ML20154L243

Forwards Seabrook Station Core Damage Assessment Methodology & marked-up FSAR Page 1.9-11,indicating Compliance w/NUREG-0737,Item II.B.3.FSAR Page Will Be Incorporated Into FSAR by Future Amend

ML20154L243
Person / Time
Site:	Seabrook
Issue date:	03/06/1986
From:	Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE
To:	Noonan V Office of Nuclear Reactor Regulation
Shared Package
ML20154L247	List: ML20154L243 ML20154L285
References
RTR-NUREG-0737, RTR-NUREG-737, TASK-2.B.3, TASK-TM SBN-964, NUDOCS 8603110430
Download: ML20154L243 (3)

Text

e O

e i SEABROOK STATION p4 Engineering Office Mh#bM March 6 SBN- 964,1986 Now Hampshire Yonkee Divlelen T.F. B7.1.2 United States Nuclear Regulatory Commission Washington, DC 20555 Attention: Mr. Vincent S. Noonan, Project Director PWR Project Directorate No. 5

References:

(a) Construction Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 (b) PSNH Letter, J. DeVincentis to G. W. Knighton, " Compliance with NUREG-0737: Clarification of TMI Action Plan Requirements," dated October 10, 1985 (c) NUREG-0896, Supplement No. 3, " Safety Evaluation Report Related to the Operation of Seabrook Station Unita 1 and 2," July 1985

Subject:

NUREG-0737 Task II.B.3, " Post-Accident Sampling Capability,"

Criterion (2) - Core Damage Assessment Methodology

Dear Sir:

In Reference (b), we indicated that the Seabrook Station is equipped with a Post-Accident Sampling System.

In Reference (c), in the Conclusion to Subsection 9.3.4.2, " Evaluation of Post-Accident Sampling System," with respect to Criterion (2), Seabrook was required to provide a core damage estimate procedure to include radionuclide concentrations and other physical parameters as indicators of core damage.

Enclosed herewith please find a copy of "Seabrook Station Core Damage Assessment Methodology" (Attachment 2) and marked-up FSAR Pece 1.9-11 (Attachment 1) which indicates Seabrook's compliance with NUREG-0737,

" Clarification of TMI Action Plan Requirements." The marked-up FSAR page will be incorporated into the FSAR by a future amendment.

Should you or your staf f have any questions, please do not hesitate to contact us. We do request that the acceptability of this item be reflected in

'the next supplement to Seabrook Station's SER.

Very truly yours, 8603110430 060306 PDR ADOCK 05000443 m b A PDR John eVincentin, Director Engineering and Licensing Attachments cc: Atomic Safety and Licensing Board Service List P O Bon 300 . Soobtook. NH 03874 . Tolophone (603)474-9521 lIl L

9 Dicne Cure n P ter J. Mathews, Mayce Harmon & Weiss City Hall 20001 S. Street, N.W. Newburyport, MA 01950 Suite 430 Washington, D.C. 20009 Calvin A. Canney City Manager Sherwin E. Turk, Esq. City Hall Office of the Executive Legal Director 126 Daniel Street U.S. Nuclear Regulatory Commission Portsmouth, NH 03801 Washington,.DC 20555 Stephen E. Merrill Robert A. Backus, Esquire Attorney General 116 Lowell Street Dana Bisbee, Esquire P.O. Box 516 Assistant Attorney General Manchester, NH 03105 Office of the Attorney General 25 Capitol Street Philip Ahrens Esquire Concord, NH 03301-6397 Assistant Attorney General Department of The Attorney General Mr. J. P. Nadeau Statehouse Station #6 Selectmen's Office Augusta, ME 04333 10 Central Road Rye, NH 03870 Mrs. Sandra Cavutis Designated Representative of Mr. Angie Machiros the Town of Kensington Chairman of the Board of Selectmen RFD 1 Town of Newbury East Kingston, NH 03827 Newbury, MA 01950 Jo Ann Shotwell, Esquire Mr. William S. Lord Assistant Attorney General Board of Selectmen Environmental Protection Bureau Town Hall - Friend Street Department of the Attorney General Amesbury, MA 01913 One Ashburton Place, 19th Floor Boston, MA 02108 Senator Cordon J. Humphrey 1 Pillsbury Street Senator Cordon J. Humphrey Concord, NH 03301 U.S. Senate (ATTN: Herb Boynton)

Washington, DC 20510 (ATTN: Tom Burack) H. Joseph Flynn office of General Counsel Diana P. Randall Federal Emergency Management Agency 70 Collins Street 500 C Street, SW Seabrook, NH 03874 Washington, DC 20472 Richard A. Hampe, Esq. Matthew T. Brock, Esq.

Hampe and McNicholas Shaines, Madrigen & McEachern 35 Pleasant Street 25 Maplewood Avenue Concord, NH 03301 P.O. Box 360 Portsmouth, NH 03801 Donald E. Chick Town Manager Gary W. Holmes, Esq.

Town of Exeter Holmes & Ells 10 Front Street 47 Winnacunnet Road Exeter, NH 03033 Hampton, NH 03841 Brentwood Board of Selectmen Ed Thomas RFD Dalton Road FEMA Region I Brentwood, NH 03833 John W. McCormack PO & Courthouse Boston, MA 02109

ATTACINENT 1 0

SB 1 & 2 Amendment 56 SBN-964 FSAR November 1985 products. If the review indicates that personnel could not promptly and safely obtain the samples, additional design features or shielding should be provided, to meet the criteria.

A design and operational review of the radiological spectrum analysis facilities shall be performed to determine the capability to promptly quantify (in less than 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />) certain radionuclides that are indicators of the degree of core damage. Such radionuclides are noble gases (which indicate cladding failure), iodines and cesiums (which indicate high fuel temperatures), and nonvolatile isotopes (which indicate fuel melting). The initial reactor coolant spectrum should correspond to a Regulatory Guide 1.3 or 1.4 release. The~ review should also consider the effects of direct radiation from piping and components in the auxiliary building and possible contamination and direct radiation from airborne effluents. If the review indicates that the analyses required cannot be performed in a prompt manner with existing equipment, then design modifications or equipment procurement shall be undertaken to meet the criteria.

In addition to the radiological analyses, certain chemical analyses are necessary for monitoring reactor conditions. Procedures shall be provided to perform boron and chloride chemical analyses, assuming a highly radioactive initial sample (Regulatory Guide 1.3 or 1.4 source term). Both analyses shall be capable of being completed promptly (i.e., the boron sample analysis within an hour and the chloride sample analysis within a shift).

) Response:

See FSAR Section 9.3.2. In addition, information has been provided to the NRC in the following letters:

SBN-514 (dated May 31, 1983), frondeel res[J mes /o ch d b O f clori[,coboen lo CnMd SBN-648 (dated April 16, 1984) , -and. p wk #1 "Hd 6 SBN-741 (dated Decemb9 r 18,1984})

re d<d N N *d d b w "# w/3u sasupk t'rva, 'the PASS desa n und sBN-964(d0d 6%O 6> lYib), scMiffal flw Cuc lhastoyt As,essmes.l Necch lc , Task II.B.4 Training for Mitigating Core Damage (NUREG-0737) Positions Licensees are required to develop a training program to teach the use of installed equipment and systems to control or mitigate accidents in which the core is severely damaged. They must then implement the . training program.

Response

See FSAR Sections 13.2.1 and 13.2.2. Se 1.9-11}}