ML20217G887
| ML20217G887 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 07/31/1997 |
| From: | Terry C NIAGARA MOHAWK POWER CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20217G891 | List: |
| References | |
| NMP2L-1719, NUDOCS 9708080099 | |
| Download: ML20217G887 (2) | |
Text
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NIAGARA MOHAWK G E N E R ATIO N N:NE MWGNT NWAR STAD N LAKE ROAD P O BOX f,3 LYCOMlNG. NEW YORK 13093/ TELEPHONE (315) 349-7263 BUSINESS GROUP CARL D TERRY Vice Presdctd lu! 31,l997 Nuclea Safety Assessment and Suppon
/
Nh1P2L 1719 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 RE:
Nine hiile Point Unit 2 Docket No. 50-410 NPF-69 Gentlemen:
f
- Niagara hiohawk Power Corporation (Nh1PC) hereby transmits an Application for
(
f Amendment to Nir.: hiile Point Unit 2 (NhiP2) Operating License NPF-69. Also enclosed as Attachment A is the proposed change to the Technical Specification (TS) set forth in Appendix A to the above mentioned license. Supporting information and analyses which demonstrate thzt the proposed change involves no significant hazards consideration pursuant to 10CFR50.92 are included as Attachment B. A marked-up copy of the affected TS pages is provided as Attachment C to assist your review.
Nh1PC proposes to revise TS Table 3.3.3-1, " Emergency Core Cooling System Actuation
\\d Instrumentation," Action 36. The proposed revisims would change the wording of Action
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36 so that it addresses the plant condition of having more than one inoperable channel per trip function in the High Pressure Core Spray (HPCS) drywell "; essure and reacto. water I
level instrumentation. Presently, Action 36 only addresses the plant condition of h.ving one channel per trip function inoperable. The changes will give NhfPC the capability on hh.
declaring the HPCS system inoperable, and allow entry into the applicable TS action statement, instead of cntering TS 3.0 3, %en more than one channel per trip function is inoperable in the HPCS drywell prese ra a> d reactor water level instrumentation. Presently, if the plant has more than one channel p.a (rip function inoperable, the plant is in a TS 3.0.3 condition, which requires a plant shutdown.
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Page'2 The proposed change provides consistency between the ECCS instrumentation and system TS. The TS also continues to require the operability of other injection systems coincidental with HPCS inoperability.
The plant condition of having more than one channel per trip function inoperable occurred at NMP2 on March 2fi,1997. A failure to meet certain response time testing surveillance requirements forecd the entry into required action 3.3.3.b and, by reference, Table 3.3.3-1.
However, inappropriate wording added by a previous amendment that changed Action 36 of Table 3.3.3-1 resulted in the Action Statement not addressing a plant condition of more than one inoperable channel per trip function in the HPCS drywell pressure and reactor water level instrumentation. As a result, at 1530 hours0.0177 days <br />0.425 hours <br />0.00253 weeks <br />5.82165e-4 months <br /> on March 26,1997, NMP2 entered TS 3.0.3. On March 27,1997, at 1550 hours0.0179 days <br />0.431 hours <br />0.00256 weeks <br />5.89775e-4 months <br />, following discussions with the NRC Staff, NMP2 was granted enforcement discretion with respect to TS 3.0.3. NMPC committed to correct the wordir.g of Action 36 with a TS amendment request submitted on a non-emergency basis.
Pursuant to 10CFR50.91(b)(1), NMPC has provided a copy of this license amendment request and the associated analysis regarding no significant hazards consideration to the appropriate state representative.
l Very trul ycurs,
(
y Carl D. Terry Vice President Nuclear Safety Assessment and Support CDT/TRE/cmk Attachments xc:
Mr. H. J. Miller, NRC Regional Administrator Mr. A. W. Dromerick, Acting Director, Project Directorate, I-1, NRR Mr. B. S. Norris, Senior Resident Inspector Mr. D. S. Hood, Senior Project Manager, NRR Mr. J. P. Spath NYSERDA 2 Empire Plaza, Suite 1901 Albany, NY 12223-1253 Records Management a
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