ML19242D519
| ML19242D519 | |
| Person / Time | |
|---|---|
| Site: | Hartsville, Phipps Bend, Yellow Creek  |
| Issue date: | 07/13/1979 |
| From: | Benedict R Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7908150351 | |
| Download: ML19242D519 (11) | |
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UNITED STATES 5 %.,,f( L NUCLEAR REGULATORY COMMISSION Q-' A -
WASWNGTON, D. C. 20555 5
JUL 13199 DOCliT NOS: STN 50-518, STN 50-519, STN 50-520, STN 50-521 50-553, 50-554 and STN 50-566 and STN 50-56/
A PPL ICANT:
TENNESSEE VALLEY AUTh0RITY FACILITY:
HARTSVILLE NUCLE AR PL ANTS, UNITS Al, A2, B1 AND B2 PHIPPS BLND NUCLEAR PLANTS, UNITS 1 AND 2 YELLOW CREEK NUCLEAR PLANTS, UNITS 1 AND 2 SUBJE CT:
MEETING HELD ON JUNE 19,19/9 A meeting with the permittee was held in Bethesda on June 19, 1979.
The permittee requested this meeting to discuss the matters raised in the TVA letter of May 3, 1979 concerning code testing requirements for piping embedded in concrete.
A list of participants is presented in Enclosure 1.
An outline of TVA's presentation is presented in Enclosure 2.
The discussion centered about the use of Section 6.3 of ACI-318-1971, to which TVA comitted in the PSARs, for embedded pipe. TVA plans to substitute the require-ments of a proposed change to Section 6.3.2.4 of ACI-349-19/6.
The pertinent por-tions of these two codes are presented in Enclosures 3 and 4.
TNA noted (Item A of Enclosure 2) that a conflict exists between ACI-318 and the dppliCable ASME piping codes insofar as test pressures and holding times are con-cerned. F urthermore, the proper test fluid pressure response is af fected by ambient conditions which, in some cases, may change significantly during the f our-hour holding time required by ACI-318. Factors affecting the pressure response are listed in Enclosure 5.
The NRR Mechanical Engineering Branch representative, tir. Brammer, indicated that,
as f ar as the piping itself is concerned, the proposed revision would not af +ect the ASME code testing requirements which are acceptable. However, Mr. Li pinski of the Structural Engineering Branch, noted that leakage can De detrimental to the surrounding concrete and that, once embedded, the piping is uninspectable for the 40-year life of the installation.
Therefore, the embedded pipe codes are inter:-
tionally more stringent.
Mr. Lipinski also noted that the proper mechanism for accomplishing what TVA proposes is to get the codes changed appropriately rather than to take singular exceptions to portions of a code.
As a result of this discussion, TVA stated that they will:
1.
Use the proposed revision to ACI-349 rather than the existing ACI-318.
2.
Specify the ASME codes to be used for each piping system to be enbedded.
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JUL 131979
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3.
Discuss the potential ef fects on the concrete of leakage from the piping sys tem s.
4.
Discuss more fully how the ASME piping pressure limitations would be violated if ACI-318 requirements were to be i,m.
These f our matters will be discassed in amendments to the PSARs.
The staf f did not object to TVA's statement that they intend to adopt the require-ments of ACI-349-1976 (Section L.3.3) regarding pressure and temperature lii.iits for embedded piping that is separated from the concrete by sleeving or insulation.
With certain exceptions that are i'ot applicable to the present matter, the staff had earlier accepted the use of ACJ-349, as reflected in Pegulatory Guide 1.142, f or Yellow Creek. This acceptance is noted in Section 3.8 cf Supplement No.1 to the Yellow Creek Safety Evaluation Report.
TVA also indicated that there will be no emoedded pipe whose pressure or tempera-ture would exceed that penaitted by ACI-349. Therefore, there will be no need for the use of analysis in special situations as had been proposed in TVA's May 3, 1979 letter.
This fact will be noted in the letter that transmits the next PSAR am endment.
t1 vddL R. A. Benedict Light Water Reactors Branch No. 2 Division of Project Management Enclosures.
1.
Attendance List 2.
Outline of Presentation 3.
Code Comparison 4.
Proposed Revision To ACI-349 5.
Factors Af fecting Pressure Response Of A Liquid Filled Pressurized Piping System ccs w/ enclosures:
See next page E,90304
'.r. H. G. Pa rri s
.ftp ', 1979 ft. H. G. Pa rri s Vanager of Powr Tennessee Valley Authority t 00A Chestnut St reet Io m e II Cnattanooga, Tennessee 37401 ccs. Al v in H. Gutternan, Esq.
