump), gpm 35 ('- NPSH Available (minimum), ft 18 d NPSH Required at 600 gpm, ft 11 Design Maximum Suction Pressure, psig 210 6.2.3.h Shutdown Cooling Heat Exchangers The shutdown cooling heat exchangers are used to remove decay (W and sensible heat during plant cooldowns and cold shutdowns. The units are sized to hold refueling temperature (125 F) with the design component h 6.2-5

.u a.- .1 6.3 conTAInraiT SPRAY SYSTEM W,.. 6.3.1 Desien Bases The function of the containment spray system is to limit the con-tainment building pressure rise and reduce the leakage of airborne radio-activity from the containment by providing a means for cooling the containment atmosphere after the occurrence of a loss-of-coolant accident. Pressure reduction is accomulished by spraying cool, borated water into the contaira:1ent atmosphere. Heat removal is accomplished by recircu-lating and cooling the water through the shutdown heat exchangers. The system is redundant with the containment air recirculation and cooling 'd system described in Section 6.h. It is sized such that two of the three pumps with a 30-second starting time vould limit the containment pressure to less than design pressure following a DBA. All system components are designed to withstand Seismic Class 1 loadings (see Appendix F). 6.3.2

System Description

The system consists of three pu=ps, two heat exchangers (shutdown heat exchangers) and all necessary piping, instruments and accessories. The pumps discharge the borated water through the two heat exchangers to a dual set of spray headers and spray nozzles in the containment. These h,, spray headers are supported from the containment roof and the spray nozzles are arranged in the headers to give essentially complete spray coverage of the containment horizontal cross section area. Two pumps meet the capacity requirements in the event of a DBA. Two spray pu.nps are located in one engineered safeguards room, along with one HP and one LP injection pump. The third spray pump is located in the second engineered safeguards room with one LP and two HP pumps. Both engineered safeguards rooms are located below grade at elevation 971'-0" in the auxiliary building. The shutdown cooling heat exchangers are located in two rooms of the cuxiliary building at elevation 989'-o". l Each engineered safeguards room has a separate pump suction from both the safety injection and refueling water (SIRW) tank and the contain-7 ment sump to ensure that the pumps in one room vill have adequate suction if the suction line to the second room fails. The containment spray system is shown in Figure 6.2-1. 6.3.3 System comuonents_ Ratings of the equipment are given in Tables 6.3-1 and 6.3-2. Additional detail vill be found in Tables 6.2-1 and 6.2-3. The design of the spray pump casing is identical to the low-pressure safety injection pumps described in Section 6.2.3.2. (q.p. 6.3-1

TP.BLE 6.3-1 CONTAINMENT SPRAY SYSTEM COMPONENT PERFORMANCE (WI'A Containment Epray Pumps, Item No's. SI-3A, 3B & 3C ~ s Number of Units 3 Motor Voltage h80 2; Mode 'P Injection Recirculation Capacity (each), gpm 1700 2000 Head, ft h50 437 NPSH Available, ft 20 18 NPSH Required, ft lk.5 16.8 HPSH Margin, ft 5.5 1.2 Shutdown Heat Exchangers, Item No's. AC hA & kB Number of Units 2 6 Capacity (each) 87.5x10 Btu /hr based on h,000 gpm of cooling water at 114 F inlet temperature and 1,h20 gpm of spray water at 283 F inlet temperature TABLE 6.3-2

SUMMARY

OF PIPINO, VALVE AND SPRAY N0ZZLE CHARACTERISTICS Testing - 100% Radiography of All Welded Joints Code USAS B31.7 (To manual is.olation valves USAS B31.1 (Manual isolation valve. to spray headers) Material Piping 30h SS Valves and Nozzle Stainless Steel Design Temperature, F 300 Design Pressures, psig Piping, Suction 60 I Piping, Discharge 500 1 Valves, Suction 150 Valves, Discharge, 2 in, and larger 300 Valves, Discharge,1-1/2 in, and smaller 600 Wall thickness, piping 2 in and smaller (suction) Sch h0S ~ 2-1/2 in, through 12 in. Sch. 10S ( O, 14 in through 20 in., nominal, in. 0.250 U 2h in. nominal, in. 0.375 8 in and smaller (discharge) Sch, kOS 10 in. through lh in., nominal, in. 0.250 Piping Construction 2-1/2 in, and larger Butt velded, except at flanged equipment ~ 2 in. and smaller Socket velded, except at screwed equipment 6.3-2 ~' Supplement No. 20 June 1973 l

