ML20054B759

From kanterella
Jump to navigation Jump to search
Testimony of Br Mccaffrey on Suffolk County Contention 2 Re Diesel Generator Relays
ML20054B759
Person / Time
Site: Shoreham File:Long Island Lighting Company icon.png
Issue date: 04/13/1982
From: Mccaffrey B
LONG ISLAND LIGHTING CO.
To:
Shared Package
ML20054B760 List:
References
ISSUANCES-OL, NUDOCS 8204190173
Download: ML20054B759 (14)
v • d • e


Text

{{#Wiki_filter:__ 4 N v y.. E I? 15 P 1 ca t-- I q) UNITED STATES OF AMERICA S Yf NUCLEAR REGULATORY COMMISSION c.$CI',j@b C 9 QY' 1 Before the Atomic Safety and Licensing Board 4 %/ V@ /^) In the Matter of ) ) LONG ISLAND LIGHTING COMPANY ) Docket No. 50-342 (OL) ) 1 (Shoreham Nuclear Power Station, ) Unit 1) ) i TESTIMONY OF BRIAN R. McCAFFREY FOR LONG ISLAND LIGHTING COMPANY ON SUFFOLK COUNTY CONTENTION 2 -- DIESEL GENERATOR RELAYS PURPOSE This testimony shows that LILCO has taken adequate steps to minimize the potential for dirt accumulation that could render diesel generator relays inoperable. In many cases, the relays are covered to prevent dirt intrusion. Other actions taken include the use of gasketed and latched access doors, and, where appropriate, filters on door louvers. In addition, under normal conditions, the large ventilation system I will operate only when the diesels are running.

Moreover, crushed stone and concrete around the control room building will also minimize the potential for dirt accumulation.

gy 3 5 / / O204190173 820413 PDR ADOCK 050003gg T J

UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION Before the Atomic Safety and Licensing Board In the Matter of ) ) LONG ISLAND LIGHTING COMPANY ) Docket No. 50-332 (OL) ) (Shoreham Nuclear Power Station, ) Unit 1) ) TESTIMONY OF BRIAN R. McCAFFREY FOR LONG ISLAND LIGHTING COMPANY ON SUFFOLK COUNTY CONTENTION 2 -- DIESEL GENERATOR RELAYS 1. Q. Please state your name and business address. A. My name is Brian R. McCaffrey. My business address is Long Island Lighting Company, 175 East Old Country Road, Hicksville, New York. l 2. Q. What is your position with LILCO? l A. I am Regulatory Supervisor for LILCO, responsible for managing the Nuclear Regulation Division of the Nuclear Operations Support Department. In addition, I am responsible for managing and coordinating the Company's efforts in the ASLB licensing proceedings. _2

. 3. Q. Please state your professional qualifications. A. My resume, which appears on pages 11-13, describes my professional qualifications. My familiarity with the issues raised in SC Contention 2 stems from my in-volvement in both licensing and engineering matters concerning the Shoreham plant. Immediately preceding my current assignment, I was Manager of Project Engineering for the Shoreham station; as such I was responsible for engineering and licensing of Shoreham. I have been involved in the Shoreham project for nine years. 4. Q. What does SC Contention 2 involve? A. It raises the concerns that dirt accumulation on the diesel generator relay contacts will cause a malfunc-l tion of the relays and contribute either 1) to a fail-l ure of a diesel to start on command, or 2) to an unde-l sired trip of a running diesel. 5. Q. Has Suffolk County more precisely defined its con-cerns? A. Yes. The County indicated that its concerns focused on whether the following actions would be taken to i minimize dirt accumulation:

+ . 1. will relay panels in the diesel generator rooms have gasketed access doors and filtered ventilation louvers; 2. will the main ventilation system be l operated continuously only when the diesel generators are running; and 3. will the air intakes to the diesel generator ventilation systems have con-crete directly under them, with crushed stone several inches deep adjacent to the concrete? LILCO has taken these and other actions to minimize dirt accumulation. 6. Q. Let's discuss all of the steps, including those just mentioned, taken by LILCO to ensure that the diesel generator relays are not rendered inoperable by dirt. How many relays are involved? A. Approximately 90 control relays in three diesel gener-ator rooms. 7. Q. Are these control relays covered? A. Some are covered but the majority of them have open contacts.

. 8. Q. Is it necessary for those relays having open contacts to be covered? A. No. These relays are used in 125-V de or 120-V ac control circuitry. The voltage level present in these relays is sufficient to overcome the resistance of contact contamination, if any unexpectedly occurred. 9. Q. What about other relays? A. There are approximately 12 control relays which will be switching low voltage (12-V de or 24-V de). Contact contamination and dirt accumulation will not be a problem because these relays are covered and the contacts are not exposed to the environment.

10. Q.

So all low voltage relays are covered? A. Yes.

11. Q.

What other steps will be taken to minimize the possi-ble malfunction of these relays due to dirt accumula-tion? A. There are three types of action that will be taken:

1) minimizing the potential for dirt accumulation,
2) maintaining the relays in a clean condition, and
3) testing the relays to verify proper functioning.

. 12. Q. What action will be taken to reduce the potential for dirt accumulation on the diesel generator relays. A. Three steps will be taken to minimize the potential for dirt accumulation on the relays:

1) controlling the amount of dirt permitted to get inside the relay panel enclosures,
2) controlling dirt in each diesel generator room, and
3) controlling dirt outside of the control room build-ing in which the diesel generator rooms are located.
13. Q.

Let's discuss these steps, beginning with the relay panel enclosures. First, on which panels are the con-trol relays located. A. In each diesel generator room, the relays are located on the control panels -- one for the diesel and one for the generator. Relays are also located within a motor control center panel.

14. Q.

How is dirt prevented from entering the control panels? A. Let's discuss the generator control panels first. They have louvered openings for ventilation, which are protected by filters. The panel doors are gasketed and mechanically latched closed which is effective in preventing dirt intrusion.

. 15. Q. So, in other words, the sole avenue for dirt to reach the relays is through the door louvers--which have filters? A. Yes, that is correct.

16. Q.

What about the diesel control panels and the motor i control centers that you mentioned? A. They have gasketed doors which are mechanically lat-ched closed; there are no louvers.

17. Q.

So no dirt should reach the relays located within the diesel control panels or the motor control center panels? A. That is correct. The use of gasketed access doors as well as filtered ventilation louvers is one action that Suffolk County indicated would minimize dirt in-trusion and accumulation.

18. Q.

You mentioned earlier that steps would be taken to control dirt accumulation within each diesel generator 1 room. What are the steps? A. There are a number. The first deals with the ventila-tion system. When the diesel is running, a 35,000 cubic feet per minute supply fan draws air from I ~

, outside, through the screened air intake, past an inlet damper, and exhausts through ducting approxi-mately 15 feet above the floor. The control panels and motor control center are below this duct. The air is discharged horizontally into the room in the direc-tion of the exhaust damper which is located on the wall opposite the intake. Air flow is directed away from the panels. Under normal conditions, when the diesel is not run-ning, the inlet and outlet dampers of the large venti-lation system will be closed. The air is exhausted from the room by a separate 1350 cubic feet per minute exhaust fan and associated exhaust damper. Supply air is provided by infiltration. This design minimizes air changeover within the diesel generator room and therefore the amount of dirt intrusion. The County indicated that use of such a ventilation system would be a second step that would minimize dirt accumula-tion.

19. Q.

What other actions have been taken? A. The walls within the diesel generator rooms are painted to a height of eight (8) feet, and floors are covered with an epoxy coating system which minimizes dirt production from concrete.

