United States Nuclear Regulatory Commission - Protecting People and the Environment

P21 95-073

ACCESSION #: 9503220185

Rosemount Nuclear Instruments     Rosemount Nuclear Instruments, Inc.
12001 Technology Drive
Eden Prairie, MN 55344 USA
Tel 1 (812)828-8252
Fax 1 (612) 828-8280

March 21, 1995

 
Re:   Notification under 10 CFR Part 21 on Certain Nuclear Qualified Model 1152, 1153 and 1154 Transmitters with Monel Alloy 400 Isolating Diaphragms

Pursuant to 10CFR21 Paragraph 21.21(b), Rosemount Nuclear Instruments, Inc. (RNII) is writing to inform you that our records indicate that certain Model 1152, 1153 and 1154 range code 6 through 0 nuclear qualified pressure and differential pressure transmitters / sensor modules were supplied with unqualified isolating diaphragm materials.

At this time, RNII has determined two production lots of isolator assemblies for sensor modules range code 6 through 0 used in Model 1152, 1153 and 1154 transmitters were manufactured using Monel Alloy 400 isolating diaphragm material. The correct material for these sensor modules, according to design specification is 316L Stainless Steel (SST). Transmitters and sensor modules from these lots were shipped to customers beginning about Sept. 1, 1989.

All metallic parts of the Model 1152, 1153 and 1154 transmitters which come in contact with process fluid are specified to be made with 316 SST. Isolating diaphragms are in direct contact with the process fluid and assist in transmitting the applied pressure to the sensor. Monel Alloy 400 material has not been qualified for use with Model 1152, 1153 and 1154 transmitters. However, RNII did qualify to seismic requirements Monel Alloy 400 for a specific option of Model 1152 transmitters. These units are identified under option code "T1815". (Typical model number 1152DP5N22T1815PB).

RNII became aware of the deviation in material during failure analysis of two customer Model 1153 transmitter sensor modules measuring pressurizer pressure. The failure analysis found that the sensor modules failed due to hydrogen permeation through the sensor isolating diaphragm. Hydrogen permeation can severely affect the performance of RNII pressure sensors. Material verification of the transmitter isolating diaphragms concluded the material was Monel Alloy 400 and not 316L SST.

A technical discussion of hydrogen permeation and of RNII transmitters with 3161L SST and Monel Alloy 400 isolating diaphragms is included in the enclosure entitled Attachment A.

RNII has concluded the use of Monel Alloy 400 is a deviation from design specifications for standard Model 1152, 1153 and 1154 transmitters. Accordingly, we are issuing this notification.

FISHER-ROSEMOUNT

9503220185
MAR 21 '95   07:07PM ROSEMOUNT NUCLEAR   P.2/9

10CFR21 Notification
Monel Alloy 400 Isolating Diaphragms
March 21, 1995

  1. Name and address of the individual providing the information:

    Mr. Mark Van Sloun
    Vice President & General Manager
    Rosemount Nuclear Instruments, Inc.
    12001 Technology Drive
    Eden Prairie, MN 55344

  2. Identification of items supplied:

    Certain Model 1152, 1153 and 1154 transmitters / sensor modules range 6 through 0. The specific transmitters and/or sensor module spare part kits shipped to your facility are identified in the enclosure entitled Attachment B. If the enclosed Attachment B states "No units shipped to your site" none of the affected transmitters and/or sensor modules were supplied to your site.

  3. Identification of firm supplying the item:

    Rosemount Inc. (predecessor to Rosemount Nuclear Instruments, Inc.)
    12001 Technology Drive
    Eden Prairie, MN 55344

  4. Nature of the failure and potential safety hazard:

    This notification is issued to inform all users of Model 1152, 1153 and 1154 transmitters / sensor modules which were manufactured with Monel Alloy 400 isolating diaphragms instead of the specified 316L SST. Model 1152, 1153 and 1154 transmitters are designed specifically for use in nuclear power plant applications. These models are generically designed and qualified per IEEE Std. 323 and 344 with 3161L SST isolating diaphragm material only.

    The use of affected transmitters can lead to hydrogen permeation through the isolating diaphragm under specific operating conditions. These conditions are described in detail in Attachment A. RNII does not have sufficient information to determine the safety impact related to plant applications. Licensees must determine the impact on plant operations and plant safety and take action as deemed necessary.

FISHER-ROSEMOUNT

MAR 21 '95   07:08PM ROSEMOUNT NUCLEAR                       P.3/9

10CFR21 Notification
Monel Alloy 400 Isolating Diaphragms
March 21, 1995

  1. The corrective action which is taken, the name of the individual or organization responsible for that action and the length of time taken to complete that action:

    RNII has identified two specific manufacturing lots of isolator assemblies for sensor modules in Model 1152, 1153 and 1154 nuclear qualified pressure and differential pressure transmitters which were supplied with Monel Alloy 400 isolating diaphragm material. The specific units applicable to your plant location are listed on the enclosure entitled Attachment B.

    RNII will timely complete internal corrective actions.

    Mr. Van Sloun is responsible for any further action related to this issue.

  2. Any advice related to the potential failure of the item:

    The enclosure entitled Attachment A details the information on the expected transmitter performance with Monel Alloy 400 isolating diaphragms. The end-user must determine the full scope of this deviation as it relates to plant operations and plant safety and take action as deemed necessary.

Rosemount Nuclear Instruments, Inc. has a strong commitment to the nuclear industry and assures you that we are dedicated to the supply of high quality products and services to our customers. We are sorry for any inconvenience. If there are any questions, or you require additional information related to this issue, please contact Tim Layer (612) 828-8240 or Jane Sandstrom and Ian Baldry (612) 828-8250.

Sincerely,

ROSEMOUNT NUCLEAR INSTRUMENTS, INC.

