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.

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CECGRAL FILES SS-3:.

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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 FrfJay, 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 X atln.;1r a Cat aiba 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..

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fifth an ovorpressure oond1tiOn ii 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.

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

'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.

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

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