ML20204H669
| ML20204H669 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 03/21/1974 |
| From: | Campbell M, Jun Lee, Tenbus M GILBERT/COMMONWEALTH, INC. (FORMERLY GILBERT ASSOCIAT |
| To: | |
| Shared Package | |
| ML20204H531 | List:
|
| References | |
| SP-750-4549, SP-750-4549-00, NUDOCS 8411120348 | |
| Download: ML20204H669 (65) | |
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SP-730-4549-00 8-30-73 C0NTENTS Ites Title Page
'1:01
. Scope 1 1:02 General Information 1
.1:03 Definitions 2
-1:04 Procedure 5
'1:05 ' Documentation 16 1:06- Enferences 18 ATTACHMENTS Table 1 - Deeping Factors Figure:
Figure 1 - Single-Degree-of-Freedom Bodies of Yarying Response Frequencies
- (Page .' 1 of 1)
Figure 2 - Various Shapes of Response Spectrum Envelope Curves (Page 1 of 1)
NOTE:- Figures of Floor RESPONSE SPECTEA Envelopes will be included as required, based on the proposed location of the equipment, 1.e., the specific building (s) and elevation (s) where the l
equipment will be installed as described in the Parent Specification. These figures will be listed in the contents page of the Parent Specification.
f l
hi i
1 3-11-74
r SP-750-4549-00 8-30-73 1
1:01 Scope 1:01.1 This Specification sets forth the genera 1' criteria and procedures !
which shall be used to verify that mechanical and electrical-i, equipment for the Perry Nuclear Power Plant, Unita 1 anc 2, can meet.the performance requirements (item 1:04.4) during and following the OPERATING BASIS EARTHQUAKE (OBE) and SAFE SHUTDOWN
- _ EARTHQUAKE (SSE).
The specified aszimum ground accelerations in the horizontal J1:01.2:
and vertical directions are 0.075 g for the 9BE and 0.15 g for the SSE. The duration of the earthquake is considered to be .
20.0 seconds. '
'1:01.3 All Perry safety-related equipment has been' defined as Seismic
- Category I. The Parent Specification will specify whether the equipment will have a seismic classification. The ganaral criteria and procedures specified here are intended to verify the performance for Seismic Category I equipment.
1:02 - General Information-INFORMAT10N DEY ;
-1:02.1 Related horizontal and vertical
- floor RESPONSE SPECTRA envelopes i for the CBE and the SSE are included with the Parent Specification to which this Specification is attached. Only those floor RESPONSE SPECTRA envelopes which are to be used for the analysis and/or testing of equipment ' -
described in the Parent Specification are given.
.1:02.2 The horizontal RESPGISE SPECTRA envelopes, if not specified for use in a particular direction, shall be applicable to both East-West and North-South directions.
1:02.3 Por the analysis or testing of equipment or components which are not attached to'tha building (e.g., valves which are attached to .
piping, or components attached' to another piece of equipment, etc.) ,
see item 1:04.2 subitems 6 and 9.
1:02.4 The CWNER will audit the report specified in Item 1:05 as part l of 'an overall qualification effort.
! 1:02.5' Design of equipment, systems, and components shall also satisfy NB-3622.2, NB-3524, and NB-3112.3,Section III, ASE Boiler and Pressure Yessel Code, " Nuclear Power Plant Components," 1971, and the addenda up to and including Winter 1972 to the code.
L
'. 1:02.6 The Parent Specification shall govern if there is any conflict '
l' between this Specification and the Parent Specification.
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3-11-74
SP-750-4549-00 8-30-73 a~ 2 1:02.7' Exceptions to any part of this Specification, shall be so stated in the Proposal.
1:02.8 . The intended method (item 1:04.1, subitem 2) of verifying that the equipment can meet the performance requirements (item 1:04.4) of
, this Specification shall be submitted with the Proposal.
1:02.9 If the VENDOR intends to qualify his equipment by testing, he shall include in his Proposal, a list of the monitoring equipment that is going to be used to evaluate the performance of his equipment before,
, during, and following the test.
1:02.10 The VENDOR shall furnish the OWNER and the ENGINEER with any information that would provide a basis for reviewing the VENDOR'S .
qualifications and experience in performing seismic qualification of the equipment offered. h clude such .
This informatiliiFbIR TRATION ON
- 1. ' Previous experience in furnishing similar equipment, with seismic qualification, for noclear power plants.
- 2. Qualifications of individuals who will perform and verify the seismic qualification of equipment.
- 3. Any independent consulting or testing organization which will be retained.
4-
- 4. Description of computer programs which may be used.
- 5. Any other information which will support the competence of the
, VENDOR and seismic qualification of equipment.
/
1:03 Definitions In addition to the definitions set forth in Section 1:00 of the Parent Specification, the following definitirms shall have meanings set forth in this Item for this Specification. In some instances,
! supplementary information is furnished after'the definition to.
clarify the meaning of the term. For convenience, the definitions are arranged in alphabetical order.
[. 1. ACTIVE COMPONENTS shall mean a powered component such as a l- piece of mechanical equipment, component of the electrical supply system, or instrumentation and control equipment which acts on command to perform a design function.
i e
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SP-750-4549-00 8-30-73 3
1:03 Definitions (Cont'd)'
- 2. ASSEMBLY (ASSEMBLIES) shall mean any integrated system (s) complete with all appendages such as actors, fans, racks, piping systems, panels, and consoles which are supported as a unit by a surface having a defined seismic motion. When all the DEVICES (see subitem 5 of this Item) of a system are mounted on a support structure, the unit becomes an ASSEMBLY.
- 3. BASE EXCITATION shall mean the displacement or force causing a body to vibrate when applied to the base of the system.
This base motion is presented to differentiate from the casa the b itself. ,
- 4. DAMPING shall mean the measure of energy dissipation in a !
vibrating body. If no damping were present in an oscillating system, the vibration would continue indefinitely; however, the presence of damping causes the oscillations to decay until the motion ceases. The energy loss is due to friction, impact, joint slippage, etc. The effects of changes in structural stiffneas, geometric support configuration, and modulus of elasticity are also usually grouped under the general heading of DAMPING in current design methods. DAMPING factors to be used are listed in Table 1.
- 5. DEVICE (S) shall mean any actor (s), fan (s), valve (s), switch (es),
relay (s), sensor (s), etc., to be seismically qualified which is (are) not supported directiv from a surface having a defined i
seismic action.
- 6. FLOOR ACCELERATION (S) shall mean the acceleration (s) of a l' particular building floor (or equipment mounting) resulting from a given earthquake's motion applied to the building.
' The maximum PLOOR ACCELERATION can be read directly from the
- i floor EESPONSE SPECTRUM (see subites 10 of this Item) and I corresponds to a frequency of 33 cys.
J
- 7. NATURAL FREQUENCY (FREQUENCIES) shall mean the frequency at which a body vibrates due to its own physical characteristics t
(asss, shape) and the elastic restoring forces that are brought s
into play when the body is distorted and then released, while
' restrained or supported at specific points and distorted in a specific direction.
i.
- 8. OPEEATING BASIS EARTHQUAKE (OBE) shall mean the maximum vibratory l ground motion that could be expected to occur at the plant site l
i during the life of the plant.
Note: This OBE is not the same event defined as an OBE in the proposed Appendix A of 10 CFR 100.
s l
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SP-750-4549-00 8-30-73 4
<1:03- Definitions (Cont'd)
- 9. ?ASSIVE COMPONENT (S) shall mean a static componen::(s) such as a support or a pressure boundary which does not have moving parts.
- 10. RESPONSE SPECTRUM (SPECTRA) shall mean a plot of the responses (in terms of displacement, or velocity, or acceleration) of damped single degree-of-freedom bodies mounted on the surface of interest (i.e., on the floor. of a building for that floor's RESPONSE SPECIRUM) when that surface is responding to a given earthquake motion. The abscissa of the spectrtsa is the natural frequency (or period) of the body, and the ordinate is the
- maximum response. The RESPONSE SPECTRUM can be visualized from a series of single degree-of-freedom bodies with varying y NATURAL FREQUENCIES fixed on a moveable base as shown in Figure 1.
In this diagran, the length of the single degree-of-freedom bodies increases to the right and, therefore, the frequency decreases toward the right. To develop the RESPONSE SPECTRA, the base is subjected to a given earthquake motion and a time-history analysis is performed to determine time-history records of the mass motions (See Item 1:06, subitem 2) . These records are then used to generate the floor RESPONSE SPECTRA by plotting
- / the mar 4= tan response versus the NATURAL FREQUENCY for each of the single-degree-of-freedom bodies. The response motions can be either deflection or velocity or acceleration, since they are all related. Despite the name " floor RESPONSE SPECTRA," these curves do not represent the motion or acceleration of the floor itself, but rather the peak response of a one-degree-of-freedom body attached to the floor. The floor RESPONSE SPECTRA will be supplied by the ENGINEER.
