ML19331D321
| ML19331D321 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 08/25/1980 |
| From: | Herbein J METROPOLITAN EDISON CO. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| IEB-80-16, TLL-411, NUDOCS 8009020013 | |
| Download: ML19331D321 (3) | |
Text
I ~Tjiis DOCUMENT CONTAINS
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POOR QUAL.lTY PAGES EI'm7l Metropolitan Edison Company Post Of fice Box 480 gl QN 3 'e I
h'Jj Middletown, Pennsytvania 17057 717 944 4041 Writer's Direct Dial Number August 25, 1980 TLL 411 Office of Inspection and Enforcement Attn:
B. H. Grier, Director Region I U. S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pa.
19406
Dear Sir:
Three Mile Island Nuclear Station, Unit 1 (TMI-1)
Operating License No. DPR-50 Docket No. 50-289 IE Bulletin 80-16 This letter is in response to IE Bulletin 80-16 and modifies our previous submittal of August 14, 191.0 (TLL 361).
This bulletin concerns the potential misapplication of Rosemount, Inc. pressure transmitters.
I.
Use of Rosemount Transmitters:
TMI-1 uses four (4) of the Rosemount Model 1152 GP transmitters with output code A in the Reactor Protection System (RPS).
The instrument tag numbers are RC-3A-PTl & PT2 and RC-3B-PTl & PT2.
These instruments, via the Reactor Protection System, trip the reactor on high and low RC pressure. The high pressure trip setpoint is 2300
}
psig and the low pressure trip setpoint is 1900 psig.
l l
II.
Effects of over and reverse pressure:
1 Neither the over pressure nor the reverse pressure conditions would pose any problem in our application. The explanation follows:
A.
The Over Pressure Condition During an over pressure event, the ambiguous output does not occur until conditions exceed 140% of the upper range limit. indicates that the upper range limit l
of the model 1152GP9A92T0010PB transmitters in our application l
is 3000 lbs.
Therefore, the instruments must see P > 4200 l
lbs. before they would exceed the 140% of upper range limit.
However, the 4200 lbs. pressure could not occur because the pressurizer code safety valves are set to lift at 2500 psig.
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' %trcoo: tan Ec son Campany s a * 'emer c' tre Gerera: htsc Uti:es Sem
- 5. H. Grict TLL 411 3.
The Reverse Pressure Condition During a reverse pressure event, the a=biguo'us output does not occur until conditions exceed 1402 of the upper range li=it of 3000 lbs.
As a result, the instru=ents cust see P > 4200 lbs. (reversed) before they would produce a=biguous output.
In " gauge-pressure" =easure=ent (as in our case), =axi=u= reverse pressure would be one at=osphere which is 14.7 psia versus 4200 psig reverse pressure which the instru=ent can withstand without producing a=biguous output.
Therefore, the reverse pressure required to produce an a=biguous output could not occur.
C.
Instru=ent Data 1.
Co=plete Model No:
Rose =ount Model 1152GP9A92!0010P3 2.
Trans=itter Range Li=its:
0-3000 PSIG 3.
Trans=itter Range Setting (Calibrated Span):
1700-2500 PSIG 4.
Range of Process Variable Measured for:
(a)
Nor=al Conditions-0-2500 PSIG (b)
Accident Condition-0-2750 PSIG (Note that the high pressure reactor trip occurs at 2300 psig and the low pressure trip occurs at 1900 psig.
The 2750 psig is the upper li=it during accident and is equivalent to 2500 psig RC systen design pressure
+ 102 allowable over pressurication.)
5.
Values of Process Variable which could produce Ano=alous Indication:
Over or reverse pressure greater than 4200 psig.
6.
Se rvice/ Function: RC Pressure-Narrow Range / Reactor Trip on high (2300 psig) and low (1900 psig) RC pressure.
1 III.
Description of Corrective Actions:
No corrective actions required.
For additional information, see Special Report 50-005/99X-0 (TMI-1) March 27, 1930 (TLL 132).
