ML19312D673
| ML19312D673 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon, 07001738  |
| Issue date: | 01/08/1980 |
| From: | Crane P, Shackelford B PACIFIC GAS & ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML19312D672 | List: |
| References | |
| 15149, NUDOCS 8003250175 | |
| Download: ML19312D673 (3) | |
Text
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UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION In the Matter of
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PACIFIC GAS AND ELECTRIC COMPANY
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Docket No. 50-275
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Unit 1
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License No. SNM-1503
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Diablo Canyon Site
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Pursuant to 10 CFR 70.34 Pacific Gas and Electric Company-(PGandE) hereby requests the Commission to amend NRC Materials License No. SNM-1503.
This amendment is necessary to put into the license the procedure for storing the neutron sources once the spent fuel pool is drained.
Further information in support of this amendaent is contained in revised page lla which is attacned hereto and by this reference made a part hereof.
The information contained in PGandE's application, as transmitted by letter dated July 22, 1974, and the informa-tion contained in supplements thereto transmitted by letters dated May 7 and June 3, 1975, July 7 and December 6, 1976, May 11 and November 29, 1977, and May 26, 1978 is by this l
800350'76
s l
reference incorporated herein.
Subscribed in San Francisco, California, this 8th day of January, 1980.
Respectfully submitted, PACIFIC G.AS AND ELECTRIC COMPANY BARTON W. SHACKELFORD By Barton W. Shackelford President MALCOLM H. FURBUSH PHILIP A. CRANE, JR.
Attorneys for Pacific Gas and Electric Company By PHILIP A. CRANE, JR.
Philip A. Crane, Jr.
Subscribed and sworn to before me this 8th day of January, 1980 THEODORA COOKE
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Theodora Cooke, Notary Public in l
and for the City and County of San Francisco, State of California My Commission expires January 28, 1981 l
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3.0 OTHER MATERIALS This license request includes the storage of the neutron sources.
The Diablo Canyon reactor neutron sources consist of two primary Californium source rods and eight secondary antimony beryllium source rods. Table 3.1 gives a summary of characteristics of the neutron sources.
The neutron sources will be stored in their shielded shipping containers, in either the spent fuel pool or the new fuel storage vault. Access to the storage area will be controlled, clearly marked, and protected. The sources will first be stored in their shielded shipping containers in the Fuel j
Handling Building.. Later, they will be removed from their containers and undergo 4
final assembly. The sources will then be installed in their respective fuel assemblies for storage in either the spent fuel pool or the new fuel storage vault.
The neutron sources are sealed in their final containment rods prior to shipment to the site. The final assambly at the site consists of attaching the containment rods to their respective burnabic poison clusters in accordance with the vendors procedure. This procedure is contained in PCandE Record No. DC 663223-69
" Refueling Equipment Operating Instructions". The final assembly will be monitored by health physics personnel using the radiation control standards and procedures in Volume 7 of the plant manual. FSAR sections 12.3,12.4, and 13.1 describe the health physics program, radioactive materials safety, and qualifications of key personnel, respectively.
Prior to core loading, the spent fuel pool will be drained. The primary sources stored in fuel assemblies will be located approximately 35 feet below the floor of the fuel handling building (140' elev.). While the sources are stored in the pool, the interior of the dry spent fuel pool will be classified as a high radiation area in accordance with Radiation Control Standards and Procedures, Volume 7 of the Plant Manuals. Normal access to the lower level of the pool will be restricted due to the lack of laddsrs or stairs. If access is required to the area where the sources are stored, a Special Work Permit will be required, which will include appropriate personnel monitoring. If the fuel assemblies containing the primary sources are moved to the new fuel storage vault, the vault will be classified as a high radiation area. The only personnel access to the vault is one locked door.
If temporary shielding is used around the assemblies and/or sources, the radiation area classification will be lowered in accordance with 10CFR20.
The neutron sources will be leak tested in accordance with section 2.1 of this application just before being stored in the spent fuel pool. However, delays are anticipated which will require the sources to be kept in the pool beyond the six-month. life of the leak test. Because of the sources' inaccessibility in either the spent fuel pool or the new fuel storage vault, exemption from further leak testing is requested.
The vessel surveillance capsules described in Table 3.2 will be stored in the chemical laboratory (which is described in the Diablo Canyon Byproducts Materials License No. 04-OS134-03) until they are installed. The incore flux detectors described in Table 3.3 will be stored either in the chemical laboratory or in the new fuel storage vault until they are installed. The Table 3.2 material will be used in the reactor vessel surveillance plan described in the Diablo Canyon FSAR, Section 5.4.
The Table 3.3 catorial will be used in the incore flux mapping system described in the Diablo Canyon FSAR, Section 7.7.
Revised 5/4/77 Page 11a 1/7/80
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