Attorney f or the Applicant Tennessee Valley Authority 400 Comrnerce Avenue Knoxville, Tennessee 37902 ft. E. G. be a s l ey Tennessee Valley Authority 400 Comrerce Avenue, W10Cl31C Knoxville, Tennessee 37902 ft. Je r ry I. Wills Tennea.;ee Va l l ey /W hori ty 400 Chestnut Street lowe r - 11 Chattanooga, Tennessee 37401 Fr. Wi l l i an Hubba rd Assistant Attorney General Supreme Court Luilding Nashville, Tennessee 37219 Leroy J. Filis Ill, Esq.
Omer. Ellis & Frabson Chancery Building 421 Charlotte Avenue Nashville, Tennessee 37219 Raymond Gi bbs, Es q.
111 Commerce Building 3 10 West Lytle Street Murfreesboro, Tennessee 37130 John I. Wo l f, tha ir man, Lsq.
3409 Shepherd 5treet Chevy Chase, t'a ryl and 20015 Dr. J. Venn Leeds, Jr.
10807 Atwell Houston, Texa s 77096 Dr. Forrest J. Ren ic k 207 Old Main Building Pennsylvania State University University Park, Pennsy'.vania 16802 690303
JUL 131979 Mr. H. G. Pa rris Mr. H.
G. Pa r r i s flanager of Poner Tennessee Valley Authority 500A Chestnut Street lo ve r 11 Chattanooga, Tennes uee 37401 ccs-Mr. Jerry E. Wi ll s Tennessee Valley Authority 303 Po:cr L'uilding Chat t a nooga, lennessee 37401 Mr. Herbert S. Sanger, Jr.
Attorney f or Applicant Division of law Tennessee Valley Authority E l l B33 C -K 40 0 U)mi.:e rc e A s e nu e Knoxville, Tennessee 37902 fr. E. G. L:e a s l ey Tennessee Valley Authority W10Cl31 C 400 Conrierce Avenue Knoxville, Tennessee a7660 Ms. Phyllis Pierce 1913 Seaver Road Kingsport, Tennessee 37660 Alan S. Rosenthal, Esq., Chairman Atomic Sa tely and Licensing Appeal Board U. S. flou i ear Feg ula tory Connission Wa shington, D. C.
20555 Richard S. Sal z,an, Chairman Atomic Safety and Licensing /ppeal Board U. S. f;uclear f:egulatory Conmission Washington, D. C.
20555 Dr. John H. fiuck Atomic Safety and Licensing Appeal Board U. S. fluclear Regulatory Conmission Washington, D. C.
20555
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's Mr. H. G. Parris le. H. G. Pa rri s r
fla na ge r o f Po ve r lennessee Valley Authority 500A Chestnut Street Tover II Chattanooga, Tennessee 37401 ccs: Herbert S. Sanger, Jr., Esq.
General Counsel Tennessee Valley Authority 400 Commerce Avenue El l B33 Knoxville, Tennessee 37902 ft. M. J. Burzynski Licensing Engineer Tennessee Valley Authority 400 Chestnut St reet Tower - II Chattanooga, Tennessee 37401 Mr. E. G. Beasley Tennessee Valley Authority W10C131C 400 Connerce Avenue Knoxville, Tennessee 37902 Mr. R. L. Luty k in, Jr.
CE Power Systras Corbustion Engineering, Inc.
1000 Prospect Hill Road Windsor, Connecticut 06095 Ivan W. 3"i th, Esq., Chairc:an Atomic Sa f ety cnd Licensing Board U. S. fluc l e a r Re g ul a t o ry Comm i s s i on Washington, D. C.
20555 ft. Lester iornblith Atomic Sa fety and Licensing Eoard U. S. fluclear Fegulatory Comnission Washington, D. C.
20555 Cr. Os c a r H. i'a r i s Atoiiic Sa f ety and Licensing Board U. S. f;uclear Pegulatory Commission Washington, O. C.
20555 690307
ENGLOSURE 1 Jul MEETING WITH HARTSVILLE P H I P P S B E N D _AN_D_ _Y.E.L.L_O_W C.R.E E K-
- i TlA J. J. Ritts E. A. Merrick N. Perry D. L. Terrill J. A. Ellis R. E. McClure J. Wills NRC - STAFF R. Lipinski H. Branmer R. A. Benedict W. F. Anderson H. Walker, ACRS Staff L1303C8
ENCLOSURE 2 yyt ; 3 343 OLTLINE OF PRESENTATION ON TESTING OF PIPING ESSEDDED ON CONCRETE I.
INTRODUCTORY REMidtrSS II.
HIESENTATION A.
Icak Testing 1.
