ML20028F285
| ML20028F285 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 01/21/1983 |
| From: | Ventura J BALTIMORE GAS & ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML20028F273 | List: |
| References | |
| REF-GTECI-A-36, REF-GTECI-SF, TASK-A-36, TASK-OR NUDOCS 8301310339 | |
| Download: ML20028F285 (28) | |
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CALVERT CLIFFS NUCLEAR POWER PLANT UNITS 1 & 2 JOB 11865 REPORT OF CONTROL OF HEAVY LOADS RESPONSE TO FRC REVIEW JANUARY, 1983 TASK 05094 Comprising I. Introduction II. Responses to Open Items III. Tables IV. Appendicies V. Figures Study Approved By:
9Preparer V* #- 1 hate 21 1923 n } 7yh./.,( Y m 2L 19Eb Group Supervisor i ate l , .b/* ,
$l 83 J. C. Ventura Date Project Engineer 2 01310339 830125 PDR ADOCK 05000317 P pop
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INTRODUCTION This submittal is issued in response to the items discussed in the October 25, 1982 meeting held in your office with NRC, BG&E, Franklin Rea:srch i Center (FRC). WESTEC, and Bechtel representatives present.
The FRC review of our NUREG-0612 six month submittal was discussed in detail in that meeting.
The body of this transmittal consists of our responses to items identified during the meeting as requiring resolution to complete our Phase I Neavy Loads submittal. The information is presented with reference to the numbering in the FRC technical report dated April 27, 1982.
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I RESPONSES TO OPEN ITEMS Section 2.1.1 Overhead Heavy Load Handling Systems-
- Open Item - Provide clarification for deletion of systems to be excluded from Table 1 " Overhead Handling Systems which must Comply with NUREG-0612".
Response - As discussed in our October 25, 1982 meeting, our nine month submittal as referred to below, was intended to provide the necessary justification for deletion of many of the load handling systems. Table A provides the necessary statements and references to assure proper NUREG-0612 system exclusion in accordance with the requirements of Section 2.1.2 of the December 22, 1980 NUREG implementation letter.
Section 2.1.2 Safe Load Paths Open Item - Verify that crane operators and signalmen are familiar with required load paths.
Response - Both crane operators and signalmen are made aware of the requirement of load paths during crane operator training. Load paths are also attached directly to the
, controlling procedures for review prior to and use during the' l
physical load movement. Operators and signalmen will be required to signoff the appropriate procedure prior to a lift
! to indicate that paths have been reviewed.
Page 3
O Section 2.1.2 (Cont.)
- Open Item - Verify that load paths have not changed following six month submittal.
- Response - Attached is a copy of our updated Neutron Shielding Framework load path. This path has been incorporated into the appropriate procedures.
Section 2.1.3 Load Uandling Procedures
- Open Item - Clarify that all load handling procedures have been updated to meet NUREG requirements.
- Response - As of the conclusion of our present Unit 2 outage, all Unit 2 procedures for the previously identified heavy loads have been issued to meet the NUREG-0612 requirements. ' All Unit 1 procedures have previously been re-issued for NUREG-0612.
Section 2.1.4 Crane Operator Training Open Item - Verify that crant operators are trained in accordance with all sections of ANSI B30.2.
- Response - Calvert Cliffs crane operator trai6ing program 1
incorporates ANSI B30.2 in its entirety.
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Section 2..., Special Lifting Devices
- Open Item - Discuss measures to be taken to assure continued compliance with ANSI N14.6.
- Response - The structural design evaluation results presented in our August 22, 1982 transmittal assure that the original design of the special lifting devices complied with ANSI N14.6 requirements for factors of safety.
We have, in addition, initiated a non-destructive examination (NDE) program on the Reactor Vessel Head Lift Rig and the Upper Guide Structure Lift Rig which will require periodic liquid penetrant examinations of the lifting shackles on these devices in accordance with paragraph 5.3.1.(2) of ANSI N14.6.
Based on design evaluations on the cranes and lift rigs for NUREG-0612 which verified compliance with ANSI design standards I we consider these shackles to the " weakest link" in each of the lifting devices as they are the single load transmitting element between the crane hook and the device.
Further, requirements for both pre-use visual inspection for gross structural integrity and a detailed inspection following mishandling of any device the latter being a procedural requirement at Calvert Cliffs - are standard operations at our facility, i
We conclude that this examination program ensures continued confidence in these devices. Refer to Appendix'B for additional discussion of this item and for an item by item summary of our position on ANSI N14.6.
Page 5
Section 2.1.5 (Cont.)
- Open' Item - State measures taken to upgrade slings for the Instrumentation Plate Assembly lifting devices.