- 11. RIGID FREQUENCY shall mean the frequency value at which the floor RESPONSE SPECTEDM approaches mari== FLOOR ACCELERATION or 33 cycles per second (eps), whichever is higher.
, .12. SAFE SHUIDOWN EARTHQUAKE (SSE) shall mean that earthquake giving rise to the mari== vibratory ground motion, which can reasonably be predicted from geologic sad seismic evidence, which could conceivably occur at the site at any time in the future. The SSE is the largest earthquake that the nuclear poaer plant is designed to withstand without functional impairment of those features necessary to shut down the reactor. maintain the plant in a safe condition, and prevent undue risk to the health and safety of the public. ~
lHFORMATION ONLY
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SP-750-4549-00 8-30-73 5
1:04 Procedure 1:04.1~ General:
- 1. The seismic qualification of equipment shall demonstrate the equipment's ability to perform its required function before, during, and after being subjected to the forces resulting from a seismic disturbance.
- 2. The seismic qualification can be accoglished by two methods which are as follows:
- a. Perform a mathematical modal analysis of the equipment.
(See item 1:04.2)
.a . T.c tir qdr m under simulated seismic conditions. , , , ,
( 5- * *- ' ' "' ')
INFORMAT1011 DNLY
- 3. Either of the two methods stated in item 1:04.1, subitems 2.-a.
and 2.-b. , or a combination of these, can be used to verify the ability of the equipment to meet the seismic requirements.
The choice shall be based on the practicality of the method for the type, size, shape, and complexity of the equipment, as well as the reliability of the conclusions. The doctamentation required by Item 1:05 shall include justification of the choice of method.
- 4. Formulation of a mathematical model for an analysis requires a large nisaber of judgements to be made. A Podel for ACTIVE COMPONENTS, such as switchgear and panels, is particularly complex because of the necessity to allow for the actions of the active elements. Consequently, such an approach to qualification any be quite difficult to justify or defend; therefore, analysis may not be a suitable method for complex equipment that cannot be modeled to predict its response. If the VENDOR wishes to perform a mathematical modal analysis of ACTIVE COMPONENTS, he shall give a description of his method l -of analysis and model in the Proposal.
t-l 5. The VENDOR shall be responsible for the proper functioning of his equipment, as defined in the Parent Specification, whether he supplies and/or tests the equipment himself or has another party supply and/or test the equipment or any parts thereof.
1:04.2 Seismic Modal Analysis:
- 1. The equipment shall be modeled as a multi-degree-of-freedom, lumped-mass system with mass-free interconnections. The model shall be used to determine the seismic response for the vertical and two horizontal directions. Other types of models 1
3-11-74 i
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SP-750-4549-00 8-30-73 6
o.
1:04.2 Seismic Modal Analysis: (Cont 'd) ,
may be used but shall be presented in the Proposal. It shall be the ~ VENDOR'S responsibility to prove and include as part of his documentation (item 1:05) that the number of mass points
. he has chosen in the seismic modal analysis to represent his equipment gives an accurate prediction of his equipments' response resulting from a seismic disturbance.
- 2. The NATURAL FREQUENCIES and mode shapes of the equipment as it will be mounted in service shall be determined (See Item 1:06, subiten 1) .
- 3. If the fundamental NATURAL FREQUENCY of the equipment (including
. the effect of the supports and attached components, if any) is greater than or equal to RIGID FRIQUENCY, the equipment ma be
- analysed statically as follows:
- a. - In the static analysis, the seismic forces on each component of the equipment shall be obtained by multiplying each lumped mass by the =n1== FLOOR ACCELERATION. The seismic force shall act on the center of mass of each component.
7 b. The seismic stress (see item 1:04.2, subitan 3.-a. for .
calculation 'of the seismic force) shall then be added to the equipment's operating stresses. See item 1:04.4 for operating requirements, load combinations, and allowable stress levels and deformations.
- 4. If the fundamental NATURAL FREQUENCY of the equipment is less than the RIGID FREQUENCY, the seismic modal analysis of all equipment shall be performed as cited in the following item 1:04.2, subitems 4-a through 4-e.
- a. The lumped mass system shall be analyzed using the " RESPONSE SPECTRA Modal Analysis" technique (See Item 1:06, subitem 1) .
No attempt is made to discaurage the use of the time history method; however, the documentation (Item 1:05) shall clearly demonstrate that the response obtained from the simulated time history is at least equal to the corresponding F response of the given floor RESPONSE SPECTRUM envelope.
- b. A stress analysis shall then be performed using the inertia
. forces or equivalent static loads obtained from the maximum accelerations of the dynamic analysis.
- c. Shears, moments, stresses, deflections, and accelerations shall be calculated on a mode by mode basis.
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SP-750-4549-00 8-30-73 7
1:04.2 Seismic Modal Analysis: (Cont'd) d.- .The system seismic response, i.e. stress, reactions, accelerations, displacements, forces, moments , etc. ,
shall be obtained by combining each modal response by the square root of the sum of the squares, except for closely spaced modes where the absolute sum of the responses shall be used. The closely spaced modes are defined as those whose frequency difference is less than 10% 'of the frequency itself. The "ENDOR shall
. include, as part of the documentation (Item 1:05), the criteria and the method he used to combine the modal seismic responses.
- a. The responses, i.e., stress, reactions, accelerations, displacements, forces, moments, etc., from the two horizontal and the vertical component seismic inputs shall be combined by taking the square root of the sum of the squares, i.e.,
Tota 1 Re.p e -
kR,; + x,i + " 1) INFORMATION ONLY Where:- Rxg is the response in the 1-direction due to the x-direction quake.
Ryt is the response in the 1-direction due to L
the y-direction quake.
R,1 is the response in the 1-direction due to the vertical-quake.
i can be x, y, or v.
- 5. Parametric studies shall be undertaken by the VENDOR to determine the range over which the calculated NATURAL FREQUENCIES of the
-equipment can vary. The parametric study shall consist of varying the parameters which are inherent in the formulation of the dynamic model to establish the range over which the NATURAL
.,: FREQUENCIES of the model can vary. Using this range and the RESPONSE SPECTRUM envelope, the andmum accelerations of the mese points in this range shall be determined.
- 6. The analysis of piping and instrumentation attached to another piece of equipment shall be performed as follows:
- a. If the fundamental frequency of the supporting equipment (including the effects of supports and contributing attachments), is above RIGID FREQUENCY, the piping or instrumentation may be considered as though attached to the building, and the floor RESPONSE SPECTRUM envelope shall
- be applied to the supported piping and instrumentation.
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SP-750-4549-00 8-30-73 8
(
, _1:04.2 Seismic Modal Analysis: (Con t'd)
NOTE: It is recomended that all supporting equipment be designed with its fundamental frequency (which shall be determined considering the effects of the attached piping, instrumentation, etc., that requires seismic analysis) above RIGID FREQUENCY, j so that the interface problems associated with item 1:04.2, subitems 6.-c. and 6.-d. can be d avoided.
'3
- b. If the fundamental frequency of the supporting equipment (including the effect of supports and contributing
- gggg-attachments) is below RIGID FREQUENCY, the Parent ee=nn=
- c. For the condition where the supporting equipment is "large" compared with those of the supported instrumentation and the attached piping, che floor RESPONSE SPECTRUM envelope shall be applied to the supporting equipment. The analysis of the supporting equipment shall include the effects (mass, stiffness, etc.) of the supported instrumentation and piping.
In addition, the supporting equipment VENDOR shall either
('- develop a new floor RESPWSE SPECTRUM envelope at the points of attachment of the supported equipment or provide the
- 1. dynamic model of the supporting equipment to the ENGINEER.
- d. For the condition where the supporting equipment is not "large" connared with those of the supported instrumentation and the attached piping, the floor RESPONSE SPECTRUM envulope shall be applied te the supporting equipment. The l
analysis of the supporting equipment shall include the effects (mass, stiffness, etc.) of the supported instrumentation l- and piping. In addition, the supporting equipment VENDOR shall provide the dynamic model to the ENGINEER. If further I- syst;en analysis shows an increased response for the
! supporting equipment, the supporting equipment shall be back-checked for the higher response.
