ML19320C475

From kanterella
Jump to navigation Jump to search
Part 21 Rept of Potentially Defective Rosemount,Inc Transmitter in Control Sys of Air Conditioning Units.Info Is Provided to Assist in Determination of Significance as Safety Hazard
ML19320C475
Person / Time
Site: Hartsville, Phipps Bend  
Issue date: 06/20/1980
From: Giroux E
CARRIER CORP.
To:
References
REF-PT21-80-228-003 NUDOCS 8007170247
Download: ML19320C475 (29)
v • d • e


Text

ATTA01Ed IS A PART 21 REPORT FRCH IE MIL UilT - R00ri 359 Ehl PfRTbIDENTIFICATIONNO,%o-M Epo1 C0i P ATIY I M E S O v h M A SA A.

DATE OF ETTEPu

'h v/ P o D00ET NO.

DATE DISTRIBUTED %s-/ f o ORIGINAL EPORT SUPPEENTARY 2_

DISTRIBUTION:

9' EACTOR (R)i FUEL CYCE &

SAEGUARDS (S)

I TERIALS (M)

IE FIES IE FIES AD/ROI (2) lE FIES AD / SG AD/RCI AD/FFI'El AD / ROI EGIONS PEGIONS EGIONS VBiDOR BR. R IV VBiDDR BR, R IV VB100R BR, R IV LOEB / MPA FIB 5715 ffES / FG'E NRR / DDR AE0D iib 7602 LOEB / IPA PIB5715 t SS / SG SS-881 NRR / DDR (2)

AEOD FIB 7602 LOEB / IPA lTB 5715 NRR / DPM (2)

CENTRAL FIES 016 AEOD L18 7602 CENTRAL FIES 016 CENTPAL FIES (CHPf.)

CBITRAL FIES 016 CENTRAL FIES (CHR000 PDR CBITRAL FIES (CHR0" PDR LPDR CENTPAL FIES SS -3:

g PDR

. TERA LPDR EPA ACTION:

PRELIMItARY EVALUATION OF THE ATTACHED REPORT INDICATES LEAD RESPONSIBILITY FOR FOLLOW-UP AS SLON1 BELOW:

IE 3 NRR EBS ((

OTHER[

JD ROI So FFMSI THIS DOCUMENT CONTAINS POOR QUAUTY PAGES 8007170 M f B 6/0/c_

5

v ut6it.

f *a;r.nyy ec S,s ems, bvseft 7 o - aA9 -c June 20, 1980 Mr. Victor Stello, Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Co=aission Washington, D. C.

20555

Dear Sir:

~%

' pg pag.p Our telex of 6/17/80 notified you of a potential defect under the provisic.-

. -h _y q),

of 10CFR Part 21.

The customer, TVA, Knoxville, Tennessee, was also inferr by telex on that sane date.

This potential defect relates to a transritter manuf actured by Rosemount, -

which we utilize in the control system of the ccaponents furnished by us.

Our analysis, as outlined in the attached report, hypothesires events that could occur in the cperation of our equipment.

We do not have the capabi- -

of deterr.ining if the system parameters are such that our equipment is a

" basic cc penent" in which the potential defect could create a " substantia safety hazard. " We are furnishing available information to assist in that determination.

Our report, as required by 10CFR Part 21, is attached.

i O

Yours very truly, o

g gb w

Edward J. Giroux, Mgr.

Quality Assurance EJG/d Attach.

l O

2.s u 03 e Cupc a on P.O. Bex 4*C8. Carrier Parkway. Syracuse New Yctk 13221. Phone (315) 432-6000 G 5049

7 Carri^r Mac"r.ery

. Arc Sys ems.

hv5CC, i

I t

I June 19, 1980 i

i Mr. Gregcry P. liicely Tennessee Valley Authority l

Division of Purchasing j

Chattanooga, Tennessee 37401 l

l Cear Sir:

Our telex of 6/17/80 notified you of a pctential defect under the

. c-

.y y.

,Ck,VMJ provicicns of 10CFR Part 21.

cffice of Inspection and Inforcerent U. S. I:uelear Regulatory Cc=

non, Washingten, D.C. was also notified i

by telex en that sar.e date.

S.is potential defect relates to a trans-itter manufactured by Ese cunt, :ne.

I l

which we utilize in the centrol system of the corpenents furn3shed by us.

Cur analysis, as cutlined in the attached report, hypothesizes events that l

could cccur in the cperatien of our equipment.

We do not havu the capability of determining if the systert parameters are such that our equiprent is a

" basic cc=penent" in which the potential de fect ceuld create a " substantial safety hazard."

We are furnishing available informatien to assist in that deterrinatien.

Cur report, as required by 10CFR Part 21, is attached.

j Yours very truly, h..

g

_,// /y^-

^*

I

?

Edward J. Gircux, Mgr.

i Quality Assurance EJG/d Attach.

t O

,x-a
i" ee Oce:cru.cn P O. Box 42CS, Carner Parkway, Syracuse New Y0rs 12221. Or 0ne @!).!22 6C00 G-5C49 J:-

, - -. ~ -..

~.)

EDWARD *GiWoux NIC181980

^

T.Gli3 of11 1 M 1.52e nT CANZ 0039 15:52EDT 06/17/80 O.U M.

  • T Y c J r w.,,,c, _

TGH3 3115 i CAMZ INTG.

~-

ZCZC 1 PD SYRACUSE

^

PMS___OFF LCE OF [fLS_ff EC1LDN ANILENf_QRCEtENT,

U.S.

NUCLEAR REGULATORY COMMISSION WASHINGID1Lt__It C..

205.55 BT 6-17-80 URGENT ATTN:MR. VICTOR STELL0r DIRECTOR RU RJ ECIL.1.O_CER 21_U DlIflC elLOH_f_C L L.qu LN G_LS_.lE X T QF A N0lIFICATION TELEX TVA THIS DATE TCNNF9CFF UAl ! FY au_T,SORTTY DIVISION OF PURCHASING f

CB A T T AtLOD.G A i T.ENNE.S S.EE 37401 TELEX NBR 558417 ATTENTION, MR. GREGORY P.

NICELY nFF! EORIAAC.T_.11BR__2SK"-89' t 7 t. H AEdS_V T1 i F A N D__EH IE ES__ B EN D._N1] C LEA R._E LELS.

(.

AIR CONDITIONING UNITS SERIAL NPR 9S000 THRU 98011, MARK NBR Y - 7 3 A Cl_t0 3 - 4 _fl N T T R. Y74 ArtiO4-A ftNTT9 THIS IS NOTIFICATION OF A POTENTIAL DEFECT UNDER PROVISIONS OF 10 CFR PART 21_0N THE AIR CONDIT LO_t[IND_UN_LTS REEEREN.CEA_AF0VF e

DETAILED INFO UILL BE, FURNISHED FOR YR DETERMINATION IF THE R E EJtLIIS A R E__FltSIC_CDtf_QEENIS_IB_UBLC H T H E P O T EBlIAL_ELEEECl_._CRU. _LD CREATE A SUBSTANTIAL SAFETY HAZARD.

TNT 9__NOTIF_LCATION__TR A t C O _9 F T N G ri f RtLLS}EIL_T_0 T H F DIREflGR. OEEISE OF INSPECTION AND ENFORCEMENT, U.S.

REGULATORY COMMISSION.

EDUARD J.

