ML18124A204
| ML18124A204 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 10/16/2017 |
| From: | Susquehanna, Talen Energy |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML17331A584 | List:
|
| References | |
| PLA-7636 | |
| Download: ML18124A204 (291) | |
Text
SSES-FSAR Question Rev. 47 FSAR Rev. 64 110.23-1 QUESTION 110.23 Expand Sections 3.6.2.2.2 (pages 3.6-20 through 25), 3.6.2.3 (pages 3.6-25 through 30) and 3.6.2.5.1.4 (page 3.6-31) to describe the protection criteria for the effects due to jet impingement. RESPONSE: Subsection 3.6.1.1 provides a description of t he protection criteria for the effects due to jet impingement; specifically that portion that reads:
The failure of piping containing high energy fluid may lead to damage of surrounding systems and equipment. The effects of such a failure including pipe whip, fluid jet impingement, flooding, compartm ent pressurization, and env ironmental effects require special consideration to ensure the following: a) The ability to shut down the reactor safely and maintain it in a safe shutdown condition. b) Containment integrity.
c) A pipe break which is not a loss of r eactor coolant must not cause a loss of reactor coolant. d) Resultant doses are below the guideline values of 10CFR50.67. This criteria is applicable to those pipi ng systems described in Subsection 3.6.2.2, 3.6.2.3, and 3.6.2.5 as well as all ot her high or moderate energy piping systems.
SSES-FSAR Table Rev. 47 FSAR Rev. 65 Page 1 of 1 TABLE 110.42-1 ACCEPTANCE CRITERIA FOR NSSS PIPING & EQUIPMENT Load Case N SRV x SRV ADS OBE SSE IBA (5) DBA (5) Acceptance Criteria 1 X X B (1) 2 X X X B (6) 3 X X X D (3) 4 X X X (2) C 5 X X X X (2) D (3) 6 X X X (2) D (3) 7 X A 8 X X B 9 X X X C (3) NOTES: (1) For load case 1, all ASME Code Service Level B requirements are to be met, including fatigue usage. All SRV discharge load effects will be combined with mechanistically associated loads and taken for the number of cycles consistent with the 40 year design life of the plant. These cycles also bound those expected for the period of extended operation of the plant.
(2) Loading due to DBA/SBA/IBA is determined from rated steady-state conditions.
(3) Piping functional capability will be assured fo r essential piping per 10-2 or NEDE 21985.
(4) Not used.
(5) IBA and DBA includes all associated loads such as annulus pressurization, pool swell, chugging, etc. (6) For load case 2, all ASME Code service requirements are to be met, excluding fatigue usage.
(7) For specific load combinations refer to Table 3.9-2.
SSES-FSAR Question Rev. 47 FSAR Rev. 64 110.23-1 QUESTION 110.23 Expand Sections 3.6.2.2.2 (pages 3.6-20 through 25), 3.6.2.3 (pages 3.6-25 through 30) and 3.6.2.5.1.4 (page 3.6-31) to describe the protection criteria for the effects due to jet impingement. RESPONSE: Subsection 3.6.1.1 provides a description of t he protection criteria for the effects due to jet impingement; specifically that portion that reads:
The failure of piping containing high energy fluid may lead to damage of surrounding systems and equipment. The effects of such a failure including pipe whip, fluid jet impingement, flooding, compartm ent pressurization, and env ironmental effects require special consideration to ensure the following: a) The ability to shut down the reactor safely and maintain it in a safe shutdown condition. b) Containment integrity.
c) A pipe break which is not a loss of r eactor coolant must not cause a loss of reactor coolant. d) Resultant doses are below the guideline values of 10CFR50.67. This criteria is applicable to those pipi ng systems described in Subsection 3.6.2.2, 3.6.2.3, and 3.6.2.5 as well as all ot her high or moderate energy piping systems.
SSES-FSAR Table Rev. 47 FSAR Rev. 65 Page 1 of 1 TABLE 110.42-1 ACCEPTANCE CRITERIA FOR NSSS PIPING & EQUIPMENT Load Case N SRV x SRV ADS OBE SSE IBA (5) DBA (5) Acceptance Criteria 1 X X B (1) 2 X X X B (6) 3 X X X D (3) 4 X X X (2) C 5 X X X X (2) D (3) 6 X X X (2) D (3) 7 X A 8 X X B 9 X X X C (3) NOTES: (1) For load case 1, all ASME Code Service Level B requirements are to be met, including fatigue usage. All SRV discharge load effects will be combined with mechanistically associated loads and taken for the number of cycles consistent with the 40 year design life of the plant. These cycles also bound those expected for the period of extended operation of the plant.
(2) Loading due to DBA/SBA/IBA is determined from rated steady-state conditions.
(3) Piping functional capability will be assured fo r essential piping per 10-2 or NEDE 21985.
(4) Not used.
(5) IBA and DBA includes all associated loads such as annulus pressurization, pool swell, chugging, etc. (6) For load case 2, all ASME Code service requirements are to be met, excluding fatigue usage.
(7) For specific load combinations refer to Table 3.9-2.