6.h.3.7 Fans and Fan Motors The circulating fans are vane axial, pre-set adjustable pitch, direct-connected, non-overloading, single speed machines with steel cas-ings and wheels. The cooling and filterin6 unit fans are 60 inch diameter and the cooling unit fans are h8 inch diameter. The fans are matched for parallel operation and designed for the air-saturated steam mixture density 1 and flov at DBA conditions; each motor is rated for the peak of the horse-F power curve at these same conditions. The fan motors are of the totally-enclosed, air-over (TEAO) type. o The Class N insulation system, the bearings, and the bearing lubrication and seal systems were developed for service at DBA environmental conditions. The design data are presented in Table 6.h-6; data for nomal operation are also shown for comparison: TABLE 6.h-6 FAN DESIGN AND OPERATING DATA Design Basis Cooling and Filtering Units Accident Ooeration Nomal Oceration Item No's VA-3A & 3B Flov, CFM per unit 86,500 90,000 (.Q y/ Static Pressure Rise, in. H 0 9.7 3.3 p Motor HP, design operating point 215 80 t I Motor HP Rating per unit 227 Cooline Units, Item No's 7C & TD Flov, CFM per unit 52,000 50,000 Static Pressure Rise in. H O 8.0 3.1 2 Motor HP, design operating point, 113 38 I Motor HP Rating per unit 116 C-6.h.3.8 Housings, Duetwork, Exhaust Plenum and Related Accessories The unit housings, exhaust plenum and interconnecting ductwork are constructed from reinforced galvanized carbon steel and are designed to withstand an external pressure differential of 2 psi. Relief ports (see Figure 6.4-4) are provided in the housings and plenum to open and relieve h;t the pressure differential should it exceed 1 psi. These ports close when pressure equilibrium is restored. The dampers downstream of the fans are of the gravity, counter-weight operated type. Flexible connections are installed at the fan duct connections to minimize the transmission of vibration. 3 Cr The plenum discharge hatches are located at the bottom of the 6.h-9

4 ATTACHMENT #5 i I I i i

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diy.%ha{ 0 NDhtnh

/- cTC'y '7.2 d 2 Manufacturcc 1 v. 19, v o T- ' Rated llorse Pcuer jgo Prame Un.1 T. 6 T5 ND4A D2 sign (,) Voltage 4-d o e,. - J n 7 R 3 Cycle 6o n g g, t y v. Full Inad Amperes RSd locked Rotor hrperes /8/e'7 ~ Ibll load Speed (rpst) / 1 LB-Tr squared) /960 Starting Torque (PT-13) MN[ jh. Pull load Torque M9[/ '. Efficibncy: Full d g?,. [ 3/4 886~ 1/2 M O/j ' loads Pcuer Factor: ' nill ' c9cI 3/4 -d W 1/2 8/ M loads D1 closure O aces Z 4,m e.oor-Net' Weight - /3 o o Temperature Rise: Dog. C Over Amb. So D2g. C Ambient <? o ' Insulation Class

d.,, e e ~1 Stator Winding Tnermal Davi :ey'eJ

/ Type of Eccrings -Z%,, 6,e.,7,,en /,,so Bearing Thernoccuples A./ o . Rotation Iroking at End Opposite Shaft End 4, wr a.c APPRDVED. FO *f A rt TP A N PJ T ON ~ l - Terminal Box M@ptlMf3EP.*g g MYnd Opposite Shaft End: Right // Inft OF PURCHABC l l Motor loads. Connegtg (T:g E Mfr.) Ca, m o_ype. . Conduit Box Patrcnce Opening - Main Inads .? P,,o a 7.,o Inches b .__l Cfl o & H i ti_. I n c. l Conduit Box E55GM@'q%5ningaticr: Aux. Inads / N/agt -,Q r. Inches NEw. ong Space IIcatern: Voltage //.5'v-Wattage 2oo7 l Pc;muts:

f. o San v> <.*a foerca AT g.,, -72 g m an.* '

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l /: ' nEM NO. A C l a-A ..:.C. 84 MOTOR DATA

b. b.