GIROUX MANAGERr_GU Al T TY ASSURANCF MACHINERY AND SYSTEMS DIVISION r AEFT e R._e T R COtlIL Cn SYRACUSE, NEW YORK 13221 NNNN

?

3

'l' l

i I

TGH2 0060 14:01EDT CAMZ O_032 14: 03EDT 06/17/80 TGH2 3115 1 CAMZ INTG.

RCZC 1 PD SYRACUSE NY PMS TENNESSEE VALLEY AUTHORITY

__ D.LV.ISI 01LDlL EUhCHG.S.I(1G CHATTANOOGA, TENNESSEE 37401 ni ATTN MR. GREGOR'i P.

NICELY 6/17/30 REF. CONTRACT NO. 78K35-922373, HARTSVILLE AND PHIPPS BEND NUCLEAR PLANTS, AIR CONDITIONING UNITS SERIAL NUMBERS 98000 THRU 99011, MARK NO.

X P ;T!10 - 73ACJLO_3_- 6 UN I T S, X74ACUO4-6 UNITS.

THIS IS NOTIFICATION OF A POTENTIAL DEFECT UNDER THE PR OF 10 CFR PART 21

_ I! Ele _I.L E D_ I11F_08 M A UO N_W I L L_ B E_

IF THE REFERENCED UNITS ARE BASIC COMPONENTS POTFMUAl IN WHICH THE DFFE.CLC.0UI D CREATF

.s_S.UBSIAfEIAL _SAF"Y_ HAZAP D -

(

THIS NOTIFICATION IS ALSO OF INSPECTION AND ENFORCEMENT,BE FURNISHED TO THE DIRECTOR, OFFICE CO.MMISSION.

UNITED STATES NUCLEAR REGULATORY s

EDWARD J.

G I ROU)f,_M AtJAQs_R,_QU_ALITY ASSURAf1CE.,

DIVISION, CARRIER AIR CONDITIONING COMPANY,

_ M ACH,INERLANQ_SlS_TEMS_

13221.

SYRACUSE, NEW YORN NNNN h

N6 4

-_ _ m --:".n w e-

~

w e.-

9 4

4

- - ~

^^

~

?-

TGH2 0061 14'03EDT CAMZ 0033 14:05EDT 06/17/80 TGH2 3115 1 CAMZ INTG.

7 ZCZC 1 PD SYRACUlif$~NY

~~

~

PMS UNITED STATES NUCLEAR REGULATORY COMMI_S_SION WASHINGTON, D.C.

20555 BT A'TN*

MR. VICTOR STELLO, DIRECTOR OFFICE OF INSPE' TION AND

.n C

-)

ENFORCEMENT 6/17/80 SUBJEC.~;

10 CFR21 NOTIFICATION.

~

~

REF. CONTRACT NO. 78N35-822373, HARTSVILLE AND PHIPPS BEND NI1P1 F A R_.E L A N T C. AIR __CONDLI.IOllitLG_.UNLIS _ SERIAL _11uMBERC 98000 THRU 98011, MARK NO. X N WS - 73ACUO3-6 UNITS, X74ACUO4-6 UNITS.

THIS IS NOTIFICATION OF A POTENTIAL DEFECT UNDER THE PROVISIONS I

OF 10__CER i ART Q1_JN THE__AJE_.C.OBILITLQXIEG_U] LITS REEEEENCE.D A DETAILED INFORMATION WILL BE FURNISHED FOR YOUR D$ TERMINATION TF THF RFFFRENCFTl UNTTS AEF T4 A S I C COMEDNENTC lh_UHICF,IBE POTENTIAL DEFECT COULD CREATE A SUBSTANTIAL SAFETY HAZARD.

THIS NOTIFICATION IS ALSO BE FURNISHED TO THE DIRECTOR, OFFICE

._____GE__. IRS P E C T I OB__.s MIL.EMEORCEJ1 E N T, U N IIED_SlAIE S_EU.C L EAR _RE ELI LAI.O R Y COMMISSION.

EDUARD J.

GIROUX, MANAGER, GUALITY ASSURANCE, MACHINERY AND SYSTEMS nTUTCTON. rARRTrR A T o__ CO!LILI T T n NIN G r n M E A N r s__ e._r R A C U S E.1__.!

13221.

NNNN i

,,,,e

... +

  • f

Page 1 of 4 10CFR PART 21 PIPCRT 1.

Name and address of the individual or individuals informing the Commission.

Mr. Edward J. Gircux, Mgr.

Quality Assurance Machinery and Systems Oivision Carrier Air Cenditioning Ccepany Syracuse, New York 13221 2.

Identification of the facility, the activity, er the basic compenent supplied for such facility er such activity within the United States which is affected by the potential application problem.

Air conditioning Units 3.

Identificatien of the firm making the report.

Carrior Air Ccnditioning Ccepcny Machinery and Systems Division Carrier Parkway Syracuse, New Ycrk 13221 4.

Nature of the potential applicatien's prcblem.

Subject:

Potential Defect Per 10CFR21 TVA Packaged Air Conditioning Units TVA Centract 78K35-822373 Rosencunt, Inc. has identified a potential defect, as defined in 10CFR21, in ccmponents supplied to us.

Accordingly, we.re providing you with our report detailing the effect of this defect on or.

equipment supplied to TVA on the subject contract.

The potential defect may occur in the Resemount 1152 pressure transmitter which is part of the Auxiliary Building air cenditioning unit control syster.

Each air conditioning unit consists of a ecmpressor, cendenser, air handling section, filter and controls counted as a cc=plete unit ready for cperatien.

The Rosemount transmitter is used to sense condenser pressure and transmit a signal to a valve actuator.

The valve is pcsitiened to centrol water flew to the condenser and thereby maintain eendenser pressure between 285 and 205 psig.

10CFR Part 21 Paport Page 2 of 4

Rosemount, Inc. has stated that when the pressure transmitter is expcsed to a 140% over range pressure cenditien, a falsely low signal can be generated.

J The potential defect, as it relates to the operatien of the Auxiliary Building air conditioning units, can cecur if the cendenser pressure reaches approxirately 323 psig and above.

(Normal maximum cperating pressure is 305 psig.) At this pressure, the defect in the electrcnic circuit of the transmitter may result in a reduced signal being sent to the valve.

The valve may be i=preperly positioned to centrol the water flew.

The cendenser pressure =ay centinue to increase and eventually shut the unit down on the high condenser pressure safety switch.

There is also a potential fer artigueus cutput in an under range pressure conditien.

We have judged this as nct being detrimental to the cperation of the unit.

It is anticipated that the increased pressure, 323 psig and above, could only occur during a transient situatica such as a drastic fluctuation in watt.: temperature or a rapid change u. system cperating ccnditions.

If the unit is operating in its normal mode, it is not anticipated that the defect can occur.

C.

F.

Braun, specification 164-05, specifies a condense.

water inlet operating temperature range of 40c? to 100 F with a total cooling capacity of 367,000 3TUH.

S.e specificatien dces not describe in detail the load profile or rate of change of entering water terperature.

We feel that you should be aware of the potential cperational characteristics of the air conditioning units so that you can evaluate their perfermance in your specific applicatien.

5.

The datie on which' the information of the potential applicatiens problem was determined.

June 17, 1960 6.

The nurber and location of all in use, supplied for, or being supplied for, one or more facilities or activities subject te the regulatiens to this part.

