ML20236R013
| ML20236R013 | |
| Person / Time | |
|---|---|
| Site: | Hope Creek  |
| Issue date: | 11/09/1987 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20236R009 | List: |
| References | |
| NUDOCS 8711230025 | |
| Download: ML20236R013 (3) | |
Text
{{#Wiki_filter:1 i M 'o 8 g UNITED STATES NUCLEAR REGULATORY COMMISSION n r, t WASHINGTON, D. C. 20555 %.....} SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION \\ SUPP0'RTING AMENDMENT NO.11 TO FACILITY OPERATING LICENSE NO. NPF-{ PUBLIC SERVICE ELECTRIC & GAS COMPANY l ATLANTIC CITY ELECTRIC COMPANY HOPE CREEK GENERATING STATION DOCKET NO. 50-354
1.0 INTRODUCTION
By letter dated May 21, 1985, Public Service Electric A Gas Company (PSE&G), the licensee, described to the staff how the Standby Liquid Control System (SLCS) design at Hope Creek meets the requirements of ATWS Rule 10 CFR 50.62(c)(4). The. staff has informed PSE&G that the i current Hope Creek Technical Specifications (TSs) (Surveillance i Requirement 4.1.5.c) only require the two SLCS pumps to provide a minimum flow of 82.4 gpm, whereas 10 CFR 50.62(c)(4) requires that the SLCS operate at 86 gpm if the concentration of sodium pentaborate in the SLCS is 13 weight percent as currently specified by the Hope Creek TSs (Hope Creek has a 251 inch diameter reactor pressure vessel). As a result of discussions with the staff concerning the inadequacy of the current Hope j Creek TS requirements for the SLCS to assure that the SLCS meets the 1 ATWS Rule requirements, PSE&G, by letter dated July 14, 1987, requested i changes to the TSs with regard to the SLCS. The proposed changes are to TS Section 4.1.5.b.2, Figure 3.1.5-1 and Bases 3/4.1.5. The proposed changes reflect the licensee's plan to increase the minimum required concentration of sodium pentaborate in the SLCS tank (Figure 3.1.5-1) to 13.6 weight percent by increasing the required minimum weight of sodium pentaborate in the SLCS storage tank (TS 4.1.5.b.2) by 16 pounds (i.e., from 5760 to 5776 pounds). It also lowered the SLCS storage tank low and high level alarms shown on Figure 3.1.5-1 from 4850 and 4997 gallons to 4782 and { 4880 gallons respectively. This increase in concentration in conjunction j with the capability to operate both SLCS pumps simultaneously at a total combined flow rate of 82.4 gpm is proposed to satisfy the requirements of 10 CFR 50.62(c)(4). 2.0 EVALUATION l The changes proposed by the licensee have been reviewed by the staff against the requirements of the ATWS Rule (10 CFR 50.62), and Generic Letter 85-03 " Clarification of Equivalent Control Capacity for Standby Liquid Control Systems," dated January 28, 1985. The licensee's i i proposed increase in sodium pentaborate concentration to 13.6 weight percent in conjunction with a flow rate of 82.4 gpm will provide a boron 8711230025 071109 aDR ADOCK 05000354 p PDR o'
. content equivalent in control capacity to 86 gpm of 13 weight percent sodium pentaborate. This is in compliance with 10 CFR 50.62(c)(4) and is therefore acceptable. As a result of these changes, the sodium'pentaborate solution saturation-temperature increases to 62'F from 59'F (approximately 5%). The increased saturation temperature is still less than the temperature maintained by the electrical heater system which maintains the SLCS tank solution between 75'F and 85*F. The performance of TS Surveillance Requirements 4.1.5.a.1 and a.3, on a daily basis, assures'that the SLCS system heat tracing and SLCS tank electrical heater system maintains system temperature at greater than or equal to 70*F. Additionally, the areas in which the SLCS system is located are maintained at temperatures of at least 70*F. On the basis of our-review as discussed above, we have concluded that the proposed TS changes are acceptable and will assure that the SLCS is in compliance with 10 CFR 50.62(c)(4). PSE&G's plan to periodically test only one SLCS system pump'at a time instead of both pumps simultaneously is also acceptable. This finding is based upon the licensee's statement that tests were performed at Hope. Creek during startup which verified that the SLCS is capable of operating under the increased pressures associated with two pump operation. The Bases section was revised to reflect the proposed changes. The revised Bases are acceptable since it adequately explains the bases for the current requirements in the TSs.
3.0 ENVIRONMENTAL CONSIDERATION
This amendment involves a change to a requirement with respect to the installation or use of a facility component located within the restricted area as defined in 10 CFR Part 20 and changes to the surveillance requirements. The staff has determined that the amendment involves no significant increase in the amounts, and no significant change in the types, of any effluents that may be released offsite and that there is no 1 significant increase in individual or cumulative occupational' radiation j exposure. The Comission has previously issued a propond finding that 1 this amendment-involves no significant hazards consideration and there ) has been no public coment on such finding. Accordingly, this amendment-meets the eligibility criteria for categorical exclusion set forth in 10 j CFR51.22(c)(9). Pursuant to 10 CFR 51.22(b), no environmental impact- ] statement or enviror, mental assessment need be prepared in connection with j the issuance of this amendment, j 1
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4.0 CONCLUSION
1 The Commission made a proposed determination that the amendment involves no significant. hazards consideration which was published in the Federal j Register (52 FR 32208) on August 26, 1987 and consulted with the State of New Jersey. No public comments were received and the State of New Jersey did not have any comments. The staff has concluded, based on the considerations discussed above, that: (1) there is reasonable assurance that the health and safety of-the public will not be endangered by operation in the proposed manner, and (2) such activities will be conducted in compliance with the I Commission's regulations and the issuance of this amendment will not be inimical to the common defense-and security nor to the health and safety of the public. Principal Contributors: G. Thomas and G. Rivenbark Dated: November 9, 1987 l ) l I}}