ML20153F949
| ML20153F949 | |
| Person / Time | |
|---|---|
| Site: | Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png |
| Issue date: | 08/29/1988 |
| From: | Mroczka E CONNECTICUT YANKEE ATOMIC POWER CO., NORTHEAST UTILITIES |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| Shared Package | |
| ML20153F953 | List: |
| References | |
| B12979, TAC-66797, NUDOCS 8809070553 | |
| Download: ML20153F949 (3) | |
Text
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l NORTDMAST UTILITIES o.n.ni One.. . s.io.n si,.. . n.,i,n. Conn.ci,cui 9 )' $E'I' P O. BOX 270 H ARTFORD. CONNECTICUT 06141-027o L ' J ' ~% %.*C.'%~ con ees-sooo August 29, 1988 Docket No. 50 211 B12979 Re: 10CFR50.90 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555
Reference:
(1) E. J. Mroczka letter to U.S. NRC Document Control Desk, "Proposed Revision to Technical Specifications Degraded Grid Voltage Protection System," dated November 17, 1987.
Gentlemen:
Haddam Neck Plant Proposed Revision to Technical !pecifications Electrical Power Systems iTAC No. 66797)
On November 17, 1937 Connecticut Yankee Atomic Power Comp 2ny (CYAPCO) submit-ted a proposed amendment to facility Operating License DPR 61, by incorporat- )
ing the changas identified in Attachment 1 of Reference (1) into the Tec1nical Specifications of the Haddam Neck Plant. The proposed changes incorporated degraded grid voltage protection requirements. Specifically, the proposed changes involved the addition of operability requirements for offsite and onsite power sources with limiting conditions for operations (LCO) and time requirements for corrective actions to Technical Specification 3.12 Station Service Power. In addition. Technical Specification 4.2 was modified to include requirements for testing and channel calibration of the undervoltage instruments. During an NRC meeting on February 25, 1983, certain changes were identified which would require CYAPCO to revise the proposed license amend-ment. It was agreed that CYAPC0 would revise the proposed license amendment and submit a new Technical Specification 3.12 entitled "Electrical Power System" which would incorporate the degraded grid requirements in the Westinghouse (W) Standard Technical Specification (STS) format.
Accordingly, pursuant to 10CFR50.90, CYAPC0 hereby submits a revision to tne proposed amendment (Reference (1)) to its Operating License, DPR 61, by incorporating the changes identified in Attachment 1 into the Technical Specifications of the Haddam Neck Plant. This submittal supersedes Reference (1) in its entirety.
8809070553 00C029 PDR ADOCK 05000213 I\
P PNU
U.S. Nuclear Regulatory Commission E12979/Page 2 August 29, 1988 Section 3.12 "Station Service Power" and Section 4.5 "Emergency Power System Periodic Testing" are being revised and combined into a newly titled fection 3.12 "Electrical Power System." The proro*ed changes: 1) incorporate the degraded grid voltage protection requirements, 2) incorporate emergency recommendations contained in Generic Letter 84-15, diesel generator "Proposed (EDG) lo Improve and Maintain Diesel Generator Reliability,"
Staff Actions
- 3) incorporate industry improvements, 4) convert the technical s pecification format into that of NRC approved W STS, and 5) incorporate requ' rements for battery discharge testing as required by the Systematic Evaluation Program (SEP) Topic Vlli 3.A. Station Battery Test Requirements.
h in the course of evaluating the impacts of the test program on EDG tatlure probability, we have developea preliminary engineering data that suggests that alternative EDG testing frequencies may improve safety. We believe that EDG testing frequencies should be nptimized to provide an improved degree of protection to that provided by the STS. We plan on addressing this issue genaritally for all four of our plants in a future submittal.
ConsisteH m 5 Reference (1), CYAPC0 is resubmitting Section 4.2 "Operational Safety lu which provides requirement? for ralibrating the level one, level two, and level three undervoltage instruments and performing channel functional tests. Table 4.2-la "Emergency Bus Undervoltage Instrumentation" is being added to set forth the number of required channels, the applicable modes, the limiting condition for operation and the action requirements.
Attachment 1 provides a description of the proposed changes.
CYAPCO has reviewed the proposed changes in accordance with 10CFR50.92 and has determined that they involve no significant hazards considerations. The basis of the determination is discussed in Attachment 2.
Moreover, the Commission has provided guidance concerning the appitcation of the standards in 10CFR50.92 by providing certain examples (March 6,1986. FR 7751) of amendments that are considered not itkely to involve a significant hazards consideration. The changas proposed herein are envelcped by example (ii), a change that constitutes an additional limitation, restriction or control not previously included in the Technical Specifications. These proposed changas would add LCOs and :urveillance requirements for the electri-cal power systems. This will help ensure the operability and reliability of the A.C. and 0.C. power sources and associated distribution systems during operation, and ensure that sufficient power will be available to supply the safety related equipment required for: (1) the safe shutdown of the facility and (2) the mitigation and :.ontrol of accident conditions within the facility.
As requested. Attachment 3 provides a mark up of the W STS.
Based upon the information in this submittal, there are no significant radio-logical or nonradiological impacts associated with the proposed changes, and the proposed license amendment will not have a significant effect on the quality of the human environment.
U.S. Nuclear Regulatory Commission B12979/Page 3 August 29, 1988 The Haddam Neck P; ant Nuclear Review Board has reviewed and approved the attached proposed revisions and has concurred with the above detenninations.
In accordance with 10CFR50.91(b), we are providing the State of Connecticut with a copy of this proposed amendment.
The application fee of $150.00 was previously submitted with Reference (1).
- Very truly yours, CONNECTICUT YANKEE ATOMIC POWER COMPANY M fW Sen o e res ent cc: W. T. Russell, Region I Administrator A. B. Wang, NRC Project Manager, Haddam Neck Plant J. T. Shediosky, Senior Residerst Inspector, Haddam Neck Plant Mr. Kevin McCarthy Director, Radiation Control Unit Department of Environmental Protection Hartford, Connecticut 06116 STATE OF CONNECTICUT)
) ss. Berlin COUNTY OF HARTFORD )
Then personally appeared before me, E. J. Hroczka, who being duly sworn, did state that he is Senior Vice President of Connecticut Yankee Atomic Power Company, a Licensee herein, that he is authorized to execute and file the foregoing information in the name and on behalf of the Licensees herein, and that the statements contained in said information ate true and correct to the !
best of his knowledge and belief.
vE wb Aotaiy P c thCommissbnErpies March 3f,Mr[
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