ML19248C832
| ML19248C832 | |
| Person / Time | |
|---|---|
| Issue date: | 05/30/1979 |
| From: | Tondi D Office of Nuclear Reactor Regulation |
| To: | Stello V Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7907050368 | |
| Download: ML19248C832 (4) | |
Text
ntC POR a nsco 4
A, UNITED STATES y ) '3g(a Eg NUCLEAR REGULATORY COMMISSION
- g\\f-WASHINGTON, D. C. 20555 MAY 3 0 B79 i
i NOTE T0:
V. Stello, Director, Division of Operating Reactors THRU:
G, Lainas C ef, Plant Systems Branch, Division of j
Operating Reactors t
FROM:
D. Tondi, Section Leader, Plant Systems Branch, Division
{
of Operating Reactors
SUBJECT:
TECHNICAL ASSISTANCE PROGRAM - REQUEST FOR ADDITIONAL l
FUNDING i
The following is in response to T. Telford's request to identify additional potential tasks related to current operating reactor concerns that are suitable for incorporation into current D0R technical assistance activi ties. The tasks identified in the enclosure are considered i
important to operating reactors nd are reconmended for consideration by the Plant Systems Branch, Section "A" (P. Shemanski is the technical contact).
The total estimatad manpower for the 6 identified tasks is 5.0 man-years or $400K, I recommend we meet with those involved to e
discuss this matter further.
~
1 D. Tor.di, Section Leader Plant Systems Branch Division of Operating Reactors
Contact:
P, Shemanski, X28077
Enclosure:
As stated cc w/ enclosure:
D. Eisenhut R. Vollmer G. Lainas T. Teldord V. Panciera PSB Section A
- n' P 7907050368 3g y
281 172
i f
ENCLOSURE r
i TASK 1 Environmental Qualification of Electrical Eauipment SCOPE l
IE Bulletin 79-01 requires all the licensees of operating reactors to l
review the environmental qualification of electrical equipment and identify the type of qualification method used (e.g. test, analysis, combination).
l The licensee's responses are due by June 15, 1979.
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The contractors task will be asked to assist the NRC staff in developing
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guidelines to be used in evaluating the licensee's responses and to perform the technical evaluations of qualification and analysis f
documentation using the guidelines developed.
j.
Lead Engineer:
E. Butcher i
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TASK II L
Post Accident / Incident Monitoring (Proposed NE.w Work - No TAC)
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SCOPE To enable the nuclear power plc.nt operator to correctly diagnose the i
plant status following an accident or incident.
Pertinent informatinn from various systems should be presented to the operator.
The contractor i
is to undertake a study of operating plantsto identify the plant monitors i
that are e/ailable that can be used for imparting the necessary infor-E maticn to the operator. Where sufficient information is lacking, the study should point out the necessary revisions or alternate means of obtaining the required information. Licensing actions resulting from this task will be in the form of modifications to existing PAM instrumentation.
Lead Engineer: ri. Chiramai
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TASK III Electrical E,ypass of Safety Actuation Signals to Containment Purge Valves --
Abnormal Occurrence Follovuo Action Item -
SCOPE
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This abnormal occurrence involves the inadvertent blocking of the automatic safety injection actuation signal from closing containment purge isolation valves during a postulated LOCA.
This blocking was caused by design deficiencies of manual override circuitry, which was operated during a "high" radiation condition inside containment.
The scope of the task for the contractor is to provide technical assistance for the review of ESF actuation signal circuits which have manual override (bypass) capability.
The acceptance criteria are given in IEE.E 279 and in the DOR generic letter to all licensees dated November 28, 1978. Written technical evaluations for each subtask as defined by NRC.
This task involves the 0
?b licensing action review of over 50 operating reactors. This effort must be started in FY 1979, with ccmpletion in early FY 1980.
Several plant visits by NRC and contractor personnel are planned.
Lead Engineer:
J. T. Beard TASK IV BWR Reactor Protection System Power Supplies (New Work Under TAC 7768)
SCOPE The reactor protection system must be protected from being exposed to electric power that is of such poor quality that system-level failure of the RPS could occur.
The scope of the task for the contractor is to assist the staff and provide technical assistance for the review of licensee-proposed modifications. Written evaluations are required.
This effort involves license actions regarding GDC-2 and GDC-21 on all BWR plants.
Lead Engineer:
J. T. Beard TASK V End-of-Cycle Recirculation Pump Trip Circuitry (New Work Under TAC 11664)
SCOPE BWR licenseeshave reauested safety credit for a recirculation pump trip (RPT) feature needed 'to recover a loss of thermal margin (and operating power level) which occurs at the end of fuel cycles.
Due to certain turbine-generator transients a core-wide pressurization event can at end-of-cycle add positive reactivity to the reactor system at a rate faster than the control rods can insert negative scram reactivity. As an essential supplement to the scran system, the RPT feature provides the additional negative reactivity. The scope of the task for the contractor is to assist the staff and to provide technical assistance in the review of proposed RPT circuit designs against the criteria of IEEE 279. Wri tten technical evaluations are required and involve licensing actions for all BWR's.
Lead Engineer:
J. T. Beard TASK VI Plant - Operator Interface (Proposed New Work - No TAC)
SCOPE During and following an accident or incident at a nuclear power plant, 2H1 il
i an avalanche of information is imparted to be operated by the various means available at the main control room (annunciators, monitors, recorders, i ndi cators, etc. ). The contractor is to undertake a study to determine the sets of alarms controls, recorders, indicators, ete-on which the operators are to concentrate following various possible plant accidents /ircidents to enable the operators to diagnose the situation and to correctly predict the effects of possible actions.
Plant visits by NRC and contractor personnel are planned.
Lead Engineer:
M. Chiramal 20!
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