- Response - Slings will be replaced with slings of the required design factor of safety of five (5) per ANSI B30.9.
These slings are on order and will be installed during the next refueling outage prior to the use of the lifting device.
Section 2.1.6 Non-Special Lifting Devices
- Open Item - Verify resolution of the statement made in the six month submittal concerning verification of factors of safety on slings.
Response - Our six month submittal indicated that verification of factors of safety of slings was not possible. That statement was intended to indicate that certification of those slings was not available in our records. We have however since verified that all slings were purchased from reliable vendors who sell products manufactured in accordance with industry standards including OSHA 1910.184. This assures that the l
requirement of a factor of safety of 5 for slings is met.
Certification of compliance with ANSI B30.9 is required on all new purchases.
- Open Item - To account for dynamic loading on slings, verify that impact factors for the associated handling systems are equal to or less than 10%.
- Response - Refer to Table B which shows that maximum impact factors for all load handling systems which are scope of NUREG-0612 are less than or equal to 10% thereby minimizing the affect of dynamic loading on the design factor of safety.
Page 6
Section 2.1.7 Cranes (Inspection, Testing, and Maintenance)
No open items for this section.
Section 2.1.8 Crane Design Open item -
The following items require verification or clarification based on BG&E's August 22, 1982 submittal. Numbers in parentheses refer to section numbers in that submittal.
A.) Verify that maximum crane speed is 30fpm. (3.3.1 - Impact Allowances)
Response - All crane hoists operate at speeds less than or equal to 30 feet per minute.
B.) Verify that girders are symmetrical. (3.3.1 - Twisting Moments)
Response - All crane girders are symmetrical.
C.) Verify that girders have specified proportions or that allowables have been reduced. (3.3.3 - Proportions: Box Girders)
Response - Crane box girders meet the proportions and associated stress limits indicated in CMAA-70.
1 Page 7
Section 2.1.8 (Cont.)
D.) Verify that girder allowables meet CMAA or allowables have been reduced. (3.3.3 - Girder Allowable Stresses)
Response - Crane box girders meet the stress limits indicated in CMAA-70.
E.) lerify that fatigue loading is within allowable. (3.3.3 Girder Allowable Stresses)
Response - Stresses due to cyclic loading are within the range of allowables specified in OdAA-70.
F.) Verify that hoist ropes meet required factor of safety. (4.2
- Hoist Rope)
Response - Crane hoist ropes meet the required factor of safety specified in CMAA-70.
G.) State conclusion on drum bending and crushing loads. (4.4 -
Drum)
According to Whiting corporation's " Crane Handbook" third edition, dated April,1967, page 83, "In designing drums, this crushing stress is combined with bending stress to arrive at a combined compressive stress which must be within design limits for suitable operation and service life". As this handbook was published in ,the time frame of our crane purchase and indicates that it reflects Whiting Corporation design practice, we consider it applicable to our cranes. We conclude therefore that drum design meets the compressive stress requirement of CMAA.
Page 8
INTERIM MEASURES l
All interim measures are complete.
Page 9
TABLE A BG8E EXCLUDED SYSTEM PHASE II REPORT
- i. CONCLUSION BASED ON PAGE REFERENCE PHASE II AND LISTED DISCUSSION Cntat. Equipment Page 23 No safe shutdown or decay heat removal equipment Hatch Hoist would be affected by a load drop from this system.
Containment Equipment Not discussed No safe shutdown or decay heat removal equipment Jib Crane (newly installed) would be affected by a load drop from this system.
Filter Cask Page 27 No safe shutdown or decay heat removal equipment Monorail would be affected by a load drop from this system.
Solid Waste Disposal Page 27 No safe shutdown or decay heat removal equipment j Trolley would be affected by a load drop from this system.
Main Steam Room Page 27 No safe shutdown or decay heat removal equipment Monorail would be affected by a load drop from this system.
Page 10
TABLE A (CONT.)
Bc&E EXCL!?DED SYSTEM PHASE II REPORT CONCLUSION BASED ON PAGE REFERENCE PRASE II AND LISTED DISCUSSION Component Cooling Page 28 only the train of equipment involved in the lift would Room Hoist be affected by a load drop and that equipment is out of service while being repaired. The lift device is only capable of lifting the specified load. Therefore, no safe shutdown or decay heat removal equipment in operation would be affected by a load drop from this system.
Turbine Building Page 29 Refer to Appendix A for discussion of CV-5149 failure Main Crane mode, as requested in October meeting. The additional cable referenced on P.29 of the Phase II report are only for level instrumentation of Condensate Storage Tank
- 12. This instrument is not required for Safe-Shutdown during the modes in which the identified heavy loads would be handled.
