ML18019A432

Responds to NRC 850911 Ltr Re Violations Noted in Insp Rept 50-400/85-32.Corrective Actions:Motor Heater Circuit Breakers for Charging/Safety Injection Pumps Added to Auxiliary Operators Log for Daily Check

ML18019A432
Person / Time
Site:	Harris
Issue date:	10/11/1985
From:	Joseph Willis CAROLINA POWER & LIGHT CO.
To:	Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
CON-NRC-392 HO-850217(O), HO-850217-(O), NUDOCS 8510310172
Download: ML18019A432 (6)

Text

Carolina Power & Light Company 85ogf f5 PP+ 5 I HARRIS NUCLEAR PROJECT P, 0. Box 165 New Hill, North Carolina 27562 Og 11 1985 File Number'. SHF/10-13510 NRC-392 Letter Number'HO-850217 (0)

Dr. J. Nelson Grace r United States Nuclear Regulatory Commission Region II 101 Marietta Street, Northwest (Suite 2900)

Dear Dr. Grace'.

In reference to your letter of September 11, 1985 and Inspection Report RII: MDH 50-400/85-32, the attached is Carolina Power and Light Company's reply to the violation identified in the inspection report.

It is considered that the corrective action taken/pLanned is satisfactory for resolution of the item.

Thank you for your consideration in this matter.

Yours very truly, J. L. Willis Plant GeneraL Manager Shearon Harris Nuclear Power Plant DLT/jsb Attachment cc: Messrs. B. C.'uckley (NRC)

G. Maxwell (NRC-SHNPP)

Ssi03~0i7a SSXOii PDR ADOCK 05000400 ~~1' PDR

4 b

Dr. J. Nelson Grace Page 2 00'1 1985 Attachment to CP&L Letter of Response to NRC Report RII: MDH 50-400/85-32-01 Re orted Violation.'0 CFR 50.54(a)(l) requires the'licensee to implement the quality assurance program de'scribed or referenced in its Safety Analysis Report. Section 17.2.14 states that measures are established for indicating the operating status of structures, systems and components.

Contrary to the above, the heaters for charging/safety injection pump 1B motor were found deenergized but the heater disconnect switch was not t'agged and the heaters for charging/safety injecting pump 1C motor were found inoperative but not identified as such.

This is a Severity Level V vioLation (Supplement II).

Denial or Admission and Reason for the Violation:

The violation is correct as stated. The Quality Assurance requirements referenced in the violation require that the subject electric motors be stored in a condition that does not degrade the motors. While the motors were located in the plant, but not operational the long-term storage requirements for these motors were satisfied, in part, with the installation of temporary heaters or temporary power to the heaters installed within the motors. These heaters provided assurance that moisture would not condense within the motors. These temporary controls were checked on a daiLy basis and were supplemented with semiannual checks on the motor. These activities were governed by procedures WP-106, "Maintenance/Protection of Permanent Plant Equipment" and PM-E-0025, "Electrical Preventive Maintenance for 6.9 KV Motors".

Temporary heaters or temporary power to permanent heaters were removed from the motors when the permanent power was wired to a motor and pre-operationaL checkouts and testing began on the motor. At this point control of the motors shifted to the Start-up Unit with the applicable Start-up Engineers responsible for directing the operation and testing of the motor including any other appLicable surveillances for the motor. Since the permanent environmental controls in the power bLock were not operational, steps should have been taken to assure that the permanent heaters were in operation whenever practicable. This was not done on a systematic basis and led to the condition noted in the violation.

Corrective Ste s Taken and Results Achieved The motor heater circuit breakers for the Charging/Safety Injection Pumps as well as heaters for other safety related motors as described below have been added to the Auxiliary Operators Log and are being checked daily.

II 0

I ~ ~q <<% ' ~ t

Dr. J. Nelson Grace Page 3 0g 11 1985 Corrective Ste s Taken to Avoid Further Noncom liance'.

The following steps have been taken to prevent recurrence:

1. A Review was performed on turned over RFT's as of September 1, 1985 and a list of motor heaters with permanent plant power connected w'as provided to Operations personneL. Motor heater circuit breakers Eor 6.9 KV and 480V AC safety related motors were identified and added to the Auxiliary Operators Log and are being checked daily.

2. A training cLass was held on August 21, 1985 Eor Start-Up personnel stressing the importance of minimizing the time period motor heaters are de-energized (the period oE time when .temporary power is disconnected and permanent power is connected) and the need .to provide to Operations personnel a list of breakers that supply permanent power to motor heaters as they are turned over Erom Construction.

3. Start-Up Manual, Volume I is being revised to reflect the Start-Up engineers responsibility to coordinate the connection of the permanent power source to the heaters, energize and test the power source, minimize the time period that the heater is de-energized during this transition and to notify the Shift Foreman that heaters are in service.

Several additional points should be noted. First, interruptions in the heater power are inevitable because construction, testing or preventative maintenance activities may require that a power supply or bus be deenergized; however, it is anticipated that such outages will not be prolonged. Second, checks of the power supply breakers do not provide assurance against the burnout of a heater, heater continuity will be checked as described above on a semiannual basis during pre-operationaL testing and on a reduced frequency following fueL load. Third, the corrective actions stated above are only required until HVAC is declared operationaL by the Manager of Operations and motors are evaluated to determine that heaters are not essential for ensuring the motors are free of condensation.

Date When Full Com Liance Will Be Achieved:

Full compliance is pending the revision of Start-Up Manual, Volume I to incorporate the responsibilities of the Start-Up Engineer in regards to motor heaters. It is currently projected that full compliance will be achieved by October 15, 1985.

4' 0