HARTSVII.LE NUCLEAR PLANT A Carrier Job No. 8390D2002 TVA Contract No.

78K35-822373 Braun Identification Carrier Identification Shipping Date Item #

Unit #

Mar.k Fcr Req #

Serial #

Medel #

1 1

X-73ACUO3 1

98000 SCm 040-600-1 2/22/80 2

1 04 1

98001

-2 2/22/80 1

2 03 11 98002

-1 2/22/80 2

2 04 11 98003

-2 2/22/S0

10CFR Part 21 Paport Page 3 of 4 HAP.TSVILLE hTCI.IAR PLANT 3 Carrier Jcb No. 839C1D2002

"*/A Centract No. 78K35-622373 Braun Identification Carrier Identification Shipping Date Item #

Unit #

Mark For Req. #

Serial #

Model #

3 1

X73ACUO3 2

98004 50NA040-600-1, 2/22/80 4

1 04 2

98005

-2' 2/22/80 3

2 03 12 98006

-1 l 2/22/80 4

2 04 12 98007

-2 i 2/22/80 l

PHIPPS EEND hTCLEAR PLANT (ROGERSVILI.I)

Carrier Job No.

9390D2002 "vA Centract No. 7sF.35-822373 fCarrierIdentification Shipping Date 3raun Identification i

Item #

Unit #

Mark Fo* '

teq. #

Serial #

Model #

I 5

1 X-73ACUO3 3

98008 50NA040-600-1 2/22/80 6

1 04 l 3

98009

-2 2/22/80 5

2 03 :

13 98010

-1 2/22/80 t

6 2

04 l 13 95011

-2 2/22/80 7.

The corrective action recomended to negate this potential applicatien probler A.

Determination by the Cr ner of equipment status as a basic cc ponent in which the potential defect wculd create a significant safety hazard is required before corrective action can he recc= ended.

1 8.

Any advice related to the defect or failure te ec= ply about the facility, activity er basic cc=ponent that.has been, is being, or will be given to purchasers or licensees.

Attachments:

Rosemount, Inc. correspcndence dated March 14, 1980 Rosemount, Inc. correspondence dated March 26, 1980 Rose =ount, Inc. correspendence dated May 14, 1980 Carrier ccrrespendence dated April 8, 1980 Rose = cunt, Inc. ccrrespendence dated May 7, 1980 Carrier telex to TVA dated Ju.e 17, 1980 Carrier telex to Nuclear Regulate:y Ccanission dated June 17, 1980

e 10CFR Part 21 Report Page 4 of 4

For additional data or questions, please centact:

Machinery and Systems Division Carrir Air Conditiening Cc=pany Carrier Parkway Syracuse, New York 13221 Atten:

Mr. Edward J. Gircux, Mgr.

Quality Assurance Phone:

315-432-6964

/+f Y

Signed 46

,A

/_

Edward J. CIrcux,Mgr.

Quality Assurance Cate

((

em**

S

N N

.- \\

s I.-

N i__

N.

_ lose.T.CCDI RCsEMOUNT INC.,12cC1 WEST 73:5 s~ AEET / ECEN ^QAIFIE. VINNEsCTA 5522-

_ Marung Accress: 3.0. SCX 25129

  • MINNEAPCLIS. MINNESC - 154 TE!.; (512) 9415[60 T'NX; #1o'-575-3103 TELEA: 29-C :

March 14, 1980 n

C.V. Sales 8655 Sheridan Dr.

Williamsville, IlY 14221 Attention:

Procurement Manager

Subject:

Report of a Pctantial " Defect" or " Deviation"

Reference:

10 CFR Part 21

Dear Sir:

We have identified a potential " defect" or " deviation", as defined in the referenced regulations, in components that have been supplied o ycu.

As indi-cated in the attached report, Rosemount has the capability to make reccmmen-

.dations concerning the. potential " defect" or "devi ation" but we do not have the capability'to make the required evaluation as to whether-the affected ccmponent is a " basic component" and if the potential " defect" or " deviation" could create a " substantial safety hazard" within the meaning of '.0 CFR part 21.

Accordingly, we are hereby providing you with cur report detailing the currently a:cailable information with which you may perform the evaluation as required oy the referenced regulations.

If your evaluation indicates that reporting to the :;uclear Regulatory Commission is required, kindly provide us with a copy of the report which ycu submit.

Sincerely, s,

Ronald A. Ward Senior Vice President, Operations Acting Director of Quality Assurance

10 CFR Part 21 Recort (i) f{ame and address of the individual cc incivicuals inferming tne Ccrmii s sion.

Met Applicable.

(ii)

Identification of the facility, the activity, or the basic ccmponent supplied for such facility or such activity within the United States which is affected by the potential application croblem.

Rosemount Model 1152 Pressuis Transmitters with output codes "A" or "D".

(iii)

Identification of the firm making the report.

Rosemount, Inc.

12001 W. 75th St.

Eden Prairie, M14 55344 (iv)

Nature of the potential applications problem.

Reser.. aunt's Model 1152 Pressure Transmittar provides a specified linear cutput of 4 to 20 r,-A throughcut the calibrated range of cperatien.

Transmitter cutput at pressures over and uncer the calibrated range is not specified by Rosemount.

It has ceen obser.ed ir a limited number cf transmitters that an cutput bet-ween 4 and 20 mA can cccur with input pressures either ever er under the calibrated range.

Fcr an cver range conditicn, the ambigucus cutput is due to a unique condition in the transmitter electronics.

The result is that the cutput currer.t may drop belcw 20 mA.

In a limited sample size, the over range ambiguous output cccurred in 5". of tne transmitters at ambient conditions.

Referring to the ar. ached graph, this does not cccur until the ever range condition exceeds 140% of the upper range limit.

At that point a discontinuity occurs and the cutput current potentially will ce less than 20 mA.

Fcr an under range condition, the ambiguous cutput is cue to a different unique condition in the transmitter electronics.

The result is that the output current may exceed 4 cA.

In a limited

_._.___.. _ __ sample size, the under range ambigueus cutput occurred in 55% of the transmitters at ambient conditions.

Again referring to the attached grach, this does not cccur until the under range con-dition er.ceeds 100% cf the calibrated s:an.

At that poi :t, the output current potentially aill be grea:er than 4 rA.

1 In both the over range and under range conditions, the transmi :er reverts to specified operation when pressure is again wi-hin the calibrated pressure range, proviced the ever er under ;ressure condition was within specifiec limits.

Also, fcr both cver range and under range conditions, there is an increased protability -hat the transmitter cu:put will return to the ? to 20 mA cperating range if the transmitter is exposed to either a radiation er ele-vated temperature environments.

Resemount is reporting this situation so that th,is information may be fully analyzed by those responsible for the safety analysis cf the licensed activity.

(v)

The date on which the infccmation of the potential applications problem was cbtained.

March 12, 1980 (vi)

The number and location cf all in use at, supplied for, or being supplied for cne cr more facilities or activities subject to the regu-lations in this part.

Ncn Applicable (vii)

The corrective action reccmmended to negate this ;ctential acplication problem.

The safety system.Sculd be analy:ed to determine if a ;c ential applicaticn r ~ 9 er exists and appropria e correcticns : the safety syste huTd be implemen:ed.

(viii)

Any advice related to the de 'ec or failure to ccmply abou: -he faci-lity, activity, or basic ccmponent that has been, is being, or will be given to purchasers or licensees.

