ML20234D056
| ML20234D056 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 07/01/1987 |
| From: | GILBERT/COMMONWEALTH, INC. (FORMERLY GILBERT ASSOCIAT |
| To: | |
| Shared Package | |
| ML20234D034 | List: |
| References | |
| 1811, 1811-R-04, 1811-R-4, NUDOCS 8707070085 | |
| Download: ML20234D056 (46) | |
Text
. . ..
October 1, 1973 CAI Report No. 1811 EFFECTS OF HIGH ENERGY PIPING SYSTEM BREAKS OUTSIDE THE REACTOR BUILDING CRYSTAL RIVER UNIT 3 FLORIDA POWER CORPORATION Revised:
Revision 1 - November 6, 1973 Revision 2 - February 11, 1974 Revision 3 - July 1, 1974 Revision 4 - July 1, 1987 Prepared By:
Gilbert Associates, Inc.
525 Lancaster Avenue Reading, Pennsylvania W.O. 04-4203-031 DLS Gilbert Associates,Inc.
~B707070085 870701 PDR ADOCK 050'CK)302 ,
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1 TABLE OF CONTENTS Section Title Page
1.0 INTRODUCTION
1 2.0
SUMMARY
AND CONCLUSION 1 3.0 CRITERIA 2 4.0 ANALYTICAL AND DESIGN METHODS 4 l 4.1 IDENTIFICATION OF POSTULATED BREAK LOCATIONS 4 4.1.1 Crack Breaks 5 4.2 BLOWDOWN ANALYSIS 12 i 4.2.1 Main Steam Blowdown Analysis 12 ]
4.2.2 Feedwater Blowdown Analysis 13 4.2.3 Decay Heat System Blowdown Analysis 14 4.3 COMPARTMENT PRESSURIZATION AND ENVIRONMENT 17 4.3.1 Pressurization 17 .
4.3.2 Temperature And Humdidity 19 !
4.3.3 Flooding Analysis 21 4.4 PIPE THRUST AND JET IMPINGEMENT 26 4.5 STRUCTURAL ANALYSIS AND DESIGN 28 4.5.1 Restraint Desian 28 ;
4.5.2 Unrestrained Pipe Whip 46 J 4.5.3 Investigation of Safety Class Structures 52 4.5.4 Jet Shield Desian 60 ,
I 5.0 SYSTEMS EVALUATION 63 5.1 STRUCTURE 63 5.2 EQUIPMENT 63 6.0 PROTECTION PROVIDED 67 6.1 PIPE WHIP RESTRAINTS 67 6.1.1 Postulated Break #2 In 18" Feedwater Line A 67 6.1.2 Postulated Break #2 In 18" Feedwater Line B 67 6.1.3 Postulated Breaks 44 And #5 In 18" Feedwater Line B 68 6.1.4 Postulated Breaks #3 And #4 In 18" Feedwater Line A And #3 In 18" Feedwater Line B 68 6.1.5 Postulated Breaks #2 And #4 In 10" Feedwater Line A 69 6.1.6 Postulated Break #3 In 10" Feedwater Line A 69 6.1.7 Postulated Branch Point Break #1 In 10" Feedwater Line A 70 6.1.8 Postulated Breaks #2. 3. And 4 In 10" Feedwater Line B 70 6.1.9 Postulated Break #1 In 10" Feedwater Line B 70 6.1.10 All Postulated Breaks In 6" Feedwater. Lines A And B 71 6.1.11 Main Steam Lines From Steam Generator A 71 l 6.1.12 Main Steam Lines From Steam Generator B 72 1 6.1.13 6" Main Steam Line. Containina MSV-55 72 6.1.14 6" Main Steam Line. Containina MSV-56 72a 6.1.15 Main And Auxiliary Steam Lines on 95' Elevation Of 4 Intermediate Buildina To Emergency Feedwater Pump Turbine 72a Gilbed Associates,inc.
