ML19350C525
| ML19350C525 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 02/05/1981 |
| From: | Morisi A BOSTON EDISON CO. |
| To: | Brunner E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML19350C524 | List: |
| References | |
| 81-17, NUDOCS 8104030590 | |
| Download: ML19350C525 (3) | |
Text
,O CODTON ECICON CD*1PANY GENERAL OmCES 800 SOYLETON STREET SQ STO N. M AS SACMuS ETTs 0219 9 A. V. MO RISI MANAGER Fev.tary 5, 1981 NUCLEAR OPERATIONS SUPPORT DEPARTMENT BECo Ltr. #81-17 Mr. Eldon J. Brunner, Chief Reactor Operations and Nuclear Support Branch Office of Inspection and Enforcement Region I U.S. Nuclear Regulatory Comission 631 Park Avenue King of Prussia, PA 19406 License No. DPR-35 Docket No. 50-293 Response to IE Inspection No. 80-29
Dear. Mr. Brunner:
IE Inspection Report No. 80-29, dated January 15, 1981 contained two items of non-compliance. Boston Edison Company's response to those items is presented below.
A.
Infraction Technical Specification 6.13 states in part that "Each High Radiation Area in which the intensity of radiation is greater than 1000 mrem /hr shall be subject to the orovisions of 6.13A above, and in addition, lacked doors shall be provided to prevent unauthorized entry into such areas.
Contrary to the above, on October 16, 1980 the access door, No. 41, to the Condensate Bay, a posted High Radiation Area in which the intensity of radiation was greater than 1000 mrem /hr was unlocked.
Response A 1.
Upon notification the door was pulled closed and locked by Health Physics. The automatic door closer was found to be inadequate and a Maintenance Request was submitted to accom-plish repair of the door closer. The Main-tenance Request was completed.on October 30, 1980.
2.
a.
Other automatic door closers were checked for adequate operability. Maintenance was notified of additional inadequate door 810403 0530-r
- hDOT N E CON
- COMPANY Mr. Eldon J Brunner, Chief February 5,1981 Page Two closers and these were subsequently
- repaired, I
b.
An operability check of the automatic door closers was added to the Extended RWP Audit to ensure periodic functional tests and repair as appropriate.
c.
The contractor personnel who were re-sponsible for ensuring that the Con-denser Deck door was locked when they left the area were given written warn-ings by the Contract Projact Manager.
B.
Infraction Technical Specification 3.1 specified that the trip setting of the Main Steam Line High Radiation moni-tors be:
"f 7 x Normal Full Power Background" Techncial Specification 3.1 further specifies in Table 3.1.1 that "if the minimum number of oper-able instrument channels cannot be met for both trip systems, the appropriate actions listed below shall.be taken."
(for Main Steam Line High Radiation Instruments actions A or C).
a.
Initiate insertion of operable rods, and complete insertion of all operable rods within'four hours.
c.
Reduce turbine load and close main steam isolation valves within.eight hours.
Contrary to the above, on October 14, 1980, the reactor had been operating at power for greater
'tban 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />;without the above actions being taken and with all four flain Steam Line High Radiation trip settings greater than.seven times full power background.
Response B 1.
Following a review of this event, the ORC con-curred that on October 2,1980 a RPS trip
. level setting was adjusted to a non-conser-vative' level. The review concluded-that as
- a result;of a calculation error the. Main Steam Line High Radiation Monitors 1705-2A,B,C,D were set to 7.7' times normal full power background.
e d
s
' Sc;TZN EClCCN COMPANY Mr. Eldon J. Brunner, Chief February 5,1981
' Page Three On October 14, immediately following identifi-cation of this error, the monitors werc re-calibrai.9d.
2.
To preclude a repetition of this event, a revision of procedure number 7.4.14, entitled
" Source Calibration of Main Steam Line High Radiai.kn Monitors" was processed. This change will more clearly delineate the method for calculating set points for these instru-ments.
Full compliance for these items has been attained.
We trust that these responses are satisfactory, if you have any further questions regarding these events, please contact us.
4 Very truly yours, m
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