. 20. Q. You also mentioned that steps would be taken to minimize dirt accumulation in areas immediately adja-cent to the control room building. A. Yes, upon construction completion, there will be 3 inches of crushed stone, on polyethylene, in the vi-cinity of the diesel room air intakes, which are ap-proximately 7.5 feet above the ground. This crushed stone will extend from the control room building wall a minimum of 20 feet toward a paved access road. Moreover, below each air intake is a concrete pad, which is the access hatch to a service water heat tracing cubicle. The use of concrete under each air intake with crushed stone adjacent to the concrete is the third and last step taken that the County indi-cated would prevent dirt accumulation. All other areas will be landscaped with grass or paved surfaces as shown on the portion of construction draw-ing FY-3D, which appears on page 10, below.

21. Q.

Please discuss the maintenance of the relays. A. The relays will be cleaned and checked during refuel-ing outages (every 12 to 18 months). In addition, the diesels will be started at least once every 31 days, to ensure that they are working properly.

l _g.

22. Q.

Mr. McCaffrey, would you please summarize your testimony on SC Contention 2? A. LILCO has taken steps to prevent dirt accumulation on diesel generator relays that might interfere with their operability. These steps not only include, but go beyond, those steps requested by the County.

///-( '/$f

y. W ~~E5 !-$ Y,0?>

.E5L%$ W x,~ N X - /.-% v m,p ;;. w.e g.9.w - ~~}'*g.pf-7.f -M. - w[.,b,.:. %'M %'%w: .e p 47 cWm . -t; ',,,A s t.., ~ 9 77.7 ' m %, ;,\\g M....,S,. N M4 ~ .g ,y f f3,, ' h e_.'. ' V,, E, N'[ Y".., D' .r j ~ g ['k l l 7 ,N*rx,Ot*D $~ HCROGEN g s w.r y s ony 1 /- 8 'J.6 ',,[ f_.. CONCr' ';E 'y , E 0 07 2 44 > / " ,E-M

y,.H tr.-

/ incs.f.e. s, I

  • - r -
  • el l

_) sist ctuyio _,,, f a Un M F N 1 .. ~. - rt V

  • ,tr k 2* M Ij q / /'

t f r.ir .En -W"""' cr. t y ,,'.',,(, d?% 0 cfcy

a. r " --

v..no ucaa.c :..c .?el [ E. A <$ 'e n s M3.J N ,,, s. IE-*/ (3)e s co.o',' \\ M5i*h2'196 _4 ) [. 5@ -

- V'

t C 7 !;* l ' Yd w.ur d ;y $ , W **-# Pt

  • nsit.-.a et t ea u

'],. . $2'.j %^ g N N. lI Acax sir. ; *I F? P l B'. l . \\.. j, ' / ' ' ' ',. i m .ra+ U , g ]_. L, _'_. '.:.* g 1 j j. gJUs< E{lW __... _,k.

t ?"

.4,,M gg/

(

t *, ? M.g % ':.,*[, y 1 { ai n g 3 cy,, C6487C'8 '\\,) /! [ l. ~ . J, _ 2... ' ou,, ppvo Hov e,C ,1. e } a .. o cw'. . %) 4.- E "a M ;,,. -. r-Ms.'L ~.. t e c c...., n ,f E h, uet ,4._,.. A,. p g ' p n lu au ....s u . 'j f i y g-G l suo.: a /. *s,*~ v '. .' m ' [ / w 3 L,a,,,,,

  • b

'l" 7 c.o pi . vag ,-ica r*~, j I,I y(W ;Ty j ,/

o.

o s. C 4

c..

.,r, v k* W \\ ,,cc y. e ..c, ,/ po,na wac w t-

5..,.

/a., i t .,e s i.. e etc l ; s e f f, .h. 'G.. 1 p j ' %y. u.. / pr ~., i i Y,c l l b / O f r.$Pf. '/, W. i ,,,,,J.,. IAU.\\ /

. _ t xd

/ trt q ". a.$ / ,- :'.7,- 7 tam i y Q g ' e f' '/ - *[. so iAN'm 4ij/..,'. ' b .,,~; =,,, l d zi

  • 1""

S L> s/ 7%$ D' e xrrACHMEN'D ~ ~~ u.t---,,w.3 h 33:a, _u/ f',. .'A- ./ ouunso cA. =. .TO EdCR N0_ b M.p / g e; c#,,., <c u~., e ,,,, o 4 'c t '" #'. / v. s g "I ,.,.s n(,,' - j :n PAGr Or-e-u, we u ..1.,. e i., y u ,c p r en .- q, scosed-gg e /A /r .J Oi.sa.,p:... N.,,,

s*wAL.