M. L. Van Sloun
Vice President & General Manager

encl.: Attachment A
  Attachment B

MVS:TJL

FISHER-ROSEMOUNT

MAR 21 '95   07:09PM ROSEMOUNT NUCLEAR                       P.4/9

ATTACHMENT A
10CFR21 Notification Dated March 21,1995

  1. Background

    RNII nuclear qualified pressure transmitters utilize the d-Cell capacitance sensing element to provide pressure measurement. Process pressure is transmitted from the isolating diaphragm and silicone fill oil to a sensing diaphragm in the center of the d-Cell. The displacement of the center diaphragm results in a sensor capacitance change proportional to the process pressure applied. The differential capacitance of the sensor is converted electronically to a 4-20 mA dc transmitter output signal.

    The isolating diaphragm isolates the process fluid from the sensor fill oil and transmits the process pressure to the sensing diaphragm. Rosemount commercial pressure transmitters are offered with a variety of isolating diaphragm materials, including 316 SST, Hastelloy, Monel Alloy 400, and Tantalum. 316L Stainless Steel Is the standard isolating diaphragm material offered for RNII nuclear qualified pressure and differential pressure transmitters.

    RNII has identified certain qualified nuclear transmitters and sensor modules which were manufactured with Monel Alloy 400 isolator diaphragms.

  2. Description of Monel Alloy 400

    Monel Alloy 400 is a nickel-copper alloy (66% Ni+Co / 32% Cu) which provides high strength, durability and corrosion resistance. Monel is resistant to most alkalis, salts, waters, food products and organic substances, both at normal and elevated temperatures. Monel is offered as an isolator material on Rosemount commercial pressure transmitters and option code T1815 for certain Model 1152 nuclear qualified transmitters. It is used in a variety of commercial processing applications. Due to its high nickel content, Monel is not recommended for applications where hydrogen is present in the process.

2.1   Hydrogen Permeation
    It is widely recognized that nickel and nickel alloys are susceptible to permeation by hydrogen. Monel Alloy 400, with a nominal nickel + cobalt content of 66%, is particularly susceptible, and is not recommended in applications where hydrogen is present in the process fluid.
     
    Hydrogen permeation can severely affect the performance of sensor modules. In simple terms, monatomic hydrogen permeates the isolator diaphragm and combines to form H2 inside the sensor cell. Gas inside the sensor will lead to measurement inaccuracies. RNII discovered the use of Monel Alloy 400 after two hydrogen permeation failures were found in a pressurizer measurement application at a customer's Pressurized Water Reactor (PWR). In this application, a small amount of hydrogen (approx. 40cc/kg at STP) was added to the reactor coolant process fluid for corrosion control. The transmitters functioned normally at a nominal pressure of 2250 PSI and temperature <104°F for sixteen months. The units were then

FISHER-ROSEMOUNT

MAR 21 '95   07:09PM ROSEMOUNT NUCLEAR   P.5/9

Attachment A
Page 2

    depressurized during a scheduled outage. As pressure was reapplied during plant start up, the transmitters failed (erratic output, off scale high).
     
2.2   Factors of Hydrogen Permeation
     
    Several factors are known to affect the rate of hydrogen permeation. First, the nickel content of the material directly affects the rate of permeation. Monel has a high nickel content and is therefore relatively susceptible to hydrogen permeation.
     
    A second factor is temperature. The rate of hydrogen permeation is exponentially related to temperature. For example, a reduction in temperature at the isolator of 20°F will decrease the rate of permeation by approximately a factor of 2.5.
     
    A third factor which affects the rate of hydrogen permeation is process pressure. The rate of hydrogen permeation is a function of the square root of pressure;. and, therefore, less critical than temperature.
     
    A fourth factor is the source of the hydrogen. Hydrogen can be cathodically generated on the face of the isolating diaphragm. This can occur when a galvanic cell is formed due to dissimilar metals in contact with the process fluid. For example, in the presence of an electrolyte such as water, a cadmium plated transmitter flange or zinc galvanized pipe or fitting near the nickel alloy (Monel) isolating diaphragm will set up a relatively large galvanic potential. Under these conditions, monatomic hydrogen is formed on the cathode, in this case the isolating diaphragm. The monatomic hydrogen will permeate the isolating diaphragm with relative ease and can combine on the other side to form hydrogen gas (H2), eventually affecting transmitter performance.
     
    A final factor is the relative hydrogen concentration difference between the process and oil side of the isolating diaphragm.
     
    RNII Model 1152, 1153, and 1154 nuclear qualified transmitters are generically designed and qualified exclusively with 316L SST isolating diaphragms. RNII has supplied some Model 1152 transmitters with Monel Alloy 400 isolating diaphragms under a specific option code "T1815". (Typical transmitter model number 1152DP5N22T1815PB).
     
    For the identified RNII transmitters with Monel isolating diaphragms and the remaining 316 SST parts that contact the process fluid, a small galvanic potential will be present due to the dissimilar materials. (The ideal situation is where all parts in contact with the process fluid are of the same material; thus no galvanic potential can exist.) The galvanic potential between 316 SST and Monel is small, and the two materials are listed as compatible for industrial use in MIL-STD-889 for Dissimilar Metals. Nonetheless, for hydrogen applications where Monel is already susceptible to permeation, the small galvanic potential present between the 316 SST parts and the Monel isolating diaphragms is undesirable.

FISHER-ROSEMOUNT

MAR 21 '95   07:10PM ROSEMOUNT NUCLEAR   P.6/9

Attachment A
Page 3

    In the two confirmed failures of RNII transmitters in a pressurizer reactor coolant application, the galvanic potential between the Monel isolating diaphragm and the other 316 SST parts in contact with the process fluid may have accelerated the hydrogen permeation rate. The hydrogen present in this application was dissolved in the water in the form of molecular hydrogen gas (H2). The galvanic potential was likely a catalyst to the formation of monatomic hydrogen, significantly increasing the rate of permeation. Monatomic hydrogen will eventually permeate through the Monel isolating diaphragm even in the absence of a galvanic catalyst, but at a slower rate.
     