Not Applicable.

If you have any questions cr need more data, please contact Rosemoun Incorporated.

Rosemount, Inc..

12001 West 78th St.

~~~

Eden Prairie, MN 55344 Attn:

Chuck Cdegaard nuclear Operatiens Manager Phene:

($12) 941-55c0 Ext. 433

O O

O O

O o

O O

0 0

0 0

0 C

m 0

a

=

0 0

C a

o o

O

._, _ _ O w

3 O

3 A

e O

x u **

C C ~E O

y a

o

=

x o

o b

.E

=

W D h g

O W

8o n U %

o m

x C-o o

o e

X

-- T6

~

o-c x

w V

x o-o x

n a

O-o 5

0 u

C C

o O

  • O u

E C

C d

o 3

O c.

o s -

~

O c

e C C 3

V C

=

0 o

e_

c c

o

=

e e

e a

O

~

G O

m N

o m

E e

~

4O E 5

x O

c.

x 0

8 x

O x

I O

X g

x

=

C x

e i

ce x

u x

x e

.'O x

x Q

o e

O x

C e

w x

6 O

u x

o 8

x e

+

o x

=

3 o

x x

v x

O O

O O

v N

o e

o o

N o

y n

N N

N, e

r (s dwe ll[!w) leuS!S In din o J Of }!WS UUJ,( O J n s s a j d g g g, l, e

e

gcwbcaG hy C. V

$.Ob *=

Ho'd Pressura Rcgulating -fsten

~

  • The head pressure regulating systen schieves capacity centrol by naintaining a condenser pressure of 295 psig.

Th's is accenplished through c

....o, as

.ue C~w CE se. C C.,..s

~

....d-..c..~

w w

6

... C.w a - 2. =.e w-w o 1.<. 5 a.,.

,n.

.c.

-m

.w respense to higher eccling lead, and decreasing the eccling vater ficw in respense -

lever cooling lead effects this capacity centrol.

The underside of the differential pressura transnitrer senses :he refrigerant pressure inside the cendenser shell.

The transe' ter ccnverts this signal to a 4-2CnA electrical signal.

Tb_is is acconplished by pressurizing the tcp side of the transmit:er vi:h 285 psig fren the cendenser.

ne regulating

~~

valve reduces any aeditienal pressure :c :he tcp side of the transnitter te 255 psig.

In the ::ansnitter, a 10 pcund variable suppressien spring increases

he -ressure en the te; side of the transni::er diar.hrse-to 295 c.si~s.

Si:. - the bet cm of the d4.aphraia sees the actual ccndenser shellside pressure, any cendenser pressure in excess ~f 285 psig results in a deflec:icn cf :he diaphragn and an e1ec. 'c s#~.a' g - a_.=. e.-

~u.5. c...'..4 c

u'.e

'..ec-d p

a_

.e c~3w' cw..~ " c ' ". a.

= c c.c..

-e o

3 This signal varies fren inA to 2C 3. a s the cendenser pressure saries fren 2S5 psig or less to 205 psig or nore, ine pes.:ica cf the head pressure regulating valve en the condenser leaving va:er line saries fren fully clcsed at Lea to fully cpen at 2C A.

Tne 24 vel: OC pcuer supply prevides

5.e pcwer for the 4-2CnA signal.

In this nanner-the-head press e regt atin' talve thrc::les the flev cf cendenser c c 1_'..g

'. e ~u =_.

c..d

-. -". ' d e s a _= _ c c ~m.%.

c _.. '..' c. ' ~.

w~.=. _ c c ' -, - ". e.

n e = "-.1 '. -.. 3.s..=

v m

f.

cperati g leads.

C C'40E'iS U '/. AT B C C'

CL V A LV E l

COND.

X".!.TT V A LV E e.4 e. c. e,G r 9 e.t. S.

.,,.c.1 ~. I (P5;O)

.'.t A O C )

I l

i e_

.s.e..s

  • 4 l'
e..-c:-

t

~~"O k" O U'-

./

Y 8

4 6 ) _s 4N h

==..

y og 300 l

  • 6 3.'. O C 1'4 sw

..n u

,a g

.=

AB 4R.,

w na s

~+

s p :,e.

W1 g=2a M RoseOX)MIU soscucukr wc exn nSi um STREET / EDEN PMMNE. Ul'NEsOf A e o am usa uins).'C:.'s. uu*% SOTA 55'2s usag w m 7 E,1 gQ 0415M0 T'.VX S1047 %3103 Tfi D D M

.Y March 25, icBS Carrier Air Canditionimj P.O. Box 4801 Syracuse, ikw. York 13221

.,s

'Attentice. Kr. Ei Lk:. : a kn %ue Eeference:

P.O. 770157-FD GentI-m :

We have recently defined a chsracterir. tic with the 1]D Preszure TranFzirect electronic output of dich we feel yrv should be avsre since you have placed the above referenced order with us. This characteristic is ss fallon.

Easecot:nt's )bdel H32 Prust:re Trsasgitter pr-0vides s specified linear output of.4 to 70 =A throughout the calibrated range of operstien. IT=ar:sitt er cutput at pressurcs over nd un fer the calibrated rar.ge is no: specified by Ros=. cunt.

It has beca observed in :t linited number of trans_itt ers that an outpur between g

-4 and 20 nA can occur with it:put pressures e ti her over or tmder the esiibrated range.

s..

For an over range car.dition, the arbipmus cutput is due to a certsin conditica

.g

(

in the-transnitter clect runics. The result is that the output current.sy

'[..,

(dIcp bclow 20 A.

In a linited s:Leple size the ever rar.ge achizuous output

.O

! occurred in 5% of the trans ltters at ambient conditions. This does not occur li=it.

At rh t until the over ranze cor.ditien eyceeds 140t of the upper r2nge point a discnntimiity occ-rs and the output current will be less than 20 cA. --

4 For an under range coniitics the se'_.iguou.s output is due to a different 4

coniition in the tran<= itter cWetronics. The result is that the output

-- c:frF62'E p i m 4 4 mA.

-In a.:limitt&sa=ple sime the under.,rsage a:bicunus_ ____

-... a

.c. _ _.

e tt ers at =hient conditions. Thi s do es -

cutput occurred in 55t. of the tran F

rat occur until the under rsnge condition exceeds 100% of the eslibrated sp=n.

current will be greater than 4 M.

At that pointi the cvtyrt e

s*

m

-,w-...v

--er

s.

.g.

R the ::ar.,elit er reverti In bOIb the oV6r range and under ranSO CQDdi',2

  • g, g ;g,;., gg p;ce r.ure soecificd operation when pressure is 8N ",'";

retei Provided the over or under pressure cm;?.3$,s's ethir. specified likits.'

3[

'," ' s

. [..[.... d2 t rg;

' hh.vi3h.to iterste that'the trans itter: is'hi# ' '}L ~

't Y C'

~

3-

{

i you shotild be w:re of the above t.tsted c..i acte-3th b E M'" '#U '"'#"r

.cs11bratid? span to the Specific ****"*

gi 27p1 !:stion -

range cor.ditions sa.that it can be accowM t of the.t rur.suitter..

u. v-amNY

-~

your order is' progressing on schcMe and Il]}5hi'

$Ny hre :SS8CI

-r.

Should. you h:ve any quesgn, f.a p cd to.the usJer: lined. im 6i.7 Ben Pnitie lac M,,

very truir,

~

~, - / (. yl* ="~~" a j.

f.,-

~

. ~>

4

(*

-( A ~ ~ -

v: I

. i. *.

p

--Tirothy E. JiGD00 m

n

!. Project,. orv...y-r w

F ai x

"bJcc:: Ed hutleri FJii P.cchester c.

..E

~

-s.

4 h-

  1. e

, I.,

s f's

...?*

s

,,.tl e Y-j g

o a ',

t t

-i

.s 8

9 y

er s.

'4 r :

..:'c,

(;;',

3

, t...:

,'s s

u,'

s

., s 5

e

..'e r

I.

. o;

, -g,.,

,1 i,

s 1

a

.x.

4 4

I e

i

SUPPLEMENT il TO 10 CFR Part 21 Recort cf March 12 1980 (i)

Name and address of the individual er individuals informing the