SERIAL NO b-F.W o 9 0 0 7 IMNUFACTURER MODEL NO. [ Nb.328#623oA S M E NO. H. P. A00 FRA!E NO. 4 3 A r' F 3 6 NEMA DESIGN O VOLTS 1/ / S O Ph 3 H: SO AMPS

2. G I RPM

// 9 0 TYPE N NET WEIGHT _Z7EO SPACE HEATER 65 120V HEATER WATTS 64T7 EFFICIEilCY: FULL 9k 3/h 90 D/ 1/2 89 LOADS' POWER FACTOR: FULL 87 3/h 84 1/2 7r> LOADS TEMP. RISE: DEG.'C OVER AMB. 70 DEG. C. ms. 46 TYPE OF BEARING bbu. DRIVE END BRG. NO. A % 9 A. 3 _3 4 P.2 /

4. 0 W E IL g 9 7~s OFF DRIVE END BRG. No. & L9 A A 3 O G 2 L4 P P C IL 2 19;,5 Ec,C0!OENDED LUB.

INTERVAL OF LUB. ~ }}- ELECT. UlG. NO. [c,., :,.. Rwor~ I.D '~ !.c.ci< ca 1%re t ' Ar> y: I M' PUMP DATA 2,j w SERIAL NO. [. 9 / N 4([.2 [ MANUFACTURER w-MODEL NO. TYPE./ M_ o_. Tu-b,mj CAPACITY IT. HEAD d d. 9 RPM MATERIAL CODE IMP. DIA. SIZE 72.T I d-- PRESSURE PSI TYPE OF DRIVE DRIVE NO. TYPE OF BEARIhCS: THRUST RADIAL BEARING NO. THRUST RADIAL REC 0f0END$D LUB. INTERVAL OF LUB. TYPE OF PACKING SIZE ~ PHYS. I1.1G. NO. FLOW DWG. NO. MANUFACTURER TfdG. NO.

'jS ITEM NO. A C. I O -O MOTOR DATA h6 SERIAL NO. b' h) 9 0 3 0 0 $ JUJIUFACTURER MODEL NO. T K 6.3 2 5 Y c. A.3 o A STYLE NO. H. P. R00 FRA!E NO. 634i830 NEMA DESIGN O VOLTS M / 4 O_ Ph 3 _ H: 60 AMPS 2 S. i, RPM // $ 0 TYPE M NET WEIGHT SPACE HEATER Yf5 HEATER WATTS EFFICIEllCY: FULL 3/h 1/2 LOADS POWER FACTOR: FULL 3/4 1/2 LOADS TEMP. RISE: DEG. C OVER AMB. DEG. C. A!G. TYPE OF BEARING DRIVE END BRG. NO. A E 9 x2 3 4 P 21 L o W L tt. i' $ 7'd. OFF DRIVE END BRG. NO. G 29 A A 3 o G 1. M P P L d-a f y T; REC 0!GEi;DED LUB. INTERVAL OF LUB. .. =., ELECT. D'lG. HO. PUMP DATA MANUFACTURER / h Eldis SERIAL NO. [ 7/ M d Uf MODEL NO. TYPE [ ? 'M ~ ~ CAPACITY ~ FT. HEAD 3 [, 7 RPM MATERIAL CODE IMP. DIA. SIZE 1f [ )( L PRESSURE PSI ~ TYPE OF DRIVE DRIVE NO. TYPE OF BEARINGS: THRUST RADIAL BEARING NO. THRUST , RADIAL REC 0f0 ENDED LUB. INTERVAL OF LUB. . TYPE OF PACKING SIZE s, PHYS. I7.10. NO. FLOW DWG. NO. MANUFACTURER DWG. NO.

,/.. a ~ rrEM ro. A C / o-C. I MOTOR DATA G. F J NToM ~

b. E.

SERIAL NO. MANUFACTURER MODEL NO. 6' N 0 3 2 6 X 6

3. 3 0 A STYLE NO.