- a. For equipment supported by different buildings or at different t elevations of the same building where differential movements L of the anchor points could occur, the stresses due to the differential movement should be calculated separately by l
applying ths worst combir.ation of the movements at the anchor points. These stresses will be superimposed on the stresses obtained from the dynamic analysis of the equipment as stated in item 1:04.2.
(
l 1
3-11-74
,-+ y, - , , - . - - - -
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. --,--3.- -
i SP-790-4349-00 8-30-73 9
1:04.2 Seismic Modal Analysis: (Cont'd) i
- 7. Tanks or Vessels:
- a. Tanks or vessels containing liquids and whose natural '
frequencies are above RIGID FREQUENCY shall be analyzed as outlined in references 2 and 4 cited in Item 1:06.
- b. For tanks or vessels containing liquids and whose natural frequencies are equal to or less than RIGID FREQUENCY, the WNDOR shall include the flexibility of the tank in the analysis. References used in the analysis shall be incitnad as part.of the documentation.
.I
- 8. The aquipment shall be analyzed for fatigue. Two hundred cycles shall be considered in the analysis and shall be applied as
- a. When the dominant frequency of the equipment lies on or INFORMATIDH ONLY
' within the widened peak (see Figure 2.1) of the floor RESPONSE SPECTEM, the initial 100 cycles shall be at the maximum amplitude loading, and the remaining cycles shall be considered at one-half of the acimum amplitude loading.
- b. When the dominant frequency of the equipment lies outside the widened peak (see Figure 2.1) of the floor RESPONSE SPECTRUM, the initial 30 cycles shall be at the maximum amplitude loading, and the remaining cycles shall be considered at one-half of the maximum amplitude loading.
- 9. The analysis of instrumentation attached to piping shall be performed as follows:
- a. The Parent Specification shall state whether item 1:04.2, subitam 9.-b. or subitam 9.-c. shall be used.
l b. If the fundamental frequency of the supporting pipe is
!, above RIGID FREQUENCY, the instrumentation may be considered
- as though attached to the piping support, and the floor l RESPONSE SPECTEM envelope shall be used to qualify the supported instrumentation.
l>
c.- If the fundamental frequency of the supporting pipe is below RIGID FREQUENCY, the Parent Specification shall specify the conditions for the dynamic analysis of the l-instrumentation.
I I 1 l 3-11-74
. . . _ - -_ . . _ . , _ . ~ . , . . . _ . . - _ . . . . _ . _ _ . . . _ . _ . _ . _ _ . _ - . - _ __
SP-750-4549-00 8-30-73 10 1:04.3 Testing Under Simulated Seismic conditions:
- 1. General: l
~
\
- a. Tests shall be performed by subjecting the DEVICES and i ASSEMBLIES to vibratory motion which simulates that to be experienced at the equipment mounting during a SSE.
- b. The test methods for simulating the vibratory motion to
, be experienced at the equipment mounting during a SSE are stated in item 1:04.3, subitem 2. If the VENDOR
- wishes to use any other method, he shall stata it in his Proposal for approval by the ENGI
- c. All ASSEBLIES shall be tested with t jiggp]nqj0N ONLY operating condition, except as described in item 1:04.3, '
subitam 1.-d. The test shall demonstrate the ability of the equipment to perform its intended function.
- d. In the case of complex ASSEMBLIES such as control panels,
, switchgear, etc., where testing the ASSEMBLIES with its DEVICES in an operating condition becomes impractical, the ASSEBLIES may be tested with the DEVICES inoperative.
' However, the test of the ASSEMBLIES shall not only qualify ths ASREMB.LTYS themselves, but also determine the motions at the BE7I S mountings in the form of the revised floor RESPONSE SPECTRA or other equivalent forms, which shall be used as input to DEVICES for their qualification tests.
In addition, the supporting equipment VENDOR shall provide the ENGINEER with those revised floor RESPONSE SPECTRA envelopes at the points of attachment of the supported DEVICES for which he is not responsible but another VENDOR is responsible for qualifying.
- a. The testing techniques described herein apply to ASSEMBLIES as well sa to DEVICES. The input to ASSEMBLIES is represented by the c,ttached floor RESPONSE SPECTRUM envelope (see item 1:02.1) . The input to DEVICES shall be as determined in item.1:04.3 subitem 1.-d.
- f. The ASSEMBLY or DEVICE to be tested shall be mounted'for the test in a manner that. simulates the intended service mounting.
3 Due to different characteristics of various driving mechanisms and the interaction between heavy equipment and the shake table, the input to a shake table may be different from the motions at the equipment mounting.
Hence, the input to the equipment shall be based on the motions at equipment mounting instead of the input to the shake table.
1 3-11-74
- v--~ tav-_yw--9 ...- 9,,- ,,-gg gm,.ew, ,-m%g.y y__-,____.,.,__,v#-,,,..,,,, ,3+ . _ , e,. ,., , s,-,-%,,.,m,.-wewmuri.-*-m- we + c - =- w ww new - m we e e e -e ee e w wewwn'-wome . -wa---ier+-
SP-750-4549-00 8-30-73 11 1:04.3 Testing Under Simulated Seismic Conditions: (Cont 'd)
- h. If the VENDOR intends to qualify the equipment by the results of a fragility test, he shall state in the ,
Proposal the results of the fragility test and give a detailed description of the method used to obtain those results.
- 1. The' vertical and horizontal inputs 1 simultaneously, unless it can be proved that the horizontal and vertical responses are uncoupled.
'j . If a sample test is performed, the Parent Specification shall state whether random sameples or systematic samples shall be chosen to prove the uniformity of products. If the in-service equipment is sample tested, it shall be proven that the sample test causes no degradation to the equipment such that the equipment would not perform its required functions during a possible future SSE or OBE.
- NOTE: A sample test is defined as one where several representative pieces of equipment are chosen from a group of identical pieces of equipment and /
are tested for qualification and are then presented
. as evidence to qualify all the other pieces of equipment in the group.
jL
- k. If the ASSE)BLY is too large to be mounted on the shake r- table, other means may be used.. These shall be presented
! in the Proposal for approval by the ENGINEER.
l h 1. The ==Muum vibrat6ry accelerations at the equipment mounting
! shall be equal to or greater than the maximum FLOOR ACCELERATION.
I- The duration of the test shall be at least 20 seconds as l: specified in item 1:01.2.
> m. Justification of Methods Used to Certify Equipment:
i t
The VENDOR shall include, as part of the documentation (Itsa 1:05), an outlise of the test method used to simulate the earthquake motion for which his DEVICE or ASSEMBLY is
~
to be qualified. The outline shall include the criteria used to establish the amplitude of the input, tne test frequencies or frequency range, the test duration, and the number of beats and the ussber of cycles per beat (sine beat test), etc.
1 3-11-74
- * -e<w+w.,. yar -.-e-,.--.-y*g.,,,--.,*e-*--*,y->.w,w,-,,w<w,,-w-----rme + e-se we - ve - g- -sw---
L SP-750-4549-00 8-30-73 12 1:04.3 Testing Under Simulated Seismic Conditions: (Cont'd)
- 2. Test Methods:
- a. Time History Test:
- A time history test shall mean a test that uses time history as input. Time history is the trace of acceleration, or velocity, or displacement as a function of earthquake time which the floor of a building or ground experiences during an earthquake.
- b. andom vibration T.st:
INFORMATION ONLY A random vibration test shall mean a test that uses a vibratory input which is derived from a random signal source. Filters, amplifiers, and other mechanisms may be used to shape and apply the input. The signal source must contain a span of frequencies over the range of interest.
- c. Sinusoidal Sweep Test:
A sinusoidal sweep test shall mean a test that uses a ,
vibratory input consisting of a sine wave of constant peak amplitude acceleration and slowly varying frequency expressed in a ntaber of octaves per unit of time.
- d. Continuous Sine Test:
A continuous sine test shall mean a test that uses as input a ntsaber of consecutive sinusoidal oscillations of l one frequency and approximately identical peak accelerations applied for a certain duration.
l e. Sine Beat Test:
p L A sine ben.t test shall mean a test that uses as input a continuous sinusoid of one frequency, amplitude modulated l
! by a sinusoid of a lower frequency. As used in this
! Specification, the amplitudes of the sinuacida represent acceleration and the modulated frequency represents the frequency of the applied seismic stimulus.