2.3   Hydrogen Permeation Effect On Rosemount Pressure and Differential Transmitters
     
    As monatomic hydrogen permeates through the isolating diaphragm, it can combine to form hydrogen gas within the sensor. The hydrogen will be absorbed by the silicone oil. The volume of the oil and hydrogen will depend on the process pressure and solubility of hydrogen in silicone oil.
     
    During operation under pressure, a sensor with hydrogen under the isolator may not exhibit symptoms or erroneous output, as the hydrogen is completely dissolved in the silicone oil. This was the case with the two confirmed failures in a pressurizer application (See 2.1). The units reportedly operated normally during the 16 month period prior to the plant's outage. The hydrogen permeating the isolating diaphragm during this time had no apparent affect on the transmitter operation. However when pressure is released or significantly reduced, the hydrogen may outgas from the oil, and if sufficient hydrogen is present, the internal pressure may distend the isolating diaphragm. With liberated gas under the isolating diaphragm, the transmitter output will be erratic. The transmitter response would be unstable, and calibration would be difficult or impossible.
  1. Monel Alloy 400 Effect on Transmitter Normal Operating Functional Performance Specifications

    The affected transmitters, assembled with Monel Alloy 400 isolating diaphragms, are limited to range code 6 through 0. From the sensor assembly level, through module and transmitter assembly, the Monel assemblies were fully tested in accordance with our standard in-process and acceptance test procedures and found to perform within standard specifications. A partial list of these tests include: helium leak checks at the isolating diaphragm assembly and sensor assembly levels (weld integrity verification); high pressure aging of the sensors (glass to metal seal and weld integrity verification); temperature performance testing of the sensor module; overpressure and static pressure effects testing of the sensor module; hydrostatic pressure testing of the pressure retaining boundary (150%max. rated pressure); and standard transmitter calibration (linearity/hysterisis/accuracy verification).

FISHER-ROSEMOUNT

MAR 21 '95   07:11PM ROSEMOUNT NUCLEAR   P.7/9

Attachment A
Page 4

    The key difference is the physical difference in isolator material. Monel Alloy 400 is generally superior to 316 SST relative to corrosion resistance. However, the customer must evaluate the acceptability of Monel Alloy 400 as the process fluid interface in each application. Particular attention must be given to applications where hydrogen is present in the process fluid.
     
3.1   Monel Alloy 400 Effect on Transmitter Nuclear Qualification and Accident Specifications
     
    RNII has not performed an IEEE 323 qualification on pressure transmitters with Monel Alloy 400 isolators. Therefore, no physical test evidence is available to document performance under accident conditions.
     
    Monel Alloy 400 contains similar constituents as 316 SST, only in different relative composition percentages. RNII is not aware of any inherent limitations based on the composition of Monel Alloy 400 relative to performance under accident conditions. However, since no qualification testing has been performed on Monel sensors, RNII cannot verify the expected performance under accident conditions.
  1. Summary

    RNII has identified certain nuclear qualified transmitters and sensor modules which were manufactured with Monel Alloy 400 isolating diaphragms. Monel Alloy 400 sensor modules are not generically qualified per IEEE 323 or 344 for use with Model 1152, 1153, or 1154 pressure and differential pressure transmitters. RNII has supplied specific Model 1152 transmitters with Monel Alloy 400 isolating diaphragm material under option code "T1815". (Typical model number 1152DP5N22T1815PB).

    Monel Alloy 400 is a nickel alloy which provides high strength, durability and corrosion resistance. However, due to its high nickel content, Monel is not recommended for applications where hydrogen is present in the process fluid.

    There have been two confirmed failures due to hydrogen permeation of RNII Model 1153 transmitters with Monel Alloy 400 isolating diaphragms. Nickel content of the material, temperature, pressure, galvanic potential in the presence of an electrolyte and the relative concentration of hydrogen between the process fluid and the fill oil are key factors relative to hydrogen permeation.

FISHER-ROSEMOUNT

MAR 21 '95   07:12PM ROSEMOUNT NUCLEAR   P.8/9

Attachment A
Page 5

    During operation at pressure, a transmitter having hydrogen permeation may exhibit no symptoms or erroneous output, since the hydrogen is likely dissolved in the silicone fill oil. If pressure is relaxed, the hydrogen may outgas and distend the isolating diaphragm. Transmitter response to pressure and its output will then become erratic and detectable. The unit will be difficult or Impossible to calibrate.

    The affected transmitters / sensor modules with Monel Alloy 400 isolating diaphragms successfully passed all RNII manufacturing testing which indicates the units should operate within specifications under normal operating conditions where hydrogen is not present.

FISHER-ROSEMOUNT

MAR 21 '95   07:13PM ROSEMOUNT NUCLEAR   P.9/9

TO  US  NRC/DOTS
FISHER-ROSEMOUNT   Rosemount Nuclear Instruments, Inc.
12001 Technology Drive
Eden Prairie, MN 55344-3695
USA
     
DATE: March 21, 1995
PAGE(S) INCLUDING LEAD SHEET: 10





TO
FROM





COMPANY: NUCLEAR REGULATORY
COMMISSION

FAX NUMBER: (612) 828-8280





ATTENTION: MR. GREG CWALINA
SENDER: JERRY VALLEY





FAX NUMBER: 301-415-2968
PHONE NUMBER: (612) 828-8242





SUBJECT: PRELIMINARY MONEL SENSOR LIST






CC:

GREG,
PER YOUR REQUEST TO KEN EWALD, HERE IS THE LATEST LIST OF TRANSMITTERS AND/OR MODULES AFFECTED BY THE MONEL DIAPRAGM ISSUE. YOU WILL NOTE THAT THERE ARE SEVEN MODULES STILL NOT ACCOUNTED FOR. WE ARE CONTINUING TO PURSUE THESE.