H. P. 200 FRAME NO. 632( 836 NEMA DESIGN O VOLTS 4 / /> 0 Ph 3 Hz 60 AMPS 26.1 RPM // 9 0 TYPE k NET WEIGHT SPACE HEATER YE3 HEATER WATTS EFFICIENCY: FULL 3/4 1/2 LOADS POWER FACTOR: FULL 3/4 1/2 LOADS TEMP. RISE: DEG. C OVER AMB. DEG. C. AIG. TYPE OF BEARING DRIVE END ERG. NO. A B 9 A2,3M ball OFF DRIVE EilD BRG. NO. [s A 9 A A $ 0 G t uPPtA 23 qts RECOMMENDED LUB. INTERVAL OF LUB. ELECT. dig. NO. PUMP DATA ' MANUFACTURER //3,c.3m,, b f,, w SERIAL NO. [9/ fl o 4 3 o O 1b,,. ams bIQ TYPE MODEL NO. 0 CAPACITY FT. HEAD J4. 9 RPM MATERIAL CODE IMP. DIA. SIZE 28 k A' L.- PRESSURE PSI. TYPE OF DRIVE DRIVE NO. TYPE OF BEARINGS: Tf! RUST RADIAL ~ BEARING NO. Tl! RUST RADIAL RECOMMENDED LUB. INTERVAL OF LUB. . TYPE OF PACKING SIZE 3

j t

PHYS. DIG. NO. FLOW DWG. NO. MANUFACTURER DWG. NO.

/6:. ITEM NO. A C / O_O . 5:. "~~ MOTOR DATA O G k [/l A 0 IkC. SERIAL NO. b-FJ ? os o t o ~ MANUFACTURER MODEL NO. ' f k ( 3 M [ X d.2.3 0 A STYLE NO. H. P. A6d FRAME NO. S$4[ / $ 0 NEMA DESIGN b Sd ANPS k 5, A VOLTS 9/dd Ph 3 Hz RPM ll 9 d TYPE k NET WEIGHT SPACE HEATER IC4 HEATER WATTS EFFICIENCY: FULL 3/4 1/2 LOADS' PO'r7ER FACTOR: FULL 3/4 1/2 LOADS TEMP. RISE: DEG. C OVER MG. DEG. C. NG. TYPE OF BEARING DRIVE END BRG. NO. c.E L334 h/ L O w G h,. 5 c, q,$ OFF DRIVE END BRG. NO. $ d 9 A Al O 6 2. u 9 pet 2 3 g,p. RECOEfENDED LUB. INTERVAL OF LUB. g.. f' ELECT, ING. NO. PUMP DATA MANUFACTURER bm-cM2 h SERIAL NO. (7/ N0 4]- 3 / MODEL NO. TYPE c2. 'l jd_,3 i <a 0 CAPACITY Pr. HEAD 3 [- 9 RPM MATERIAL CODE IMP. DIA. SIZE . '/ d' k /- ' PRESSURE PSI TYPE OF DRIVE DRIVE NO. TYPE OF BEARINGS: THRUST RADIAL BEARING NO. THRUST RADIAL RECOMMENDED LUB. INTERVAL OF LUB. TYPE OF PACKING SIZE j.: 3 TO. PHYS. DliG. NO. FLOW IXlG. NO. MANUFACTURER D'.fG. NO.

L ll / 53.; [I8 /4 - ITEM NO. MOTOR DATA MANUFACTURER (- SERIAL NO. E o t//c 3.r ~. MODEL NO. .9/( UY ? /.5 // /(.I/ [ STYLE NO. H. P. 7f FRAME NO.,l h_ [ T S NEMA DESICN d AMPS 7d VOLTS U/[ O Ph .3 Hz dC RPM / 7 7.6' TYP5 M2I NET WEIGHT SPACE HEATER HEATER WATTS EFFICIENCY: FULL 3/4 '1/2 LOADS POWER FACTOR: FULL 3/4-1/2 I4 ADS ^ TEMP. RISE: DEG. C OVER AMB. DEO. C. AMB.. TYPE 0F 5 EARING [d Od dO DRIVE END BRG. NO. [0 Of 63 ~ bd M h ^ 0FF DRIVE END BRG. NO. RECOMMENDED LU3. INTERVAL OF LUS. k;[~. ELECT. DWG NO. '.%vi c.c fadde I/C i. GEAR SPEED REDUCER MANUFACTURER h cLh SERIAL NO. b.7/[ 6V '7-<'/ '7 ' MODEL NO. d 6 f d Y / ' 3'