Sincerely, 0* 2
-crd 3 g, He:
.6 J. G. Herbein Vice President TMI-l JOH: DGM: hah Attach =ent ec:
D. Dilanni H. Silver J. Collins
- 3. Snyder
9 i
m 4n Ofdering Information MODEL e
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1153 ALPH ALINE PRES $uRE TR ANSueTTERS FOR NUCLEAR APPLICATIONS
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CODE PRES $URE MEASUREMENT
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e OP O Weeae.at Preswe. 2000 os.g Static Pressu e Rateeg r
HP D.Itercat.W Pressure. a500 ps.g stat.c Pressure Ratiag AP Ansc4wie Pressure GP G.was Presswee
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' PRES $URE R ANGES CODE MODEL 11520p
. ' MODEL 1152HD MODEL 1152AP
. MODEL 1152CP
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y h,'(ASSOLUTE) '- '
'.p (C AGE)
(OlF FE RE N TI AL) 3 0 $ ts 0-30.a H;O N/A N/A
. 0 S to o 30 ia. H,0 (0-827 to 0 762 mm M O)
(0-127 to 0 792 mm H 0) r 4
0-25 to 0-IS0 *a H,0 0 25 to o-t50 ea H,0 0 2 to o It ia. HgA 02Sto0150letH,0 (0-635 to 0 3810 mm H,o)
(0 635 to 0-3410 mm H,o)
(0-69.o 0 3a0 g/cm3)
(0 435 to 0-38to man H,0) 0-125 to 0 750 *a H.O 0-125 to 0 750 in. H,0 0-10 to 0-55 in. Hg A 0-825 to 0 750 an. H,0 (0-3175 to 019050 mm H,0) to 3175 to 019C50 mm H,0)
(0 0 345 to 0-l.889 kg/cm8)
(0 3t75 to 019050 mm H,o) 6 0-17 to 0-1C0 ps.d 017 to 0-100 psHf 017 to 0-1C0 psia 017 to 0100 ps.g a
0 t 2 ts 0-7.0 tg'em3)
(0-t 2 to 0-7 0 hg/cm3)
(0-I.2 to 0-7 0 kg/cm8)
(01.2 to 0 7.0 kg/cm )
7 0-60 to 0-300 ps.d
. 0-50 to 0-300 ps.d
. 0-50 to 0-3C0 ps.a 0-50 to 0 300 pseg to 3 5 to 0-21 kgicm8) 0-3 5 to 0 21 kgicm8)
(3.5 to 21 kg/cm8)
(3.5 to 21 kg/cm8) 8 0-870 ts 0-50C0 ps.d N/A 0-170 to 010C0 ps a 0-170 to 01000 pas (012 to 0 70 ks'em3)
(0-12 to 0-70 kg/cm p (o.12 to 0 70 kg/cm8) a 9
_, NsA N/A N/A 0 500 to 0-3000 ps.g (0 35 to 0 210 tg/cm8) l N/A 01000 to 0-6000 psig i
N/A 0---
- N/A
.0-70 to 0 a20 kg/cm3) 8
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CODE OUTPUT-A 4 23mACC D
4 23 mAOc w. tit Adlustable Damp.ag
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, OR AIN/ VENT V ALVES, ISOLATING DIAPHR AGMS ELECTRONICS HOUSING /
CODE
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s Alum. ave 22 316Ss
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A n
es TTPtCAL MODEL NUM8ER m.
STANDARD ACCESSORIES All Models are TAGGING ALPHALINE P(essure Transmitters will shipped with vent / drain valves and one instruction be supplied with SST tagging in accordance with manual per shipment.
customer requirements.
cal.!DR ATION Transmitters are factory calibrt.ted DOCUMENTATION Certification of compliance
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to customer's specified range. If calibration is not will be provided for each 1152 transmitter for nuclear specified, transmitters are calibrated at maximum qualification, accuracy, special cleaning, hydrostatic range. Calibration is at ambient temperature and testing, and traceability. Chemical and physical pressure.
reports and identification of pressure boundary materials will be on file at Posemount.
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Inc.
Posi OFFICE Box 35129 MlNNEAPOllS, MINNESOTA 55435 PHO N E: (612) 9415560 TWX:910-576-3103 TELEX:29-0133 CABLE: ftOSEMouMT Q Revised 9/79