/ i, o >. 8 * ' S ' \\se' h, ~~g I e 4 t' \\ 1 ',WC.) A or a ' d - - + -? lj$ [ ' k h, l ~,.n./. v y N. xi

  1. h/*a e

/ ' ',.\\, f r e %~ -, o ? / / l '*\\*) i fa.,,,. b'- N . j. (_,, roi l e d.. i, f 7 P f f { /m/ /// d.. 9 i,. - - _, _ 4.u a,ost t* . ',J [' ', b. i i .J k h. ')

d. :

I.$'t t ,7 5[.OM*ES8 *- / c.-~.j. mc tm

  • n-a t 4, p

.m, g,'.s p ;. s...,'.y J-.a J ~i b ;y /'I<///'c.'- '{ - c tiu N } is. /<# .g .m .a 0), , et aa i, 4.-

n. $ a,..

j f' L( AY 6t ;. 'ts

  • '<.'t

( A "X

  • M C'O E @**
  • l' a.

]g i 5. emf P W 9 C I'[ ! I i N" I# *y~~~,a fO l' f b e 2 g..s,,.._,_ bC U t* ( l i .*.h, v i l ', e.* t. ' d. N C AND 6 .I .m t t * % I" ; i s ' % e. e. i *. j.. n n 5 t tN AGr o / * ' / ' / *,.*. ... t c '. }. -* ;" 7,-' i,^7".'P..,. ~_ a.. / _ .g.= i, h s '3-, . c., _,J.- t.p. : {c u O . a t. A .w. w-i, m - + - f oft D7Yt * ~ ... w ' w._,l l,. '", ' *~ ;. :.h r" ~ n m,. n ~2 a ..::.u pu %gy .cm,,,c. t e *,. rr an..u. S.ca p. y 4..f,:: i, ~ ( i.,. I.. t-m m y -'V-n t%1. 3... - v,., r--.-.w- . en- -...g ,,i,/< e g, e g n.. fe. ,,-p,g y-.- y_.. -.;;. m. r,,. t e c.e u s, . - -:, x - u.. wv t..- u ' 4 J.,C.1 ,o,. i g. b. g;;.c_;; ;;;.,. 2.;:.7,;.. - - .,%,,,s @t E "f's @ ~'*# .n

  • " # L '8

["' ?'W s,a'.' .g. ., r = -,. - y" / f f7 t L..,. _.,c me 1 h.s;, 7, *,i, s._ e r.?',M,,[an .r=",s*;--. 5" t .. s e 6.... s n OSr,,,,, C.w:t JMM.:i - rl r ntt rr.;p w M .:nm .s L . 4JU,e 7 * '~s L }f -pi g g; ;; s; er

i
  • c,

.l . "'; l .t. Ur v.? - M*. ', g,'n u n. . [g ""'di.L, - 9 NI p ,.,d u; ~ ec e ue g su n < u,,,,, .:. 4. - u.m.ac..l 1 x g eeswNc ". t- .4 r-

  • - m

.e in r2e J r. .a n. CMC 9,1-2 j u i.,' 4 . ed I l i i ,1 'I C r r.:i E /.. D :NG fN .._,,.,s..

3 g i, [
    • .y \\

g ,,, l j, .,,{j, - i t _L_....__.._._= - ~ ~..

q j q, j ;, q

> =.... _

f..* *,.

