ML19350F109
| ML19350F109 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 04/29/1981 |
| From: | Daltroff S PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML19350F107 | List: |
| References | |
| NUDOCS 8106240222 | |
| Download: ML19350F109 (3) | |
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PHILADELPHIA ELECTRIC COMPANY 2301 MARKET STREET P.O. BOX 8699 1881 -1981 PHILADELPHIA. PA.19101 (2151 e415001 s m i.ost oai.rno n woes Pesasossiv April 29, 1981 Mr. Boyce H. Grier, Director Region I Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission 631 Park Avenue Ki, of Prussia, PA 19406
Dear Mr. Grier :
This refers to your letter of April 16, 1981, concerning the establishment of controls regarding safety significant instrument valves.
The items of concern are restated below, in part, followed by our responses.
1.
Expeditious conduct of a Unit 2 valve lineup check for all safety system ac?uation instruments, to include all instrument root valves.
Valves located in radiation areas of one Roentgen per hour or greater will be checked during the l
next unit shu tdo wn.
The Plant Operations Review Committee will review this effort for adequacy.
Response
A valve liile-up check of instrument rack valving for all instruments required for safety system actuation was completed on
\\pril 9, 1981.
This instrument rack check was independently verified.
The line-up check for the instrument root valves is 95% complete at this time.
This check will be completed prior to the startup from the current mainte-ance outage.
The required Plant Operating Review Committee revie-of this information will also be completed prior to the startup.
810 6 24 0 MQr.
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Mr. Boyca H. Gricr Page 2 i
2.
Development and approval of detailed Unit 2 and Unit 3 valve lineup checklists which provide for independent verification 13f proper lineup of the above instruments.
Response
The 'nitial scope of valves and instruments which provide safety
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system actuation has been defined for Unit 2.
This information i
i will be developed into an approved valve line-up check. list, l
l requiring independent verification, for Unit 2 prior to August 1,
l 1981.
This work will be completed for Unit 3 prior to startup l
from the current refueling outage.
'3 conduct of a lineup using the approved. checklists on Unit 2 as soon as practicable and on Unit 3 prior to Star 'up from the current. refueling outage.
i Resconse l
The Unit 2 checklists will be conducted as soon as practicable after the approval of the checklist.
The Unit 3 checklists will be completed prior to the startup from the current refueling i
L outage.
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Es tablishm ent, on a schedule consistent with the operational workload on technical staff, of a program to develop and approve complete valve lineup checklists for instruments I
which are necessary for proper ' operation of safety-l significant equipment or for operator knowledge of equipment status under accident conditions.
The instruments involved include those which measure, transmit, or indicate level, I
pressure, or flow in the following systems.....
For instruments not required for automatic actuation of l
safety systems and not required to undergo valve lineup to assure compliance with the technical specifications, if regular checks can and do verify instrument loop performance,
the instruments involved need not be included in the valve lineups prescribed in this item.
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Mr. Boyca H. Grisr Page 3-
Response
An -evaluation is currently underway to identify and classify the listed instruments and - systems.
This evaluation will consider automatic safety system actuation, technical specification compliance, time response requirements, means of information display', and present or proposed regular checks of instruments.
Procedures and checklists will be revised or written, as necessary, and approved by November 30, 1981, in order to perform the regular instrument and valve lineup check list.
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Very truly yours,
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