SERVICE FACTOR

.2,87 / d 8 '[ 2-IIIPUT R.P.M. /7[6 INPUT H.P. 78~ RATIO ,' o u Y/'u T / c 9'.f~ INPUT DRIVE OUTPUT DRIVE CHEMICAL ELEVATOR MANUFACTURER CHAIN BUCKET. CHAIN SPROCKETS DRIVEN SPROCKET E'

TAKE 'UP BEARING HEAD BEARING -

m L s .~.y-l

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') r Fa;.:.2 xc. 3 d r T i xzxA DzSIcx A ~ VG OS 4 to O Ph .3 H: _ 4'O h2S Yd I?x /'? *),f c!?I Md NET WEIGHT ..r.n. n.,..a h,:,.An. .,a W,.n,,o-d.,.4.v.,, t r u 27.'ICIZZCY: 7JLL 3/L 1/2 L0its 7 20~.722 ?AC003: FULL 3/4-1/2 LCA23 , 33. .ud : snv. C v.VI.R u,.,3. sau.. v. n. CY?2 0E5ZLtIxG .DaIVZ ExD 320. xo. b 0 8 C. 0 3 ~ 3?? D21V zxD 230. 50. ~fo O 8 C. o 3 CooE H T N.sa/ B .,.,,. s,,,...,-..a3. IL.m.,:.aVn, _ oy L.>.

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c.:: ?ACccaza hd szaIAL No.- U fK / -5V7-c/- 2.

caz,x0. 2o5c V/ szaVICI ? ACTOS 2, ( 7 neue a.?.x.

/76o Ix?vT E.P. 7.5-aATIo /. 4 3 6/ 2 dy / 0 f.f' =cac DRIVz OUTPUO L3IVE ,.:. u C.r._, -.my.ync,. _a ..vi ACTUa,r.a., CZAIx BUCKET.- C. c,.. 330%.c.n.a ' ~ - 32IVIN's?30CIZT \\. - , :( l Ej: "122 il? 32ARIxG HEAD 32ARIxG - 1 .w.

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W ?Rl.'.3 XO. ) $ V$ '5EXA DESICX A VOLOS N Ph .3 E:: 4d AMPS d? d I?:: / 7 0.f~ cr?z /G Nz? wzIsn? ~ S?!CZ %2A723 HEATZR W/.TOS 3/L 1/2 0 o- -...., : a., a: s v.ac.u. 1, sua ?O'..'E2 ?!C003: FULL ' '3/4 1/2 LOADS .e ,s.,,..:.v.. c. <,.G. o C v,.b.3 A.,..u. ... a. a.:. : saw. T!?2 d?"32/GIXG DRIVE IND 320. NO. b D Ob O3 ~ 0?? D2IV: 253 330. XO. 6CS603 .Coe& N LN L' O IXm:., Y,.,., 0, LDa. .,.,.. : ua,s

a.. -us.

v.. .a x s.

.:,.. s<a G. X. u.,

s C.** *.D...C S T.? a .*,7 *u* n** ?"J.

c3371.cro?.za Mi SIRIAL No.

'~.[ - - $V 7 -d /- / SzavIcz ?Accoa 1, d. 7

cm xo. 2 4 ro }/ / - 5 I:s?ce 3.7.X.

/ 7 4 o- .u u.s.?. 75-RATIO /, 6 T V 2-st i o y.r I:.7v2 D2Ivz v n.:,..n. ,. VCs saA 4 w v:...i C.",.s v_'.V.tTO'.. a,- o X1CJ?ACTURZ3. i CZ1CX BUC?20/ \\ C.rr,.n... e,a,0v.rm n.a, i I i D?. VIN S?3CC:C7 ~ 69.l "J.'2 Il? 32A CXG EIAD 32ARING G 3 .;.g. .e.... . i. ......,..s

'. I /!. ee{*)