,t.h..., I I., - _.,$ q - v = g-n .N = g, [.bd,. -T IN '3 ". ,'.i. 2h f - l t ,g O [ t O h,hk., */l k. i. .o [ t. 3{ E(, ,o.e,.,.,.s n r -: J***"" ,. t.., s ,rtt m too., s J..,.: .. o M. u t_e.,t-d, g, s i V N y. s

= = =

r, s : u ;u.m..a e.. Q D ), g - - w- _ ; __." ' p t,,, ( s ..nc-n, .. _'_ L L- -> - ' m.,. u s ,n 9.,,:. o_y%. _y - - " r _4 , W,_ __ ,-6..,--- - " '~ g ... - -{ _g g,rtry _____ Uh s I.D W G ,_ e..?.".. r;. y. (' '.'. -- } - l __. 5v~m .,. ~ v ,.w --3* *..-- ..-[' ) ~....c j c'a.d ss --7 O r5 N. wm; x ' /,[ c.e.rc..e l L,,g s } M '~ h .. c. 'II ~ ., ' c M 6 * " ei f ' EE L-9 O* 3 Yq- ., o..v' ', g.'Y i m,c.s,Yr. &. N - - __. #.%:: c:.:; - -.- ~; L.c., cu t m-

s. n ::.

,,..,,. l ~ ..,,3y, ,.,,t~., IG 47. 3 ;. a fd.' ~~ 4 .m. m.. $ g g yp) G [- n ~-

r- - PROFESSIONAL QUALIFICATIONS Brian R. McCaffrey Regulatory Supervisor Long Island Lighting Company My name is Brian R. McCaffrey. My business address is Long Island Lighting Company, 175 East Old Country Road, Hicksville, New York. I have been employed by Long Island Lighting Company (LILCO) since 1973, and have been Regulatory Supervisor for LILCO since November 1981, responsible for managing the Nuclear Regulation Division of the Nuclear Operations Support Department. In addition, I am responsible for managing ano coordinating the Company's efforts in the ASLB Licensing Proceedings. The Nuclear Regulation Division will support the operation of the Shoreham Station in coordination of all NRC licensing activities, the Nuclear Review Board and the manage-ment of the Indepenaent Safety Engineering Group. I graduated from the University of Notre Dame in 1967 with a Bachelor of Science Degree in Aerospace Engineering. I re-ceiveo a Master of Science Degree in Aerospace Engineering in 1972 from the Pennsylvania State University and a Master of Science Degree in Nuclear Engineering in 1978 from the Polytechnic Institute of New York. I completeo a General Electric BWR Design Orientation Course in 1978.

. My professional experience began with my employment with Grumman Aerospace Corporation in 1966. My primary responsi-bilities were in the areas or aircraft aerodynamics and flight test stability and control. I joined LILCO in 1973. I have held the positions of Associate Engineer and Engineer in the Power Engineering Department (1973-1975), where I was involved with plant engineering for both fossil and nuclear power stations. I then became Senior Engineer in the Power Engineering Department (1975-1977), with responsibilities as Project Coordinator for gas turbine installations and Lead Mechanical Engineer for nuclear pro-jects; Senior Licensing Engineer for Shoreham Nuclear Project (1977-197o), with responsibility for the licensing activities leading to an Operating License; and Project Engineer for Snorehem (1979-1980), with responsibilities that includeo directing Project Engineering and the Architect Engineer in engineering and procurement for Shoreham. I was assigned in 1980 as Assistant Project Manager for Engineering and Licensing (in July 1981, retitled Manager--Project Engineering) for Shoreham. In that capacity I was responsible for the overall engineering ano licensing of the Shoreham Station. My organization directed and approvea the engineering efforts of the Architect Engineer ano Nuclear Steam Supplier, and was responsible for directing the activi-ties leading to an Operating License from the NRC. I became Regulatory Supervisor in November, 1981.

1 A I am a Registered Professional Engineer in the State of New York. In addition, I am a member of the American Society of Mechanical Engineers and the Long Island Section of the American Nuclear Society. l l l l l l l ..}}

Retrieved from "https://kanterella.com/w/index.php?title=ML20054B759&oldid=4499671"