REGARDS,

JERRY VALLEY


PAGE STAMPED: PRELIMINARY

SENSORS THAT CONTAIN ISOLATOR MATERIAL FROM LOT 020 OF 01153-0252-0042

01153-0264 (SENSOR) ALL MODULES MUST BE ACCOUNTED FOR. IF MODULE OR SENSOR WAS SCRAPPED, ENTER SCRAP IN THE CUSTOMER COLUMN.
SERIAL NUMBER RANGE
BEGINNING
SERIAL
NUMBER
ENDING
SERIAL
NUMBER
DASH
NUMBER
MODULE
SERIAL
NUMBER
X-MITTER
SERIAL
NUMBER
HOUSE
ORDER
NUMBER
CUSTOMER
2332402 2332429 -0062 2332413 412403A 767765 Florida Power & Light
2332402 2332429 -0062 2332420 0501197 153022 Florida Power & Light
2336503 2336530 -0092 2336507 411719A 767765 Florida Power & Light
2336503 2336530 -0092 2336508 411708A 767765 Florida Power & Light
2336531 2336555 -0092 2336550 410278A 767765 Florida Power & Light
2294327 2294354 -0062 2294327 0500764 445351 Georgia Power
2336503 2336530 -0092 2336504 410643A 767770 Georgia Power
2336503 2336530 -0092 2336523 MODULE 153219 GPU 01153-0320-0192
2336531 2336655 -0092 2336535 MODULE 153219 GPU 01153-0320-0192
2290445 2290472 -0092 2290448 413411A 765502 Gulf States
2294327 2294354 -0062 2294337 411630A 767596 Gulf States
2294327 2294354 -0062 2294340 410905A 767596 Gulf States
2332402 2332429 -0062 2332419 411628A 767596 Gulf States
2332402 2332429 -0062 2332421 418334A 767596 Gulf States
2290473 2290500 -0092 2290474 0501434 153110 Houston
2336503 2336530 -0092 2336525 0501432 153110 Houston
2336531 2336555 -0092 2336537 0501433 153110 Houston
2293790 2293812 -0072 2293807 418076A 766328 Illinois Power
2306812 2306839 -0092 2306823 0420727A 768725 Maine Yankee
2306812 2306839 -0092 2306829 0501325 153120 Maine Yankee
2290445 2290472 -0092 2290449 0501072 153004 New Hampshire
2290445 2290472 -0092 2290456 0501073 153004 New Hampshire
2290445 2290472 -0092 2290461 0501071 153004 New Hampshire
2306812 2306839 -0092 2306827 0501070 153004 New Hampshire
2307367 2307394 -0082 2307370 0422348A 766954 New Hampshire
2307367 2307394 -0082 2307374 0422346A 766954 New Hampshire
2307367 2307394 -0082 2307392 0422349A 766954 New Hampshire
2317180 2317202 -0082 2317200 0422347A 766954 New Hampshire
2306784 2306811 -0092 2306808 0500742 152970 New York Power
2306812 2306839 -0092 2306824 410547A 768236 New York Power
2294327 2294354 -0062 2294339 MODULE 152993 New York Power 01153-0320-0162
2332402 2332429 -0062 2332407 MODULE 152993 New York Power 01153-0320-0162
2332402 2332429 -0062 2332409 MODULE 152993 New York Power 01153-0320-0162
2307307 2307334 -0072 2307319 0420968A 768350 Niagara Mohawk
2336503 2336530 -0092 2336511 0419545A 767761 Niagara Mohawk
2336503 2336530 -0092 2336517 0419548A 767761 Niagara Mohawk
2336531 2336555 -0092 2336536 0419547A 767761 Niagara Mohawk
2336531 2336555 -0092 2336540 0419058A 767761 Niagara Mohawk
2236531 2336555 -0092 2336554 0419546A 767761 Niagara Mohawk
2290445 2290472 -0092 2290453 0418816A 767159 NSP
2294327 2294354 -0062 2294331 0420673A 767159 NSP
2306812 2306839 -0092 2306819 0420363A 767159 NSP
2306812 2306839 -0092 2306822 0418758A 767159 NSP
2306812 2306839 -0092 2306835 409963A 767159 NSP
2336503 2336530 -0092 2336505 0420362A 767159 NSP
2336503 2336530 -0092 2336506 410286A 767159 NSP
2336503 2336530 -0092 2336514 0418817A 767159 NSP
2336531 2336555 -0092 2336541 0420364A 767159 NSP
2336531 2336555 -0092 2336542 0418818A 767159 NSP
2336531 2336555 -0092 2336546 0420361A 767159 NSP
2336531 2336555 -0092 2336548 0418757A 767159 NSP
2306784 2306811 -0092 2306799 0500882 153097 Omaha Public Power
2328071 2328104 -0092 2328079 0500883 153097 Omaha Public Power
03/21/95                             3