Switchgear Room Page 30 A dropped load impacting service water piping on Monorail Elevation 12" would affect only non-safe shut-down portions of that system and would not affect Page 11 t
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TABLE A (CONT.)
BG&E EXCLUDED SYSTEM PHASE II REPORT CONCLUSION BASED ON PAGE REFERENCE PHASE II AND LISTED DISCUSSION Switchgear Room Page 30 the operation of the remaining portions of the system.
Monorail (Cont.) No Safe Shutdown or Decay Heat Removal Equipment in operation would be affected by a load drop from this system.
Diesel Generator Page 32 Only the train of equipment involved in the lift Room Monorail would be affected by a load drop and that equipment is being repaired.
Machine Shop (Service Page 33 Refer to Appendix A for discussion of CV-5149 cable.
Building) No Safe Shutdown or Decay lleat Removal Equipment would be adversely affected by a load drop from this system.
Page 12
TABLE B CALCULATED. CRANE IMPACT FACTORS
- DEVICE ** MAX. LOAD MAX. SPEED MAX. IMPACT FACTOR (f.p.m.)
POLAR CRANE .
Main 180T 2.5 1.25%
Auxiliary 25T 20. 10.0%
SPENT FUEL CASK CRANE Main 150T 4. 2.0%
Auxiliary IST 12. 6.0%
INTAKE STRUCTURE CRANE Main 35T 5. 2.5%
Auxiliary 10T 20. 10.0%
- TRANSFER MACHINE JIB CRANE 6T 15. 7.5%
- Impact Alloitance = % x (Load) x (Speed, fpm) or 1/2% of the load for every fpm of crane speed expressed in ibf.
Impact Factor = Impact Allowance / Load = 1/2% x speed, fpm (Example: if crane speed of 30 fpm, impact factor = 1/2% x 30 = .15 or 15% of the load)
- Devices listed are those within the NUREG-0612 scope.
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4 TABLE C i
Calvert Cliffs List of Special Lift Devices Device Designer l
$ RV Head Lift Rig CE Upper Guide Structure Lift Rig CE
- Upper / Lower Superstand CE Lift Rigs
- Spent Fuel Cask Yoke Nuclear Assurance
- Vendor certifies compliance to ANSI N14.6 when brought to site for use.
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TABLE D ANSI N14.6 COMPLIANCE ANSI N14.6 Requirement BG&E Response 3.1 Designer Responsibilities Design Specification (3.1.1) Design drawings for all CE devices refer to design Performance Criteria specifications which are not readily available to us.
General Requirements We conclude based on usage and the information below Limitations that these devices were adequately designed.
Nameplate Information Critical Components (3.1.2) Refer to 3.1.1 above.
Listed in Specification Critical Characteristics 5 Point Requirements Stress Analysis (3.1.3) Reactor Head Lift Rig Analysis is on file. Other original Signed Analysis analyses are not available in our file. All rigs have been re-evaluated for NUREG-0612 and these analyses are available to us. This is considered acceptable by BG&E.
Page 15
TABLE D (CONT.)
ANSI N14.6 Requirement BG8E Response Repair Procedure (3.1.4) Repair to CE designed rigs would be per CE advice.
Designers Direction l 3.2 Design Criteria Stress Design Factor (3.2.1) All lifting devices have been reviewed and meet these Capable of 3 times rated load criteria. Material impact test requirements other than without exceeding minimum yield those which may be required material specifications would be in the CE specifications discussed above. We conclude however, that these devices are adequately designed.
Capable of 5 times rated load without exceeding ultimate strength Connections meet above criteria Wire rope / chain meet ANSI B30.9 Material to be impact tested !
Page 16
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TABLE D (CONT.)
l ANSI N14.6 Requirement BG&E Response 3.3 Design Considerations Problem Areas (3.3.1) The functions of special lift rigs designed by CE vere Environment established by CE. Based on usage and on design reviews .
i Galling performed under NUREG-0612. BC&E considers CE's design Lamellar Tearing of these devices satisfactory.
Load Distribution (3.3.4) Analysis and use indicate are loads adequately distributed.
Prevention of Disengagement (3.3.5) All devices are bolted or pinned in place during use.
Remote (Dis-) Engagement Verification (3.3.6) No special lift devices involve remote operation.
Page 17
TABLE D (CONT.)
ANSI N14.6 Requirement BG&E Response 4.1 Fabricators Responsibilities Proper Materials (4.1.3) All materials, practices, and QA were as required by CE.
Fabrication Practice (4.1.4) We conclude that measures taken at that time are adequate.