Revised: (7-1-87) i
LIST OF FIGURES'(Cont'd) 4.4.2A PIPE THRUST TRANSIENTS,-FEEDWATER LINE BREAK AT FEEDWATER HEATER 4.4.2B PIPE THRUST TRANSIENTS, FEEDWATER LINE BREAK UPSTREAM OF CONTAINMENT CHECK VALVE 4.4.2C PIPE THRUST TRANSIENTS,'FEEDWATER LINE BREAK DOWNSTREAM OF CONTAINMENT CHECK VALVE 4.4.3A (deleted) 4.4.3B (deleted) 4.4.4 JET IMPINGEMENT MAIN STEAM SIDE BREAK.BETWEEN CONTAINMENT AND MID LINE 4.4.5 JET IMPINGEMENT FEEDWATER (FW) SIDE BREAK AT FW HEATER - NODE 4 l
4.4.6.1 BREAK LOCATION 1A - SIMPLIFIED THRUST TIME HISTORY FROM THE MAIN STEAM SIDE OF A CIRCUMFERENTIAL BREAK TURBINE DRIVEN EFW PUMP LINE
- 6" SCH 40 4.4.6.2 BREAK LOCATION 1A - SIMPLIFIED THRUST TIME HISTORY FROM THE PUMP SIDE OF A CIRCUMFERENTIAL BREAK TURBINE DRIVEN EFW PUMP LINE^- 6" SCH 40 4.4.6.3 BREAK LOCATION 1A - SIMPLIFIED THRUST TIME HISTORY FROM A LONGITUDINAL BREAK TURBINE DRIVEN EFW PUMP LINE - 6" SCH 40 4.4.6.4 BREAK LOCATION 1B - SIMPLIFIED THRUST TIME HISTORY FROM THE MAIN STEAM SIDE OF A CIRCUMFERENTIAL BREAK TURBINE DRIVEN EFW PUMP LINE
- 6" SCH 40 4
4.4.6.5 BREAK LOCATION 1B - SIMPLIFIED THRUST TIME HISTORY FROM'THE PUMP SIDE OF A CIRCUMFERENTIAL BREAK TURBINE DRIVEN EFW PUMP LINE - 6" SCH 40 ,
I 4.4.6.6 BREAK LOCATION 1B - SIMPLIFIED THRUST TIME HISTORY FROM A LONGITUDINAL BREAK TURBINE DRIVEN EFW PUMP LINE - 6" SCH 40' 4.4.6.7 BREAK LOCATION 1C - SIMPLIFIED THRUST TIME HISTORY FROM THE MAIN STEAM SIDF OF A CIRCUMFERENTIAL BREAK TURBINE DRIVEN EFW PUMP LINE
- 6" SCH 40 4.4.6.8 BREAK LOCATION 1C - SIMPLIFIED THRU3T TIME HISTORY FROM THE PUMP SIDE OF A CIRCUMFERENTIAL BREAK TURBINE DRIVEN EFW PUMP LINE - 6" SCH 40 )
4.4.6.9 BREAK LOCATION 1C - SIMPLIFIED THRUST TIME HISTORY FROM A-LONGITUDINAL BREAK TURBINE DRIVEN EFW PUMP LINE - 6" SCH 40 Gilbed Associates,lnc.
Revised: (7-1-87) v
l LIST OF FIGURES (Cont'd) '
4.4.6.10 BREAK LOCATION 2A - SIMPLIFIED THRUST TIME HISTORY FROM THE MAIN STEAM SIDE OF A CIRCUMFERENTIAL BREAK TURBINE DRIVEN EFW PUMP LINE l
- 6" SCH 40 l 4.4.6.11 BREAK LOCATION 2A - SIMPLIFIED THRUST TIME HISTORY FROM THE PUMP SIDE OF A CIRCUMFERENTIAL BREAK TURBINE DRIVEN EFW PUMP LINE - 6" I SCH 40 1
4.4.6.12 BREAK LOCATION 2A - SIMPLIFIED THRUST TIME HISTORY FROM A I LONGITUDINAL BREAK TURBINE DRIVEN EFW PUMP LINE - 6" SCH 40 !
l 4.4.6.13 BREAK LOCATION 2B - SIMPLIFIED THRUST TIME HISTORY FROM THE MAIN STEAM SIDE OF A CIRCUMFERENTIAL BREAK TURBINE DRIVEN EFW PUMP LINE
- 6" SCH40 '
4.4.6.14 BREAK LOCATION 2B - SIMPLIFIED THRUST TIME HISTORY FROM THE PUMP SIDE OF.A CIRCUMFERENTIAL BREAK TURBINE DRIVEN EFW PUMP LINE - 6" SCH 40 j 4.4.6.15 BREAK LOCATION 2B - SIMPLIFIED THRUST TIME HISTORY FROM A {
LONGITUDINAL BREAK TURBINE DRIVEN EFW PUMP LINE - 6" SCH 40 g I
4.4.6.16 BREAK LOCATION 2C AND 2D - SIMPLIFIED THRUST TIME HISTORY FROM THE I l
MAIN STEAM SIDE OF A CIRCUMFERENTIAL BREAK TURBINE DRIVEN EFW PUMP LINE - 6" SCH 40 4.4.6.17 BREAK LOCATION 2C AND 2D - SIMPLIFIED THRUST TIME HISTORY FROM THE I PUMP SIDE OF A CIRCUMFERENTIAL BREAK TURBINE DRIVEN EFW PUMP LINE - 4 !