PAGE STAMPED: PRELIMINARY

SENSORS THAT CONTAIN ISOLATOR MATERIAL FROM LOT 020 OF 01153-0252-0042

01153-0264 (SENSOR) ALL MODULES MUST BE ACCOUNTED FOR. IF MODULE OR SENSOR WAS SCRAPPED, ENTER SCRAP IN THE CUSTOMER COLUMN.
SERIAL NUMBER RANGE
BEGINNING
SERIAL
NUMBER
ENDING
SERIAL
NUMBER
DASH
NUMBER
MODULE
SERIAL
NUMBER
X-MITTER
SERIAL
NUMBER
HOUSE
ORDER
NUMBER
CUSTOMER
2328071 2328104 -0092 2328088 0500881 153097 Omaha Public Power
2328071 2328104 -0092 2328095 0500884 153097 Omaha Public Power
2290501 2290506 -0092 2290503 0501179 153104 Pacific Gas
2328071 2328104 -0092 2328103 0501180 153104 Pacific Gas
2307307 2307334 -0072 2307311 MODULE 445460 Pennsylvania 01152-0003--0172
2293790 2293812 -0072 2293809 0500690 153040 Philadelphia
2293790 2293812 -0072 2293810 0500657 153040 Philadelphia
2307307 2307334 -0072 2307312 0500691 153040 Philadelphia
2307307 2307334 -0072 2307334 0500689 153040 Philadelphia
2307367 2307394 -0082 2307369 0500629 445395 Philadelphia
2336503 2336530 -0092 2336519 0422136A 768067 Philadelphia
2336503 2336530 -0092 2336528 0422135A 768067 Philadelphia
2336503 2336530 -0092 2336529 0422137A 768067 Philadelphia
2306784 2306811 -0092 2306768 0501077 153122 Portland GE
2306812 2306839 -0092 2306814 0501076 153122 Portland GE
2306812 2306839 -0092 2306832 0501081 153122 Portland GE
2306812 2306839 -0092 2306839 0501078 153122 Portland GE
2306840 2306846 -0092 2306842 0501080 153122 Portland GE
2290445 229047? -0092 2290445 410577 765320 Public Service
2307367 2307394 -0082 2307389 414752A 763073 Public Service
2332402 2332429 -0062 2332427 0501481 153161 Public Service
2336503 2336530 -0092 2336515 0501491 153223 Public Service
2336503 2336530 -0092 2336516 0501490 153223 Public Service
2336503 2336530 -0092 2336518 0501493 153223 Public Service
2336531 2336555 -0092 2336538 0501492 153223 Public Service
2290473 2290500 -0092 2290494 0501918 57187 RMT Canada
2294327 2294354 -0062 2294343 0501005 53719 RMT Canada
2294327 2294354 -0062 2294345 0500604 53776 RMT Canada
2294327 2294354 -0062 2294352 0500603 53776 RMT Canada
2307307 2307334 -0072 2307308 0500808 53719 RMT Canada
2307367 2307394 -0082 2307393 0501537 56653 RMT Canada
2307395 2307402 -0082 2307396 0501510 56653 RMT Canada
2307395 2307402 -0082 2307398 0501511 56653 RMT Canada
2307395 2307402 -0082 2307399 0501539 56653 RMT Canada
2307395 2307402 -0082 2307402 0501508 56653 RMT Canada
2332430 2332444 -0062 2332430 0501919 57187 RMT Canada
2332430 2332444 -0062 2332441 0501920 57187 RMT Canada
2336503 2336530 -0092 2336503 0501566 55588 RMT Korea
2336503 2336530 -0092 2336513 0501562 55588 RMT Korea
2336531 2336555 -0092 2336552 0501565 55588 RMT Korea
2307367 2307394 -0082 2307375 0500781 53264 RMT Netherlands
2293790 2293812 -0072 2293790 0500597 52241 RMT Ohkura
2307307 2307334 -0072 2307310 0500688 52241 RMT Ohkura
2307395 2307402 -0082 2307395 0501162 55263 RMT Ohkura
2290473 2290500 -0092 2290496 0501944 55444 RMT Singapore
2290473 2290500 -0092 2290497 0501942 55444 RMT Singapore
2290473 2290500 -0092 2290500 0501938 55444 RMT Singapore
2290501 2290506 -0092 2290502 0501936 55444 RMT Singapore
2290501 2290506 -0092 2290504 0501937 55444 RMT Singapore
2307367 2307394 -0082 2307394 0501927 55444 RMT Singapore
2307395 2307402 -0082 2307397 0502161 55444 RMT Singapore
2307395 2307402 -0082 2307401 0501928 55444 RMT Singapore
2290445 2290472 -0092 2290464 0500728 53047 RMT Spain
03/21/95                             4

PAGE STAMPED: PRELIMINARY

SENSORS THAT CONTAIN ISOLATOR MATERIAL FROM LOT 020 OF 01153-0252-0042

01153-0264 (SENSOR) ALL MODULES MUST BE ACCOUNTED FOR. IF MODULE OR SENSOR WAS SCRAPPED, ENTER SCRAP IN THE CUSTOMER COLUMN.
SERIAL NUMBER RANGE
BEGINNING
SERIAL
NUMBER
ENDING
SERIAL
NUMBER
DASH
NUMBER
MODULE
SERIAL
NUMBER
X-MITTER
SERIAL
NUMBER
HOUSE
ORDER
NUMBER
CUSTOMER
2290473 2290500 -0092 2290487 0501425 54834 RMT Spain
2294327 2294354 -0062 2294342 0500602 52248 RMT Spain
2306784 2306811 -0092 2306803 0500727 53047 RMT Spain
2307367 2307394 -0082 2307367 0501561 54888 RMT Spain
2307367 2307394 -0082 2307376 MODULE Expedite RMT Spain 01153-0320-0182
2317180 2317202 -0082 2317187 MODULE Expedite RMT Spain 01153-0320-0182
2306784 2306811 -0092 2306788 MODULE Expedite RMT Spain 01153-0320-0192
2332430 2332444 -0062 2332437 MODULE 91330 RMT Spain 01152-0007-0062
2290445 2290472 -0092 2290460 MODULE 55096 RMT Spain 01153-0320-0192
2290445 2290472 -0092 2290466 MODULE 55096 RMT Spain 01153-0320-0192
2290445 2290472 -0092 2290468 MODULE 55096 RMT Spain 01153-0320-0192
2290445 2290472 -0092 2290471 MODULE 55096 RMT Spain 01153-0320-0192
2290473 2290500 -0092 2290486 MODULE 55096 RMT Spain 01153-0320-0192
2306784 2306811 -0092 2306791 MODULE 55096 RMT Spain 01153-0320-0192
2306784 2306811 -0092 2306798 MODULE 55096 RMT Spain 01153-0320-0192
2306812 2306839 -0092 2306820 MODULE 55096 RMT Spain 01153-0320-0192
2306840 2306846 -0092 2306841 MODULE 55096 RMT Spain 01153-0320-0192
2336503 2336530 -0092 2336527 MODULE 55941 RMT Spain 01153-0320-0192
2336531 23365?5 -0092 2336543 MODULE 55941 RMT Spain 01153-0320-0192
2290473 2290500 -0092 2290484 MODULE 55096 RMT Spain 01153-0320-0192
2332402 2332429 -0062 2332429 0501498 54320 RMT Sweden
2332430 2332444 -0062, 2332439 0501499 54320 RMT Sweden
2290473 2290500 -0092 2290491 0501161 54541 RMT Switzerland
2290473 2290500 -0092 2290493 0501160 54541 RMT Switzerland
2990501 2290506I -0092 2290501 0501943 55444 RMT Singapore
2290445 2290472 -0092 2290446

