ML18153D296
| ML18153D296 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 04/12/1993 |
| From: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 92-436A, 92-583A, IEB-92-001, IEB-92-1, NUDOCS 9304190061 | |
| Download: ML18153D296 (6) | |
Text
e VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 April 12, 1993 United States Nuclear Regulatory Commission Attention: Document Control Desk Washington, D. C. 20555 Gentlemen:
VIRGINIA ELECTRIC AND POWER COMPANY SURRY POWER STATION UNITS 1 AND 2 ADDITIONAL INFORMATION IN RESPONSE TO NRC BULLETIN 92-01 AND SUPPLEMENT 1 Serial No.
92-436A/
92-583A NL&P/CGL RO Docket Nos.
50-280 50-281 License Nos. DPR-32 DPR-37 FAILURE OF THERMO-LAG 330 FIRE BARRIER SYSTEMS In response to NRC Bulletin 92-01 and Supplement 1, Virginia Electric and Power Company identified the locations and descriptions of Thermo-Lag 330 applications at North Anna and Surry Power Stations in letters dated July 29, 1992 (Serial No.92-436) and September 30, 1992 (Serial No.92-583). Subsequent to transmittal of those letters, an additional application of Thermo-Lag 330 was located at Surry.
This application is on ventilation ducts that penetrate the roofs of battery rooms located within the Units 1 and 2 emergency switchgear rooms.
The list of Surry Thermo-Lag applications, which was included in our previous transmittals, has been revised to include this additional application and is attached.
The addition is identified by a revision bar in the right margin.
Very truly yours, J~
W. L. Stewart Senior Vice President - Nuclear Attachment - Thermo-Lag 330 Fire Barrier Material - Surry Power Station 160012
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. PDR PDR G
cc:
U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, N. W.
Suite 2900 Atlanta, Georgia 30323 Mr. M. W. Branch NRC Senior Resident Inspector Surry Power Station Mr. R. E. Bradley Nuclear Management and Resources Council Suite 300 1776 Eye Street NW Washington, DC 20006
COMMONWEAL TH OF VIRGINIA )
)
COUNTY OF HENRICO
)
The foregoing document was acknowledged before me, in and for the County and Commonwealth aforesaid, today by W. L. Stewart who is Senior Vice President -
Nuclear, of Virginia Electric and Power Company. He is duly authorized to execute and file the foregoing document in behalf of that Company, and the statements in the document are true to the best of his knowledge and belief.
Acknowledged before me this /Z'JJI day of l Ap11~ P
, 19 93.
My Commission Expires: t J//bff 3 !
, 19'i!I:_.
II/a; 'b- /Ju;,<L, Notary Public (SEAL)
e ATTACHMENT THERMO-LAG 330 FIRE BARRIER MATERIAL SURRY POWER STATION Thermo-Lag installations addressed by NRC Bulletin 92-01 and Supplement 1 to Bulletin 92-01
- 1.
- 2.
- 3.
- 4.
- 5.
- 6.
- 7.
LOCATION Unit 1 Cable Vault, communication system conduit 1 M912 (1 ") &
1 COM3 (3/4") from elev. 27'-6" of Auxiliary Building to Unit 1 Emergency Switchgear Room.
Unit 1 Emergency Switchgear Room, communication system conduits 1SVB151, 1SVB151A, &
1M912 all (1"); 1COM12 & 1COM3 both (3/4"); 1 COM11 (2").
Turbine Building Basement Units 1
& 2, HVAC duct between fire dampers 9 & 1 O and the Emergency Switchgear Room.
Turbine Building Mezzanine Units 1
& 2, HVAC duct between fire dampers 19 & 20 and the Control Room.
Mechanical Equipment Room #3, Charging Pump Service Water Pump supply piping.
Unit 1 Emergency Switchgear Room, HVAC duct between fire dampers 1 & 11 and Battery Room 1 A, dampers 2 & 12 and Battery Room 18.
Unit 2 Emergency Switchgear Room, HVAC duct between fire dampers 3 & 13 and Battery Room 2A.
DESCRIPTION Fire barrier, 1" thick preformed sections attached to conduits for entire routing through Cable Vault.
Fire barrier, 1" thick preformed sections attached to conduits.
Fire barrier, 1" thick panels attached to 4 sides of the ducts.
Fire barrier, 1" thick panels attached to 4 sides of the ducts.
Fire barrier, 1" thick panel sections protecting piping that enters MER 3 and runs to the CPSW pump room.
Fire barrier, 1" thick panels attached to 4 sides of the ducts.
Fire barrier, 1" thick panels attached to 4 sides of the ducts.
ATTACHMENT (continued)
Thermo-lag installations not addressed by Bulletin 92-01 or Supplement 1
- 8.
- 9.
- 10.
- 11.
- 12.
- 13.
- 14.
- 15.
LOCATION Containment Units 1 & 2, RHR pump motors 1-RH-P-1A & 1 BAND 2-RH -
P-1 A & 1 B, elev.
(-)13'-0".
Containment Unit 1, transmitters LT -
1459A & LT-1461, elev. 18'-4",
column 10.
Containment Unit 1, transmitter PT -
1449, elev. (-)3'-6", column 9.
Containment Unit 2, transmitter LT -
2459A, elev. 18'-4", column 5.
Containment Unit 2, transmitter LT -
2487A, elev. (-)22'-6", column 9.
Containments Unit 1 & 2, Appendix R cable penetration to Cable Vault.
Containment Unit 1, conduit (3/4")
from transmitters L T-1459A & PT -
1449.
Containment Unit 2, conduit (3/4")
from transmitters L T-2459A & LT -
2487A.
DESCRIPTION Radiant energy shield, 1 /2" thick panels mounted to steel frame to form shield between pump motors.
Radiant energy shield, 1 /2" thick panels mounted to steel frame to form shield between transmitters.
Radiant energy shield, 1 /2" thick panels mounted to steel frame to form enclosure around transmitter.
Radiant energy shield, 1 /2" thick panels mounted to steel frame to form enclosure around transmitter.
Radiant energy shield, 1 /2" thick panels mounted to steel frame to form enclosure around transmitter.
Radiant energy shield, 1 /2" thick panels mounted to steel frame to form 4 sided box around penetration.
Radiant energy shield, 1 /2" thick preformed sections attached to conduit.
Radiant energy shield, 1 /2" thick preformed sections attached to conduit.
I I
e a...,,
ITEM
- 16.
Notes:
LOCATION ATTACHMENT (continued)
DESCRIPTION Cable Vault Units 1 & 2, Appendix R communication cable containment penetration 4C & 30.
Radiant energy shield, 1" thick panels mounted to steel frame to form 4 sided box around penetration.
- 1.
Radiant Energy Shields are credited as having 1 /2 hour fire rating.
- 2.
Fire Barriers are credited as having 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> fire ratings with the exception of Items 2 and 5, which are credited as having 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> fire ratings. Refer to Engineering Evaluations 22 and 23, transmitted by letter Serial No.92-834.
- 3.
Item 16 was provided as an enhancement to the system and is not intended to satisfy any Appendix R commitment. Refer to Engineering Evaluation 23, transmitted by letter Serial No.92-834.