'Ccmmission.

Not Applicable.

(ii)

Identification of the facility, the activity, or the basic ccm-ponent supplied for such facility or such activity within the United States which is affected by the pctential application p robl em.

Rosemount Model 1152 Pressure Transmitters with output codes "A" cr "0".

-(iii)- Identification of the firm making the report.

Rosemount Inc.

12001 W. 78th St.

Eden Prairie, MN.

55344 (iv)

Nature of the potential applications prcblem.

Rosemount's Mcdel 1152 Pressure Transmitter provides a specified linear output of 4 to 20 mA thrcughout the range.

Transmitter cutput at pressures ever and under the range is not specified by Rosemcunt.

It has been cbserved in a limited number of transmitters that an output between 4 and 20 mA can cccur with certain in-put pressures either over or under the range.

These ambiguous outputs in the over and under-range ccnditions arise 'from ~different causes and are related to different transmitter parameters.

The occurence of an over-range ccndition ambigucys cutput is related to the upper range-limit of the transmitter.

For the curposes of this

~

report, an over-range condition shall be defined as a input pressure exceeding the upper range-limit.

The occurence of an under-range condition ambiguous output is related to the~ span sof the transmitter.

For the purposes of this report, an under-range ccnditicn shall be defined as a input pressure that is less than the icwer range-value.

The terms " upper range-limit",

" span", " range", " upper range-value, and "lcwer range-value" as used herein are as defined in SAMA standard FMC20.1-1973 Process Measurement and Centrol Tarminoicgy.

For the over-range ccnditicn, the ambigucus cu:put is due to a certain ccndi-icn in tne :ransmitter elac:rcnics.

The result is that the cutpu current may drcp belcw 20 mA.

In a limited sample-si:e, the over-range ccnditicn amoigucus cutput occurred in 5% of the transmitters at ambient conditions.

Referring to the attached graph, this dces not occur until the over-range ccndition exceeds 140% of the upper range limit.

At that point a disccntinuity can occur with the cutput current instantanecusly decreasing ia less than 20 mA.

As an example of this prcblem, the upper range-1imit of a range 51152 Dp (Model 1152 Dp5A22) tran:mitter is 750" H 0.

The range of this transmitter 2

can be set to 0-150" n 0.

If the ambiguous cutput in the 7

over-rt.nge condition is to cccur, it will cccur at 140% or more of upper range-limit cr, in this ccse, a appr:ximately 1050" H 0.

The transmitter then would give an cutput within 7

4 to 20~mA at a pressure that is,'in this example, seven times (1050" 4 0 f 150" H,0) :he set uccer rance-value.

7 Due to the erfects of radiation and elevated temcerature, we believe that the frequency of occurrence of the ambiguous cutput frca an over-range conciticn will be greater in a radiated or an elevated temperature environment than was experienced in our limited sample size testing, which was in a non-radiated, ambient temcerature environment.

For the under-range ccnditicn, the ambiguous cu: cut is due to a different condition in the transmitter electronics.

The result is that the cutcut current may exceed a mA with an input pressure less than the icwer range-value.

In a limited sample size, the under-range condi icn ambiguous i

output occurred in 55% of the transmitters at ambient conditions.

Referring to the attached graph, this dces not occur until the under-range condition exceeds 100% of the span.

At that point, the cutput current potantially will-be greater than 4 mA.

In both 6f the ov'er-range and under-range ccnditicns, the-transmitter reverts to specified operation nnen input' pressure is again within the range, provided the ever or under pressure is again within the range, provided the over r ; or under. pressure was within the limits specified by Rosemount.

c-

~

We envision that a prcbism could cccur, for example, as icilcws:

initially the over/under-range ccndi:icn triggers an alam.

If the alarm is uniatched, the alam condition will not be indicated cnce the transmitter reaches the regicn of ambiguous cutput, cc, if the alarm is latched and "alam ackncwiedge" is selected, :he alarm will nct reappear if the transmitter is operatir.g in :he ancicucus cu::u:

regicn.

In.either event, the centrei syst2m is receiving an incicatier, that the cresst.re is within range when "

3 fact an over/under-range ccadition exists.

It shculd be noted that the prcblem will not exist in the hypothetical case indicated en the graph at T, due to an under-range conditicn since the output current in the ambigucus region is less than the trip point current.

The potential problem will be present with T set at the cutput current 7

indicated en the graph, but weald not occur in the over-range ccnditien if T ambiguous output current.2 current was set less than the The attached graph is Revision A of the graph sut:mit ed with our report dated March 14, 1980.

please note the changes.

Rosemount is supplementing and amending the report of this potential prcblem so that the infomaticn may be more fully analyzed.

(v)

The date en which the infomatica of the potential applications problem was cbtained.

Amended to March 5, 1980.

(vi)

The number and iccation of all in use at, supplied for, or being supplied for cne or more facilities er activities subject to

,the rei;ulations in this part.

Not applicable.

(vii)

The corrective action recca= ended to negate this potential applicaticr.

problem.

The safety system should be anly::ed in view of this supplementary report to detennine if a potential application

__.. m.. m problem exists and appropriate correcticns-to the safety system should be implemented.

-- --(viii)-Any related to the defect or failure to ccmply-about the-facility, activity, or basic ccmpenent Inat has been, is being, er will be given or purchasers er licensees.

Not applicable.

If you have any questicns or need more data, please contact Rcsemount Inccrpora ted.

Rcsescunt Inc.

12C01 West 78th St.

Eden prairie,.*G.

55342 Attn:

Chuck Cdegaard Nuclear 0:eraticr.s a r.a;c r v

phcne:

(512) 937-3433

O C

A 0

c l

O s

C O!

b' A

d

-~

c 3

G O~

