ML20206G472
| ML20206G472 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 11/04/1988 |
| From: | NRC OFFICE OF SPECIAL PROJECTS |
| To: | |
| Shared Package | |
| ML20206G037 | List:
|
| References | |
| NUDOCS 8811220292 | |
| Download: ML20206G472 (2) | |
Text
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'e, UNITED STATES
$c
. y s-NUCLEAR REGULATORY COMMISSION 5
WASHINGTON D.C.20$55 4......e 5
EAFETY EVALUATION REPORT BY THE OFFICE OF SPECIAL PROJECTS EMPLOYEE CONCERN ELEMENT REPORT 22912_
"PANEL-TO-EOUIPMENT DISTAPCES" TENNESSEE VALLEY AUTHORITY SECUOYAH NUCLEAP POWER PLANT, UNITS 1 AND 2 00CKET NOS. 50-327 AND 50-328 1.0 SUBJECT Categcry:
Engineering (20,000)
Instrumentation and Control Design (22900)
Subcategory:
Elerent:
Panel to Ecuipment Distances (22912)
Employee Concern:
IN-85-068-h06 Element Feport 22912, Pevisien 3 dated December 19, 1966, involves an employee concern statirg. "A lot of instrument panels are located far away from the equipment they control."
2.0
SUMMARY
OF ISSUE The concern is a Watts Bar concern but is considered generic to Seouoyah because of the sinilarity of the two plants and the general nature of concern.
The issue is the distance between the instrument panels and the actual ecul pre nt.
Post ecuipment are located in several buildings such as the containment building, auxiliary buildings and the turbine building, but the controls are lccated in the control room.
3.0 EVALUATION NRC and its consultant, SAIC, reviewed the employee concern.
It is a NRC recuirement to have a rain control room which affords safe habitability functions for control roer cperators Therefore, controls riust be located in NRC recuires the cortrol room which is of ten f ar i /n the actual ecuipment.
that instrument response tires mus! !'tude the effect of distarces from sensors, controls, etc. Where respe' time is critical, deficiencies are cetected and corrected during the test:ng conducted per NPC Regulatory Guide
- 1. 2.
NRC recuires huran factors engineering reviews for all plants in order te assure that ere ete* e'fectiseress is appropriate.
TVA additicrally points r.c ire stry stardares or regulatory recuirerents which cut trat there art spEcify distartes fror. Controls to ecuiprent.
031122O292 591104 PDR ADOCK 05000327 P
PDC I
2 accessible rs.ceway areas es called for en the design drawiner.
In the ccurse of the NSFS investigations, it w s discovered ': hat non-stainless steel floor driir. grates had baan used where the design drawirer, had specified steinless steel. The hSRS invertigatien report recorrerded replacing the ncrconforning grates with rtt.inless steel grater, erd the SQN plant staff ecmitted te install rtrinless grates as requites by thr. drawings.
!Y.,Cerclusiens The NFC staff be.t ss bat the TVA investigetion of the employee ccreerns was adee,t,tte, and thedr re.11utien of the cercorns as described in Elcr.er.t Report 232.T(P) Fevision 0,
- acceptable.
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