ML20091J683
| ML20091J683 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 06/01/1984 |
| From: | Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE, YANKEE ATOMIC ELECTRIC CO. |
| To: | Knighton G Office of Nuclear Reactor Regulation |
| References | |
| SBN-661, NUDOCS 8406060093 | |
| Download: ML20091J683 (4) | |
Text
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o PUBLIC SERVICE su a swim rasiae=<as omw.
Wyof New Hampshire 1671 Worcester Road Framingham. Massachusetts 01701 (617) - 872 8100 June 1, 1984 SBN - 661 T.F. B7.1.2 United States Nuclear Regulatory Commission Washington, D. C. 20555 Attention:
Mr. George W. Knighton, Chief Licensing Branch No. 3 Division of Licensing
References:
(a) Construction Permit CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444
Subject:
Response to SER Outstanding Issue #9; Fracture Toughness of RCPB and Secondary System Materials (5.2.3, 10.3.6)
Dear Sir:
In response to the subject SER Outstanding Issue as it relates to the fracture toughness of the main steam and feedwater systems, we have enclosed a revised version of FSAR Section 10.3.6.1.c.
This revised FSAR section addresses the issue delineated in Safety Evaluation Report Section 10.3.6, namely, "The applicant should provide a technical rationale justifying the waiving of fracture toughness testing of ferritic steel components of the main steam and feedwater systems."
1 The enclosed FSAR revision will be included in OL Application Amendment 53.
Very truly yours, YANKEE ATOMIC ELECTRIC COMPANY
/
John DeVincentis Engineering Manager Enclosure Atomic Safety and Licensing Board Service List cc:
l 0406060093 840601 PDR ADOCK 05000443 90!
E PDR lt \\
o William S. Jordan, III, Esquire Brentwood Board of Selectmen Harmon & Weiss RED Dalton Road 1725 I Street, N.W. Suite 506 Brentwood, New Hampshire 03833 Washington, DC 20006 Roy P. Lessy, Jr., Esquire Office of the Executive Legal Director Edward F. Meany U.S. Nuclear Regulatory Commission Designated Representative of Washington, DC 20555 the Town of Rye 155 Washington Road Robert A. Backus Esquire Rye, NH 03870 116 Lowell Street P.O. Box 516 Calvin A. Canney Mancehster, NH 03105 City Manager ity Hall Philip Ahrens, Esquire 126 Daniel Street Assistant Attorney General Portsmouth, NH 03801 Department of the Attorney General Augusta, ME 04333 Dana Bisbee, Esquire Assistant Attorney General Mr. John B. Tanzer Office of the Attorney General Designated Representative of 208 State House Annex the Town of Hampton Concord, NH 03301 5 Morningside Drive Hampton, NH 03842 Anne Verge, Chairperson Board of Selectmen Roberta C. Pevear Town Hall Designated Representative of South Hampton, NH 03842 the Town of Hampton Falls Drinkwater Road Patrick J. McKeon Hampton Falls, NH 03844 Selectmen's Office 10 Central Road Mrs. Sandra Gavutis Rye, NH 03670 Designated Representative of the Town of Kensington Carole F. Kagan, Esq.
RFD 1 Atomic Safety and Licensing Board Panel East Kingston, NH 03827 U.S. Nuclear Regulatory Commission Jo Ann Shotwell, Esquire Assistant Attorney General Mr. Angie Machiros Environmental Protection Bureau Chairman of the Board of Selectmen Department of the Attorney General Town of Newbury One Ashburton Place, 19th Floor Newbury, MA 01950 l
Boston, MA 02108 l
Town Manager's Office Senator Gordon J. Humphrey Town Hall - Friend Street U.S. Senate Amesbury, Ma.
01913 Washington, DC 20510 (Attn Tom Burack)
Senator Gordon J. Humphrey l
1 Pillsbury Street Diana P. Randall Concord, NH 03301 70 Collins Street (Attn: Herb Boynton)
SEabrook, NH 03874 Richard E. Sullivan, Mayor Donald E. Chick City Hall Town Manager Newburyport, MA 01950 i
Town of Exeter i
10 Front Street Exeter, NH 03833 l
t
o s
SB 1&2 Am nd;;nt 48 FSAR January 1983 Design Criterion 51, and found to be acceptable.
(See SER for Containment Boundary).
c.
The main eam and feedw-er piping between
> steam generators and t containment pe trations is fabric-ed from ASME SA155, gra KCe,d, Class material or ASME 06, Grade B, seamless erial.
The nil ducti ty temperature fr NUREC 0577 Table 4.4 (T
+
1.3 7) is F for the SA106 erial and 390F for the S 5 material.
O The Pc tssible Minimum Se vice Temperature for th e materials is 300F) from Figu. NC-2311(a)-1 of ASME or 970F for (TND
+
y SA 6B material and 6 F for SA155 material.
ie minimum service mperature for the ain steam lines is re icted to a hydrostatic test temperature 1000F.
The feedwate piping between the at m generators and the cont n-
[
ment penet tions is fabricated f m ASME SA106 Grade B, no alized
/g n.a t e r ia l The Permissible Min' m Service Temperature f. this 0Y
"*t0ri E8 (TNDT + 300F) fr Figure NC-2311(a)-1 of ME III, or 970F The minimum service emperature for the feed er piping is re tricted to a hydrosta c test temperature of 1 F.
Since neither the m.
steam nor the feedwat lines will be pressurized at te ratures at or below t TNDT, impact te ing was not required y the design specific on.
This is i ompliance with NC-2310 o ASME III, Summer, 197 addenda.
48 10.3.6.2 Materials Selection and Fabrication All Class 2 and 3 pipe, valves and fittings used in the steam and feedwater systems are fabricated from materials that are listed in Appendix I of Section III of the ASME Code.
The following materials are used for Class 2 and 3 service:
Main Steam Feedwater SA-106, Grade B and C SA-106, Grade B SA-155, Grade KCF70 SA-234 SA-234 SA-105 SA-105 SA-193, Grade B7 SA-193, Grade B7 SA-194 Grade 7, 211, 4 or 3 SA-194, Grade 7, 211, 4 or 3 SA-312, Type 304 10.3-8 L
l INSERT FOR PAGE 10.3-8 L
[
c.
~ The main steam system pipe and fittings inside containment were
_All fabricated from the materials listed in Subsection 10.3.6.2 below.
welded joints were examined radiographically to ensure minimum weld defects.
Impact testing of this material was not considered necessary, since the maximum nil ductility transition temperature for these materials (conservatively taken from NUREG-0577 as 970F considering the thickness adjustment) was below the minimum service temperature of 1000F established for the hydrostatic test fluid temperature.
The feedwater system pipe and fittings inside containment and outside containment up to the check valve beyond the isolation valve were
~
fabricated from the materials listed in Section 10.3.6.2 below. All welds were examined radiographically to ensure minimum defects. The piping material, SA-106, was heat-treated to improve impact properties.
Impact tests were performed on seven of the eight heats of piping material and met code requirements at the minimum emergency feedwater injection temperature of 500F.
f 1
1 d
.