6" SCH 40 4.4.6.18 BREAK LOCATION 2C AND 2D - SIMPLIFIED THRUST TIME HISTORY FROM A LONGITUDINAL BREAK TURBINE DRIVEN EFW PUMP LINE - 6" SCH 40 4.4.6.19 BREAK LOCATION 3A - SIMPLIFIED THRUST TIME HISTORY FROM THE MAIN STEAM SIDE OF A CIRCUMFERENTIAL BREAK TURBINE DRIVEN EFW PUMP LINE
- 6" SCH 40 4.4.6.20 BREAK LOCATION 3A - SIMPLIFIED THRUST TIME HISTORY FROM THE PUMP ,
SIDE OF A CIRCUMFERENTIAL BREAK TURBINE DRIVEN EFW PUMP LINE - 6" SCH 40 1
4.4.6.21 BREAK LOCATION 3A - SIMPLIFIED THRUST TIME HISTORY FROM A l LONGITUDINAL BREAK TURBINE DRIVEN EFW PUMP LINE - 6" SCH 40 )
4.4.6.22 BREAK LOCATION 3B - SIMPLIFIED THRUST TIME HISTORY FROM THE MAIN STEAM SIDE OF A CIRCUMFERENTIAL BREAK TURBINE DRIVEN EFW PUMP LINE !
- 6" SCH 40 4.4.6.23 BREAK LOCATION 3B - SIMPLIFIED THRUST TIME HISTORY FROM THE PUMP SIDE OF A CIRCUMFERENTIAL BREAK TURBINE DRIVEN EFW PUMP LINE - 6" SCH 40 4.4.6.24 BREAK LOCATION 3B - SIMPLIFIED THRUST TIME HISTORY FROM A LONGITUDINAL BREAK TURBINE DRIVEN EFW PUMP LINE - 6" SCH 40 Gilbert Associates,Inc.
Revised: (7-1-87) vi
1 LIST OF FICURES (Cont'd) '
4.4.6.25 BREAK LOCATION 3C - SIMPLIFIED THRUST TIME HISTORY FROM THE MAIN i STEAM SIDE OF A CIRCUMFERENTIAL BREAK TURBINE DRIVEN EFW PUMP LINE {
- 6" SCH 40 l I
4.4.6.26 BREAK LOCATION 3C - SIMPLIFIED THRUST TIME HISTORY FROM THE FUMP 4 i SIDE OF A CIRCUMFERENTIAL BREAK TURBINE DRIVEN EFW PUMP LINE - 6" SCH 40 4.4.6.27 BREAK LOCATION 3C - SIMPLIFIED THRUST TIME HISTORY FROM A LONGITUDINAL BREAK TURBINE DRIVEN EFW PUMP LINE - 6" SCH 40
)
4.5.1 SECTION PROPERTIES j 4.3.2 PARTIAL PLAN OF MAIN STEAM LINE 1/B 4.5.3 ELEVATION OF MAIN STEAM LINE AND MAT FOUNDATIONS 4.5.4 DYNAMIC MODEL OF LONGITUDINAL RUPTURE ON 24" M.S. AND THE MAT FOUNDATIONS 4.5.5 TYPICAL PIPING CONFIGURATION 4.5.6 DYNAMIC MODEL OF TYPICAL PIPING CONFIGURATION 6.1.1 RESTRAINT FWR 101 6.1.2 RESTRAINT FWR 104 6.1.3 RESTRAINTS FOR FEEDWATER LINES 6.1.4 RESTRAINTS FWR 105, FWR 109, FWR 113, AND FWR 114 ,
6.1.5 RESTRAINTS FWR 106, FWR 110, FWR 113, AND FWR 114
]
6.1.6 RESTRAINTS FWR 107, FWR 108, FWR 112, AND FWR 116 6.1.7 FEEDWATER RESTRAINT FWR 107 6.1.8 RESTRAINT FWR 112 6.1.9 MAIN STEAM RESTRAINTS MSR 100 TO 106 AND 108 TO 110 6.1.10 (deleted) 6.1.11 (deleted) 6.4.1 BARRIER TO PROTECT TRAYS #367 AND #372 6.4.2 JET SHIELD TO PROTECT VALVE AHV-1D 6.4.3 BARRIER TO PROTECT VALVES FWV-33, FWV-37F, FWV-36, AND FWV-39 Gilbert Associates,Inc.
