ML20128H456

Followup Part 21 Rept Re Disintegration of Balston 21554-1 Automatic Drain Float & Air Piping Filter Assemblies Mfg Prior to Nov 1989.Caused by Contaminants in Air Start Sys. Customers Should Order Air Filters Mfg After Nov 1989

ML20128H456
Person / Time
Site:	Beaver Valley, Haddam Neck  File:Connecticut Yankee Atomic Power Co icon.png
Issue date:	01/25/1993
From:	Galeazzi D MKW POWER SYSTEMS, INC.
To:
Shared Package
ML20128H448	List: ML20128H445 ML20128H456
References
REF-PT21-93 NUDOCS 9302170042
Download: ML20128H456 (11)

Text

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REPORT NO. 10CFR21-0063 JANUARY 25, 1993 10CFR21 REPORTING OF DEFECTS AND NON-COMPLIANCE COMPONENT: Automatic Drain Float - Balston 21554-1 Air Piping Filter Assembly - A912A-DX and A913A-DX SYSTEM: All A912A-DX and A913A-DX Air Filters Manufactured prior to Nov6.nber 1989 l

O CONCLUSION: Defect is reportable in accordance with 10CFR21.

PREPARED BY: / b DATE 3 Donald D. Gale zzi, Engineering Manager APPROVED BY: DATE /

M. Vann Mitchell, Quality Manager Post Office Box 1928 e Rocky Mount. North Carolina 27802-1928 e Phone: (919) 977-2720 y TWX; (510) 929-0725

• F AX: (919) 446-3830

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1 9302170042 920125 PDR ADOCK 05000213-

,. / REPORT NO. - 10CFR21-0063'

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RECORD nP Revisions REVTGinn DATE PREPARED T3Y APPRnVED BY PAGES APPECTPA i

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REPORT NO. 10CFR21-0063--

DATE: January 25, 1993 PAGE: 1 OF 4 O

\l STIMMARY This is a follow-up report to MKW Power Systems' notification to Mr. Thomas Murley of the NRC dated 9/24/92 (see Exhibit 1).

MKW Power Systems received notification on 9/24/92 from Duquesne Light Company, Beaver Valley Plant, which raised concern about the automatic drain float in the Balcton air filter, part number A912A-DX. During routine maintenance, Duquesne Light replaced the air filters and noticed the automatic drain float had disintegrated. Pieces of the float uere found in the bottom of the filter housing but did not get into the air piping. This report addresses the material composition issues relative to generic concerns. Users of Balston air filters with suspect automatic drain floats have been determined and will be notified accordingly.

COMPONENTS Balston air filters (P/N's A912A-DX and A913A-DX) manufactured before November, 1989, containing the 21554-1 automatic drain float.

EnSTOMenS AFFECTED The users affected by this notification are listed belows enSTOMER MKW ORDER NO.

Duquesne Light Company - Beaver Valley 51414 Connecticut Yankee Atomic Power Company 500598 DEFECT The material that the drain. float was made of disintegrated when exposed to the elements in the air start-piping system.

AN AT,VRIS The maintenance engineers at Duquesne Light discovered the potential problem during routine maintenance, and it did not cause-a. start system failure. The' particles were isolated in the filter housing which suggest that the material degradation was caused by' contaminants'in the air start system. These contaminants could possibly have an adverse effect on the inatorial; causing the rubber to break down when exposed in the system. Balston implemented a material change to the drain float

(y- in November, 1989, where P.he material was changed from a rubber

(_- composition to plastic (see Exhibit.2). The new floats have been installed in the system and there have been no problems detected.

, ,' ' REPORT'NO.: -10CFR21-0063' DATE: Janunry 25, 1993 PAGE: 2 OF 4

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,/, OnRRECTTVE ACTTnN Customers should order the air filters manufactured after November, 1989, which consists of the 21552-2 automatic drain float made of plastic. This design has been shown to withstand contaminants that enter in the air start system.

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.- - .' -REPORT NO : 10CFR21-0063

-DATE: January _25, 1993  !

.PAGE:- 3 OF 4 ^!

