ML17208A542

Part 21 Rept Re Rosemount Model 1152 Pressure Transmitter Design Problem.Defective Transmitters Will Be Replaced W/Class IE Seismic Category I Qualified Rosemount Model 1153 Pressure Transmitter Prior to Startup on 800430

ML17208A542
Person / Time
Site:	Saint Lucie
Issue date:	04/14/1980
From:	Wethy C FLORIDA POWER & LIGHT CO.
To:
References
REF-PT21-80-205-001 NUDOCS 8005060001
Download: ML17208A542 (2)

Text

Sop Obgf PART 21 IIBH'IFICATINN3. ~ -~ ~ ~ o ~ i'Q"PANY DATE OF LETTER

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TERA LER CEKHL FILES 016 TEPA LOEB/(PA 1"% 5735 CENTRAL FILES (CHRO,'i',

CECGRAL FILES SS-3:.

UH/1'PA ti8 STl5 UH/l'PA I%8 S715 KGB PRELiMINARY EVSQATION OF THE ATTACHED REPORT INDICATES LEAD RESPONSIBILITY FO.";

FOLUM-UP AS SHCW BEUM!

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REV. 2/26/80

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'U~S+ HucEaar Regulatory Cocx9.samian s<

p Atlanta, Georgia 30303 From: )fr. C.. M. Pathy', PIant Nanagez

~ ."..:-. St+ Lucia.P.lank WPR &7 d Plarids Paver 6 Light Company Hfaai~ Florida 1 Sub)ect: HDfO FOR PACSDGLE .RA.'lRtXSS'iOH TO COhVZEK PRE'LPT REPORT.V3EE OCCb~ICE 335-80 l6 10 CFR P.~T ~i ",'-PAiCT Roee ou-ot Bode1 1152 preeeure rsneoitter B~sf-.c Problun

%is me=.a canifrts auz v rbal notfffcatfnn of the sub$ ect 24 h~>r repnr~able occurrence per Tech. Spic, 6.9.1.8Z a ad 10 ClFR ZEP to fc.

Austin Hardfn af your office on Frf Jay, Apti1 ll, 1980 Occur-.-ice". On April 1}, 1&oQ, it a:as'determfn 4 that the appli=

of certain Rasemount Nude'l52 Pzessuz~ Trarsnltters resultaJ fn a reportable sMuatian Xt has been cbsenred by the ranui acruri>r, and reported to ua that ia a 3.ir2ited nlrb-r of tba abave rc.)'1 tr "ns:-fttats an input preSSure ef ther OVer ar under the naeaaE Op atln.;1r a Cat aiba X fifth output, Mirhia, the normal ramage, This model transazj.tter in yaraUe3. vXth a second tran-.-~%tter by "

amnufacturer actuates Contaie~cnt V'acuum RelS.eg Valve cd-25 7 on one vacuum relief fane, An identical control arrangement ~=cist.a Euz Cuntai".;

ment Vacuum RelLef Valve FCV-25-8 on a z d .3-nt va=u r.}iez li. e.

TheSe ValVeS alSO perform a Cantaftai nt fSalatian funatiu-.. 4 tirade of a LOCA, Each contain=ant vacuum z.lief Use contains a ci>ace valve zo prevent floaI out ircm the contaLnaenc..

an ovorpressure oond1tiOn2 ii I eanta4nrenz,, the Bus~'.".aunt teans-...ltt~rg couM open valves FCV-25-7 and FGV-25-8 even rho1$ gh who se ind t'( n.

functions properEy. Assu-in@ a failure of the aback "alv "s, the iiiact on the Gysram is a loss ot containment fsolatiun c-p:.bilfcy.

defe"tive kransmftkers vill be replaced arith Clos- J.E, Sei~fc

'he

'Category T, qualified Res~aunt .'towel ll53 Pgessdxre Vt'sos:ticters This fs bs accoaplfsbed prior to start-up oX the unit on AgriL 30, E9iO. St.

Lucre l has been ange a4 Cn ro-fueling ~in-a )Ar "h 15, ZSSQ.

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fr'a PTanR 'lanager ~

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