ML20039G341
| ML20039G341 | |
| Person / Time | |
|---|---|
| Site: | Framatome ANP Richland |
| Issue date: | 12/16/1981 |
| From: | Malody C SIEMENS POWER CORP. (FORMERLY SIEMENS NUCLEAR POWER |
| To: | Page R NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| Shared Package | |
| ML20039G342 | List: |
| References | |
| 20064, NUDOCS 8201180076 | |
| Download: ML20039G341 (5) | |
Text
'Jo -M6'I ERON NUCLEAR COMPANY,Inc.
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Phone. (509)375 Bl00 Telex: 15 2878 m,. p Mr.
R. G. Page, Chief
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Uranium Fuel Licensinc Pe N
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Ref: Letter, R.G.
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Dear Mr. Page:
The reference letter requested some clarification of the Exxon sf Nuclear Company, Inc. Radiological Contingency Plan which was submitted f
for your review on August 20, 1981.
Responses to those questions are contained in the attachment to this letter.
In addition, appropriate pages of the subject plan have been revised and are enclosed (6 copies) for replacement of similar pages of the plan originally submitted. The modified sections of the replacement pages have been identified by lines in the margins for case of review.
The reference letter also requested copies of the Emergency Plan Quick Reference and Implementing Procedures documents.
These two documents are not considered as part of our response to the Order of February 11, 1981 but are internal documents generated to assist us in implementation of the radiological contingency plan.
Since they are working documents, they are subject to frequent revision. Six (6) copies of the two documents requested are being forwarded under separate cover for information only to assist you in review of the previously submitted plan.
The implementing procedures are currently under revi-sion; however, the draft copies submitted are considered to be adequate for your purposes at their current state of revision. We request that these documents not be placed in the Public Document Room and that they be returned following their use.
Very truly yours, b
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C. W. Malody, May ger Licensing & Compliance, Operating Facilities CW1:cic
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ATTACHMENT I i
RESPONSE TO NRC QUESTIONS REGARDING EXXON NUCLEAR COMPANY'S EMERGENCY AND RADIOLOGICAL CONTINGENCY PLAN Item #1: The mixed oxide facility has been summrily dispensed with in your plan.
It is requested that you deceribe the disposition of the 500 gramo plutonium contamination on internal surfaces i
of fuel fabrication procesa equipment in some detail to assist in the asseaement of its dispercibility under accident condi-i tions.
The release of PuO,,under accident conditione chould be appropriately considerelt throughout your Plan.
If the conocquences of such accidental releacea are small, including those resulting from fire and severe natural phenomena, pro-i vide the supporting analyace.
Response: The fact that Exxor. Nuclear has, as a possession limit, 500 grams plutonium is somewhat misleading.
Conserva-tive estimates indicate no more than 93 grams Pu to be present l
in the Specialty Fuels (MO) facility, all as surface contami-l nation inside equipment in gloveboxes (95%) and in ventilation j
ductwork (5%). All plutonium operations have been halted.
Following cessation of plutonium operations, the involved gloveboxes and equipment received extensive decontamination.
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The potential for dispersion of the remaining material is deemed to be very low.
Additional discussion is given in Section 2.1.2.
SECTION-BY-SECTION i
i Item #2:
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2.2.2.2 The design criterion of 20 lb/ft" for vind loading for containment buildings equates to a 90 mph vind. How often are vindo in excess of 90 mph anticipated? Add high cindo, i. e., those in exceos of 90 mph, to the accident clacaification of Chapter 4 in the probability i
of such vinda exceeds 20~ per year.
Response: Theprobabilityofhavingwindsinexcessog 90 mph is less than 6x10 per year, and peryearforwindsinexcessof125 mph.gssthan10 High winds l
j were added to the accident classification table in Chapter 4, see Table 4.2.1.
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Item #3:
3.1.2.3 Indicate the locations of continuous air monitors.
i Response: Location of continuous room air monitors are l
given in Figures 2.2.3 and 2.2.4 of the plan.
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l Item #4:
i 3.1.2.4 Clarify what io meant by "Three detectora in each loca-tion are act to trip at 80 mrem /hr.
7Do acts of detectors operate in two-aut-of-N coincidence, chere N equale three to oix per comparator panel?" Where are the detectoro?
Hou doca the cyaten vork?.If three detectors at each location trip at 80 mrem /hr, at uhat level do the othere trip? Are there othera?
i Response: Section 3.1.2.4 of the plan has been expended to better clarify how the criticality alarm system func-tions.
In addition, Section 1.6 of Reference 1 of the plan provides additional information on the criticality alarm system in general.
Item #5:
3.2.1.1 Hou large is the "large capacity", " standby" acrubber?
Hou is it activated?
Response: See Section 3.2.1.1, as revised.
Item #6:
3.2.1.5 Hou are the " automatic deluge cystems" in the filter plenwns activated?
Response: The aatomatic deluge system is activated by a heat sensing device located in the plenums.
Item #7:
3.2.1.7 Supply a procedure for manipulation of the valvea on the eight inch water loop to maintain flou when one supply line has failed.
i Response: When c.cte supply line fails, an isolation valve on that line is closed. This maintains the water pressure in the eight inch water loop around the plant.
Item #8:
3.2.1.8 Decaribe the ammonia tanks.
What abnormal conditions cause the supply line valves to shut off?
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Response: See Section 3.2.1.8 as revised.
8 Item #9:
5.1 Provide an organit:ation chart for normal operations.
Response: An organization chart for normal operations has been-mMed as Figure 5.1.1.
Item #10:,
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Appendix 4 What is the 'basia for UO,f,, concentration equal to 20% of HF con-centration when atoichioine'try of the hydrolycia reaction indicates
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25%?
Response: See Appendix 4 as revised.
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References:
1)
" Effects of Natural Phenomena on the Exxon Nuclear Company Mixed Oxide Fabrication Facility at Richland, Washington",
NUREG-0722, Docket No. 70-1257, September 1980.
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