ML17278B177
| ML17278B177 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 01/21/1987 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML17278B176 | List: |
| References | |
| TAC-61222, NUDOCS 8702030483 | |
| Download: ML17278B177 (5) | |
Text
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e e 0 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 SAFETY EVALUATIOtl BY THE OFFICE OF NUCLEAR RFACTOR REGULATION SUPPORTING AI".ENDMENT NO. 36 TO FACILITY OPERATING LICFNSE NO.
NPF-21 WASHINGTON PUBLIC POWER SUPPLY SYSTEM WPPSS NUCLEAR PROJECT NO.
2 DOCKET NO. 50-397
1.0 INTRODUCTION
2.0 By letter dated April 8, 1986, as clarified by letter dated November 20,
- 1986, the Mashington Public Power SIIpply System (MPPSS) submitted an applicatio'n to amend Washington Nuclear Project, Unit 2 {WNP-2) License NPF-21.
The request involves the deletion of the chlorine detection system due to per-manent plant changes involving the elimination of chlorine gas storage from the site.
As a result, the licensee has'oncluded that the threat to control room habitability due to chlorine gas incapacitation has been eliminated.
EVALUATION Chlorine gas previously was stored on the hNP-2 site for use in cir-culatino water chemical treatment.
Hence, in order to meet the guidance of Regulatory Guide 1.95, Revision 1, "Protection of Nuclear Power Plant Control Room Operators Against An Accidental Chlorine Release",
the control room was equipped with redundant quick response chlorine detectors with provision for automatic isolation.
This provision ensured control room habitability following a chlorine release on site.
WPPSS has recently changed the circulating water treatment system to a system using sodium hypochlorite.
As a result, chlorine gas is no longer used and is no lonqer stored
.on the WNP-2 site.
- Hence, the MNP-2 chlorine detection system is no longer needed to ensure control room habitability in the event of a chlorine gas release.
Other nuclear facilities located within a five mile radius of WNP-2 are the DOE's Fast Flux Test Facility (located 2.7 miles SSW of MNP-2) and the MPPSS's deferred WNP-1 Project (located one mile ESE of MNP-2).
Neither of these facilities stores chlorine gas; therefore neither re-presents a threat to the control room habitability at WNP-2.
Chlorine gas is used at several Department of Energy (DOE) facilities on the Hanford site at distances beyond five miles.
The primary destination (and primary areas of use) from which chlorine is distributed to other facilities is the 100-N Area located 18 miles NM of MNP-2.
Prior to July 1983, chlorine was transported to the 100-N Area on flatbed rail
- cars, each loaded with 15 1-ton cylinders.
Shipment freauency was one carload every 4-6 months.
At its closest
- approach, the railroad is about 750. ft. from the control room air intake (and about 90 ft. lower)
,on the east side of the plant.
Since mid-1983, chlorine has been ti ansported to the 100-N Area by truck and trailer in the same quantities and frequencies as before.
Two or three times per year a single fuel 8702030483 870121 PDR ADOCK 08000397 t
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3.0 cylinder is trucked
~rom the 100-N Area to the 300 Area located 7.5 miles SSE of WNP-2.
The truck route passes 1.5 miles to the SW.
In the future, shipments to 100-N Area could be either by truck or rail.
On the basis of the licensee-described DOF. purchase agreement and anticipated
- usage, the upper limits of quantity and frequency of chlorine shipments in the vicinity of WNP-2 appears to be as follows:
northbound - 15 1-ton cylinders four times per year (by truck or ra'1); southbound - a 1-ton cylinder four times per year (by truck).
These shipment frequencies are within the guidelines of Regulatory Guide 1.78.
On the basis of our review, the staff finds that the hazard represented by chlorine gas stored on site has been eliminated because of the chanqe to a water purification system using sodium hypochlorite.
There is no other facility within a five mile radius of the WNP-2 site that stores chlorine gas on site.
In addition, the quantity and the frequency of chlorine gas.
shipments in the WNP-2 vicinity are within the guidelines of Regulatory Guide 1.78.
Therefore, the staff concludes that the licensee's proposed amendment to WNP-2 Technical Specification for the deletion of the chlorine detection system is acceptable.
ENVIRONMENTAL CONSIDERATION 4.0 This amendment involves a change in the installation and use of a facility component located withi'n the restricted area as defined in 10 CFR Part 20 and chances in surveillance requirements.
The staff has determined that this 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 cumula-,
tive occupational radiation exposure.
The Commission has previously issued a proposed finding that this amendment involves no significant hazards consideration and ther e has been no public comment on such finding.
Ac-cordingly, this amendment meets the eligibility criteria for categorical exclusion set forth in 10 CFR 51.22(c) (9l.
Pursuant to 10 CFR 51.22(b),
no environmental impact statement or environmental assessment need be pre-pared in connection with the issuance of this amendment.
CONCLUSION The Commission made a proposed determination that the amendment involves no significant hazards consideration which was published in the FEDERAL REGISTFR (51 FR 32281) on September 10,
- 1986, and consulted with the state of Washington.
No public comments were received, and the state o
Washington did not have any comments.
We have 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 Commission's regula-tions and the issuance of this amendment will not be inimical to the common defense and security or to the health and safety'f the public.
Principal Contributor:
Angela T. Chu, NRR Dated:
January 21, 1987
AMENDMENT NO.
36 TO FACILITY OPERATING LICENSE NO.
'PPSC NUCLEAR POJECT NO.
2 DISTRIBUTION:
Docket No.,50.-397 NRC PDR
'ocal PDR PRC System NSIC BMD-3 r/f JBradfute (2)
EHylton (1)
EAdensam
- Attorney, OELD CMi les RDiggs JPartlow EJordan BGrimes LHarmon TBarnhart (4)
EButcher
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