,' a icd: NO. F1- / A

!OTO3 DATA /E S37(A57 SERIAL NO. lK!UFACTURER fKG19S3~)Ah9 STYLE NO. C. sci ~o T000 MoDEL NO. H. P. 36 o/3 VI FP# 2 NO. TI% 5 NEMA DESIGN VOLTS 40 0 0 Ph 3 H: 6D AxPs 4i RPM 3560 TYPE l< NZsWEIanT SPACE HEATER / /f V HEATER WATTS S 00 3/4 1/2 LOADS EFFICIENCY: FULL POWER FACTOR: FULL 3/L 1/2 LOADS TEMP. RISE: DEG. C OVER NG. DEG. C. AIG. 40 8 y R ES. TYPE OF 3 EARING DRIVE END 3RG. NO. OFF DRIVE END BRG. NO. cod 6 D RECOXGNDED LUB. INTERVAL OF LU3. -l ELECT. Iua. NO. G 6H 3Ibo L c c.ce d 1 % r h at.u s 20S PU'O DATA MANUFACTURER SERIAL NO. ..MODEL No. TYPE CAPACITY FT. HEAD RPM MATERIAL CODE IMP. DIA. PSI SIZE PP. ESSURE TYPE OF DRIVE DRIVE N0; TYPE OF BEARINGS: THRUST ' RADIAL BEARING NO. THRUST RADIAL RECO CGNDED LU3. INTERVAL OF LUB. y . . TYPE OF PACKING SIZE PHYS. D'IG. NO. ' FLOW DWG. NO. MANUFACTURER DWG. NO. 9 7-s --.y.,, _ _ _ _ ..,.y

.//g.

TE: NO. 5 l - I B_

MOTO3 D/.TA 6E SERIAt NO. H E S 3 7 S.2 % 6 VJ::UFACTURER

6 14 6 l'N 3 ? A 3 T SnLE NO.

C u s'To ~ T O O O MoDEL n0. H. P. 3 0 Oh q.g 7p,g.e go, q ) qq $ NEMA DESIGN VOLTS Y00 0 Ph b Hz b3 /JTS 9I ~ RPM 3IbO TYPE Il NET WEIGHT _ SPACE HEATER I/6 HEATER WATTS TOO EFFICIENCY: FULL 3/4 1/2 LOADS 1/2 LOADS POWER FACTOR: FULL 3/L TEMP. RISE: DEG. C OVER /J3. DEG. C. AMB. 90 b '/ R E3 TYPE OF BEARING DRIVE END BRG. NO. OFF DRIVE END BRG. NO. -( REC 0! ENDED LUB. INTERVAL OF LUB. ELECT. If.lG. UO. bC N.3lbd PU'? DATA MANUFACTURER SERIAL NO. ~ MODEL NO. TYPE CAPACITY PT. HEAD RPM 1ERIAL CODE IMP. DIA. SIZE PRESSURE PSI TYPE OF DRIVE DRIVE NO. TYPE OF BEARINGS: THRUST RADIAL BEARING NO. THRUST RADI/1 REC 0!M;DED LUB. INTERVAL OF LUB. l TYPE OF PACKING SIZE PHYS. U.iG. NO. FLOW DWG. NO. FJJ;UFACTURER DWG. NO.

3 ./Lc ITFE NO. 6 l' 7. A _ MOT 03 D/.TA 0 SERIAL NO. FE S3?55$6 YRIUFhCTURER T K$iKFILhA5l STYLE NO. Cus3 - Tooo MODEL no.

n. P. 36o/39-f rRA:e g0.

4i55s NEMA DESIGN VOLTS _ 4 0 0 Ph O H bO D'PS 33i ^ RPM 36OI TYPE NET WEIGHT SPACE HEATER l /8 V HEATER WATTS $60 3/4 1/2 LCAD.i EFFICIENCY: FULL POWER FACTOR: FULL 3/4 1/2 LOALS TEMP. RISE: DEG. C OVER AM3. DEG. C. #3.- QO $/ $CS ~ TYPE OF BEARING DRIVE END 3RG. NO. OFF DRIVE END BRG. NO. Co os F m-RECO:E NDED LU3. INTERVAL OF LU3.

f ELECT. If,10. NO.