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l EXHIBIT 1 (1 page)

NOTIFICATION TO NRC DATED 9/24/92 O

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September 24, 1992 Mr. Thomas Murley Director - Of fice of Nuclear Reactor Regulation 11555 Rockville Pike Rockville, Maryle.nd 20852

Subject:

Potential 10CFR21 Finding

Air Piping Filter Assembly i Balston Part Numbers

A912A-DX and A913A-DX

Reference:

10CFR21-0063

Dear Mr. Murley:

This is to advise of a potential 10CFR21 finding regarding the i

starting air piping filter assembly, Balston P/Ns A912A-DX and A913A-DX, sold to the following customers by MW Power Systems, Inc.:

Duquesne Light Company - Beaver Valley (A912-DX)

Connecticut Yankee Atomic Power Company (A913-DX) r This filter is used in the air start piping to the diesel engine

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l air starting motors. During routine maintenance, Duquesne-Light replaced the filter and noticed the automatic drain float had disintegrated. Pieces of the float were found in the bottom of the filter housing which prompted an inspaction of the air start system. The maintenance engineer reported that the float particles were isolated in the filter housing and did not get into the air piping. This condition was found during routine maintenance and 4 l did not cause a start system failure; however, system degradation l could occur if this condition persists.

f MW Power Systems is currently investigating this potential defect with the filter manufacturer. A formal report will be issued when the inspection is complate.

If any any additional information is required, please conta't c vann Mitchell at (919) 977-2720.

Yourc ery truly, MKW POWER SYSTEMS, INC.

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V/b An M./Vann Mitchell

, ,, Quality Manager l *

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. .' REPORT NO.: 10CFR21-0063 DATE: January _25, 1993 PAGE: 4 OF 4 0

EXHIBIT 2 (4 pages)

BALSTON AIR FILTER DRAWINGS - P/N A912A-DX

- PARCH 1989 DESIGN

- NOVE?,iBER 1989 DESIGN O

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?_92 op 2 r y , g ej.e _:o c ca. ac u 9 913.uma - ,,

p,ou 4 i 1 -!

REPLACEMENT PARTS FOR TYPE 4912A Q ITEM [1 DESCRIPTION _

PART NO.] MAT'L H .

1 _ HEAD 9110 )= 1/ 4 ALUK f 2 80WU 91 11 0 '

At,UK l 3 '

COLLAR -

91 LSO ALUM

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4- TIER 30_ 91012 304_SS _

5 'iH5 HEX NUT 12699 S STL 5 l ELEENT RETAINER 91 ISO NYLON  ;

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7 DEMISTER AGSY 91450  ! NYLON S,9,10 SEAL) SET _ 22Q91 _ _ BINA 11 1 Fil.TER TUBE 100 t 2 ! 3 ---"

12 SUPRORT CDRE S$aiCO*12- 6 STL (+3

] AUTdHATICDRAINKIT h -----

iMANUAL DRA!N KIT 21!553 "-~

fB

__ lMOUNTING SRACXET KIT 11037 '

STL/PLO @

3 l

(1 SPECIFT FILTER TUBE GRADE @ = OPT!0NAa PARTS i

l CRDER SY PART NUMBER AND DESCRIPT10N 4 ) 9 12 OPT]ONAL 2 10 13 14 15 Q 5 i

8 3 7 11 :5 a-5N l

8

& h b lrx

<g m, J & \ t :1 ,g ' 3 my y  :

s p

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3.0 _

=-

76mm .

P J,

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D L

< lil L g  !

_ J __ 7 1/4' NPT OUTLET 1

& INLET PORTS 27"a

' O p 7.8-i --

i 835*

qI{ggggy ,

SP-12474 Jj; FILTER PRDOLETS

t. . . .. . ... .. ; . ua . . . . m u m  ! a ca issa

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TH3 04*eWNO O TM8 MIP6%TY o, u urou. we mo.1isior REVISIONS

'io',',"/',"f*/*4*f,jA' e REV i ECN.NO. DESCRIPTION INAME CATE

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A 0100 N 7E" ego l0H 7-87 B 0117 WAS 1.20 1 0 H- 7-87 C 0200 l}ADDED 2) F CHRINK PACX PES 5-88

__D 0202 1)ADDED 2) REVISED NOTE DMN 10-88 E O285 HEWRITTEN TO EXCLUDE 900 SERIES- .

8.R. 3-89

--- 1 . 4 --- NOTES; .

35mm 1. MATERIALS:

h .#- -

BUNA. SILICONE, ACETAL. ,

ArN

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ALUMINUM.ST.STL. 8 BRASS I 2.7 I 69mm 2. PRESSURE RATING:

250 PSI e 130*F 14 3.Smm L.

I *** F I b3 BUBBLE PACK IN CARTON i e' #95000 WITH LABEL AND '

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1 A COPY OF THIS DRAWING L

g a i l .