Problems of holding test pressure for h hours Review of Mechanical Piping Codes (/diSI B31.1 and Ases) a.
and ACI Concrete Design Codes (ACI 318 and 349).
b.
Review of variable focLors influencitig the internal pressure change de:,ing a 4-hour pres::t a tese.
I Review results of neld testing of piping subassemblies c.
and co= pare to variables cited in item b above. Also, a co=parison will be made of pressure versus te: perature change in the field tests to calculated pressures versus water temperature in the pipe.
d.
Discuss additional conflict between ASME section III piping code and ACI standard concerning maximum and minimum test pressures.
Discuss use of insulation or sleeving to separate the embedd11 B.
pipe from the concrete.
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.lUf. ' 3 ftyg OUTLINE OF FRESFliTATION (Continued)
II.
IRESENTATION (Continued)
C.
Brief discussion indicating that TVA will drop the request to use analysis of stresses in the concrete for special situations.
D.
Surnarize and discuss PSAR revisions and any other necessary documentation if agreement is reached.
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ANS/ B 3 /. / - M 77 ed.
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C Conduits and pipes embedded in concretc 6.3.2.2 The temperature of the liquid, gas, cr 137.3 Hydrostatic Leak Tests vapor shall not exceed 150 F A'cI 3 # - 7G d-6.32.3 The maximum reessure to which a=y "E #'
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- 137.3.4 Required Hydrostatic Test Pressure. Piping psi above atmospheric pressure.
systems :,h211 be subjected to a hydrostatic test pres-C.3.2.4 Al!. piping and finings except cs sure so that esery point in the system is not less thaa noted in Section 6.3.2.5 shall be tested as a unit 1.5 times the design pressure,but shall not exceed th.
maximum allowa'ole test pressure of any non-isolated 6.3-Conduits and pipes embedded in concrete for leaks immediately prior to concreung. The component such as vessels, pumps or valves in the testing pressure above atmospheric pressure shall 6.3.2.4-All piping aad fittings except as noted in Section 6.3.2.5 shall be tested as a unit for leaks im be 50 percent in excess of the pressure to which system.
137.3.5 Hydrostatic Test Pressure Holding Time.
the piping and fittings may be subj.ected, but the mediatelv prior to concreting. Pressure tests shall be in minimum testing pressure shall be not less than The hydrosta.'c test pressure shall be continuously---
accordance with the applicable standard.
150 psi above atmosP eric pressure. The Pressure h
maintained for a minimum time of 10 minutesand fcr such additional time as may be necessary to conduct 6.3.3-All piping containing liquid, gas or vapor test shall be held for 4 hr with no drop in pres-the examinations for leakage, pressure in excess of 200 psi above atmospheric pres-sure except that which may be caused by air 137.3.6 Examination for Leakage. Examinations sure or temperature in excess of 150 F shall be sleeved, temperature.
6.3.2.5 Drain pipes and other piping de-for leakage shall be made of alljoints and connections.
insulated, or otherwise separated from the concrete The piping system exclusive of possible locahzed m-and/or cooled to limit concrete stresses to design al. signed for pressures of not more than 1 psi :bove stances at pump or valve packing shall show no visual lowables and to limit concrete *.emperatu,es to the atmospheric pressure need not be tc.wd as rete evidence of weeping or leaking.
following:
quired in Section 6.3.2.4.
o (a) For normal operation or any other long-term period, the temperatures shall not exceed 150 F, except for local areas which are al. awed to have increased temperatures not to exceed 200 F.
(b) For accident or any other short-term period,the temperatures shall not exceed 350 F for the interior w
surface. Ilowever, local areas are allowed to reach 5
pg 650 F from fluid jets in the event of a pipe failure.
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(c) Ifigher temperattues than given in Items (a) and Q
(b) may be allowed in t he concrete if tests are provided 3
M to evaluate the redaction in strength and this reduction w
i-b is apt. lied en the de:.ign allow ables. Esidence shall also be provided which verifies that the increased tempera-iures do not cause deterioration of the concrete either with or without load.
JUL 1.11979 ENCLOSURE.4 PROPOSED rey /stont 78 t/cf 34 p Section 6.3.2.4:
Replace existing section with the following:
All piping and fittings except as provided in 6.3.2.5 shall be tested as a unit for leaks before concrete placement.
Pressure tests shall be in accordance with the applicable piping code or standard.
Where pressure testing requirements are not specified in a code or standard, pressure testing shall meet the following requirements. (a) The testing pressure above atmospheric pressure shall be 3 percent in excess of pressure to which piping and fittings may be subjected, but minimum testing pressure shall not be less than 150 psi above atmospheric pressure.
(b)
The pressure test shall be held for 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> with no drop in pressure except that which may be caused by air temperature.
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