66N NIbD h s ul..' Ma.s s 2 PU'O DATA FRiUFACTUREF. SERIAL NO. MODEL NO. TYPE RPX CAPACITY FT. EEAD FATERIAL CODE _ ^ IMP. DIA. SIZE PRESSURE PSI TYPE OF DRIVE DRIVE NO.- TYPE OF BFARINCS: THRUST RADIAL BEARING NO. THRUST RADIAL RECO E NDED LU3. INTERVAL OF LU3. -i. . TYPE OF PACKING SIZE v PHYS. D'JG. NO.' FLOW DWG. NO. FWiUFACTURER D'40. NO.

~; ITEM NO. -5 / -;2. S t l4070R DATA SERIAL NO. F4 T37 55 s 7 M/3UFACTURER MODEL NO. STYLE NO. H. P. FRA.V2 NO. NEMA DESIGN i VOLTS Ph Hz AMPS ~ i EPM TYPE NEEWEIGHT SPACE HEATER HEATER WATTS 3/h 1/2 LOADS EFFICIENCY: FULL POWER FACTOR: FULL 3/4 1/2 LOADS TEMP." RISE: DEG. C OVER NG. DEG. C." AMB. ~ ' TYPE 0[ BEARING DRIVE END 33G. NO. OFF DRIVE END BRG. NO. RECOMME'DED LUB. INTERVAL OF LU3. ~ ELECT. DWG. NO. PU.'C3 DATA MANUFACTURER SERIAL NO. 4 . MODEL NO. TYPE CAPACITY W. HEAD RPM MATERIAL CODE IMP. DIA. SIZE' PRESSURE PSI DRIVE NO.' TYPE OF DRIVE TYPE OF 3EM1INGS: THRUST RADIAL BEARING NO. THRUST RADIAL RECOMMENDED LUB. INTERVAL OF LU3. P.. TYPE OF PACKING SIZE 5.4 _ PHYS. D'JG. NO.' FLOW DWG. NO. MAT. dFACTURER DWG. NO. .y .,w.

i S 5 R -fyF ITDi NO. 6 I'.2. C. _ MOTOR DATA MANUFACTURER I b-SERIAL NO. FE7:3 7 _f S s r MODEL 110. STYLE NO. H. P. FRAME NO. NEMA DESIGN VOLTS Ph H AMPS RPM TYPE NET WEIGHT SPACE HEATER HEATER WATTS EFFICIEIICY: Fl]LL 3/4 1/2 LOADS POWER FACTOR: FULL 3/h 1/2 LOADS TEMP. RISE: DEG. C OVER MfB. DEG. C. AMB. TYPE OF BEARING DRIVE END BRG. NO. OFF DRIVE EliD BRG. Nd. RECOMENDED LUB. INTERVAL OF LUB. "y ELECT. ElG. NO. l 1 e

a..m g.

l r e l

ITE : NO. ST-3A .., ' (' ~ mTOR DATA EY-3C GE SERIAL no. 2 E S37 4.195 mNurACTURER mDEL NO. f M G I 5 6.16, A 3 E STYLE NO. C.usTa % 1iooo H. P. 3o o/34f FRus NO. T 15 5-s nn:A DESIGN VOLTS M[oD Ph .3 Hz 60 Ares 3 40 RPM 369O TYPE K NET WEIGHT SPACE HEATER / [8V HEATER WATTS hoO ~ EFFICIENCY: FULL 3/4 1/2 LOADS' POWER FACTOR: FULL 3/h 1/2 IOADS TEMP. RISE: DEG. C OVER AIG. DEG. C. RG. 90 I3 Y E G5 TYPE OF BEARING DRIVE END BRG. NO. OFF DRIVE END BRG. NO. CooE F RECOMENDED LUB. INTERVAL OF LUB. ELECT. Dh'G. N0'. GGR 3l60 S S A 9 D 6 A O 'D 007 Ins daRe,n C,tas, -g G

== 0he. .y [ ne

I.(#

~

I a d_ p m, I G s a,.. ITEM NO. GT-33 MOTOR DATA SERIAL UO. ICJ:UFACTURER MODEL 50. STYLE NO. H. P. FRAIE NO. NEMA DESIGN VOLTS Ph ' H:: NFS RPM TYPE NET WEIGHT SPACE HEATER HEATER WATTS EFFICIENCY: FULL 3/L 1/2 LOADS

POWER FACTOR: FULL 3/4 1/2 LOADS TEMP. RISE: DEG. C OVER A?G.

