ML17139B652
| ML17139B652 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 07/08/1983 |
| From: | Heltemes C NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD) |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML17139B653 | List: |
| References | |
| AEOD-E315, NUDOCS 8308040670 | |
| Download: ML17139B652 (4) | |
Text
JUL 8 1S83 XEU AEOD RF EJBrown KSeyfrit
. CHel temes NRC POR 3 E7 YIEYIORAHDUH FOR:
Harold R ~ Denton,. Director Office of fluclear Reactor Regulation AEOD/E315 FROM:
SUBJECT:
C. J Hel temes, Jr, Director Office for Analysis and Evaluation of Operational Data I1ISUSE OF VALVE RESULTING IN VIBRATION AND DOGE TO THE VALVE ASSEMBLY-AND PIPE SUPPORTS A recently completed Engineering Evaluation. Repor t on the above subject is enclosed.
Our evaluation concluded that severe damage to the LPCI system injection valve was directly related to RHR system flow limitations that result from a combination of system design, configuration, flow control
- system, and a 1 ow 1 evel of decay heat.
Further,. cement intermittent operation of.the RHR system in the shutdotl cooling. mode has the potential for cumul ati ve damage and may be rel ated to the valve operator motor burn-out that occurred in one of the events.
He believe it.would be appropriate to review RHR system operation for compatibility with valve assembly design and qualification requirements.
By separate memorandum,.
we are recomaending that IE prepare an information notice to cover the extent of valve and pipesupport damage and the systen conditions that led to the misuse of the valve.
cc:
R. C. DeYoung, IE E. L. Jordan, IE T. E. Nurley, Region I PgglIIel S1gned by g,'J Iteltemes, Jr.
C. J: Heltemes, Jr., Director Office for Analysis and Evaluation of Operational Data 8308040670 830708 PDR ADOCK 05000387 8
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JUL 8
- 1S83, AEOD RF-EBrown KSeyfrit CHeltemes l)c. S v tlENORANDUM FOR:
Edward L.. Jor dan, Director Division of Emergency Preparedness and Engineering
Response
Office of Inspection and Enforcement AEOD/E315 FROW:
C. J. Heltemes, Jr., Director Office for Analysis and Evaluation of Operational Data MISUSE OF VALVE RESULTING IN VIBRATION AND DNQGE TO THE VALVE ASSEI/lBLY AND PIPE SUPPORTS I
A recently completed Engineering Evaluation. Report on the above subject is enclosed..0ur evaluation concludes that severe damage to I'4e LPCI system injection valve was directly related to RHR system flow liiiritations'hat resul t >f'rom a combination of system design, configuration, f1 ow control
- system, and a low level of decay heat Subsequent to the initial damage, but suspected to be re'Iated to that 1ylbration, this valve was found with the disc separated from the stem.
He recommend that an,information. notice be prepared to discuss the damage that can result from ltiltsuse of a valve.,
By separate memorandum, we are suggesting that NRR may want to review the RHR system oper ation f'r compatibility with valve assembly design and qualification requirements.
Origln8l Slgn8d by, C.'J. Heltemes, JF C.- J. Heltemes, Jr., Director Office for Analysis and Evaluation of Operati on al Data cc:
H. R.- Denton, NRR T. E. Veriey, Region I R. C. DeYoung, IE ROAB Brown:
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