Scrapped
2290445 2290472 -0092 2290450

Scrapped
2290445 2290472 -0092 2290458

Scrapped
2290445 2290472 -0092 2290459

Scrapped
2290445 2290472 -0092 2290462

Scrapped
2290473 2290500 -0092 2290475

Scrapped
2290473 2290500 -0092 2290478

Scrapped
2290473 2290500 -0092 2290479

Scrapped
2290473 2290500 -0092 2290481

Scrapped
2290473 2290500 -0092 2290482

Scrapped
2290473 2290500 -0092 2290485

Scrapped
2290473 2290500 -0092 2290490

Scrapped
2290473 2290500 -0092 2290492

Scrapped
2290473 2290500 -0092 2290499

Scrapped
2290501 2290506 -0092 2290505

Scrapped
2293790 2293812 -0072 2293792

Scrapped
2293790 2293812 -0072 2293795

Scrapped
2293790 2293812 -0072 2293802

Scrapped
2293790 2293812 -0072 2293806

Scrapped
2293790 2293812 -0072 2293808

Scrapped
2294327 2294354 -0062 2294336

Scrapped
2294327 2294354 -0062 2294341

Scrapped
2294327 2294354 -0062 2294344

Scrapped
2294355 2294355 -0062 2294355

Scrapped
2306784 2306811 -0092 2306784

Scrapped
2306784 2306811 -0092 2306785

Scrapped
2306784 2306811 -0092 2306789

Scrapped
2306784 2306811 -0092 2306790

Scrapped
03/21/95                             5

PAGE STAMPED: PRELIMINARY

SENSORS THAT CONTAIN ISOLATOR MATERIAL FROM LOT 020 OF 01153-0252-0042

01153-0264 (SENSOR) ALL MODULES MUST BE ACCOUNTED FOR. IF MODULE OR SENSOR WAS SCRAPPED, ENTER SCRAP IN THE CUSTOMER COLUMN.
SERIAL NUMBER RANGE
BEGINNING
SERIAL
NUMBER
ENDING
SERIAL
NUMBER
DASH
NUMBER
MODULE
SERIAL
NUMBER
X-MITTER
SERIAL
NUMBER
HOUSE
ORDER
NUMBER
CUSTOMER
2306784 2306811 -0092 2306793