NOTE: Beats are usually considered to be the result of the summation of two sinusoids of slightly different ~
frequencies, with the frequency within the beats the average of the two, and the beat frequency as
! one-half of the difference between the two. However, as used here, the sine beats may be an amplitude
! modulated sinusoid with pauses between the beats.
b l
h-11-74
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- I. SP-750-4549-00 8-30-73 13 a
1 l':04.3 Testin's Under Simulated Seismic Conditions: (Cont'd)
- f. Decaying Sinusoidal Test:
A decaying sinusoidal test shall mean a test that uses a short time sinusoidal input of a number of consecutive sinusoidal oscillations. The amplitudes of the sinusoids represent acceleration. The initial half wave an911tude has the maximum value. The amplitude of the succeeding t
cycles of. identical frequency diminishes depending on the coefficient of damping of the test system.
3 Short-time Sinusoidal Test:
A short-time sinusoidal test shall mean a test that uses as input a naber of consecutive sinusoidal oscillations of one frequency sad approximately identical peak acceleration applied for not less than two cycles and for a shorter duration than three times the time constant (s) of the DEVICE or ASSDBLY under test. The half wave amplitude is a measure of acceleration.
- 3. Guide to the Selection of Test Methods:
- a. The basic input to the equipment mounting is represented by the attached floor RESPONSE SPECTRIL? envelope. If other criterica, e.g. time history or the power spectral density function, is used, it shall be r.roven that the ,
response of the equipment is at least equal to that obtained from the floor RESPottSE SPECTRUM envelope.
- b. RESPONSE SPECTRA Methods:
The basic acceptance criterion of this method is that the test response spectrum derived from the motions at equipment mounting encompasses the attached floor RESPONSE SPECTRUM i
envelope at all frequency ranges. This requirement may be relaxed as described in item 1:04.3 subitem 3-b-(3) .
RESPONSE SPECTRA Methods are as follows:
(1) Ploor RESPGISE SPECTEDM envelope with actual narrow band width and - tificially widened peak area:
The sine-beat method or other single frequency test method may be applied in this case. The number of cycles per beat depends on the amplification factor defined as the ratio of the peak floor RESPONSE SPECTRUM envelope value to the floor RESPONSE SPECTRUM envelope value at RIGID PREQUENCY. A short pause, Y ;
1 3-11-74
y.
SP-750-4549-00 8-30-73 1:04.3 - Testing Under Simulated Seismic Conditions: (Cont'd) 0 about 2 seconds, between beats is allowed to prevent significant response motions from being superimposed.
The total number of beats can be determined from the duration of test (refer to item 1:02.6), the duration of each beat, and the pause between beats. Een the actual narrow bandwidth is as shown in Figure 2.1 with a center frequency of fe, the test frequency should be chosen at fe, fc Afe, fc + 2Afc, etc., until the entire widaned peak be covered, where Afc corresponds to a 1/3 to 1/6 oc{ e) (i.e., a ratio whose value lies between 21 /3 and 2 interval. It is necessary that the test RESPONSE SPECTRUM encompasses the actual
] narrow band at each test frequency, and the envelope of all test RESPONSE SPECTRA covers the artificially widened peak. The curvs - wn in Figure 2.1 is a
- l typical case for equipment at higher elevations inside a building. For a floor response curve with more than
. one widened peak, as shown in Figure 2.2, the multiple sine-beats with frequencies at fel and fc2 should be applied simultaneously in order to encompass the multiple peak narrow band curve. Similarly, the test frequencies should also be applied at the increments of Afel and Afc2 to cover the entire widened peak area.
(2) Floor RESPONSE SPECTEUM envelope with broad bandwidth:
The broad band curve in Figure 2.3 is typical for equipment on the foundation or at low elevations.
- , In this case, multiple frequency input naat be applied simultaneously such that the test RESPOFSE SPECTRUM encompasses the floor RESPONSE SPECTRUM envelope over all frequency ranges. This multiple frequency input can be generated by the summation of sine beats or the superposition of harmonics with random phase angles or other techniques. The test RESPONSE SPECTRUM should be calculated at intervals close enough to prove that i no drastic change occurs in between intervals.
(3) Equipment with dominant modes:
r.
For ASSEMBLIES or DEVICES where the proper functioning of critical parts and the dynamic responses can be shown i
to be dominated by well defined modes, multiple sine beat input may be used. As shown in Figure 2.4, the l
i l
1 3-11-74 l
v - - .: m : - . - _ -
f SP-750-4549-00 8-30-73 15 1:04.3 Testing Under Simulated Seismic Conditions: (Cont'd) test RESPONSE SPECIRUM should enclose the floor RESPONSE SPECTRUM envelope with a bandwidth at least 1/3 octave (21 /3) .at each of the modal frequencies. For complex equipment it is very difficult to prove that the proper functioning of critical parts and the dynamic responses are dominated by well defined modes. Therefore, the methods defined in item 1:04.3, subitem 3.-b.-(1) , and item 1:04.3, subitem 3.-b-(2) , are preferred to this method.
- c. Time History Method:
{
(1) The time history used should be the one that simulates '
the floor RESPONSE SPECTEDM envelope instead of the time history response at each mass point from the structural dynamic analysis, because the single time history response does not cover all the ranges of the parameters used in the parametric study.
(2) In essence, this method is similar to the one described in item 1:04.3, subitem 3.-b.-(2) . However, it is easier to justify that the test RESPONSE SPECTRUM encompasses the floor RESPONSE SPECTRUM envelope than that the time history at equipment mounting is equal to the defined time history within a justifiable tolerance level,
- d. Power Spectral Density Punction Method:
When the power spectra density function is used as input to equipment mouncing, it shall be proven that the response of the equipment is at least equal to that obtained from the l~ floor RESPONSE SPECTRUM envelope. The random input motions can be generated either by superposition of harmonics with
! random phase angles and amplitudes determined from the power spectral density function or by passing white noises through a filter with the characteristics of the defined power spectral density function. The Monte-Carlo technique shall be applied to ensure that the response of the equipment using the power spectral density function is at least equal to that obtained from the floor RESPONSE SPECTRUM envelope.
- 1:04.4 Ope.rzting Requirements, Load Combinations, and Allowable Stress Levels and Deformations:
- 1. Mathematic Modal Analysis of ACTIVE and PASSI7E COMPONENTS:
- a. The load combinations that shall be used to analyze the ACTIVE and PASSIVE COMPONENIS shall be found in the Parent Specification.
l-3-11-74 ra-e't g- - --e,-- -
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_ _ ._ _ __ . . . . . , . _ m .
SP-750-4549-00 8-30-73
.s 16
.1:04.4 Operating Replrements, Load Combinations, and Allowable Stress Levels and Deformations: (Cont'd)
- b. Resultant stresses in the equipment shall not exceed the allowable stresses as set forth in the design standards specified in the Parent Specification.
- c. The maximum deformation in the equipment shall not exceed those allowed by the design standards specified in the Parent Specification.
- 2. Testing of ACTIVE and PASSIVE COMPONENTS:
The. performance requirements of ACTIVE and PASSIVE COMPONENTS during and/or after an OBE or SSE shall be found in the Parent Specification.
1:05 Documentation 1:05.1 General: INFORMATION ONLY l
- 1. . The documentation for the equipment shall demonstrate that the equipment asets its performance requirements before, during, and after being subjected to the seismic accelerations for '
which the equipment is to be qualified in accordance with the seismic criteria of this Specification and the Parent Specification.
i.
i 2. It shall be the responsibility of the VENDOR to have his reports l
independently reviewed and CERTIFIED that they comply with the l requirements of this Specification and the Parent Specification.
y 3. Deo copies of the reports and a certification of the independent review shall be forwarded to the ENGINEER, and .two copies to the OWNER at least one month prior to fabrication, unless specified to the contrary in the Parent Specification.
1:05.2_ Analytical Data:
If proof of performance is obtained by analytical ansna the report ,
should be presented in a step-by-step form which is readily auditable by persons skilled in such analysis. A suggested format for such a
!- presentation is as follows:
- 1. Scope:
l The equipment shall be identified, a brief description of the overall problem shall be included, and the scope of the specific l problems covered by these calculations shall be given.
'r 1
3-11-74
_ _ . . _ . __. _. .- . _ _ . _ . . _ . . _ _ _ _ _ _ _ _ . . _ _ . _ . , _ , ~ , _ _ .
, ) .- 8-30-73 17 1:05.2 Analytical Data: (Cont'd)
- 2. Summary of Results or
Conclusions:
- a. A brief summary of the results, including the NATURAL FREQUENCIES, obtained from the calculations shall be included.
- b. A concise statement of the conclusions reached as they relate to the stated purpose shall also be given.
~3. Load Criteria and Assumptions:
l The loads considered in the calculations and any as'sumptions
- l- ande in converting the load criteria to actual' load combinations used for calculations shall be given.
D '- " ** 4 ' ^-17 * =
a.
