ML20245F893
| ML20245F893 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 04/18/1989 |
| From: | Knighton G Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20245F881 | List: |
| References | |
| NUDOCS 8905030030 | |
| Download: ML20245F893 (5) | |
Text
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( 'k Uit!!TED STATES g
NUCLEAR REGULATORY COMMISSION 5.*
j WASHINGTON, D. C. 20555
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SACRAMENTO MUNICIPAL UTILITY DISTRICT DOCKET NO. 50-312 RANCHO SECO NUCLEAR GENERATING STATION AMENDMENT TO FACILITY OPERATING LICENSE Amendment No.103 1.icense No. DPR-54 1.
The Nuclear Regulatory Commission (the Commission) has found that:
A.
The application for amendment by Sacramento Municipal Utility District (the licensee) dated December 12, 1986 complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Commission's regulations set forth in 10 CFR Chapter I; t
B.
The facility will operate in conformity with the application, the provisions of the Act, and the regulations of the Commission; C.
There is reasonable assurance (i) that the activities authorized by this amendment can be conducted without endangering the health and safety of the public, and (ii) that such activities will be conducted in compliance with the Commission's regulations; D.
The issuance of this amendment will not be inimical to the common defense and secu'rity or to the health and safety of the public; and E.
The issuance of this amendment is in accordance with 10 CFR Part 51 of the Commission's regulations and all applicable requirements have been satisfied.
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8905030030 890418 PDR ADOCK 05000312 P
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2.
Accordingly, the license is amended by changes to the Technical ll Specifications as indicated in the attachment to this license amendment, and paragraph 2.C.(2 ) of Facility Operating License No. DPR-54 is hereby amended to read as follows:
(2 ) Technical Specifications
)
i The Technical Specifications contained in Appendices A and B, as revised through Amendment No.103, are hereby I
incorporated in the license. The licensee shall operate the facility in accordance with the Technical Specifications.
3.
This license amendment is effective as of its date of issuance.
FOR THE NUCLEAR REGULATORY COMMISSION 1
I.O Jk
'Pt GeorgeW,,Knightondirector Project" Directorate V Division of Reactor Projects - III, I
IV, V and Special Projects
Attachment:
Changes to' the Technical
'I Specifications l
Date of Issuance: April 18, 1989 i
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l ATTACHMENT TO LICENSE AMENDMENT NO.103 FACILITY OPERATING LICENSE NO. DPR-54 l
-DOCKET NO. 50-312 Replace the following pages of the Appendix "A" Technical Specifications with the attached pages. The revised pages are identified by Amendment number and contain vertical lic s indicating the area of change.
Remove Insert j
4-42 4 42 i
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4-42b 4-42b l
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RANCHO SECO UNIT 1 TECHNICAL SPECIFICATIONS i
Surveillance Standards 4.11 REACTOR BUILDING PURGE EXHAUST FILTERING SYSTEM-Applicability Applies to the Reactor Building Purge Exhaust filter system.
Objective To verify that the Reactor Building purge exhaust filter system and its components will be able to perform their design functions.
Specification 4.11.1 Proper operation of this exhaust ventilation system shall be:
A.
Verified at a CONTAINMENT INTEGRITY condition within 30 days prior to start of fuel handling in the Reactor Building, by observing flow-through the HEPA filter and charcoal adsorber train and verifying that the train operates with'at least'two, but less than six, inches water gauge pressure drop across the combined HEPA and Charcoal filter banks. Air flow rate through the filter train during the observation shall be adjusted to maintain 60,000 cfm
- 10%, which is the maximum achievable flow rate at the condition of CONTAINMENT INTEGRITY.
B.-
Verified at least once per refueling interval, or once every 18 months, whichever occurs first, or after each partial or complete replacement of the HEPA filter bank or charcoal adsorber bank, or following painting, fire, or chemical release in.the operating air makeup system, or after any structural maintenance on the HEPA filter or charcoal adsorber housings, by:
I 1.
Verifying that the charcoal adsorbers remove >99.5 % of a halogenated hydrocarbo'n refrigerant test gas when they are tested in-place in ac.:ordance with ANSI N510'while operating l
the filter train at a flow rate of 66,700 cfm
- 10%. -
2.
Verifying that the HEPA filter banks removed >99.9 % of the DOP when they are tested in-place inLaccordance with ANSI N510 while operating the filter train at a flow rate of 66,700 cfm * - 10%.
3.
Verifying within 31 days after removal, that a lab analysis of a carbon sample from at least one test canister or carbon sample removed from one of the charcoal adsorbers demonstrates a removal efficiency of >95 % for radioactive methyl-fodide when the sample is. tested as used charcoal in accordance with ASTM D3803 (30*C, 95% R.H.).
The carbon samples not obtained from test canisters shall be prepared-from either:
4-42 Amendment No. M,103 i
RANCHO SECO UN!T 1 TECHNICAL SPECIFICATIONS l
Survefilance Standards Specification (Continued) 4.11.1D.2 (b)
Verify that the HEPA filter banks remove >99.9 %of the DOP when they are tested in-place in accordance with ANSI N510 while operating the filter train at a flow rate of 66,700 cfm
- 10%.
l Bases l
The Reactor Building Purge Exhaust filter system consists of preffiter, HEPA 1
filter, and Type II Charcoal Filter Banks arranged in series. Provisions are i
made to ventilate the building at two basic rates:
16,670 cfm in " Winter" and 66,700 cfm in " Summer," except during CONTAINMENT INTEGRITY conditions, the maximum air flow rate is 60,000 cfm
- 10%. Th'ere is no restriction as to which is used, other than during containment integrity conditions.
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During normal cperation, the Reactor Building Purge Valves are closed per-Specification 3.6.7; thus, there is then no flow through the Reactor Building Purge Exhaust filter system through the purge valves. Dampers are provided I
downstream of the filter train which allow outside ambient air to be drawn into the fan such that it operates at a constant 74,000 cfm. The fan discharge is routed, via two ducts, to vent to atmosphere near the top of the Reactor Building.
The Reactor Buf1 ding Equalizing line allows relieving excess butiding pressure accumulated during operation to be vented into the purge exhaust filters, even if the fan is shutdown. This ensures that the relatively'small volume of
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vented gas will be filtered prior to dispersion.
The purpose of the filter train is to assure as low as reasonably achievable doses would result from a dropped fuel assembly, or if a LOCA were to occur during purging.
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4-42b Amendment No. 29, 103
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