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| {{Adams
| | #REDIRECT [[05000327/LER-1980-028-01, Main Steam Header Pressure Transmitters 1-PT-1-2B,-9A,-9B,-20A,-20B & 27B Found to Lack Environ Qualification.Caused by Design Error]] |
| | number = ML19309F352
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| | issue date = 04/24/1980
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| | title = /01T-0:on 800411,main Steam Header Pressure Transmitters 1-PT-1-2B,-9A,-9B,-20A,-20B & -27B Found to Lack Environ Qualification to Substantiate long-term post-high Energy Line Break Operation.Replacement Ordered
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| | author name = Hereford J
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| | author affiliation = TENNESSEE VALLEY AUTHORITY
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| | addressee name =
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| | addressee affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
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| | docket = 05000327
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| | license number =
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| | contact person =
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| | document report number = LER-80-028-01T, LER-80-28-1T, NUDOCS 8004290316
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| | package number = ML19309F351
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| | document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
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| | page count = 2
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| }}
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| {{LER
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| | Title = /01T-0:on 800411,main Steam Header Pressure Transmitters 1-PT-1-2B,-9A,-9B,-20A,-20B & -27B Found to Lack Environ Qualification to Substantiate long-term post-high Energy Line Break Operation.Replacement Ordered
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| | Plant =
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| | Reporting criterion =
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| | Power level =
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| | Mode =
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| | Docket = 05000327
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| | LER year = 1980
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| | LER number = 28
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| | LER revision = 1
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| | Event date =
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| | Report date =
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| | ENS =
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| | abstract =
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| }}
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| =text=
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| {{#Wiki_filter:.
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| g j while the instruments are qualified for 130 degrees F operation. Replace t 1 the existing transmitters with codel capable of withstanding the accident
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| s Tannessas Vallsy Authority Szquoyah Nuclear Plant LER SUPPLEMENTAL INFOP3!ATION SQRO 327/8028 Technical rpecification Involved None Reported Under Technical Specificaticn 6.9.1.12.1 Date of Occurrence: 4/11/80 Time of Occurrence: 0750 EST Identification and Description of Occurrence:
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| The following Westin'ghouse Class lE pressure transmitters (Foxboro EllGM-HSAE1) located outside containment in the main steam valve rooms do not have the necessary environmental qualifications to substantiate their required long-term operation following a high energy line break:
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| TVA Tag Nos. PT-1-23, 9A, 93, 20A, 203, and 27B (W Nos. 515, 524, 525, 534, 535, and 545).
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| NOTE: PT-1-12 and 23 are deleted from this report (they were included in the telecopy of this occurrence transmitted 4/14/80).
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| Since these instruments are located in a separate roo= and not in the valve roo=s as originally reported.
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| Conditions Prior to Occurrence:
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| Unit in Mode 5 with all fuel loaded.
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| Action specified in the Technical Specification Surveillance Requirements met due to inoperabic eauipment. Describe.
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| 4 N/A Apparent Cause of Occurrence:
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| As shown in FSAR table 3.11-2 the expected temperature can reach greater than 290 F while the instruments are qualified for 1300 F operation.
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| Analysis of Occurrence:
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| Should a high energy line break in the =ain steam valve room, the main steam pressure transmitters possibly would not be capable of performing their intended post accident functions.
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| There was,no ha:ard to public health and safety.
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| CorrectiveAction$
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| Subject transmitters are to be replaced with those capable of withstanding the accident environment in main steam valve rooms. This will be completed prior to entry into Mode 3.
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| Failure Data:
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| N/A
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| }}
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| {{LER-Nav}}
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