ML17221A420

Forwards Request for Addl Info Needed to Continue Review of 870612 Submittal Re Expanding Spent Fuel Pool Storage Capacity.Response Requested by 871016

ML17221A420
Person / Time
Site:	Saint Lucie
Issue date:	09/21/1987
From:	Tourigny E Office of Nuclear Reactor Regulation
To:	Woody C FLORIDA POWER & LIGHT CO.
References
TAC-65587, NUDOCS 8709250405
Download: ML17221A420 (5)

Text

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~'eptember 21, 1987 Docket No.:

50-335 Nr. C. 0.

Moody Group Vice President Nuclear Energy Florida Power and Light Company Post Office Box 14000 Juno Beach, Florida 33408

SUBJECT:

RE(UEST, FOR ADDITIONAL INFORMATION (TAC NO. 65587)

In order for us to maintain out review schedule, your response is requested by October 16, 1987.

He are also prepared to meet with your staff to discuss the responses to expedite our review.

The reporting and/or recordkeeping'equirements contained in this letter affect fewer than 10 respondents; therefore, OMB clearance is not required under P.L.96-511.

Please contact me at (301) 492-9786 if you have any questions concerning this letter.

Sincerely,

/s/

E.

G. Tourigny, Project Manager Project Directorate II-2 Division of Reactor Projects-I/II Fnclosure:

As stated cc w/enclosure:

See next page DISTRIBUTION:

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09/g i /87 In conducting our review of, your, June 12, 1987 submittal relating to expanding the spent fuel pool storage capacity at the St. Lucie Plant, Unit No. 1, we have determined that we will need additional information identified in the enclosure to continue'oui review.

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Woody Florida Power 5 Light Company St. Lucie Plant CC:

Mr. Jack Shreve Office of the Public Counsel Room 4, Holland Building Tallahassee, F'lorida 32304 Resident Inspector c/o U.S.

NRC 7585 S. Hwy'AIA Jensen

Beach, Florida 34957 State Planning 5 Development Clearinghouse Office of Planning 5 Budget Executive Office of the Governor The Capitol Building Tallahassee, Florida 32301 Harold F. Reis, Esq.

Newman 5 Holtzinger 1615 L Street, N.W.

Washington, DC 20036 Norman A. Coll, Esq.

'cCarthy, Steel, Hector and Davis 14th Floor, First National Bank Building Miami, Florida 3313l Administrator Department of Environmental Regulation Power Plant Siting Section State of Florida 2600 Blair Stone Road Tallahassee, Florida 32301 Mr. Weldon B. Lewis, County Administrator St. Lucie County 2300 Virginia Avenue, Room 104 Fort Pierce, Florida 33450 Mr. Charles B. Brinkman, Manager Washington - Nuclear Operations Combustion Engineering, Inc.

7910 Woodmont Avenue

Bethesda, Maryland 20814 Jacob Daniel Nash Office of Radiation -Control Department of Health and Rehabilitative Services 1317 Winewood Blvd.

Tallahassee, Fl orida 32399-0700 Regional Administrator, Region II U.S. Nuclear Regulatory Commission Executive Director for Operations 101 Marietta Street N.W., Suite 2900 Atlanta, Georgia 30323

RE(UEST FOR ADDITIONAL INFORMATION ST.

LUCIE 1 SPENT FUEL STORAGE POOL RPB 01 Provide the following information:

Sources in the S ent Fuel Pool Mater 2.

Provide a description of fission and corrosion product sources in the spent fuel pool (SFP) water from:

(a) introduction of primary coolant into SFP water, (b) movement of fuel from the core into the pool, and (c) defective fuel stored in the pool.

Include a listing of the radionuclides and their concentrations (expressed in pCi/mL) expected during normal operations and refueling.

The radionuclides of interest should include 66Co

60C0,

>34CS, and

>37Cs.

Airborne Radioactive Sources 3.

Provide a description of radioactive materials that may become airborne as a result of failed fuel and evaporation (e.g.,

sKr, and H, respective-ly).

The radionuclide description should include calculated or measured concentrations expected during normal operations and during refuelings.

Miscellaneous Sources of Ex osure Address the effects of more frequent replacement of demineralizer filters on cumulative dose equivalent if this is a factor that results from the modificati on.

RPB ¹2 Dose Rates from Fuel Assemblies Control Rods and Burnable Poison Rods b.

Provide a description of the dose rate at the surface of the pool water from the fuel assemblies, control rods, burnable poison rods or any miscellaneous materials that may be stored in the pool.

Additionally, provide the dose rate from individual fuel assemblies as they are being placed into the fuel racks.

Information relevant to the depth of water shielding the fuel assemblies as they are being transferred into the racks should be specified.

If the depth of water shielding over a fuel assembly while it is being transferred to a spent fuel rack is less than 10 feet, or the dose rate 3 feet above the spent fuel pool (SFP) water is greater than 5 mR/hr above ambient radiation levels, then submit a Technical Specification specifying the minimum depth of water shielding over the fuel assembly as it is being transferred to the fuel rack and the measures that will be taken to assure that this minimum depth will not be degraded.

Address the dose rate changes at the sides of the pool concrete shield walls, where occupied areas are adjacent to these walls, as a result of the modification.

Increasing the capacity of the pool may cause spent fuel assemblies to be relocated closer the the concrete walls of the pool, resulting in an increase of radiation levels in occupied areas.

Please evaluate this potential problem.

RPB ¹3 Dose Rates from SFP Mater Provide information on the dose rates at the surface of SFP water resulting from radioactivity in the water.

Include:

(1) dose rate levels in occupied areas and along the edges and center of the pool and on the fuel handling crane; (2) effects of crud buildup; and (3) based on refueling water activity, the dose rates before, during, and after refueling.

RPB ¹¹ Dose Rates from Airborne Isoto es Based on the source terms, provide the dose rates from submersion and dose commitments from exposure to the concentrations of Kr and H.

RPB ¹5 Dose Assessment from Modification Procedures Discuss the manner in which occupational exposure will be kept ALARA during the modification.

Include the need for and the manner in which cleaning of the crud on SFP walls will be performed to reduce exposure rates in the SFP area.

2.

3.

4, Discuss vacuum cl eaning of SFP floors if divers ar e used and the distribu-tion of existing spent fuel stored in racks to allow maximum water shield-ing to reduce dose rates to divers.

Describe plans for cleanup of the SFP water to minimize radioactive contamination and to ensure fuel pool clarity and underwater lighting acceptance criteria to help ensure good visibility.

Discuss underwater radiation surveys that will be made before any diving operation.

These surveys should be performed before or after any fuel movements or movements of any irradiated components stored in the pool.

l State your intent ta equip each diver with a calibrated alarming dosimeter and personnel monitoring dosimeters, which should be checked periodically to ensure that prescribed dose limits are not being exceeded.

6.

Discuss any preplanning of work by divers as required.

7.

Discuss your provision for surveillance and monitoring of the spent fuel pool work area by Health Physics personnel during the modification.