ML112520047
| ML112520047 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 09/19/2011 |
| From: | Public Service Enterprise Group |
| To: | Division of Operating Reactor Licensing |
| Ennis R, NRR/DORL, 415-1420 | |
| Shared Package | |
| ML112520029 | List: |
| References | |
| LAR S11-02, TAC ME6895, TAC ME6896 | |
| Download: ML112520047 (6) | |
Text
LAR S11-02, Deletion of E Bar Definition and Revision to RCS Specific Activity Technical Specification LAR S11-02, Deletion of E Bar Definition and Revision to RCS Specific Activity Technical Specification Salem Units 1 and 2 Pre-Application Meeting Salem Units 1 and 2 Pre-Application Meeting September 8, 2011 September 8, 2011
Overview of Proposed Change Overview of Proposed Change
- Reactor Coolant System Specific Activity Replace the current Tech Spec limits on - Average Disintegration Energy with limits on noble gas activity.
The noble gas activity would be based on DOSE EQUIVALENT XE-133 and would take into account the noble gas activity in the primary coolant.
Li A
d t R t (LAR) S b itt l St t 2
- License Amendment Request (LAR) Submittal Strategy The technical basis for the proposed change will be plant specific and consistent with the approach provided in TSTF 490, Rev. 1 However, PSEG does not plan to reference the TSTF in the LAR.
The LAR will maintain consistency with industry precedent.
Current Licensing Basis Current Licensing Basis TS Definitions 1.10 Dose Equivalent I-131 1.11 - Average Disintegration Energy Reactor Coolant System Specific Activity LCO 3.4.8 (S1) & LCO 3.4.9 (S2)
- Defines limits for specific activity of primary coolant to be:
3
- 1.0 Ci/gm DOSE EQUIVALENT I-131
>> Or less than the limit line as shown on Figure 3.4-1 for specific power levels
- 100 / Ci/gm
- Provides Table 4.4-4 for sampling requirement frequencies to determine if the specific activity of the primary coolants is within allowable limits
Proposed Licensing Basis Proposed Licensing Basis
- TS 1.10 (S1 & S2)
Minor text changes to explicitly identify the source for the dose conversion factors (DCFs) to be used to calculate Dose Equivalent I-131 DCFs shall be the Thyroid Committed Dose Equivalent (CDE) inhalation dose conversion factors from Table 2.1 of Federal Guidance Report No. 11 (FGR-11), Limiting Values of Radionuclide Intake and Air Concentration and Dose Conversion Factors for Inhalation, Submersion, and Ingestion, 1988.
- TS 1.11 (S1 & S2)
Delete - Average Disintegration Energy definition and replace with definition for Dose Equivalent Xe-133 DCFs shall be the air submersion Effective dose conversion factors from Table III.1 of Federal Guidance Report No. 12, (FGR-12) External Exposure to Radionuclides in Air, Water, and Soil, EPA, 1993.
- TS Figure 3.4-1 (S1 & S2) 4
Delete figure
- LCO 3.4.8 (S1) & LCO 3.4.9 (S2)
Revise text to remove reference to Figure 3.4-1, and to replace it with a DEI primary coolant specific activity level of 60 Ci/gm
Replace 100/E Bar specific activity limit for primary coolant nuclides other than iodine with a dose equivalent Xe-133 specific activity limit of 601 Ci/gm
Change applicability requirements to Modes 1, 2, 3, and 4
- SR 4.4.8 (S1) & SR 4.4.9 (S2)
Revised based on industry precedent
Effect on Safety Effect on Safety
- Limits on specific activity of the reactor coolant ensure that the offsite and control room doses are appropriately limited during analyzed transients and accidents.
- This change will implement a LCO that is consistent with the whole body radiological consequence analyses which 5
the whole body radiological consequence analyses which are sensitive to the noble gas activity in the primary coolant.
Conclusion Conclusion
- No significant hazards consideration No physical or plant operational changes Proposed change ensures consistency with assumptions in the safety analyses Proposed change will ensure the monitored values are b
d d b th i iti l ti i th f t l
6 bounded by the initial assumptions in the safety analyses