ML20024A986
| ML20024A986 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 08/17/1979 |
| From: | Elliott N BABCOCK & WILCOX CO. |
| To: | Banwarth C BABCOCK & WILCOX CO. |
| References | |
| TASK-01, TASK-1, TASK-GB GPU-0052, GPU-52, NUDOCS 8307010254 | |
| Download: ML20024A986 (2) | |
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THE Bf.* COCK & WILCOX Cu4PANY PO'aER GENERATION GROUP To l
C. S. Banvarth. Safety Analysis From 805 **3 8 N. S. giliott. Manager. Training Services File No.
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or Ref.
I Date Subj.
August 17, 1979 Successive Depressurization Event l s. e
.. ~ e N. S. Elliott, FSC dated 7/30/79, including seno dated July References A.
17, 1979 PSC 25-79 5.
C. W. Banvarth, meno dated July SO 1979 C.
E. A. Wocack, neos dated August 6.1979 In response to your request for written description of Training Services actions to assist in the subsequent prevention of a TMI-2 like event and this one described in Reference A and further addressed in References 5 and C, the following actions have been taken.
The initiating event sequence as described in Reference A has been used 1.
in our requalification training prograns.nd will continue to be used l
in the future. This sequence of events u usp to demonstrate to the I'
j students the necessity to utiliae Tsat and 5f. subcooled cargin.
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The TMI-2 sequence is presented to all new personnel preparing for l
license exaninstion and de=onstrated on the simulator. The recognition I
of saturation condition and use of the saturation curves associated l.
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with simulator operation are e=phasized.
The si=ulator procedures for T.DCA have been revised to include the small 3.
These procedures include the requirement for opgrator break guidelines.
terminating RFI and the, require =ent for reinitiation on loss of 50 F subcooled astgin.
Custo=er procedures are utilized for training and are thus azercised to 4.
improve student / trainee fan 11arity and also determine there correctness for co= batting casualty for which they were written.
e I feel that in light of the potential significance of the reported sequence that it should be reported of events. to possibly cause a TMI-2 like event.
The sequence of events is also applicable to the k*estinghousa to the NRC.
f and Co:bustion Engineering type plants with the sa:e possible ultimate results.
Our s=all breaks guidelines provide the instructions to the operator to adequ-ately handle this casualty / sequence of events. My concern is that in a =ulti-1
,I pie casualties the operations personnel =ay not recognize that a second casualty The second casualty is usually caused by the first casualty /or
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actions to correct the situation. Thus, they cay not take the " appropriate" actions and inappropriate operator action results.
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M N. S. Elliott to C. S. Banvarth Augast 17. 1979 - Page Two 3
Successive Depressurization Event A
Proceduras acd training should not be used as a substitute for designing, building, and installing the equipcent that will keep the plants safe and ini=1:e the possibility of operator error. Designing, building, testing.
and installing equipnent should be profitable busisms.
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