Qualified Welders (4.1.5)
QA Program (4.1.6)
Material ID and Certification per Specification (4.1.7)
QA on Procured Materials (4.1.9) 5.1 Owners Responsibilities Periodic Testing (5.1.3) Based on problems involved in physically executing such a Performance test, periodic load testing of special list devices will Test Expiration Date not be performed.
Control Page 18
TABLE D (CONT.)
ANSI N14.6 Requirement BC&E Response 5.1 Owners Responsibilities (Cont.)
Operating Procedure (5.1.4) Load movement operations are described in associated load ,
Use procedures. No maintenance is required on these devices.
Maintenance Identify Interchangeable Sub The UGS/ Core Support Barrel Lif t Rig Tripod is the only Assemblies (5.1.5) interchangeable device and is so identified in procedures.
Suitable Marking of Device (5.1.5) Devices are single purpose in function. No marking is necessary, however some devices have nameplates, f
Maintain Historical Records (5.1.6) No records exist to date. NDE and repairs in the future Testing will be recorded.
Use '
Incidents 1
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TABLE D (CONT.)
ANSI N14.6 Requirement BG&E Response 5.1 Owners Responsibilities (Cont.)
Remove Device from Service when Device will be removed from service following problem Required (5.1.7) identification during NDE or following mis-use. Criteria for removal is visual inspection standard implemented by user and detailed in plant instructions.
5.2 Acceptance Testing 150% Load Test (5.2.1) 125% load test on CE devices were performed prior to initial Replacement Part use. This is satisfactory to BC&E. Replacement parts would Qualification meet original design.
5.3 Continued Compliance Annual Test (5.3.1) No annual load test will be performed. NDE will be performed 150% Load Test on link used between hook and lift rig.
NDE Page 20
TABLE D (CONT.)
ANSI N14.6 Requirement BG&E Response
! 5.1 Owners Responsibilities (Cont.)
Remove Device from Service when Device will be removed from service following problem Required (5.1.7) identification during N E or following mis-use. Criteria for removal is visual typection standard implemented by 47- user and detailed in plant instructions.
5.2 Acceptance Testing 150% Load Test (5.2.1) 125% load test on CE devices were performed prior to initial Replacement Part use. This is satisfactory to BUSE. Replacement parts would Qualification meet original design, i
5.3 Contir.ued Compliance Annual Test (5.3.1) No annual load test will be performed. NDE will be performed 150% Load Test on link used between hook and lift rig.
NDE Page 20
TABLE D (CONT.)
ANSI N14.6 Requirement BC&E Response 5.3 Continued Compliance (Cont.)
Load Test After Renewal (5.3.2) No load tent following renewal or overstress would be anti-Load Test on Over Stress (5.3.3) cipated, however adequate measures would be taken using -
established plant procedures to assure proper repairs had occured.
Inspection for Use/ Maintenance (5.3.6/5.3.7) Visual inspection for gross structural integrity will be performed by user prior to use.
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s-0 APPEND 1X "A" The control circuit for CV-5149 is a floating, d.c. circuit. A short to ground, therefore, will not energize the valve's air supply solenoid valve.
The Control Valve is " air to open".
The current limiting characteristic of the valve position indicating lamps and the low operating current of those lamps does not allow any other combination of shorts to supply sufficient current to cause the solenoid to energize.
The circuit has previously been referenced in BG&E's Safe Shutdown Analysis referred to in our Phase I Report.
We conclude that the presence of this cable does not in any way solely -
present the elements necessary to justify inclusion of the referenced handling system in Phase I of NUREG-0612.
Page 22
APPENDIX "B" Special Lift Devices at Calvert Cliffs ANSI N14.6 Compliance Position Table C is a list of special lift devices used at our facility. BG8E considers only structural lif t devices to be in the scope of ANSI N14.6.
Slings and spreader beams, although designated for a specific device are not included. Those items were however, reviewed and verified to meet ANSI B30.9 and ANSI N14.6 Design Criteria, respectively.
Generally, all CE lift devices were designed to specifications and welding procedures, according to design drawings. Those devices were also pre-use
, tested to 125% of design load.
The Nuclear Assurance cask yoke and the CE Superstands are certified to meet ANSI N14.6 by the vendors. Table D is a listing of BG&E's responses to the sections of ANSI N14.6 referred to by Frank in Research in their review of our Phase I response.
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FIGURES SK-ME-101 Sheet 3 - Load Path - Nuetron J
Shielding Framework
- Unit 1 SK-ME-101 Sheet 4 - Load Path - Nuetron Shielding Framework
- Unit 2 i
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