ML20010C608
| ML20010C608 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 08/17/1981 |
| From: | TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML20010C607 | List: |
| References | |
| NUDOCS 8108200235 | |
| Download: ML20010C608 (3) | |
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ENCLOSURE
- TVA BFNP TS 156 SUPPLEMENTAL INFORMATION-
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BROWNS FERRY NUCLEAR PLANT (DGCKET NOS.- 50-259,--260) i I
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C Table 4.9.A.4.c VOLTAGE RELAY SETPOINTS/ DIESEL GENERATOR START N.*
Relay Location' Trip Level Settinc
' Remarks 1 T.3 cl.
'4-kVLShutdodr. Boards Trip Setpoint:
0 volts with a 1.5'-second time
- start, diesel' genera-
. delay torr on loss.of off.
..l Allowabic Values:
+.1 second site' power.
1.41 o 1.6 seconds fg Trip Range:
t Reset'Setpoint:
2870-V Allowable Values:
+ 2% of 2870-V Reset Range:
2813-V to 2927-V Undervoltanc
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- 2.
'4-kV Shutdown Boards Trip Sctpoint.:
3920 Eccond lhvel under-
j$1 voltage censing're-U Allowabic Values:
3900-3940 Inys - at.1rt. diesel f
[g generatnr on degrad-gr Reset Sctpoint:
Reset at <
- " I8**
5% above trip value
-t Sctpoint Critical Time Timer
(_ seconds)
(seconds)
'3.
4-kV Shutdown Boards 2-211-1A O.27 + 5%
0.3 Auxiliary timero for' (Timers shown.for' 4-kV shutdown board 2-211-2A 4.00 + 5%
N/A second Icvel under-voltage sensing A
4-1.V. shu tdown 2-211-3A 7.43 + 5%
8.2
'rclays.
boards B, C, and D, 2-211-4A 1.36 + 5%
' 1. 5 The setpufnt ranges
.cimiliar, except for change of suffix) specified assure'that the operating times "ill be below the-critical times speci-fled.
These ranges.
are based on timer repeatability.of'+ 5%
as specified by the manufacturer.
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r Table 4.9.A.4.c VOLTAGE RELAY SETPOINTS/ DIESEL CENERATOR START
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Eclav Location
_ Trip Level Settine' Remarks 1.
1.
4-kV.<butdodn Boards Trip Sctpoint:
0 volts with a 1.5-second time Start'dicscl. genera -
.. delay tors on loss of off-
-f Allowabic Values:
+.1 second site' power.
Trip Range:
1.'4 to '. 6 seconds Reset Setpoint:
2870-V A1]ovabic Values:
+ 2% of 2870-V Reset Range:
2813-v to 2927-V Und ervol t anc 2.
4-kV Shutdown Boards Trip Sctpoint:
3920 Second level under-voltage sensing re-Allowabic values:
3900-3940 lays - start diesel generator on degrad-
- f[
Reset Setpoint:
Reset at g; I.5% above trip value E"'
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Setpoint Critical Time Timer (seconds)
(seconds)
. +.
4-kV Shutdown Boards 2-211-1A 0.27 1 5%
- 0. 3' Auxiliary timers for (Timers shown f '
4-nV shutdown board 2-211-2A 4.00 + 5%
N/A secend. level-under-Y
-voltage sensing.
A.
4-kV shutdown 2-211-3A 7.43 1 5%
B.2 relays.
boards B, C, and D' 2-211-4A 1.36 1 5%
.1.5 The setpoint ranges similiar, except for change of suffix) specified. assure that the operating times will be below the
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critical times speci-fled..These ranges are based ~on timer' repeatability of + 5%-
i
-as specified by'tIIe i
-s manufacturer.
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