Revised: (7-1-87) vii
LIST OF FIGURES (Cont'd) 4.5.3 ELEVATION OF MAIN STEAM LINE AND MAT FOUNDATIONS 4.5.4 DYNAMIC MODEL OF LONGITUDINAL RUPTURE ON 24" M.S. AND THE MAT FOUNDATIONS 4.5.5 TYPICAL FIPING CONFIGURATION 4.5.6 DYNAMIC MODEL OF TYPICAL PIPING CONFIGURATION 'j i
6.1.1 RESTRAINT FWR 101 6.1.2 RESTRAINT FWR 104 6.1.3 RESTRAINTS FOR FEEDWATER LINES 6.1.4 RESTRAINTS FWR 105, FWR 109, FWR 113, AND FWR 114 6.1.5 RESTRAINTS FWR 106, FWR 110, FWR 113, AND FWR 114 6.1.6 RESTRAINTS FWR 107, FWR 108, FWR 112, AND FWR 116 6.1.7 FEEDWATER RESTRAINT FWR 107 6.1.8 RESTRAINT FWR 112 6.1.9 MAIN STEAM RESTRAINTS MSR 100 TO 106 AND 108 TO 110 6.1.10 (deleted) 6.1.11 (deleted) 6.4.1 BARRIER TO PROTECT TRAYS #367 AND #372 6.4.2 JET SHIELD TO PROTECT VALVE AHV-1D i 6.4.3 BARRIER TO PROTECT VALVES FWV-33, FWV-37F, FWV-36, AND FWV-39 1
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i Gilbert Associates,Inc.
Revised: (7-1-87) vii
i tabulated in Tables 4.1.2 through 4.1.4. This tabulation shows the l pipe drawing figure number associated with each system, the i
postulated breakpoint identification number, and the thermal and the sum of thermal pressure-deadicad-seismic stresses proportioned to i
the 80% allowable limits. Additional stress due to the discharge of the safety valves is included in the sum for each of the four Main Steam Lines. The stress levels obtained do not exceed those defined q I
4 in Item c above. l Figure 4.1.1 is an isometric drawing showing the four Main Steam lines with each of the break locations circled. An isometric showing the layout of the entire Feedwater and Emergency Feedwater l
System is presented on Figure 4.1.2. The Emergency Feedwater is I primarily used for emergency conditions; hence, it is not considered for postulated pipe break locations. An isometric of the high energy portion of the Feedwater System is shown on Figure 4.1.3 with break locations circled. A plan view of the Decay Heat piping is shown on Figure 4.1.4.
Figure 4.1.1 also shows the ten breaks located on the 6" :4ain and Auxiliary Steam lines to the Emergency Feedwater Pump Turbine.
4 The ten break locations are circled and restraint locations are shown.
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Gilbert Associates,Inc.
Revised: (7-1-87)
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4.1.1 Crack Breaks Crack breaks are postulated at adverse locations as described by Pipe Break Criteria c. of Section 3.0, and are assumed to be one-hal.f the pipe diameter in length and one-half the pipe wall thickness in width.
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l Gilbert Associates,Inc.
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i rupture area. Since the actual shape of the rupture dictates the )
i flow field shape being generated, it is assumed that a typical rupture is circular and the free stream expansion of the jet is conical with an included angle of 20 . Calculations of the force on an object are determined by assuming that the dynamic pressure developed at the rupture exit is for the maximum mass flow and pressure conditions in the high energy line and is inversely j proportional to the cross-sectional area of the conical expansion being generated. The total jet force.was assumed constant along the jet path for conservatism, i.e., no steam jet decay factor included.
Figures 4.4.4 and 4.4.5 are typical plots of the dynamic pressure variation with time and distance resulting from a full Main Steam or Feedwater pipe rupture. These dynamic pressures (Q) are calculated for targets assuming a drag coefficient of 2.0, i.e., complete stagnation of the escaping fluid. j i
i
- I Main & Auxiliary Steam Lines to EFW Pump Turbine Figures 4.4.6.1 through 4.4.6.27 give a simplified' Thrust Force VS Time History for the breaks identified on the Main and Auxiliary Steam lines to the Turbine Driven Emergency Feedwater Pump. Thrust forces are given for circumferential and longitudinal breaks which are orientated parallel and perpendicular to the pipe respectively. ,
1 Gilbert Associates,Inc.
Revised: (7-1-87)
l l
l Circumferential and longitudinal breaks with circular configurations 'l were assumed to have rupture sizes equal to the internal diameter of j 1
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the SCH 40 6" Main Steam Lines. Longitudinal breaks with j I
rectangular configurations were assumed to have a rupture size with )
the following dimensions: Length = 2 (I.D.), Width = nD/8. {
l Jet configurations followed the moody cone for five equivalent diameters and then followed on angle of 10 from the rupture 4 perimeter.
