ML21032A238: Difference between revisions
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{{#Wiki_filter:}} | {{#Wiki_filter:Incorrect 2 year window 2 year 2/2021 2/2017 window for 2/2019 *RFO | ||
* RFO ISTC-3700 *RFO *ISTC-3700 Test (SPI | |||
* ISTC-3700 Test *ISTC-3700 Test (SPI required) required) 8/2019 7/2018 | |||
*End of ISTC-3700 Grace | |||
* 2012 OM Code per OMN-20 (if adoption applicable) | |||
* Spring refueling outage (RFO), during which ISTC-3700 testing is performed (2/2017). | |||
* IST Program updates to 2012 OM Code after this test (7/2018). | |||
* Next ISTC-3700 test is due 2 years after last ISTC-3700 test (2/2019). | |||
* 10 CFR 50.55a(b)(3)(xi) conditions the existing requirements of ISTC-3700 (states when implementing paragraph ISTC-3700) so the supplemental verification occurs on the same schedule, but may be performed at a different time within the 2 year window for ISTC-3700 testing (i.e. need not be concurrent). | |||
This provides flexibility to conduct local observation and pressure/flow measurement for both the open and close directions. | |||
* The wording for supplemental verification has been present as an ASME-recommended practice in the OM Code for years (as far back as OMa-1988). | |||
* A plant could conduct supplemental verification earlier than IST Program 2012 update, or submit a proposed alternative if additional time is needed to safely perform supplemental verification.}} | |||
Latest revision as of 19:47, 20 January 2022
| ML21032A238 | |
| Person / Time | |
|---|---|
| Issue date: | 02/01/2021 |
| From: | Douglas Bollock NRC/NRR/DRO/IRIB |
| To: | |
| Douglas Bollock, NRR/DRO/IRIB, 415-6609 | |
| References | |
| Download: ML21032A238 (1) | |
Text
Incorrect 2 year window 2 year 2/2021 2/2017 window for 2/2019 *RFO
- ISTC-3700 Test *ISTC-3700 Test (SPI required) required) 8/2019 7/2018
- End of ISTC-3700 Grace
- Spring refueling outage (RFO), during which ISTC-3700 testing is performed (2/2017).
- Next ISTC-3700 test is due 2 years after last ISTC-3700 test (2/2019).
- 10 CFR 50.55a(b)(3)(xi) conditions the existing requirements of ISTC-3700 (states when implementing paragraph ISTC-3700) so the supplemental verification occurs on the same schedule, but may be performed at a different time within the 2 year window for ISTC-3700 testing (i.e. need not be concurrent).
This provides flexibility to conduct local observation and pressure/flow measurement for both the open and close directions.
- The wording for supplemental verification has been present as an ASME-recommended practice in the OM Code for years (as far back as OMa-1988).
- A plant could conduct supplemental verification earlier than IST Program 2012 update, or submit a proposed alternative if additional time is needed to safely perform supplemental verification.