ML19309B581
| ML19309B581 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 03/31/1980 |
| From: | Hoffman D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | Ziemann D Office of Nuclear Reactor Regulation |
| References | |
| TASK-03-12, TASK-3-12, TASK-RR NUDOCS 8004040327 | |
| Download: ML19309B581 (8) | |
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$ Consumers S Power N Company 1 ~s
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,: ; '/ ut General Offices' 212 West Michigan Avenue. Jackson, Michigan 49201 e Area Code 517 78H-05SO March 31, 1980 Director, Nuclear Reactor Regulation Att Mr Dennis L Ziemann, Chief Operating Reactors Branch No 2 US Nuclear Regulatory Commission Washington, DC 20555 DOCKET 50-155 - LICENSE DPR BIG ROCK POINT PLANT - CONSUMERS POWER COMPANY
.60-DAY RESPONSE TO NRC LETTER DATED JANUARY 1, 1980: ANCHORAGE AND SUPPORT OF SAFETY-RELATED ELECTRICAL EQUIPMENT NRC letter of January 1, 1980 noted that certain safety-related electrical equipment may be inadequately anchored to resist seismically induced motion and requested that an' action plan be developed and submitted for resolution of the issue. This action plan was submitted by Consumers Power Company letter dated February 13, 1980.
This letter provides the necessary 60-day response (attached) required by the above STC letter, namely:
1.
Whether or not positive anchorage exists for the electrical equipment;
- and, 2.
A description of actions considered necessary to correct deficient anchorages.
It is important to note that the corrective action given is general in nature and that additional engineering will be required to address installation problems prior to fixing the restraint design. Consumers Power Company anticipates resolving the overall issue as well as completing any required 8 004 ogg3p
2 action by the end of the next refueling outage scheduled to start on October 24, 1960.
David P Hoffman (Signed)
David P Hoffman Nuclear Licensing Administrator CC JGKeppler, USNRC Attachment, 6 Pages oc0380-0543a-48 e
.e 1
EQUIP:ENT POSITIVE JUDGED IDENTIFICATION ANCHORAGE ADEQUATE CATEGORY I CORRECTIVE ACTION /C0tCENTS 1.
Emergency Diesel Yes Yes Yes None.
Generator (EDG)
Local Control Panel, C-18 2.
Emergency Diesel Yes, vertical No No Lateral' motions could cause the heater Generator Room direction only to come loose from vertical support Heater and fall on the EDG Control Panel C-18.
To correct this problem, bracing to prevent lateral motion is needed.
3 EDG Room Yes Yes No Li ht was considered since it is S
Energency Light located above the EDG Batteries.
- 4.
EDG Batteries Yes No Yes Bolts are corroded and need to be replaced.
5 EDG Sattery Yes Yes Yes None.
Charger 6.
Emergency Diesel Yes Yes Yes None.
Generator (EDG) 7 EDG l.:uffler Yes Yes Yes None.
+
8.
EDG Cooling Water Yes Yes Yes None.
Head Tank 9
Diesel Fire Pump No No Yes Battery racks are not secured to floor.
Batteries Racks should be secured to floor to prevent sliding.
~ _.
s 2
EQUIPENT POSITIVE JUDGED IDENTIFICATION ANCHORAGE ADEQUATE CATMORY I CCERECTIVE ACTION /C0teTNTS-10.
2 Ton Crane Yes Yes No Crane was considered since it runs above Category I equipment in screen
- house, 11.
MCC 1C No No Yes Should install bracing to prevent MCC 2C overturning in south direction. The wall in back of the MCC's prevent overturning in north direction.
12.
Diesel Fire No No Yes Panel should be secured to the con-Put:rp Control crete wall at its rear.
Panel 13 Electric Fire Yes Yes Yes None.
Pump Control Panel C-17
- 14..Hypochlorite No No No This tank was considered due to its Tank - Screen proximity to Category I equipeent in House the screen house tank rests in a cradle supported on a steel fra:e work. Tank should be secured to cradle to assure positive anchorage in the north-south direction.
15 Cable Trays -
Yes Yes Yes KOTE: One vertical support not Electrical attached at bottom. Should Penetration Room secure by bolting or welding to steel deck.
- 16. ' Junction Boxes Yes Yes Yes None.
JB-19, JB-20, JB-21, JB-108 t
5
-l EQUIP:GIir POSITIVE JUDGED IDEIITIFICATION ANCHORAGE ADEOUATE CATEGORY I CORRECTIVE ACTION /CCy!ENTS 17 Metal Shipping No No No Container was censidered due to its
.Centainer in proximity to JB-19, JB-20, JB-21, Electrical Pene-JB-lCB. Should remove or restrain tration Room container in the Penetration Foom.
Container is restrained by friction only.
- 18. RDSActuation/
Yes Yes Yes None.
Sensor Panels 19 computer No No No Computer was considered due to its proximity to the RDS actuation /
sensor panels. Should restrain lateral movement of cocputer.
- 20.. Station Battery No No Yes Battery racks are anchored; however, the battery cells sit on the racks and are restrained by friction only.
Restraints to prevent the battery cells from lateral movecent should be in-stalled.
21.
Station Pattery Yes, bolted Yes Yes None.
Chargers to floor.
22.
125 VDC D_ tri-Yes, bolted Yes Yes None.
bution Panel DC2 d
23 Rod Position MG Yes, bolted Yes Yes None.
Control Panel
- 24. 125 VDC Panel Yes Yes Yes ihne.
DlO
k-EQUIE CIT POSITIVE JUDGED IDEr.'TIFICATION AUCEORAGE ADEQUATE CATEGORY I CORRECTIVE ACTION /COnTNTS
-25 125 VDC MCC No No Yes The MCC should be secured to the Bas-D01 floor front and back to prevent.over-turning. Panel currently is free standing.
- 26. Junction Boxes Yes Yes Yes None.
J5-42, JB-43, JB-44 27 MCC 1A No No Yes See Item 25
- 30. MCC 2A No No Yes See Item 25
- 31. 480v Load No Yes Yes None.
Center, Das 1,2
- 32. Instrument AC Yes Yes Yes None.
Power Transfer Switch 1A-2B 33 I&C Tr: 1sformers Yes Yes Yes Nene.
l A, 2B
- 34.. Panel.3Y Yes Yes Yes None.
35 Panel lY Yes Yes Yes None.
- 36. Air Compressor Yes No Yes The bracings that the control panels Control Panels are mounted to should be strengthened or replaced with more rigid member.
5 EC.UIFF.5UT POSITIVE JUDGED IDENTIFICATION ALCHORAGE ADECUATE CATEGORY I
' COP 2ECTIVE ACTION /CO:OLYrS 37 Panel C-30 Yes Yes Yes None.
to ECCS equipment located on the steam drum enclosure wall.
39 Panel C-20 No No No Panel should have bracings at bottom securing panel to floor in order to prevent sliding and/or overturning.
The panel was considered due to its proximity to ECCS instrumentation on steam drum enclosure wall.
40.
Panel 2Y Y'es Yes Yes None.
41.
Panel 2P Yes No Yes dditional bra'cing should be installed to increase rigidity to prevent east-west motion.
42.
Personnel Lock Yes Ys No Considered due to its proximity to e
Controls - Inside panel 2P.
Containment 43 Dr.crgency Light-Yes Yes Yes None.-
ing Auto Transfer Panel
- 44. Panel C-26 Yes Yes Yes None.
45 Stack Gas Yes Yes Yes None.
Sample Monitor Panel
- 46. Air Ejector Off-Yes Yes Yes None.
gas Discharge Panel
e 6^
4 EC.UIEG!Tr POSITIVE JUDGED IDE:.TIFICATION ANCHORAGE ADECUATE CATEGORY I CORRECTIVE ACTION /C050ELTS 47 UPS A, B, C, Yes
-Yes Yes None.
D Battery Charger / Inverter
- 48. 'UPS A, B, C, Yes Yes Yes None.
.D Batteries /
Racks The lights,ere. considered due'to the 49 UPS Room Over-Yes Yes No w
fact they are located above the UPS head Lights batte.7 racks.
- 50. Junction Box Yes
-Yes Yes None.
JB-97
- 51. Poison System Yes Yes Yes None.
Fuse t~.onitor
. Panel C-34
- 52. !&in Control Yes Yes Yes None.
Panels C-Ol, C-02, C-40
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