INFORMATION ONLY
.o The asthods of calculations used which include the analytical equations and their development from basic principles or authoritative reference shall be stated.
.b. Included also shall be any asstaptions made as to boundary or initial conditions and any limitations on the applicability
' of the calculations performed.
.c. If a computer program is being used, the documentation which established its validity shall be specifically referenced. The validity of a program can be established
, -by one of the following procedures:
(1) The computer program is a program that is available -
to the public domain and that has had a history of j- use to justify its applicability and validity without further demonstration and that is recognized by the ENGINEER as being applicable and valid.
t (2) The cosputer program's solutions to a series of test
- - problems, with accepted results, have been demonstrated
'j' to be substantially identical to those obtained by a compvier program as described in item 1:05.2, subitat 4.-c.-(1). The test problems should be demonstrated to be similar to or within the range of applicability for the getual design problems analyzed
'S with the computer program to justify seceptability of the program.
4 1
3-n -74
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SP-750-4549-00 8-30-73 18 1:05 .2 . Analytical Data: (Con t 'd) ~
- 5. Calculations:
- a. The actual. design calculations c.nd any figures, sketches, or mathematical models shall be presented.
- b. When the calculations are being performed on a conputer, the identification of the modes and members in the computer input shall correspond with those shown on the sketch of the mathematical model.
- c. When possible, loads, resultant forces , moments, strasses, and deformations shall also be presented on the model.
- 6. Certification of the report in accordance with item 1:05.1.
a 1:05.3 Test Data:
If proof of performance is obtained by testing, the report shall contain.the following:
- 1. Equipment identification.
- 2. Equipment specification.
- 3. Test facility:
HF0pmil0HONLY
- a. Location.
b.. Test equipment.
- 4. Test method.-
- 5. Test data (as a minimum: date, frequency, amplitudes, duration
.of test, input acceleration and direction, and whether the input accelerations are applied simultaneously or sepatrately).
- 6. Results and conclusions (particularly NATURAL FREQUENCIES, if. required in testing, and maximum accelerations) .
- ; 7. Certification of the report in accordance with item 1:05.1.
1:06 References The following references are applicable to this Specification:
- 1.- -Biggs, John M.; Introduction To Structural Dynamics,
-McGraw-Hill, 1964.
- 2. Bisane, John A. & Associates; Earthquake Engineering For Nuclear Reactor Facilities, Engineers, San Francisco,1971.
1 3-11-14 ge g y.- pqs sv.- +..- y *s. .'.-- ~-,r-.g-w mi-- +- - -ev-s---,,w-u -
-w---w ---------w =w-- e- ---* - - ' ---P-- +
SP-750-4549-00 8-30-73 19 1:06 References (Cont'd)
- 3. Guide for Seismic Qualification of Class I Electric Equipment for Nuclear Power Generating Stations, Joint Committee on Nuclear Power Standards, . Institute of Electrical and Electronics Engineers, Std. 344, 1971.
4.- Housner, G.W.; Dynamic Pressures'en Accelerated Fluid Containers, Bulletin of the Seismological Society of America, Volume 47, pges 15-35,1957.
- 5. Thomas, T.H.; Nuclear Reactors and Earthquakes, Lockheed Aircraft Corporation, Sunnyvale, California, August,1963, TID 7024.
lHFORMATION ONLY
/
F 1
. 3-11-74
-n -. --
- e -
.1,
. TABLE 1.
DAN ING FACTORS ** ,
4 PERCENT OF CRITICAL DAMPING ***-
, COMPONENT OR OPERATING BASIS- SAFE SHUTDOWN l STRUCTURE EARTHOUARE EARTHQUAKE
. 1. Equipment and large diameter l piping ' systems, pipe diesster . *.
greater than 12 in. 2 3 i 2. Sas11 diameter piping systems, I diameter'less than or equal i .to 12 in. 1 2 i
- 3. Weldad steel structures 2 4
! 4. Bolted steel structures 4 N 7 I
j 5. Prestressed concrete structures 2 Q 5 Y
- 6. Reinforced concrete structures 4 g 7
- 7. Underground concrete tunnels
- 5 5 i i 8. Soil Viscous damping 10
=4 10 ,
i i
- Finite element model that includes rock-lining interaction. ,
i l ** If the maximum combined stresses due to static, seismic, and other dynamic loading
ug are significantly lower thus the yield stress and 1/2 yield stress for SSE and m a ao un i ,8 1/2 SSE, respectively, in any structure or component, damping values lower than those 5 D d,7 ?
'j' specified in Table 1 should be used for that structure or component to avoid *N U '
y underestimating the amplitude of vibrations or dynamic stresses. {rU[
.,. v.
i.
Reference:
AEC Regulatory Guide 1.61, October, 1973. e N ,
l 6 o
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FIGURE 1 Page 1 of 1 SP 7504549@
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3-11-74
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=t INFORMATION ONLY LOAD LIST FOR DIESEL GENERATORS LOADING Stehor. Time of Type of Starting Running Cumulative Load & Voltage KVA & p.f. KVA & p.f. Total-Running Block No. . Application i
$L Em. Start-Sig. -10 sec. (Diesel-Generator unit start, accelerate, and ready for loading)
No .' = 0 ' t < 0 sec. 2-1500 KVA (70 Amperes, maximum, inrush - per transformer)
Load Center Transformers No. 1 0 sec. Misc.-480V 115 1.00 115 1.00 3
Motors-480V 2,425 0.30 373 0.83
}- \
2,063 KVA Motors-4kV 10,238 0.20 1,575 0.90
'" Motors-4kV 5,265 0.20 810 0.90 2,923 KVA i- No'. 2 ,5 sec.
Motors-480V 325 0.30 50 0.83 i :50 sec. Motors-480V 1,320 0 . '"' 203 0.83 3,126 KVA No. 3 No. A 60 sec. Motors-480V 234 0.32 36 0.83 r
a Motors-4kV 4,378 0.20- 675 0.90 3,706 KVA Motors-480V 0.30 75 0.83 4,303 KVA
' g No. 5 90 sec. '788 7
Motors 4kV 3,'393 0.20 522 0.90 Motors-480V 910 0.30 140 0.83 4,443 KVA No. 6 100 sec.
,d --
-/(Explanatory notes for diesel-generator loading sequence table.
h Yr. 1.- The engine shall be capable of starting and accelerating a future load. The b * -future load shall be equal to the~ difference between actual nameplate rating
, and tabulated cumulative total running KVA,;but not greater than the tabulated l . load of Load Block No. 1. r
- 2. The future load of Note 1 may be substituted for any of the tabulated load i- blocks, No. I through No. 6, and the tabulated load blocks considered as being B . increased from 6 to 7. The time interval between load blocks shall be identical to the time interval allowed prior to the addition of the substituted l (future) load. -.
- 3. Tabulated motor loads are pump loads.
- 4. ~Short time loads, such as, motor operated valves, have been deleted from the !
E cumulative total running for all steps beginning with Step 4.
- 5. .For the purpose of item 2:09.5, subitem 2a, a plot of the test load versus time l
'shall equal or"excee Pa plot of cumulative total running versus time, i.e., the l
l test load application rate shall exceed the cumulative total running load application rate.
,L
( 12-15-75 u
I >
f Y). '
( i i"
.. .- . . . : . .- . 't 7 ..
~
, , . a d i .L . r , - -x_
Pags 1 of 8 ASME III Designed Components ATTACHMENT A b For Active Class 2 & 3 Pumps, Non-Active Class 2 & 3 Pumps Class 2 & 3 Pressure Vessels
.1. 00' . Seismic Requirements and Combined Loading Design Limits
- 1. Seismic Qualification Testing and Analysis
- s. 12ut (component) shall be seismically qualified in -
accordance with SP-750-4549-00. The option of testing or seismic analysis shall be left to tne VENDOR: however, complete documentation and certification required by SP-750-4549, Item 1:05, shall be supplied by the VENDOR.
The method, seismic analysis or testing, proposed for ,
qualifying the equipment shall be stated in the Proposal.
If ar.alysis is proposed, a detailed description of the method shall be incorporated with the VENDOR'S proposal.
- b. If a seismic modal analysis is performed, the information requested in Item 1:04.2, Subitam 6-c of. attached Specification
'SP-750-4549-00 shall'be supplied.
y ~
- c. The VENDOR'shall supply the dynamic models and preliminary analysis of his equipment to the ENGINEER for incorporation in the piping analysis as set forth in SP-750-4549-00.
- d. The (component) and all attached accessories shall be considered as ove piece of equipment in designing to the seismic conditions.