a a

m cE s

hs

~

3 o

o

+

"od C%

C W

w H

0 g3g C

C O

V C

O n

U U

b T'

C y

=

=

=

n Y

V e

o T

N

~

w g

C D

0 C

O t

\\

c dd

\\

O N

O h

a c

3 0

e

,f O

3 fw3 c

-g @

c.

S V

)3 W

s

}

e o

D

=

a 0

? I 3

C C

d c'

a 3

g 0

Q N

v 4

L J

h O

O 3 o

> >?

=

3

=

n 5

s

=

2

=

c b3 h b

s O

3 sx E

e s i

E 4

y j

v v

o t a

r M

o E

F x

e ed e.

a bo FF x

v x

o A

^

g x

~

M r2 x

"3 e

x Q

M 7",

4 x

e I

O e

=

g N

T 3x

=

w 6

C x

M M

M d

w v.

o x

c o

c 5

E A,

V M

O C

C C

8

.v n

N N

N w

w

l

\\

g ll[.V } } }$hh

,A x

_. _J

_'.i Rosemcum ROSEMOUNT INC.,12001 WEST 7Ein STREET / ECEN FRAlRIE. MINNESCTA 552 Maoling Actress: P O. BOX 35129 l *,flNNEAFOLIS. MINNESO rA !!C TEL: (612) 941-556"r:Q {",i M ^

T

~r' c : 29 {j

    • my 7

0-C.V. SALES May 14,1980 GUFFALO. N.Y.

C. V. Sales 8665 Sheridan Drive Williamsville, NY 14221 Attention: Procurement Manager Subjec t: Report of a Potential " Defect" or ' Deviation"

Reference:

10 CFR Part 21

Dear Sir:

Attached please find supplement two to our report written under the referenced regulation ard mailed to you under cover of my letter of March 14,19S0. This supplement is intended to correct information that was presented in the criginal letter and in supplement one. As a result of additional testing, the under range condition has now been defined as a reverse pressure condition. The details of the results of this additional testing are centained in the attached supplement.

This supplement is pmvided to you so that you may more fully analyze this -

potential applications problem.

Sincerely,

't'

\\

....A'J Ronald A. Ward Senior Vice President, Operations Acting Director of Quality Assurance RW:Ir

~r SUPPLEMENT #2 TO 10 CFR Part 21 Report of March 14,1980 10 CFR Part 21 Report, Supplement #1 of March 28,1980 (i)

Name and address of the individual or individuals informing the Commission.

Not Applicable.

(ii)

Identification of the facility, the activity, or the basic component supplied for such facility or such activity within the United States which is affected by the potential application problem.

Rosemount Model 1152 Pressure Transmitters with Output Codes "A" or "D".

' (iii)

Identification of the firm making the report.

Rosemount Inc.

12001 West 73th Street Eden Prairie, MN 55344

.(iv)

Nature of the potential applications problem.

~ Rosemount's Model 1152 pressure transmitter provides a spccified linear output

---of-4 to 20- m A throughout the calibrated range of operation. The transmitter output is not specified by Rosemount for pressures outside of the calibrated range of operation. It has been observed in a limited number of transmitters that an output between 4 and 20 mA can occur with certain input pressures

- outside of the calibrated range. These ambigucus outputs can occur in both an

_. - - -._.~

-d over pressure condition and a reverse pressure condition. Both conditions arise IL_en the center diaphragm,o_f_the_ pressure sensor bottoms out against either of I

h the fixed capacitor plates. In each case the normal capacitance signal becomes a very high capacitance signal which affects the operation of the electronic circuit.

For the over pressure condition,-the effect of'the high capacitance from the sensor is a modulated output on the oscillator circuit which may cause the output current of the transmitter to drop below 20 mA. In a limited sample size, the

- ambiguous output during this over pressure condition occurred in 5% of 'the.

-. transmitters-at_ ambient conditions. Referring.tomthe attached graph,.this,does

.m not occur until the over pressure condition is > 140% of the upper range limit regardless of span.

At that point a discontinuity can occur with the output current instantaneously decreasing to less than 20 mA. As an example of this potential applications problem, the upper range limit of. a range 5 1152

-differential pressure transmitter (Model 1152DP5 A22) is 750" H20. The range of this pressure transmitter can be set from 0 to 150" H:0.

If the ambiguous output in the over pressure condition is to occur, it will occur at 140% or mere of the upper range limit or, in this case, at pressures > 1050" H2O (750" H:0 x.

-1.4)..The transmitter then could give an output less than 20 m A at a pressure. m

_- that is,'in this e'xample, seven times (1050'! H2O + 150" H:0) the upper range Page 1 of.3

value. Note that the significant figure for use in determining the pressure above which an ambiguous output can occur is the specified upper range limit (750" H2O in this example) not the customer selected upper range value (150" H2O in this example).

For the reverse pressure condition, the effect of the high capacitance from the sensor is the oscillator circuit drawing more current which may cause the output current of the transmitter to exceed 4 mA.

In a limited sample size, the ambiguous output during this reverse pressure condition occurred in 55% of the transmitters at ambient conditions. Referring to the attached graph, this does not occur until the reverse pressure condition exceeds 140% of the upper range limit regardless of the span. At this point the output may exceed 4 mA. Asan example of this potential applications problem consider the range 5 differential transmitter in the previous paragraph. If the ambiguous output in the reverse pressure condition is to occur, it will occur at 140% or more

' the upper range limit, or in this case at reversed pressures > 1050" H2O (750".f:C x 1.4). The transmitter then could give an output greater than 4 mA at a pressure that is, in this example, seven times (1050" H2O + 150" H:0) the upper range value, but reversed. Also note that with absolute pressure units a reverse pressure is not pcssible since the low pressure side of the cell is evacuated. With gage units a reverse pressure is possible only if a vacuum is present on the connected part since the low pressure side of the cell is vented to ambient atm. "9ere. Since the maximum reverse pressure would be one atmosphere, only range 3 and 4 gage units could obtain a reverse pressure exceeding 140% of the upper range limit.

Due to the effects of radiation or elevated temperature, we believe that the

