ML19280A002: Difference between revisions
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{{#Wiki_filter:NRR-DRMAPEm Resource From: | {{#Wiki_filter:1 NRR-DRMAPEm Resource From: | ||
Lee, Samson Sent: | |||
Thursday, October 3, 2019 3:58 PM To: | |||
Williams, Christian D:(Exelon Nuclear) | |||
==Subject:== | ==Subject:== | ||
FitzPatrick Emergency amendment public conference call discussion points - 3 On-Load Tap Changer In the draft LAR dated October 2, 2019, Attachment 1, Section 2.0, the following is stated: Loss or degradation of normal AC power at the 4 KV level results in an automatic fast transfer or automatic residual transfer to the offsite AC power sources through the RSSTs 71T-2 and 71T-3. These transformers contain an On-Load Tap Changer to maintain the 4KV Bus voltages under various analyzed scenarios. | FitzPatrick Emergency amendment public conference call discussion points - 3 On-Load Tap Changer In the draft LAR dated October 2, 2019, Attachment 1, Section 2.0, the following is stated: Loss or degradation of normal AC power at the 4 KV level results in an automatic fast transfer or automatic residual transfer to the offsite AC power sources through the RSSTs 71T-2 and 71T-3. These transformers contain an On-Load Tap Changer to maintain the 4KV Bus voltages under various analyzed scenarios. | ||
The licensee stated today in case the existing RSST 71T-3 cannot be repaired, the alternative will be to replace RSST 71T-3 with an old spare transformer. Does the old spare transformer has an On-Load Tap Changer? If not, will it impact the degraded voltage setpoints specified in JAFNPP TS Table 3.3.8.1-1. | The licensee stated today in case the existing RSST 71T-3 cannot be repaired, the alternative will be to replace RSST 71T-3 with an old spare transformer. Does the old spare transformer has an On-Load Tap Changer? If not, will it impact the degraded voltage setpoints specified in JAFNPP TS Table 3.3.8.1-1. | ||
: Thanks, Sam | : Thanks, Sam | ||
Hearing Identifier: | Hearing Identifier: | ||
NRR_DRMA Email Number: | |||
240 Mail Envelope Properties (BL0PR0901MB3185597138AF01AEA40CC7E99A9F0) | |||
==Subject:== | ==Subject:== | ||
FitzPatrick Emergency amendment public conference call discussion points - 3 Sent Date: | FitzPatrick Emergency amendment public conference call discussion points - 3 Sent Date: | ||
10/3/2019 3:57:50 PM Received Date: | |||
10/3/2019 3:57:00 PM From: | |||
Lee, Samson Created By: | |||
Samson.Lee@nrc.gov Recipients: | |||
"Williams, Christian D:(Exelon Nuclear)" <Christian.Williams@exeloncorp.com> | "Williams, Christian D:(Exelon Nuclear)" <Christian.Williams@exeloncorp.com> | ||
Tracking Status: None Post Office: | Tracking Status: None Post Office: | ||
BL0PR0901MB3185.namprd09.prod.outlook.com Files Size Date & Time MESSAGE 757 10/3/2019 3:57:00 PM Options Priority: | |||
Standard Return Notification: | |||
No Reply Requested: | |||
No Sensitivity: | |||
Normal Expiration Date: | |||
Recipients Received:}} | Recipients Received:}} | ||
Latest revision as of 00:54, 3 January 2025
| ML19280A002 | |
| Person / Time | |
|---|---|
| Site: | FitzPatrick  |
| Issue date: | 10/03/2019 |
| From: | Samson Lee NRC/NRR/DORL/LPL1 |
| To: | Williams C Exelon Generation Co |
| References | |
| Download: ML19280A002 (2) | |
Text
1 NRR-DRMAPEm Resource From:
Lee, Samson Sent:
Thursday, October 3, 2019 3:58 PM To:
Williams, Christian D:(Exelon Nuclear)
Subject:
FitzPatrick Emergency amendment public conference call discussion points - 3 On-Load Tap Changer In the draft LAR dated October 2, 2019, Attachment 1, Section 2.0, the following is stated: Loss or degradation of normal AC power at the 4 KV level results in an automatic fast transfer or automatic residual transfer to the offsite AC power sources through the RSSTs 71T-2 and 71T-3. These transformers contain an On-Load Tap Changer to maintain the 4KV Bus voltages under various analyzed scenarios.
The licensee stated today in case the existing RSST 71T-3 cannot be repaired, the alternative will be to replace RSST 71T-3 with an old spare transformer. Does the old spare transformer has an On-Load Tap Changer? If not, will it impact the degraded voltage setpoints specified in JAFNPP TS Table 3.3.8.1-1.
- Thanks, Sam
Hearing Identifier:
NRR_DRMA Email Number:
240 Mail Envelope Properties (BL0PR0901MB3185597138AF01AEA40CC7E99A9F0)
Subject:
FitzPatrick Emergency amendment public conference call discussion points - 3 Sent Date:
10/3/2019 3:57:50 PM Received Date:
10/3/2019 3:57:00 PM From:
Lee, Samson Created By:
Samson.Lee@nrc.gov Recipients:
"Williams, Christian D:(Exelon Nuclear)" <Christian.Williams@exeloncorp.com>
Tracking Status: None Post Office:
BL0PR0901MB3185.namprd09.prod.outlook.com Files Size Date & Time MESSAGE 757 10/3/2019 3:57:00 PM Options Priority:
Standard Return Notification:
No Reply Requested:
No Sensitivity:
Normal Expiration Date:
Recipients Received: