ML20106E465

2020-02-Draft Outline Comments

ML20106E465
Person / Time
Site:	Diablo Canyon
Issue date:	03/06/2020
From:	Greg Werner Operations Branch IV
To:	Pacific Gas & Electric Co
References
Download: ML20106E465 (2)

Text

PROPOSED OUTLINE COMMENTS Facility: Diablo Canyon First Exam Date: 2/4/20 Administrative JPM Outline (Date)

Comment Resolution Since there is a tube rupture event in Replaced JPMs A4 and A8 with alternates.

scenario 2, I am very concerned that Content of A9 does not appear in scenario 2 1

there is overlap with JPMs A4, A8 and (no actions associated with E-Plan occur as possibly A9. part of the scenario).

Additional changes:

Replaced A3 with different JPM (same K/A)

Control Room / In-Plant System JPM Outline (Date)

Comment Resolution E Type Code only applies to in-plant Removed "E" type code from JPMs S5 and 1

JPMs (affects S5 and S6) S6.

S8 is listed as C and S. It is either in Removed "C" type code.

2 the control room or simulator, not both.

Is it possible to modify one of the in- Created new in-plant JPM to replace LJP-3.

3 plant JPMs so all three are not direct from bank?

Additional changes:

Changed K/A associated with S2 Replaced S4S to avoid potential overlap issue based on scenario revision.

Simulator Scenario Outline Comments (Date)

Comment Resolution Scenario 2, Critical Task 3, I do not see Revised scenario to shorten run time. New 1

how the CT is bounded Critical Task bounding changed as a result.

Scenario 4, Critical Task 1, how long in Removed original critical task #1.

2 the given situation does it take to reach dryout? i.e., is it a reasonable CT?

Scenario 5, Critical Task 3, I do not see Revised scenario to shorten run time. New 3

how the CT is bounded Critical Task bounding changed as a result.

Additional changes:

Scenario #1 o Corrected steam lead nomenclature on CT-1 (second bullet).

o Refined actions required for CT-2. OBDI 202 - IOLE Process Rev 3

o Clarified CT-3 to eliminate note.

o Eliminated "manual trip" from item 5 of scenario summary based on timing.

Scenario #2 o Revised event 1.

o Revised backend of scenario (scenario events 6 and 8) to shorten run time. Now straight tube rupture rather than rupture with loss of pressurizer pressure control.

o Revised attribute table, CT-3, and scenario summary to reflect backend revision.

Scenario #4 o Replaced event 1.

o Revised events 3 and 5 to shorten scenario run time.

Scenario #5 o Added new event #1 and deleted old event 2; old event 1 now event 2.

o Revised backend of scenario (scenario events 7 and 8) to shorten run time. Now straight SBLOCA with ECCS pump failures resolvable from the control room o Revised attribute table, CT-3, and scenario summary to reflect backend revision as well as initial event (now normal).

o Changed OOS equipment to support backend changes.

301-1-5s o All scenario events recalculated to reflect changes described above.

o Groups I and IV revised to reflect current class configuration. OBDI 202 - IOLE Process Rev 3