_._. -~ - -frequency of occurrence of the amb:guous output will be greater in a radiated or - -

an elevated temperature environment than was experienced in our limited sample size testing, which was in a non-radiated ambient temperature environ-m ent.

After the occurrence of an ambiguous output from an over pressure or a reverse p essure condition, the transmitter will return to specified operation when the ir.,ut pressure returns to the calibrated range, provided the over pressure or reverse pressure was within the maximum pressure limits specified by Rose-mount.

(v)

The date on which the information of the potential applications problem was obtained.

March 6,1980

-(vi)

The numbe and location of all in use at, or supplied for, or being supplied for one or

- - --more facilities or activities subject to the regulations in this part.

n Not Applicable (vii)

The corrective action recommended to negate this potential applications problem.

The safety system should be analyzed in view of this supplementary report to determine if a potential applications problem exists and appropriate corrections to the safety system should be implemented.

Page 2 of 3

(viii)

Any advice related to the defect er failure to comply about the facility, activity, er basic component that has been, is being, or will be given cr purchasers cc licensees.

Not Applicable If you have any questions or need more data, please contact Rosemount Incorporated.

Rosemount Inc.

12001 West 78th Street Eden Prairie, MN 55344 Attn:

Chuck Odegaard Nuclear Operations Manager Phone: (612) 937-3433 Page 3 of 3

l.

.e.

-y,.

.c -

t.

n

, s..

~

..,, April 8,.1980.

r s

. n-.

..r.>>:

.n.

.~

~.,

y.;....

s w,'

ff Fose. mount Inc.. y lm.;.r.:.

,~..

i;..;

..o..

c

> '..'P.O.., Box 35129.

... i..

-2,.. Minneapo.lis, MN:55435T Y.. - : <..:

,0,.

~

. n.

. s.-..;;

_j..

.,. ~

p. ;:. > ~..,;.., y -

.q s.:

.j.m,..-..

.,.,z.

. ;.a f. i..,. r Att. ention : *. Mr.. Fonald Ward '

,. ' '.c

0.g:... J. ~....M,u.,%n".?" O.e f, Senior.,.Vice. Pr'es.ident '

. ' cJ, N,'....

...n.

l y..

..:W.".' &.

..w

.x..

*..;).x...:.-;.

+.~. ><... Ope..

ra.ti.

Y j.':

M. ;; ::.;;

g g;: @. on s....'..: a...< '.

. t. c.. :.

g cv.; K. :'.,. W :

. y ;..u; p

..v :.'.,..

F.... %.,..'.

-G

.s.>

..u.%.,

v z %:;,. ;%,,.4... M.,.....,L :..: :,^.v m:54.M*a..<...:*!.. m,:.....3 v.:: :

  • .. ~ ~ '.:.. a..%'.. '.;. W., 3...

.n

-Deav Sirr......

?. ? : '... './

..% '.. t. R :v.r.. m. "..

.~ u.,.. r ',.. ;'w r..s.

. A:

N.

-.r :

.s.-

...u

,L, n.:,: --

s. :q 1.*.,..~.

s: :;

e.

u...

. : ~.;

~.. *.

~.

...'E.. ?. n,l.,f J. Sub..j ect r '. Report?of"a Potential Defect * '

c

- P. ;W... ~..

a

^.

.,.,7..

..,...o..f._,..,. a.

g.2 8' f,a... d.J. LRefirence:. " Mr'. Ward's' Iettbr 'of. March' 14, 1980- attached

.. n.;.

i c.

: '.... y' i. 1.?.

. f

..U...W Mr.. Ward's. attach.ed. l.e. tter of M. arch 14, 1980 has alerted us to a

...c,. :U..4 potential defect.or deviatica'in the Rosemount 1152. Pressure.,

'..e

-@n.
y. { ?:7. 7;,..

.,3,,..

,o

.- ?.Trans=itter.

7 4

/

, 1 z.,';;.

e

,. n. ' W.

o "f "..w.. ' -

~

..+

..u.

. _,;:, ( ~e.K.5 ';Ve. presently,have.this(Trans=itter; installed on;12 identical. safety..

f ht. related packaged air cohditiening units for TVA.

A description of 9

R. cn. 3;.tha way th'e' Tran'shitter is use' d in our. sy' stem is attached.

,, e.q...:

m... h.;.,. e.

w..

,.s

.m.......

, ~....

s

'..t:;.

- 6l, ^.In order tq_. assist. us in evaluating the performance of our system T. '~.J., f. in regards to.the potential, defect, could. you answer several

- 1.; ques tions t.- :.

... ~ :,

.u..

.c..

s..

.c.

.....w M..

Q...

    • l,,,.-*. '; :.\\ <..._.,y.. I ':,f;...,,.#,5.. an

.,.Q -

.,O r-l '. %.' /.'.-1.

1;. -l The. Transmitter: p. art nu=ber ve.2 @ ';'? This7 has' a* =ailmum sca The a=biguous:

~

~

a.re using is 1152-DP5-D-22-PB.

2

,. %_b.[ $.'hy. output vl.11:therefore occur at. or. higher than 1050"H 0..

^

2

.,.1his.ionverts to a 323 p.si li=1tation in t.otal pressure when

, m;mn,y"f used inL ourjapplication' or a capability of going 18 psi over.

. o-y.

y p; g. -.

.y,

-d.. :...

m

. " l /.:.p :.:.;-. W./ scale..Would 'you. confirm th'is ?

~,

+-

.. y

r. w.

. a ;;.

n -

. v; ~

..s...

'r'

-M. " s. 2'. - Can the Transnitter be" checked for this " deviation"? Is it l ',. 'c; possible' to " overpressure".the transnitter; and if no devia-

' v...'

..s. :

.: y.,.J.,.2.

f tiont occurs.' then 'it 'is' accep table.

Does the condition occur'

~ - _-.2.;. 2 u...n.e.Z,. d. 4., only-periodically.in' the same Transmitter 72;Vhat_ is. tha;....

..~ a

. ! ". %. W.:q

. cax1=u-.u overpressure that the Transmitter can safely.vithstand?

ny.

...c-c ', {.4 - 3. ; Are'Rosemount pe'rdonnel available to' supervise the check q.l.

R.,['

. =entioned'in paragraph 2..

I

.-r r.,:...

.m.1..

4..

.*4,

,,,....cf.:q,.-

4,, Is it. nor'e feasible to 'i e=ove the, heck?

Transmitters from our' units

~

,g.

(and rcturn then to Roser.,ount for c

. a

.. _.s 4

.w g

4 t

i

+..

e...,..

. 3,

.t n

..,.3,..... -

m

. ~. l y

~.

g

..s..

~n.

4

...e 1

,-.e-4.

, Rosemount Inc..

Pa.ge.

. April 8, 1980 1

e-1

~

r s

p.

.. n 2

.i v. f,. ?"G.. 3 7. 56. W H any'abbiguous. Transmitters be replaced by Eosecount on - ' '

.1 P..,

~

L

.m

..:.g. g..o. ' ?.O v.p.T.;.yerran ty :.b asis

,.:... ~....

.e.-

.:;J ; 7 5;* {Vf K'S a); ;Ifi heck is' made vithin 1 year f,n i.

c

, 7 i.

o.e.a..i.~ y ~',p,vy i.r.g?, ' b)'/ Ifl.c. heck is :ade..at ' Plant startup. 2-3 years from nov

..: y

. r

u. x..,...e.,t s m
.. o-

... e..

.o

~

.u..

. s

..~ '.

. fat

... : c.. p,..y :.. i..

u. *4 Carrier c

L; e.e - N..

,*~r

/c'

,s D.,6.) n."

DVe. presently _have '6' a..fi,'2.I$P.O. 770',157FDldue dditiocaf 1152'Trans=1tters on order.

r

. "..,.Ei.'.".;*,'y:;.&z.talinsui e,* n..o.' z=biguous o.u.tput v11Y. occui.

C^

- n...

<.e,.

9 ' ;;.

'.'..e.:. l L...

.m M...., v.

  • Ke yould a.%w...; 3 W.M.' ? ?,.N. % Y..
v: '

, L.. ; *n '. '

..,y ;S:K U.' W 2 Q. W,.....

..R:

4..'i..

9. R.'O. K W l.

ppreciata potir; reply.~ to 'these questions in. order'to' formulate

..f, wi..M. our. course. of'ai: tion;.' If you have any quest M,;;. i...

... T:

r

.. s.

u ~

~u a Code ' 315 i 432.:6126.2...., :.

....c.

.. { '.

.2:Are

- -. :..~.

. n.. : : -

  • %?..,*'
.'aj. l. ;

..\\

g ; "' '.._., 3.. _. ( ~: f y.. - n:., ; ;. * :

~.,,. 4..

s

^

.. ?

t

4. :... L.. :>l ' '. Sin...

r.

vn...ce

. cerely.

. ~...

. e. &,.

-s

f.. ;.:.

J. '..

< ~...

~

s

- ~ -...

v.u.: n. :s; s..., - ;..

a.. +... - ~..
x..

.v e.,:.-.. ~

.., v, -

z s.

e.-~

O.,.., =.. L 1

  • s

,..,f...a.,..-e,,.,.~-

..L

..,.c.4. 3,...

a

. e

.t.

-f,..

i

%.N

.a 4.,; r.;.....f.s...~*..,

.c

a. :., -

..e O

_a

. 4,(

c. cV;,.'.r

. < s

... Marvin. De,cker.

-.4 T.

?

'qc, Contract Engineering...-P.an a,ge r.,,.... m,.'.

.c r

e e

..,.' "[.,1.MSpeciaL. Order Contract Engineering h.

.T,

.3. y. r,...:..%,.. y. <a.-.e, s

.,..<e.._.......;....t,..

y..

.a.

.e.,.,w~..,..

- 2,..~.:. :... x.

...%p. 8..

au

.~m

+.

.s.. '.

... +...s :

.g

......1

.. c'. **+/

s

  • '.... ?. s., &.,,', '

?*

G.,y;

.w

.e...

. * '... s*.... - c,,.. g; v....., c....N,.......

. e,

..- d..,.tra.chmen ts'...

j

.. iT;. ; ';

', m, C..*' '..

l?..

3

..s W

?

.N,.. -

Mr. Allen-Pirro, Carrier Corp., Syracuse.

......a ect a

I'. f;...? N,.h,... - Mr. ' Alan Jo.hnson; Car. rier Corp....' Syracuse e,.

4 3.;. p *.. a.P ;f Ms %..a.ncy yorkman; ' Carrier Corp ', Syracuse. '.,

N

'.m.

~-

..... e :,.

.t..., -- *s

~...., ~. *.

.,g>a

'.r

.s..y"'r.>.,.,..g..i,_....,,:,..,.,.... -

. w.:

s. -........

s..-

.e,.,,...

  • .t.

.u..-

    • ,,..s.~.p:,..,.m.v..+,.,..M. ~.. *..

ja.

  • y*,...

.r<

  • t.

s* r~

....~

.i.

..,.x.

a.

y4

- >.,3

.,.s w

e 3,

~.. ?*.

' &...*. i s..

..e

- ~,,-

..ss

. ; *.s

- p,,

....s. ;.

\\

p

.S t s.* g

.s 9

., v*...

.s

. v e... 's, n,.

j., *

.,,,s..%.'-

a*

M b.:.

i. r. {4..

1 ',. '. 9..,..

..L.,..

,' N

,.q, 4

.,*p*.2-

,...........s

.2.

s

.-.'.*.4.,,..,, ' *

...,.c.-

_F g

s g

g g'

.*.1.

g.1. g / *,

g h

  • ,..=v.,sg

,t,..

.%..,,' c '%,, j,... u., c.

  • L'

[.

6 1

f

..,,6.-.D

.g 4*

8*%

  • g

.=

T. e.,

  • 4

.,.s.

.p g..

.f..r...*

4 g*,

i.

f g._*.

t e

mN

.,....%g*

  • J

<.~..-ga.

,)*

s,**e..

4

[.

=.

( [#

.,s

""..~..;< *.. '

... ~

.,. e

,.s.

s

  • ': t

.zy, O

.h 4

=."; ( -., = a.

g F

g g

$.p

.s*

p-,.

.v.

y *'. * *.

3

'\\*

','t v.

,.,'?.1

o a e

s.4."..*,.

' ' '. '...\\g;

  • * *,h.. * 'c. o ;;/ I'.., ? '..

..J..

1, ~ ~ ~

.,.,.. 7

  • t. *

+5-.

... f y. ~.. s..... j. " *... Y l.,...*...,

, / i

'/ ' ' '.r ' #,. '.#

e,....

.., ~

p..

e.-.

  • %* b.,1 *lz.. *

[ a. s.'. 4,.*.

s f,.',.y.,

'^., <. /.y.,

3.

...j.'.t

,f p g.

.+m p./

,.,,..v..

4,.=

. p,....

.... =... %.4.,. 2. '. y. '

  • e,'

%.4 s-=

~._.

e

. 'i

"," '. 4; *-

.* f e

e,"

.1-/

-,s

%,. y 1 -'

  • i.,

3 s.

.,. ~

~ <.

s

~.

ny e v..

.s..

w.

,.2,..

.. % %., 7

. ~..

r.,~..

',*'.y.

e e'

s

}

g.

', '

  • 1

+

,.s

  1. a g

,ed.

4 r,

,1,. -

~

s...

~

Y

,*.e b,a, p

8

.2,..:

,.,.g

.... c.

. n.

i

.~.,..>\\e, 2

,e.......,.3

r. y....
  • 4

..n,,

e,,3

,a

. '.-g.....

6 r

1,..

...v.

. =. *...i-. *

. s.

,w.

t -

6 D

8.

Y 4

6 e

....,,v.

3 3

1959

\\

\\

7 _ 'g

.\\

r 2.OSOC O'.i D i ROSEfAOUNT INC.12c01 WEST 72:n sTAEET / EDEN FRAIP E, VINNEsOT A ::..

Marhng Address: P O. 50x 35129. *.ittitJEAPCliS. ?.1114t:ESOTA!!-

TEL: (512) 941-5560 TWX. 910-576-3103 TELEX: 29-C ~

May 7, 1980 Carrier Corporation P.O. Box 4808, Carrier Parkway Syracuse, New York 13221 Attention:

Mr. Marvin Decker Contract Engineering Manager Special Order Contract Engineering

Reference:

Letter to Mr. Ronald ' Ward dated April 8,1980

Dear Mr. Decker:

In response to your referenced letter, the folicwing answers should be of assistance to you in evaluating the overall performance of your system based upon the potential out of range ccndition affecting a percentage of our 1152 transmitters.

1.

The maximum scale range you called out indicates that the Rosemount part number you are using is 1152-DP5-D-22-PB; It is correct to say that at 1050" H O (or 140% x 750" H O),

2 2

an ambiguous output.could occur cn scme of the units.

2.

The transmitter can be checked for this condition.

Maximum overpressure that can be applied to either side of the trans-mitter without damage is 2C00 PSIG (or 55450" H O),so that 2

a check can be made without affecting the unit performance.

The " deviation" is not intermittant and is 100% repeatable, given that the transmitter pcssesses this over or under pressure characteristic.

Those units that are good initiall.y will not exhibit this deviatien.

However, if the amplifier '

. circuitry or DP Sensor Module of a good unit is replaced,-

c.__ -..

m.

there is the possibility that the deviation will appear in the repaired unit.

3.

Rnsemount #ield service perscnnel are available to sucervise the check mentioned in paragraph two, at our standard rates and scheduling.

Carrier Corporation 2.

May 7, 1980 4

The feasibility of returning the units to Rosemount Minneapolis or a field service center for testing depends upon the time frame involved.

Although we have extensive and accurate pressure tasting capabilities, our lead time for returned parts is typical'y longer than if service people were involved with the customer's in-house testing.

5.

The ambiguous output condition described cnly occurs out-side of the performance range of the transmitter.

No Rosemount specification is adversely affected, and since there are no defects in workmanship or material, the trans-mitter is not covered by warranty for this eventuality.

All customers who have 1152 transmitters on order were sent a letter asking for an evaluaticn of the performan e of the 1152 in its out of range condition with respect to the particular application involved.

In the case of your P.O. 770,157FD,a letter dated March 25, 1980, was sent to:

Mr. Ed Butler, Buyer P.O. Box 4801 Syracuse, New York 13221 We hope that these answers will aid you in formulating your course of action.

Please do not hesitate to call me at 612-937-3552 if I can be of further assistance.

Sincerely, ROSEMOUNT INC.

,.f h' m.c Y ?

I p.

s4=

Mike Baltz Marketing Engineer MB:gbg

Retrieved from "https://kanterella.com/w/index.php?title=ML19320C475&oldid=4781120"