Scrapped
2306784 2306811 -0092 2306798

Scrapped
2306784 2306811 -0092 2306802

Scrapped
2306784 2306811 -0092 2306804

Scrapped
2306784 2306811 -0092 2306811

Scrapped
2306812 2306839 -0092 2306825

Scrapped
2306812 2306839 -0092 2306826

Scrapped
2306812 2306839 -0092 2306828

Scrapped
2306812 2306839 -0092 2306836

Scrapped
2306812 2306839 -0092 2306837

Scrapped
2308812 2306839 -0092 2306838

Scrapped
2306840 2306846 -0092 2308843

Scrapped
2306840 2306846 -0092 2306844

Scrapped
2306840 2306846 -0092 2308846

Scrapped
2306847 2306854 -0002 2306848

Scrapped
2306847 2306854 -0002 2306850

Scrapped
2306847 2306854 -0002 2306852

Scrapped
2307307 2307334 -0072 2307309

Scrapped
2307307 2307334 -0072 2307316

Scrapped
2307307 2307334 -0072 2307321

Scrapped
2307307 2307334 -0072 2307325

Scrapped
2307307 2307334 -0072 2307327

Scrapped
2307307 2307334 -0072 2307333

Scrapped
2307367 2307394 -0082 2307373

Scrapped
2307367 2307394 -0082 2307382

Scrapped
2307367 2307394 -0082 2307386

Scrapped
2307367 2307394 -0082 2307390

Scrapped
2307395 2307402 -0082 2307400

Scrapped
2317180 2317202 -0082 2317180

Scrapped
2317180 2317202 -0082 2317181

Scrapped
2317180 2317202 -0082 2317182

Scrapped
2317180 2317202 -0082 2317183

Scrapped
2317180 2317202 -0082 2317184

Scrapped
2317180 2317202 -0082 2317185

Scrapped
2317180 2317202 -0082 2317186

Scrapped
2317180 2317202 -0082 2317188

Scrapped
2317180 2317202 -0082 2317189

Scrapped
2317180 2317202 -0082 2317190

Scrapped
2317180 2317202 -0082 2317191

Scrapped
2317180 2317202 -0082 2317193

Scrapped
2317180 2317202 -0082 2317194

Scrapped
2317180 2317202 -0082 2317195

Scrapped
2317180 2317202 -0082 2317197

Scrapped
2317180 2317202 -0082 2317198

Scrapped
2317180 2317202 -0082 2317201

Scrapped
2317180 2317202 -0082 2317202

Scrapped
2317203 2317230 -0072 2317203

Scrapped
2317203 2317230 -0072 2317204

Scrapped
2317203 2317230 -0072 2317205

Scrapped
2317203 2317230 -0072 2317206

Scrapped
2317203 2317230 -0072 2317207

Scrapped
2317203 2317230 -0072 2317208

Scrapped
2317203 2317230 -0072 2317209

Scrapped
03/21/95                             6

PAGE STAMPED: PRELIMINARY

SENSORS THAT CONTAIN ISOLATOR MATERIAL FROM LOT 020 OF 01153-0252-0042

01153-0264 (SENSOR) ALL MODULES MUST BE ACCOUNTED FOR. IF MODULE OR SENSOR WAS SCRAPPED, ENTER SCRAP IN THE CUSTOMER COLUMN.
SERIAL NUMBER RANGE
BEGINNING
SERIAL
NUMBER
ENDING
SERIAL
NUMBER
DASH
NUMBER
MODULE
SERIAL
NUMBER
X-MITTER
SERIAL
NUMBER
HOUSE
ORDER
NUMBER
CUSTOMER
2317203 2317230 -0072 2317210

Scrapped
2317203 2317230 -0072 2317211

Scrapped
2317203 2317230 -0072 2317213

Scrapped
2317203 2317230 -0072 2317214

Scrapped
2317203 2317230 -0072 2317215

Scrapped
2317203 2317230 -0072 2317216

Scrapped
2317203 2317230 -0072 2317217

Scrapped
2317203 2317230 -0072 2317219

Scrapped
2317203 2317230 -0072 2317220

Scrapped
2317203 2317230 -0072 2317221

Scrapped
2317203 2317230 -0072 2317222

Scrapped
2317203 2317230 -0072 2317223

Scrapped
2317203 2317230 -0072 2317224

Scrapped
2317203 2317230 -0072 2317225

Scrapped
2317203 2317230 -0072 2317226

Scrapped
2317203 2317230 -0072 2317227

Scrapped
2317203 2317230 -0072 2317228

Scrapped
2317203 2317230 -0072 2317229

Scrapped
2317203 2317230 -0072 2317230

Scrapped
2317231 2317237 -0072 2317231

Scrapped
2317231 2317237 -0072 2317232

Scrapped
2317231 2317237 -0072 2317233

Scrapped
2317231 2317237 -0072 2317234

Scrapped
2317231 2317237 -0072 2317235

Scrapped
2317231 2317237 -0072 2317236

Scrapped
2317231 2317237 -0072 2317237

Scrapped
2328071 2328104 -0092 2328080

Scrapped
2328071 2328104 -0092 2328090

Scrapped
2328071 2325104 -0092 2328092

Scrapped
2328071 2328104 -0092 2328097

Scrapped
2328105 2328116 -0092 2328106

Scrapped
2328105 2328116 -0092 2328114

Scrapped
2332402 2332429 -0062 2332410

Scrapped
2332402 2332429 -0062 2332414

Scrapped
2332402 2332429 -0062 2332415

Scrapped
2332402 2332429 -0062 2332424

Scrapped
2332402 2332429 -0062 2332426

Scrapped
2332402 2332429 -0062 2332428

Scrapped
2332430 2332444 -0062 2332434

Scrapped
2332430 2332444 -0062 2332440

Scrapped
2332430 2332444 -0062 2332442

Scrapped
2332430 2332444 -0062 2332443

Scrapped
2336503 2336530 -0092 2336512

Scrapped
2336503 2336530 -0092 2336521

Scrapped
2336503 2338530 -0092 2336524

Scrapped
2336531 2336555 -0092 2336531

Scrapped
2336531 2336555 -0092 2336532

Scrapped
2336531 2336555 -0092 2336539

Scrapped
2336531 2336555 -0092 2336544

Scrapped
2336531 2336555 -0092 2336555

Scrapped
2294327 2294354 -0062 2294346

Scrapped (Eng. (HO44326, SN0500587))
2294327 2294354 -0062 2294347

Scrapped (Eng. (HO44326, SN0500709))
2294327 2294354 -0062 2294349

Scrapped (Eng. (HO44326, SN0500710))
03/21/95                             7

PAGE STAMPED: PRELIMINARY

SENSORS THAT CONTAIN ISOLATOR MATERIAL FROM LOT 020 OF 01153-0252-0042

01153-0264 (SENSOR) ALL MODULES MUST BE ACCOUNTED FOR. IF MODULE OR SENSOR WAS SCRAPPED, ENTER SCRAP IN THE CUSTOMER COLUMN.
SERIAL NUMBER RANGE
BEGINNING
SERIAL
NUMBER
ENDING
SERIAL
NUMBER
DASH
NUMBER
MODULE
SERIAL
NUMBER
X-MITTER
SERIAL
NUMBER
HOUSE
ORDER
NUMBER
CUSTOMER
2290445 2290472 -0092 2290454