Thrust forces and forces on objects in the jet path were calculated using the procedures identified in this section. The thrust forces calculated used an internal pipe pressure (P) of 1115.0 psia which is the main steam relief valve set pressure. )
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Gilbed Associates,Inc.
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Revised: (7-1-87)
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Eauipment The Turbine Driven Emergency Feedwater Pump has redundant steam supplies from.the Main Steam System.- These lines are high energy and breaks have been postulated on the 95' and 119' elevations of 4 the Intermediate Building. In areas where these breaks could effect the redundancy of the Emergency Feedwater System, jet shields have been provided.
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Gilbert Associates,Inc.
1
- 64a - ;
Revised: (7-1-87) ,
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I 6.1.12 Main Steam Lines From Steam Generator B Restraints MSR104 through MSRill are provided to protect against the possibility of unacceptable structural damage should any one of the postulated breaks 1-1 through 1-5 or 2-1 through 2-5 occur.
The Main Steam restraints are represented by the typical restraint shown in Figure 6.1.9. Main Steam restraint locations are shown in Figure 4.1.1.
6.1.13 6" Main Steam Line. Containina MSV-55 Restraint MSR-200 is provided-to protect against damaging the Main Steam isolation valves and feedwater piping, valves and conduit, .
which is located on the 119' elevation of the Intermediate Building 4
directly above MSV-55, from postulated breaks 1A and IB.
The restraint and break locations are shown on Figure 4.1.1.
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Gilbert Associates,Inc.
Revised: (7-1-87) .l j
6.1.14 6" Main Steam Line. containing MSV-56 Restraints MSR-208 through MSR-219 are provided to protect Main Steam and Air Handling Electrical conduit essential to shutdown and to prevent structural damage should any one of the postulated breaks !
2A through 2D were to occur.
The restraint and break locations are shown on Figure 4.1.1.
6.1.15 Main and Auxiliary Steam Lines on 95' Elevation of Intermediate Building to Emergency Feedwater Pump Turbine Restraints MSR-202 through MSR-207 and ASR-1 protect the redundancy of the Emergency Feedwater System from the rupture of postulated breaks 3A, 3B, 3C, and 1C as shown on Figure 4.1.1. The 6" main steam lines which supply steam to the Turbine Driven Emergency 4 Feedwater Pump are located on the Turbine Driven EFWP side of the l wall which separates the Emergency Feedwater Pumps. By restraining this piping, Emergency Feedwater piping, electrical conduit, and valves associated with both the Turbine Driven and Motor Driven EFWP's are protected from the thrust forces of the postulated breaks.
Restraint MSR-202 wil'. protect the Motor Driven EFWP discharge valves EFV-14 and EFV-33 and associated piping from postulated break 1C.
Gilbert Associates,Inc.
- 72a -
Revised: ( 7-: 87)
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_ s.l.4 Emergency Feedwater System Redundancy A jet shield study was performed"to insure that all break locations on the Main Steam lines to the. Emergency Feedwater Pump turbine, as shown on Figure 4.1.1, would not damage equipment essential to.the shutdown of the plant.
l Pipe restraints which were designed to limit pipe movement if a postulated break were to occur also were designed to. shield.
essential equipment, that was identified as being located in the path of a jet. Pipe' restraints MSR-208, MSR-209, MSR-216, MSR-218 and MSR-200 have been designed to shield equipment essential to the 4 shutdown of the plant.
EFM-1 was in the path of a jet from postulated break 1C identified on Figure 4.1.1. Pipe restraints could not be designed to provide shielding for EFM-1.so a jet shield was proposed. Because of the size of the jet shield that was required to protect EFM-1, the conduit was relocated. The proposed jet chield was very large in size and heavy in weight and would have created maintenance problems if installed.
Gilbert Associates,Inc.
.75a -
LRsvised: (7-1-87)
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@ ANCHOR j 05-@ SEISMIC DIAG. REFERENCE SH. NO.,
1050# 600*F DESIGN CONDITIONS
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ISOMETRIC COMPOSITE OF THE A!.so Available Org MAIN STE AM SYSTEM rA e Ord IN THE INTERMEDIATE & TURBINE BUILDINGS.
CRYSTAL RIVER UNIT 3 mm
{ E'Ae= FIGURE 4.1.1
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