~
- e. The attached Floor Response Spectras (Figures , , and
) shall be used for seismic analysis or testing of the 77 equipment. The (component) will be located in the
- ~
building at a floor elevation of ft.
- 2. Design Load Combinations and Allowable Stress Limits
- a. The (component) is defined as an (active or
, non-active class pump (or) class pressure
,s vessel. This equipment shall be designed for-the following load combinations per US/AEC Regulatory Guide 1.48.
(1). Normal:
. Fluid loads (Press. , Temp. , Flow)
.(reference section:in Specification where performance
- 7. .. ,
data is given)
}f; '
+ Deadweight
+ Nozzle loads (see Subitem 2b)
(2) Upset:
Fluid loads (Press., Temp., Flow)
<. ~
+ Deadweight
+ Nozzle loads (see Subitem 2b)
+ Loads associated with an earthquake of intensity 12-15-75
_ _ -.y..- - - - - - _ . - -.
, - _ . - . + . . . , , . .
Pcgs 2 cf 8 ASME III Designed Couponents AT'IACEMENT A equivalent to Operating Basis Earthquake (OBE)
(intensity _per Subitem le)
(3) Emergency:
Fluid loads (Press., Temp., Flow)
+ Deadweight
+ Nozzle loads (see Subitem 2b)
(4) Faulted: (Use for Active Class 2 & 3 -Pumps and for Class 2 & 3 Pressure 1*essels)
Fluid loads (Press., Temp., Flow) under faulted conditions.
+ Deadweight
+ Nozzle loads at faulted plant condition (see Subitem 2b)
+ Loads associated with an earthquake of intensity equivalent to Safe Shutdown Earthquake (SSE) (intensity per Subitem le) o=
INF05ATION ONLY (4) Faulted: -(Use for Non-Active Class 2 & 3 Pumps)
Fluid loads (Press., Temp., Flow) under normal operating conditions
+ Deadweight
/ + Nozzle loads at faulted condition (see Subitem 2b)
+ Loads associated with an earthquake of intensity equivalent to Safe Shutdown Earthquake (SSE)
(intensity per Subiten le)
- b. Nozzle loads (1) Nozzle loads dua to connecting piping are specified below. The z axis is oriented with the nozzle centerline, i
L the y axis mutually perpendicular, and the x axis horizontal. The VENDOR is requested to supply at a minimum the capability to withstand the forces and moments listed below. The VENDOR is additionally requested to supply. maximum permissible nozzle loadings in the attached Equipment Data Form.
(2) Each (component) shall be designed to withstand piping forces and moments at their nozzles as defined below:
(*)
! J, + g .t 1 e
u (b) F= (Fx) + (Fy) + (Fz) (vector sum of the VENDOR'S allovable nozzle forces) y I
t i
12-15-75
ASME III Dasignsd Compan nts Pags 3 of 8 ATTACH' MENT A j.
(d) Mo; Fo = Piping design loads as per the following table:
Piping Design Loads Normal Upset- Emergency Faulted, Connection
, i ( inch diameter)
~
To Kips No in-Kips 1
.etc..
L, (Note to Engineer!! Fill in blanks for all connections to' piping systems that
~
will see pipe stresses; i.e., vent and drain connections generally do not see
,. pipe stresses).
, c. Allowable Stress Limits:
S The VENDOR shall design all (component) pressure
, retaining components and supports to sustain the and==
- f. combined loads outlined in Subites a without exceeding the cllowable stress limits given in table 1, 2 and 3.
? 3. Assurance of Operability Certification for Active Pumps k'
- a. In addition to compliance with the design limits specified above, the VENDOR shall provide assurance of operability verification and certification for the pump-motor assembly 4 as required by Regulatory Guide 1.48. Operability of the
/ equipment is defined as being able to perform the safety l
- , function under all design load combinations. The assurance of operability may be verified by one of the following methods:
(1) Test (a) An individual pump, selected as a full or reduced scale prototype pump, may be tested in the shop, provided the test conditions imposed are equivalent to the combined plant conditions which the pump is expected to withstand at the time when the " active functon is required.
(b) An individual pump, selected as a full or reduced scale prototype pump, may be tested partially (a) in the rehop under those test conditions as limited by the test facility (e.g., pressure and temperature loading) and
' (b) in a testing laboratory for simulated seismic ,
/ excitation loadings. Such a test program should be supplemented by analysis as' required under test program
' (a) above.
12-15-75 n .; . . . - . . . . . . . . . . . . .
. . - , . . ,......m. , , . . - . . . - . _ , _ . . . . , ..,._,~.____....~._.m-_,,_.,,_,,,_,, .,_~,y,,.-. - . , , - . . . , , , . _ . . .
..i e
.ASME III Dssignsd Comptnznto Paga 4 of 8 m
ATTACIDfENT A 1
+ (2) Analysis f If~the pump including all accessories is designed and proven, either by test and/or an accepted analytic method, to have.a fundamental frequency greater than 33Hz, analysis 1 is acceptable for assurance operability. The assurance l of operability shall be conducted with combined loads defined j in subitem 2a. '
Although analysis as defined above _is acceptable, testing is !
^
the preferred method for the following: l e '(a) Assurance that the component's natural frequency is ;
g - ter t m m z.
INFORRIATION ONLY (b) Assurance of operability (ref. item I above).
(3) Pumps that can be demonstrated to be equivalent to a prototype pump, which has successfully met the test requirements of a pump operability assurance program, may be exempted from testing provided (a) the test results of the prototype pump
- ' are documented and available and (b) the loading conditions for the exempted pump are equivalent to or less than those
. imposed during testing of the prototype pump.-
(4) _ The prototype pump may_ be selected from a' group of similar pumps which will be used in the plant. A prototype pump used in one nuclear power plant qualifies as a prototype pump for another plant provided the system operating conditions of both plants, and pump loading-conditions at te time when the
" active" function is required are equivalent.
7 ,
b.- The. prototype that has undergone testing shall be disassembled, inspected, and certified to be within acceptable manufacturing l
tolerances prior to. actual service application.
- c. The VENDOR shall prepare a proposed design bases describing the methods and procedures that are proposed to verify the assurance l
l _
of operability under all design loading combinations. It shall include a description of any mathematical modesi analysis, test procedures, etc.- The proposed design basis shall be brief yet with sufficient information to define a design basis for the I component supdied. This proposed design basis shall be submitted with the Proposal.
- d. The VENDOR shall prepara and provide a final report certifying the assurance of operability and design requirements. This report shall contain'all final analysis and test results that
. demonstrate pump operability under all loading combinations.
s l'
- 12-15-75
^
I' ,
-.-n,-n- - - , v-..,,--- ---.,,n,,,-. , , - , , - ~ , .
~
r-ASME III Drsigned Compan:nto Paga 5 of 8 ATTACHMENT A OR 3.~ Pressure Retaining Integrity for Pressure Vessels and Non-Active
-Pumps s.- Proof of compliance for pra.ssure retention integrity shall be established for the (component) subject to the
"- Combined Loadings referenced in subitem 2a. Analysis is acceptable to establish design pressure retention integrity.
The analysis is to be independently reviewed, and a detailed analytic report documented for the OWNER'S review, conument, and file retention.
- b. If a similar analysis has been previously completed for an identical (component), the previous analysis will y e be acceptable-provided: ,
,, (1) Results are documented and available for review.
(2) The combined loads for the previous (component) were squal or greater than those specified in subitem 2
'- of this Specification.
c.- The VENDOR shall prepara proposed design bases describing the e methods and procedures that are proposed to satisfy the requirements of pressure retaining integrity of each (component) under all combined loads. They shall include a description of any t-mathematical models, analysis, test procedures, etc. The proposed j design basis shall be submitted with the Proposal.
INFOMIATION ONLY l
12-15-75
3 %
{ .,,,.:.
4 t
ASME Code Class 2 & 3_ Vessels t
i Table 1 1
Imad Combinations and Allowable Stress Limits:
Stress Limits for Pressure Retaining (Component, j Ioad Combination' per Reaulatory Guide 1.48) Structural Supports t a. Normal Pa 1-1.108 (1) ASME B&PV Code Section Pm + Pb < 1.65S III Subsection NF i
l
j c. Emergency Pm i 1.10S ASME B&PV Code Section j Pm + Pb i 1.65S III Subsection NF l d. Faulted Pa < 1.50S ASME B&PV Code Section j
Pm + Pb d 2.25S III Subsection NF 4
i
.i NOTES:
! m.m i (1) S = Allowable Stress from ASME B&PV Code Section III 3 I
Pb = Primary Lending Stress from ASME B&PV Code Section III agg Pm - Primary Membrane Stress from ASME B&PV Code Section III O i 1 n
i
?>
ay
! a. - o.