Scrapped (Not on aging log)
2290445 2290472 -0092 2290465

Scrapped (Not on aging log)
2290445 2290472 -0092 2290467

Scrapped (Not on aging log)
2290473 2290500 -0092 2290498

Scrapped (Not on aging log)
2293790 2293812 -0072 2293796

Scrapped (Not on aging log)
2293790 2293812 -0072 2293798

Scrapped (Not on aging log)
2306784 2306811 -0092 2306794

Scrapped (Not on aging log)
2306784 2306811 -0092 2306801

Scrapped (Not on aging log)
2306784 2306811 -0092 2306809

Scrapped (Not on aging log)
2306812 2306839 -0092 2306834

Scrapped (Not on aging log)
2307307 2307334 -0072 2307307

Scrapped (Not on aging log)
2307335 2307336 -0072 2307335

Scrapped (Not on aging log)
2307367 2307394 -0082 2307380

Scrapped (Not on aging log)
2307367 2307394 -0082 2307384

Scrapped (Not on aging log)
2307367 2307394 -0082 2307387

Scrapped (Not on aging log)
2317180 2317202 -0082 2317199

Scrapped (Not on aging log)
2317203 2317230 -0072 2317212

Scrapped (Not on aging log
2317203 2317230 .0072 2317218

Scrapped (Not on aging log)
2328071 2328104 -0092 2328081

Scrapped (Not on aging log)
2328071 2328104 -0092 2328084

Scrapped (Not on aging log)
2328071 2328104 -0092 2328085

Scrapped (Not on aging log)
2328071 2328104 -0092 2328093

Scrapped (Not on aging log)
2328071 2328104 -0092 2328098

Scrapped (Not on aging log)
2328071 2328104 -0092 2328101

Scrapped (Not on aging log)
2328071 2328104 -0092 2328102

Scrapped (Not on aging log)
2328105 2328116 -0092 2328110

Scrapped (Not on aging log)
2332402 2332429 -0062 2332412

Scrapped (Not on aging log)
2332402 2332429 -0062 2332418

Scrapped (Not on aging log)
2336503 2336530 -0092 2336509

Scrapped (Not on aging log)
2336503 2336530 -0092 2336510

Scrapped (Not on aging log)
2336503 2336530 -0092 2336522

Scrapped (Not on aging log)
2336503 2336530 -0092 2336526

Scrapped (Not on aging log)
2336531 2336555 -0092 2336547

Scrapped (Not on aging log)
2336531 2336555 -0092 2336549

Scrapped (Not on aging log)
2307367 2307394 -0082 2307377

Scrapped (Not on aging log)
2336503 2336530 -0092 2336520

Scrapped (Not on aging log)
2332402 2332429 -0062 2332403 0500955 153090 South Carolina
2332402 2332429 -0062 2332411 0500954 153090 South Carolina
2332402 2332429 -0062 2332416 0500956 153090 South Carolina
2332402 2332429 -0062 2332423 0500957 153090 South Carolina
2336531 2336555 -0092 2336533 MODULE 767763 Southern Cal. Edison 01153-0320-0192
2336531 2336555 -0092 2336553 MODULE 767763 Southern Cal. Edison 01153-0320-0192
2290473 2290500 -0092 2290476 0501176 153032 Systems Energy
2290473 2290500 -0092 2290477 0501175 153032 Systems Energy
2290473 2290500 -0092 2290483 0501177 153032 Systems Energy
2290473 2290500 -0092 2290488 0501174 153032 Systems Energy
2307307 2307334 -0072 2307317 0501123 153032 Systems Energy
2307307 2307334 -0072 2307322 0501125 153032 Systems Energy
2307307 2307334 -0072 2307331 0501109 153032 Systems Energy
2294327 2294354 -0062 2294332 0500705 152976 Toledo Edison
2332402 2332429 -0062 2332425 418432A 767142 Toledo Edison
2290445 2290472 -0092 2290452 0500570 445220 TU Electric
2332430 2332444 -0062 2332438 0503469 169612 TU Electric
03/21/95                             8

PAGE STAMPED: PRELIMINARY

SENSORS THAT CONTAIN ISOLATOR MATERIAL FROM LOT 020 OF 01153-0252-0042

01153-0264 (SENSOR) ALL MODULES MUST BE ACCOUNTED FOR. IF MODULE OR SENSOR WAS SCRAPPED, ENTER SCRAP IN THE CUSTOMER COLUMN.
SERIAL NUMBER RANGE
BEGINNING
SERIAL
NUMBER
ENDING
SERIAL
NUMBER
DASH
NUMBER
MODULE
SERIAL
NUMBER
X-MITTER
SERIAL
NUMBER
HOUSE
ORDER
NUMBER
CUSTOMER
2294327 2294354 -0062 2294354 0500703 445400 TVA
2328071 2328104 -0092 2328104 0501112 445486 TVA
2328105 2328116 -0092 2328113 0501136 445486 TVA
2328105 2328116 -0092 2328115 0501136 445486 TVA
2332430 2332444 -0062 2332435 0501535 445486 TVA
2336531 2336555 -0092 2336545 0501441 153191 Vermont Yankee
2307367 2307394 -0082 2307378 0500716 445383 Virginia Electric
2290445 2290472 -0092 2290463 0500585 445317 Washington
2290445 2290472 -0092 2290470 0500584 445317 Washington
2307335 2307336 -0072 2307336 0501131 153181 Washington Public
2307367 2307394 -0082 2307372 0501869 169070 Westinghouse
2307367 2307394 -0082 2307379 0501872 169070 Westinghouse
2307367 2307394 -0082 2307383 0501868 169070 Westinghouse
2307367 2307394 -0082 2307385 0501874 169070 Westinghouse
2317180 2317202 -0082 2317196 0501873 169070 Westinghouse
2294327 2294354 -0062 2294348 0500775 445461 Wolf Creek
2294327 2294354 -0062 2294353 0500774 445461 Wolf Creek
2332430 2332444 -0062 2332432 0501075 153024 Wolf Creek
2307367 2??7394 -0082 2307371 0500724 445465 Yankee Atomic
2307367 2?07394 -0082 2307381 0500723 445465 Yankee Atomic
03/21/95                             9

Page Last Reviewed/Updated Thursday, March 29, 2012