DEG. C. NG. TYPE Of~B' EARING DRIVE END BRG. NO. ~ OFF DRIVE EHD BRG. NO. ~ RECO0! ENDED LUB. INTERVAL OF LUB. ELECT. IMG. NO. e l l m

9 eb q

,e e e a :s o.

IB5 5-ITE!! !!O. bbbb . :/ !OTOR DIsTA ' SERIAL NO. }&J1UFACn1RER I'0 DEL NO. STYLE NO. H. P. FRAME NO. NEtiA DESIGN VOLTS Ph Hz _ MFS RPM TYPE NET WEIGIIT SPACE HEATER HEATER WATTS EFFICIENCY: FULL _._ 3/h 1/2 LOADS' POWER FACTOR: FULL 3/4 1/2 LOADS ~'" TE!!P. RISE: DEG. C OVER MG. DEG. C. A!G. TYPE OF BEARING DRIVE END BEG. NO. OFF DRIVE END BEG. NO. I f) $ [j [,, [ /,A S g REC 0!? ENDED LUB. INTERVAL OF LUB. ELECT. I140. NO. e o O +

%e e

6 e e O

9 G

1 o a,, ;... m :.a. VA-5A!B 3 B - I B+ C. MOTOR DATA A bl M N c.6 SERIAL NO. MAf'UTACTURER l'0 DEL NO. - STYLE NO. H. P. AED FRA:G NO. D 80 0 9 NEMA DESIGN A VOLTS MSO Ph 3 Hz d0 AMPS '39O/ RPM // 9 8 TYPE 78AO NET WEIGHT SPACE HEATER /6 Y HEATER WATTS 660 EFFICIENCY: FULL .9 fl 3/h . $ $ 3-1/2 .9 47 LOADS ~ POWER FACTOR: FULL.93 3/h . T f Y " 1/2 ,?S7

LOADS O YflES.

4 ~6

Al ' A M 4 ' * # d d TEI@. RISE: DEG. C OVER AIG.

TU DEG. C. AM3. / 3 Q; - E m E/ES. Mdof ~ TYPE OF 3EARI1*G DRIVE END BRG. NO. ,OFF DRIVE END 3RG. NO. I AJ r u L. C L AII M EECO:<G DED LU3. INTERVAL '0F LUB. ~ ~7. - ELECT. DWG. NO. d 01 i A n.T 6 6 0 4 *) 6 - A., E. t i ' ' 81 1 + k- -[ f,,

a, t-h*,7 g g,f r'.,'(gc+,,

,q ) c .1 .g- ,y j-j k. e e e S ee e e O I g a l - ~~ r.- e e

'e r. i.. u .a 1Tzu x0. V A-2 6- ? D 7 D - / 6 3 5-?i Cc...'. d.. I ee = gg 7,,, MANUFACTURER k6/--/4N(E SERIAL NO. MODEL EO.- STYLE NO. __ H. P. /Af FRM S NO. 6'OO.'3 NEMA DESIcN A VOLTS 46o Ph 5 Hz [o O ReS I@3 TYPE 76Ao NET wzIcHT 19%b-RPM // 6 6 SPAC: HEATER //f V HEATER WATTS S 6O EFFICIE' ICY: FULL 'O 3 ' 3/1 .330 1/2 .9 I S LOADS' PO'JER FACTOR: FULL.917 3/h .S% 1/2 77Y

LOADS g 3 Rgs.

9.3 - N o n. m A f M a o f TEMP. RISE: DEG. C OVER A!G. 70 DEo. C. A:e. / as-eenesc. moo 4 TYPE OF BEARING 8A// [H6WY DdY) DRIVE END ERG. NO. ~ N* ,OFF DRIVE END BRG. No. 2 AJfu L. C LAI.r RECO:C2NDED LU3. INTERVAL GF LUB. -[ ELECT. DWG. NO.

4 c L E g s u p E 8.14 5 Y STE M

- c, g,. i;,, :,. -i m,e .:,a,, ~ .g e 9 g 4 e l t e O G T-i :.. (.'.0 l -.- .-m ..}}

ML20042A845

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