(-113) BUNA 0-RING 1.3 kin: as a LOCATED ON 32mm _

INSIDE OF BOWL b- gg U V O' 4 OCATED ON BOWL EXTERIOR S NoT:10 eE uSEo WITS e00 9/16  : = 3 _ERIES-HOUSINGS)

STRAIGHT THREAD 1/8 NPT FEMALE THREAD 4 SPACER /i,\ 15990 lA-12346 NYLON I 1

_3 NUT __

dh .21551-1 A-12198, BRASS 1 21 0-RING RETAINER 21552-1 A-11991 NYLON 1 I 1 lAUTOMATIG_ DRAIN *- 21554-! A-12185 NOTE I I NOI DESCRIPTION PART NO DWG NO MAT'L u

PARTS LIST OT'YXU 7ai.eRANCES,IXCEPT AS NQTED

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XXmm xu t .26mm

..mR BALSTOK 2 .=

XX.XXmm a .13mm N on smsion EXTERNAL SURFACys FILTER PRODUCTS MAT *L:

. i.exington, Masse->tusetts C@3 l ORAWNBYt DATE: TITLE n SEE TABLE LRS 1/26/87 AUTOMATIC DRAIN KIT l.

[u f:lNISH:

NONE cx0 SY:

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CATE: LTD.P/N LTD. O RG No. <

SCALE

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) .' WHERE USED:

1 :- 1 INC. ORO NO.

^ 'N-21554 i

(- - -

=

A-12187-

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\ 7~YPE M/Ell~ 1)X D'P /185 REPLACEMENT PARTS FOR TYPE A912A DESCRIPTION p/ 1TEMl__. _

PART NO _ MAT'L []

hv 1 l FEAD 91100-1/4 AltN 2

BOWL 91918 ALUM 3 COLLAR 91150

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AllN 4 TIEROO 91012 304 SS S MS HEX NOT 12699 S STL i B ELEPINT RETAINER _

91000__

NYLON 7 IDEMISTER ASSY I 91450 NYLON B,9.104 SEAL SET 22091_ s . _ BLN A 11 FILTER TUBE 100 t'l ) ----

72 SUPPORT CORE SS-100-12  ; S STL @3 Q --

AUTOMAitC CRAIN KIT 6552) ----

_ MANUAL CRAIN_ KIT 21553 / -----

lR MOUNTING BRACKET XIT 11037_l STL/PLO jH L

(1 SPECIFY FlLTER TUSE GRADE OP. DER SY PART Nt.MBER AND DESCRIPTION

$ = CPTIONAL PARTS l } X]

1 4 9 12 OPTIONAL 0) h8 3 7 11 6 to 13 14 15

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3lg y /.cq - p h J m~m~~ms 3.0 76mm g -- V#8iHMrAf g=:: !R W

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• ", 7 N - 1/4" NPT OUTLET 17mm E INLET PORTS

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p -7.S 193mm s-9 M 12TT@I*

1 FILTER P SP-12474^

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s...............RODUCTS .......mn ica - cn a s

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_______ _ _ _ _ _ - - - - _ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ^ - - ~ - ~

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{ f 4fl OAaWikis al flif PH&gtt l f1 r unw e .~n,,.iuo,

, b] o,. ' REV1SIONS

$ o'i E 77'd.f..[.L,7f, REV ECN.NC. DESCRIPTID1 gr.7..'..i.,u.m.*'""'"

-, NAME DATE A 02n ntvisto Ano ntonAwu tx.H 9 09

=

1.8 - -+ NOTES:

45.7mm I. PRESSURE RATING:

250 PS! e 170*F q 10 PSI MIN. OPERATING

, ~ PRESSURE f

2. BUOBLE PACK IN CARTON

1. 95000 WITH LABEL AND A COPY OF THIS DRAWING 1g N

2.5 5._ _ .

/=

1.2 [l Il (-113) BUNA 0-RING 31.Imm p' LOCATED ON N

NSIDE OF BOWL N

."(] N \ 4 LOCATED ON 00WL EXTERIOR (NOT TO BE USED WITH 900, e/Is -- N \ SERIES HOUSINGS)

STRAIGHT THREAD 1/O' NPT FEMALE THREAD 4 SPACER "

15990 A-12348 NYLON 1 3 NUT 21551-1 A-12190 BRASS 1 2 0-RING RETAINER 21552-1 A-11991 NYLON 1 1

AUTOMATIC DRAIN 21552-2 A-It796 PLASTIC 1

'NO DESCRIPTION PART NO OWG NO HAT'L OT'Y PARTS LIST TOLERANCES,E XCEPT AS NOTED

,X ....

L l-XXmm XXX i 25enm o/

-me - -

BALSTONa t.005 *N OR BETTER ON , FILTER PRODUCTS XX.XXmm : .13inm EXTIE RNAL SURFACES leningiort Mossochusatis O2173 MAT'L' DRAWNBY. DATE: Ti1LE PARTS LIST DLH 9-15-89 AUTOMATIC DRAIN KIT L(]"sm exo nv: one o n e,n tio oncho NONE gg4 mitnt usto. scA L E .- '

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INC f#fi INC Ulf ti NO

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