ML20235H123
| ML20235H123 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 11/21/1986 |
| From: | NIAGARA MOHAWK POWER CORP. |
| To: | Linville J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20235G041 | List: |
| References | |
| FOIA-87-438 NUDOCS 8709300382 | |
| Download: ML20235H123 (3) | |
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November 21, 1986 TO:
Jim Linville, Chief, Section 2C, DRP FROM:
NMP Resident Office WEEKLY STATUS REPORT - NINE MILE POINT 2 1.
Plant Status:
NMP-2 completed fuel loading on November 15 at 10:30 a.m..
As of 9:30 a.m. on November 20, NMP-2 bad completed functional testing of all CRDs and has friction tested 110 of the 185 CRDs. The CRD testing was interrupted twice to resolve secondary containment integrity is' sues concerning seismic qualification of air lock..-
doors and fire seals on imbedded conduits through Reactor Building fire walls.
In addition to the routine resident inspector coverage, Glenn Meyer, Jim Kaucher, and Michelle Evans inspected onsite this week, including da: and backshift coverage of CRD testing.
2.
MSIV Status:
7 NMP-2 completed repairs on MSIV 6D and installed a ball (S/N 4) on November 15. 'This was the first of the remaining four valv,es to be reassembled. However, it failed.the leak' rate test (11 scfh vs acceptance criteria of 6 scfh). Next, NMP-2 performed a an unofficial, nonconservative test (without the piping downstream of the valve vented), and a leak rate of 7 scfh resulted.
The valve was disassembled and the ball inspected.
Despite the limited number of cycles on the valve, smnaring of the stellite seat material and scratching of the tungsten carbide coating had occurred on the upper and lower sections of the coating. This ball is presently at Crosby undergoing evaluation.
NMP-2 installed another ball (S/N 15) into the 6D body and informationally leak tested it on November 19.
It failed the test, but after disassembly NMP-2 found no deterioration of the ball and concluded that a packing leak caused the test failure.
The schedule for criticality seems to depend on MSIV completion.
On November 20, NRR approved an NMP-2 request to allow them to remove the actuators from the presently installed valves (6A, 6B, 6C, and 7D) to permit actuator modifications.
NMP-2 feels this will save approximately one week in the critical path. The last of the three remaining balls should be onsite November 23 or 26, depending if ball S/N 4 requires recoating.
All work on MSIVs could finish by December 8 to 13.
With the 10 day NRC review period imposed by the license, this MS1V schedule would permit Fo t a -F7 4/3 g 87093003G2 070924 hTE
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criticality between December 18 and 23, although this is optimistic.
3.-
violation of Technical Specifications:
On November 17, NMP-2 concluded that numerous conduits for lighting, page systems, and utility power outlets zmbedded within fire valls had not been fire sealed within the conduit. At 3 p.m., NMP-2 ceased the CRD testing in~ progress based on concerns about secondary containment integrity and instituted fire patrols. By noon the next day, NMP-2 had determined that none of the secondary containment boundary walls were affected, and the CRD testing was resumed. NMP-2 Site Engineering had found the violation during review of the work package to seal the conduits.
The inspectors observed a sample of the 400 to 500 junction boxes requiring seals and concluded that the violation was of minor technical significance based on the small diameter of the conduit, the length of conduit runs (typically 10 to 40 feet),
and the multiple cover plates on the conduit ends.
4.
Reportable Events:
None.
5.
Equipment Problems:
NMP-2 ceased CRD testing from Wednesday evening to Thursday q
mbrning.due to documentation problems on the Reactor Building air l
lock doors and the resulting concerns on secondary containment integrity. Although the design drawings showed the doors to be Seismic Category II, the results of the testing performed to demonstrate upgrading to Seismic Category I were available, but the upgraded category had not been reflected on the drawings.
l NMP-2 inspected 12 doors of the 22 doors affected to verify
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correct installation.
6.
Planned Activities:
CRD friction testing is estimated ~to be completed early Friday morning, and then CRD scram time testing will begin. Once the scram testing is completed, NMP-2 will reassemble the vessel l
head.
In parallel, MS1V reassembly and testing will continue.
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Cumulative Summary of Significant Events 10/31 - License issued 11/2 - Fuel loading begun 11/5 - IRM reactor trip followed by SDV level reactor trip (ENS) 11/6 - Vital area breached without compensatory measures (ENS) 11/7 - Fuel loading with bypassed SRM (LCO violation) 11/8 - Inoperable RB exhaust rad monitor (LCO violation) 11/9 - Two APRM reactor trips due to faulty circuit card (ENS) 11/10 - Inoperable RB exhaust rad monitor (ENS) 11/15 - Fuel loading completed 11/17 - Imbedded conduits without fire seals (LCO violation) cc:
T. Murley J. Allan W. Kane S. Collins S. Ebeneter T. Martin P. Eselgroth W. Cook G. Meyer R. Bernero, NRR M. Haughey, NRR