ML20090J965
| ML20090J965 | |
| Person / Time | |
|---|---|
| Site: | 05000605 |
| Issue date: | 03/11/1992 |
| From: | Marriott P GENERAL ELECTRIC CO. |
| To: | Pierson R NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation |
| References | |
| EEN-9237, MFN-063-92, MFN-63-92, NUDOCS 9203180142 | |
| Download: ML20090J965 (7) | |
Text
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1 GE Nuclear Enetyy
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hiarch 11,1992 h1FN No.063 92 Docket No.STN 50 605 EEN 9237 Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Attentiu :
Robert C. Pierson, Director Standardization and Non Power Reactor Project Directorate
Subject:
Piping Design Inspections, T-'s. Analyses and Acceptance Criteria (ITAAC)
Enclosed are thirty four (34) copies of the subject ITAAC. This piping design ITAAC will be included as part of the Generic ITAAC.
Since ely, A
f; P.W. hiarriott, hianager Regulatory and Analysis Services hi/C 444, (408) 925-6948 cc: F.A. Ross (DOE)
N.D. Fletcher (DOE)
C.Poslusny, Jr.
(NRC)
D.Terao (NRC)
R.C. Berglund (GE)
J.F. Quirk (OE) 1 enn~()
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GENERIC ITAAC'S 13 PIPING DESIGN t
I 111 Descriotion:
Piping associated with hydraulic and pneumatic systems is categorized as either nuclear safety related or non safety related. Piping systems that must remain functional following a safe shutdown carthquake (SSE) are designated 4
as Seismic Category 1. Depending on the intended senice conditions and system design functions, piping is further classified as ASME Code Class 1,2. 3, or non-Code Class. NRC regulations govern piping designations and piping in the certified design may further be classified as Quality Group A,11, C, or D.
l All AllWR piping components will be designed, fabricated, installed and examined to confirm full compliance with all applicable regulatory requirements and industrial codes and standards.
13.2 Insnections. Tests. Analyset and Accentance Criteria:
Table 3.3 provides a definition of the inspections, tests and analyses, tagether with the acceptance criteria, which will be performed for AllWR piping in order to demonstrate compliance with the certitied design commitments. The information in Table 3.3 is intended to be generic and to apply to all safety related piping governed by Quality Group A, II, or C and ASME Code Class 1,2, or 3 designations. Not all of the entries in Table 3.3 apply to all piping classifications. Appropriate applicability, based on designation, will be incorporated at the time the inspections, tests, and analyses are implemented.
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Table 3.3 GENERIC PIPING DESIGN Inspections, Tests, Analpes and Acceptance Criteria Certified Design Commitment Inspections, Tests, Analyses Acceptance Criteria 4
I The piping, its appurtenances, and Inspections will be conducted of Existence of ASNIE Code required 3
its supports, shall satisfy the ASN1E ASN1E Code required documents documents and the Cixle stamps on i
Class, Seismic Category, and and the Code stamp on the the components confirms that the j
Quality Group requirements com p(ments.
piping and components have been
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commensurate with its dedgned, analyzed, fabricated, and l
classification.
examined in accordance with the applicabic requirements.
2 The piping shall be designed for a An inspection of the certified stress All ASNIE requirements shall be fatigue life of 60 years. This design report will be conducted to assure satisfied, including the cumulative shall account for the cyclic stresses that the fatigue evaluation is fittigue usage factor, which shitti he resulting from the expected consistent with the ASN1E Oxle less than or equal to 1.0.
t p: essure / temper ature cycles and requirements and with the 60 year loads in the required combinations.
design life.
For ASN1E Class I piping systems, a j
fatigue analysis will be performed j
ir accordance with ASN1E III requirements. For ASN11' Class 2 &
3 piping, ASN1E Code rules will he l
followed using a stress range reduction factor of 1.0, based on fewer than 7000 cycles. These l
fatigue analyses results shall be documented in a certified stress report.
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Pipe mounted caiuipment.c2 inspections will be conducted to The vendor designed allowables for attachment interface allow." ir confirm that the as41esigned pipe mounted equipment and loads, accelerations and stresses interfisce loa (Is, accelerations and interfacing equipment shall be met.
shall be satisfied. The loads, stresses are consistent with the The inwiler's designed allowables at accelerations, and stresses that the interfacing vendor's / constructor's - attachment imerfaces shall be met.
piping system imposes on its pipe specified hardware allowables.
f mounted equipment and on its interfaces shall be determined by analyses of the piping systems and compared to the allowable values.
These results of these analyses shall be documerited as interface i
requiremenn to assure design compatibilir.r with the equipment and interfat.cs.
4-Analytical methods shall be Inspection (review) of the certified Methods shall be in compliance with specified in a certified Design Design Specification will be all applicable regulatory Specification for each piping conducted.
. quirements.
4 system..The following analysis parameters shall be addressed:
- a. Mathematical models of piping, supports, and pipe mounted equipment.
- h. Damping coefficients.
Cut-off frequency.
c.
- d. Iligh frequency modes.
Combination of group c.
responses when multiple response spectra are used.
f.
Combination of modal results.
- g. Combination of response spectra analysis results with differential building movement analysis results.
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8 The piping system designer shall
+ Pipe routiny will be confirmed by
+The pipe routing is c onsistent with
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confirm that the as-built piping inspecting isometric drawings the as-designed routing, or is within system is consistent with the as-containing verification stamps from the tolerances allowed on the as-designed piping system, or that any field visual inspections by Quality designed drawings. The piping deviations do not :nvalidate the Control. This documentation will system has the mininmm specified design.
also confirm that no interferences dearance from all neighboring exist.
hardware.
+The exact h> cation, orientation,
- The h> cation, we, orientation of all and size of snubbers and struts; the pipe mounted components are location and size of hangers:'he consistent with :he asalesigned location and weight of valves, drawings, or are within the pumps, and heat exchangers; the tolerances allowed thereon.
location and configuration of anchors; and the location of guides and pipe whip restraints, will be confirmed by reviewing isometric drawings containing verification stamps from field Quality Control, or by taking the as-built measuremen ts.
+ Ali deviations from the as-
+ For safety class 1 ", & 3 piping, the designed condition will be required allowables in the applicable documented and evaluated. If subsections of ASME III Code shall he acceptance limits are not satisfied ir-satic fied.
the reevaluaiion, a reanalysis of the as-hailt condition will be performed, the stress report and design I
drawings will be revised, and the final stress report s.ill be certified.
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9 The piping systems, including all Inspections of Code required The essential functions of structures, necessary pipe whip restraints, shall documents and the pipe break systems, a d components sha!! not be be designed to protect against the analysis report will be conducted to pretluded by the pmtulated pipe dynamic effects assotiated with the confirm that the piping system was breaks. For those components postulated rupture of high energy designed / analyzed in compliance required for safe shuteiown, limits to and moderate energy fluid systems. with requirements that assure meet the ASME Code aquirements A pipe break analysis report shall be postulated pipe breaks will not for fauhed conditirms and limits to generated to confirm that the piping unduly impact the safety of the ensure required operability shall he system is >+cceptable for all plan t..
met. Offsite dose limits shall be satisfied.
l postulated breaks.
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