U O o E
- i E Q ,
- i
t Active Class 2'& 3 Pumps-Table 2 i . ,
1 Ioad Combinations and Allowable Stress Limits:
Stress Limits for Pressure
' Retaining Pump Components Stress Limits'for
.Ioad Combination (per Rea. Guide 1.48) Structuul Stipports
- a. Normal- (1) ASME B&PV Code,Section III, Pm i 1.0S 4 Pa + Pb < 1.50S Subsection NF s e
- b. Upset ASME B&PV Code,Section III, Pm i 1.0S j Pm + Pb $ 1.50S Subsection ~UF i i Emergency ASME B&PV Code,Section III,
, ; c. Pm 1 1.0S j Pm + Pb i 1.50S _
Subsection NF i
Faulted Pm i 1.0S, E ASME B&PV Code,Section III, J
- d. q j , Pm + Pb i 1.50S g subsection NF
.E NOTES:
l (1) S = Allowable Stress from ASME B&PV Code Section III .
j Pb = Primary Bending Stress from ASME B&PV Code Section III Q j Pm = Primary Membrane Stress from ASME B&PV Code Section III E 4
O
! E j G P" 7 A 4 %g>
i, u n f W O
- y l
i 1
l t
f Y l 5
-n -
.s .
t Non-Active class 2 & 3 Pumpn-
~
f Table 3 -
i ,
Load Combinations and Allowable Stress Limits:
, ;~
i Stress Limits for Pressure Retaining Pump Components. Stress Limits'for load Combination p er Rea. Guide 1.48) Structural Supports I
l a. Normal Pm i 1.10S (1) ASME'B&PV Code, Section'III, Pa + Pb < 1.65S Subsection NF
- l j . b. Upset .Pa < 1.10S ASME B&PV Code,Section III,
- Pa + Pb < 1.65S Subsection NF j
- c. Emergency Pm < 1.10S ASME B&PV Code,Section III.
Pm I Pb < 1.65S Subsection NF i
j d. Faulted Pm <1.2S ASME B&PV Code,Section III, J Pm + Pb < 1.8S
~
Subsection NF
!. E m
NOTES: O N
1 (1) S Pb
= Allowable Stress from ASME.B&PV Code Section III a'rimary Bending Stress f rom ASME B&PV Code Section III E
p{
=
3 Pm = Primary Membrane Stress from ASME B&PV Code.Section III amm
, samm h
E A$l 4
C C a p; j
i 4 U
E a o
f
4 i
l 1
1
)
ij i
y' . _ .
- Page 1 of 10
. ASME III Designed Components 3- ATTACHMENT B ,
1
~
For Active and Non- Active Class 1, 2, 3 Valvas 6-1.00 _ Seismic Requirements and Cea ined Loading Design Limits:
ill'~
- 1. - Seismic Qualification Testing and Analysis ~
Each valve assably (including actuator and accessories) shall withstand the inertial load caused by an Operating Basis Earthquake
.. (OBE) and Safe Shutdown Earthquake (SSE).- The actual loadings
. imposed by the OBE and SSE shall be determined in accordance with
, the attached Specification SP-750-4549-00 with *.Le following exceptions.
lc" ' Ifmitations or additions:
,; . a. Each valve assembly shall be designed to withstand vibratory or oscillatory actions in any direction, due to a seismic-event equivalent to 10 cycle sine beats at 3.0g input acceleration for all frequencies from 2 to 30 cys. Any seismic testing (sine beat or other) shall utilize an input having a spectral response no lower than the sine beats herein specified. Input' accelerations of less than 3.0g's maximum shall not be used unless approved by the ENGINEa.'
These 3.03 accelerations shall be uset in lieu of the levels given'by the Floor Response Spectra Curves.
- b. The seismic analysis shall determine that the fundamental frequency of the valve (including actuator and accessories) is greater than 33 Hz.
- c. When valves are furnished with a chain and chainwheel, as required by the Valve and Specialty List.-the seismic analysis
- _._ , shall consider this device to be part of the actuatory. ihe VENDOR shall suggest a method of stabilizing the chain or any suggest a non-metallic. material for the chain designed to minimize the impact force the chain will have upon surrounding
[, equipment, when subjected to the OBE or SSE.
- l. 2. Design Load Combinations and Allowable Design Limits l-
- a. The valve classification (safety class, active or non-active) is listed in the Valve and Specialty List. All valves shall be designed for.the following load combinations per US/AEC Regulatory Guide 1.48.
(1) harmal:
Pressure and Temperature at design conditions
+ Deadweight'
+ Valve end loads
- & ads due to fluid motion (flows given on the Valve and Specialty List)
@ ads due to velve actuation I
12-15-75 y,- , , - W ,y,, , , , , , - ww,,w. ,-y - , , , , , - - , . . , , ,<--,w,m,..w ,,---,-,,w-.r.-.-v,.,,.,-w..-,-w,..
A-kr. ASME III Designed Components '
ATTACHMENT B
( 2) Upset:
~ Pressure and temperature at /saign conditions
+ Deadweight-
+V41ve end loads
. + Loads due tc fluid motier (flows given on the Valve and Specialty List)
+ Loads due to valve actuation
, + Loads associated with an earthquake of intensity equivalent to operating basis earthquake (OBE) (intensity per
_ item 1).
(3) Emergency:
Pressure and temperature at design conditions
-+ Deadweight
+ Valve end loads
+ Loads due to fluid motion (flow given on the Valve and Speciality. List).
+ Loads due to valve actuation (4) Faulted: INFORMATION ONLY Normal plant conditions (Reference 2.a.1. above) e- +Ioads assocated with an earthquake of intensity equivalent to safe shutdown earthquake (SSE) (intensity per item 1).
+ Dynamic loads due to the faulted plant condition.
4
- b. Valve End Loads:
The stresses in Safety Classes (Code Classes) 1, 2, and 3 valves caused by pipe reactions shall be those calculated by the method of NB-3545.2(b) of Section III of the Code. Axial,
.. bending and torsional load effects to be used for the analysis of mechanical loading qualification shall be so calculated.
L The material of connecting pipe necessary to determine these pipe reactions will be given on the Valve and Specialty List.
- c. The design pressure and temperature for each valve is given on the Valve and Specialty List.
- . d. The dynamic loads due to the faulted plant condition will be given on the Design Specification, if applicable.
- e. Allowable stress limits or pressure-. temperature ratings.
! In accordance with US/AEC Regulatory Guide 1.48, Code Class l 1 valves may be designed by analysis or by standard / alternate
+ design rules. Class 2 and 3 valves shall only be designed for pressure-temperature limitations.
(1) Class 1 valves designed by analysis l.
If the VENDOR chooses to provide Class 1 valves designed i by analysis, Tables 1 sud 2 shall be referenced for 12-15-75
- ,, ,-,._y....,._.y,,#...
, ,.y ,m. - ,,,,,,.,,,__%-,,%. ,yw,yw,,,..,,,,,,w,,.,_my.,,~w
Pass 3 of 10 ASME III Designed Components ATTACHMENT B i
~~-
- maximum allowable stresses when the valve is subject l to the combined loadings referenced in item 2.
(2). Class 1 valves designed by standard or_ alternate design l
. rales, i If the VENDOR chooses to provide Class 1 valves designed by standard or alternate design rules, Tables 3 and 4 shall be referenced for the maximum pressure rating i limitations when the valve is subject to the combined loadings referenced in item 2.
(3) The VENDOR shall design the ClassqqnMvATlotltONLY va e a Fj to-the maximum pressure rating limitations referenced in Tables 3 and 5 when the valve is subjected to the ,
- combined loadings referenced in item 2.
p
~
- 3. Assurance of Operability Certification for Active Valves:
- a. In addition to compliance with the design limits specified above, the VENDOR shall provide assurance of operability verification and certification for the active valves under all pl.2nt loading combinations as defined in AEC Regulatory Guide 1.48. Method of test or analysis to verify operability
/ . shall consider the structural interaction of the entire assembly (valve and actuator). The assurance of operability may be verified by one of the following methods:
(1) Test (a) An individual valve, selected as a full or reduced scale prototype valve, may ba. tested in the shop, provided the test conditions imposed during the demonstration of valve opening and/or closin3 are equivalent to the combined plant conditions which the valve is expected to withstand at the time 7.-~
when the " active" function'is required.
(b) An individual valve, selected as a full or reduced scale prototype valve, may be tested in the shop under test cc 3ditions which simulate separately each of the plant loadings which the valve is expected to withstand in combination during valve opening and/or closing.
