ML20086S675
| ML20086S675 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 07/26/1995 |
| From: | NRC (Affiliation Not Assigned) |
| To: | |
| Shared Package | |
| ML20086S654 | List: |
| References | |
| NUDOCS 9508020078 | |
| Download: ML20086S675 (3) | |
Text
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t UNITED STATES
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NUCLEAR REGULATORY COMMISSION f
WASHINGTON, D.C. 20586 4 001
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i SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT N0.118 TO FACILITY OPERATING LICENSE NO. NPF-49 NORTHEAST NUCLEAR ENERGY COMPANY. ET AL.
MILLSTONE NUCLEAR POWER STATION. UNIT NO. 3 DOCKET NO. 50-423
1.0 INTRODUCTION
By letter dated April 28, 1995 the Northeast Nuclear Energy Company (the licensee), submitted a request for changes to the Millstone Nuclear Power Station, Unit No. 3 Technical Specifications (TS). The requested changes would revise the diesel generator fuel oil testing that is performed on new fuel prior to the addition of new fuel to the storage tank. The proposed changes to the TS would amend three diesel generator fuel oil Surveillance i
Requirements (SR).
SR 4.8.1.1.2.e.l.b would be modified by including an editorial change which will correct the definition for the Saybolt viscosity range.
In SR 4.8.1.1.2.e.l.d the qualitative " clear and bright" test for determination of water and sediments in the fuel oil would be replaced by a quantitative test. The modification of SR 4.8.1.1.2.e.2 would permit the use of a cetane index instead of a cetane number for characterizing ignition quality of the diesel fuel oil supplied to the plant.
2.0 EVALUATION In the modification of SR 4.8.1.1.2.e.l.b an editorial change would be made to the definition of the Saybolt viscosity range. The corrected statement will read "...Saybolt viscosity, SUS at 100*F of greater than or equal to 32.6, but less than or equal to 40.1...."
This modification corrects the previously erroneous definition.
The modification of SR 4.8.1.1.2.e.l.d consists of replacing the qualitative
" clear and bright" test for determining water and sediments in diesel fuel oil (ASTM D-4176-82, " Free Water and Particulate Contamination in Distillate Fuel") by a quantitative test based on a centrifuge methodology (ASTM D-1796-83, " Water,and Sediment in Fuel Oils by the Centrifuge Method"). This test would permit, as required by ASTM D-975-81, it to be ascertained if water content in the fuel oil is below 0.05 percent.
In addition, this modification would allow determination of the water and sediments content in the fuel oli having color index higher than 5, a determined on the ASTM color scale in accordance with ASTM D-1500. For this high color index ASTM D-4176-82 cannot 9500020078 950~,26 PDR ADOCK 05000423 P
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be used. This modification'is acceptable because it improves determination of water and sediments and allows the testing of fuel oils with color indices higher than 5.
- The modification' of SR 4.8.1.1.e.2 would allow use of a cetane index-i calculated in accordance with ASTM D-946 instead of a cetane number which is
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determined by ASTM D-613-84. The cetane number is an experimentally
' determined parameter characterizing' ignition quality of the diesel. fuel oil, j
and the cetane index is a value calculated using the_ formula given in the ASTM i
D-946. According to this standard, the cetane index can be used only as a check for the fuel whose cetane number has been initially established. The i
staff has verified that the licensee meets this requirement since the cetane i
- number is specified for the fuel supplied to the plant. The requested modification is, therefore, acceptable.
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Criterion 17 of 10 CFR 50, Appendix A provides requirements for Electrical i
Power Systems, including provisions for minimizing the probability of losing electrical power. Diesel generator fuel oil testing is required by Standard Review Plan, Section 9.5.4, which states that " periodic tests will be performed to verify that fuel degradation does not proceed to the point where engine performance is affected." The changes the licensee has proposed are consistent with Regulatory Guide 1.137, " Fuel Oil Systems for Standby Diesel Generators," which references ap)ropriate ASTM standards.
Based on the-g evaluation the staff concludes t1at all the changes to the TS,_ proposed by the i
licensee, are acceptable because they either consist of an editorial change, improved surveillance procedure, or. meet the requirements of the appropriate ASTM standard.
3.0 STATE CONSULTATION
In accordance with the Commission's regulations, the Connecticut State official was notified of the proposed issuance of the amendment. The State official had no comments.
4.0 ENVIRONMENTAL CONSIDERATION
- The amendment changes surveillance requirements.
The NRC 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 significant increase in individual or cumulative occupational radiation exposure. The Commission has previously issued a proposed finding that the amendment involves no significant hazards consideration, and there has been no public comment on such finding (60 FR categorical,cordingly, the amendment meets the eligibility criteria for 29881). Ac exclusion set forth in 10 CFR 51.22(c)(9).
Pursuant to 10 CFR SI.22(b) no environmental impact statement or environmental assessment need be prepared in connection with the issuance of the amendment.
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5.0 CONCLUSION
The Commiss' ion 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, (2) such activities will be conducted in compliance with the Commission's regulations, and (3) the issuance of the amendment will not be inimical to the common defense and security or to the health and safety of the public.
Principal Contributor:
K.I. Parczewski Date:
July 26, 1995 1
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