Such a test program should be supplemented by analyses which demonstrate that the individuct test loadings are sufficiently higher than the plant loadings, to provide adequate margins for assurance of operability under combined loading conditions. In addition, the analyses should demonstrate that the strains in critical component parts of the valve under individual test loadings are greater, by a substantial margin that. those which the valve may experience under the combined plant loading conditions.
12-15-75
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aM Pags 4 cf 10 ASME III Designed Components ATTACHMENT B (2) Analysis If the valve assembly including all accessories is designed and proven, either by test and/or an accepted analytic method, to have a fundamental frequency greater than 33 Hz, analysis is acceptable for assurance of operability. The assurance of operability shall be
- ' " conducted with combined loads defined in item 2.
Although analysis as defined above is acceptable, testing is the preferred methsd for the following:
(a) Proof that the component's natural frequency is greater than 33 Hz.
l, .(b) Assurance of operabi1XEJ r SWEP l,
(3) Valves that can be demonstrated to be equivalent to a prototype valve, whic has successfully met the test
- requirements of a valve operability assurance program.
9-may be exempted from testing provided:
]. (a) The' test results of the prototype valve are
-documented and available, and (b) The loading conditions for the exempted valve are b equivalent or less severe to those imposed during testing of the prototype valve.
The prototype valve us.y ba salected from a group of einilar
- j. valves which will be used in the plant. A prototype valve
/- used in one nuclear power plant qualifies as a prototy a valve for another plant provided the system operating conditions of both plants, and the valve loading conditions at the time when the " active" function is required are equivalent.
b._ The valve that has undergone assurance of operability testing shall subsequently be tested to demonstrate proper operation
- t. after the mechanical load testing by being actuated to the fully open and closed position 3 times without exceeding the specified operating force or' normal actuating power of the
~
valve actuators.
- c. The VENDOR shall prepara proposed design bases describing the methods and procedures that are proposed to satisfy the requirements of operability of each valve under all design loading combinations. They shall include a description of any mathematical models, analysis, test procedures, etc.
The proposed design bases shall be brief yet with sufficient information to define a design bases for each valve. These proposed design bases shall be submitted with the Proposal.
12-15-75
Prgs 5 cf 10 ASME III Designed Components ATTACHMENT B l
'/
- d. The VENDCR sh.111 prepare and provide a final report supporting the assurance of operability and design requirements. This report shall contain all final analysis and test results that demonstrate valve operability under all loading conditions.
- 4. Pressure Retaining Integrity for Non-Active Valves
- a. Proof of complitnce for pressure retention integrity shall be established for the valves subject to the combined loadings referenced. Analysis is acceptable to establish design pressure retention integrity. The analysis is to be independently reviewed and a detailed analytic report documented for the OWNER'S review. comment and file retention.
- b. If a similar analysis has been previously completed for an identical valve, the previous analysis will be acceptable
provided:
- (1) Results are documented and available for review.
L (2) -The combined loads for the previous valves wer equal or greater than those specified in this specification.
- c. The VENDOR shall prepara proposed design bases describing the
/ methods and procedures that are proposed to satisfy the requirements of pressure retaining integrity of each valve under all Combined Loads. They shall include a description
'~
of rmy mathematical models, analysis, test procedures, etc.
y The proposed design basis shall be submitted with the Proposal.
~
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) +
Load Combinations and A110wsble Stress Limitst j Imad Combination Stress Limits for Pressure Retaining Components
- a. Normal P, t Pb + Q 1 3.0 Sa (1)
{ P, < 3.0 Se i
P, + Pb + P,+ Q + F < Sa i amma
, b. Upset Pm +Pb + Q < 3.0 Sa 2g l P,< 3.0 Sm g l
Pa +Pb+P e +Q+F<Sa N g
l c. Emergency P, + Pb + Q.< 3.0 Se p j F,< 3.0 Se ,,,
{ P, + Pb + P,+ Q + F < Sa O
l d. Faulted P, + Pb + P,+ Q < 3.0 Sm Q P,< 3.0 Sm P, + Py + P,, + Q + F 1 Sa M l Stress Limits pe ASME III subarticle NB 3222, 3223, 3224, 3225.
7 NOTES: (1) P , = Primary general membrane stress (can be interchanged withg P = primary local 7 l membrane stress) *!
G =
S P Primary bending stress cn
- v. b P = Secondary expansion stress P.,
Q* = Secondary membrane plus bending stress s F = Peak stress Sa = Stress intensity Sa = Alternating stress due to fatigue i
l
1 Non-Active Class I Valves Desianed by Analysis.
t Table %
4 Imad Combinations and A110wsble Stress Limits:
Load Combination Stress Limits for Pressure Rereinina Components i
- a. Normal P, + Pb + P,+ Q < Sa (1)
, Pe-< 3.0 Sm
) P, + Pb+#e+ 9 + # < 8* - D myy i b. Upset C3
- Pa +Pb+P +e Q < 3.0 Sa g j i P, < 3.0 Se l P, + Pb + P,+ Q + P < Sa 5 i
J c. Emergency P=-< 1.2 Sm
""*I N
1
- C3 P < 1.8 Se = 1.5 Sy 2 PL + P,i 1.8 Se = 1.5 Sy Q J. Paulted W Limits per Section NB-3225 P M
j Stress Limite per ASME III, subarticle NB-3222, 3223, 3224, 3225.
NOTES: (1) P, =
Primary general membrane stress (can be interchanged with gP = primary local y membrane stress)
L u
P b
.= Primary bending stress 5*
4
}
4 u
P, =
Secondary expansion stress u
- Q =
Secondary membrane plus bending stress E 1 P =
Peak stress ~
j Se =
Stress intensity
- l Sa =
Alternating stress due to fatigue Sy = yield stress
]
j F ,
Active Class I Valves Designed by Standard or Alternate i Desian Rules and Active Class II and III Valves i I Table 3 Load Combinations and Allowable Stress Limits:
I Load Combination Pressure Ratina Limitation
- a. Normal Valve Pressure / Temperature i Pr (1)
- b. Upset Valve Pressure / Temperature i Pr i
- c. Emergency Valve Pressure / Temperature i Pr
, d. Faulted Valve Pressure / Temperature i Pr i
Stress Limits per US/AEC Regulatory Guida 1.48 i
NOTES: = The primary pressure rating corresponding to the maximum transient l (1) Pr j -temperature for each plant condition as specified in Section III i
of the ASME B&PV Code Tables NB-3531-1 to NB-3531-7 for Code Class l 1 valves or as specified in NC-3511 and ND-3511 for Code Class II j and III. valves, respectively.
> =
m O
G ::c m b E $ 1
- 2. 2:=
o
. = m
>d 1 M 1
l O i 2 i r i "4
i::c . ,
Non-At:tive Class I Valves Desianed by Standard or Alternate Desian Rules v i Table 4 Load Combinations and Allowable Stress Limits:
1 Imad Combination Pressure Ratina Limitation
- a. ' Normal Valva Pressure / Temperature < l.10 Pr
_ (1)
! b. . Upset Valve Pressure / Temperature < 1.10 Pr
- c. Emergency Valve Pressure / Temperature < 1.20 Pr
- d. Fculted Valve Pressure / Temperature < 1.50 Pr ,
i Stress Limits per US/AEC Regulatory Guide 1.48 1
- NOTES
- (1) Pr =
The primary pressure rating corresponding to the maximum transient temperature for each plant condition as specified lo Section III of ,
l' the ASME Eciler and Pressur- Vessel Code, Tables NB-3531-1 to NB-3531-7, for Code Class I valves.
i 1 2 .
! "Tl :
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} Y E 'o ,
i G 3> A 4
4 v --I. . .
j o j g .
i :am '
i I""'
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i
t s \ .
Non-Active Class II & III Walves
! i Table 5 y Load Combinations and Allowable Stress Limits:
Pressere Rating Limitation i Imad Combinations
- a. Normal Valve Pressure / Temperature i 1.10 Pr (1) l > b. Upset Valve Pressure / Temperature i 1.10 Pr
- c. Emergency Valve Pressure / Temperature i 1.10 Pr-4
- d. Faulted Valve Pressure / Temperature i 1.20 Pr 1
1 1
l Strecs Limits per US/AEC Regulatory Guide 1.48 I
NOTES: (1) Pr - The primary pressure rating corresponding to the maximum transient
]
temperatura for each plant condition as specified in Section III of the ASME B&PV Code, NC-3511, and ND-3511 for Code Class TI and III 4 valves, respectively.
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