ML20004F914
| ML20004F914 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 06/22/1981 |
| From: | Utley E CAROLINA POWER & LIGHT CO. |
| To: | Ippolito T Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0612, RTR-NUREG-612 NO-81-1076, NUDOCS 8106260174 | |
| Download: ML20004F914 (23) | |
Text
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--ni..,..;y, June 22, 1981 File: NG-3514(B)
Serial No.:
NO-81-1076 S
Office of Nuclear Reactor Regulation g
ATTENTION:
Mr. T. A. Ippolito, Chief Operating Reactors Branch No. 2 g
United States Nuclear Regulatory Commission i
d Washington, D. C.
20555 2
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BRUNSWICK STEAM ELECTRIC PLANT UNIT NOS. 1 AND 2 Mp 4,
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DOCKET NOS. 50-325 AND 50-324 g
LICENSE NOS. DPR-71 AND DPR-62 CONTROL OF. HEAVY LOADS g
Dear Mr. Ippolito:
This letter is in response to an NRC request dated December 22, 1980 concerning the control of heasy loads at nuclear power plants.
Carolina Power & Light Company has assembled the information r2 quested
'in Section 2.1 of Enclosure 3 to your letter. This infora tion is in the attachment to this letter.
We have not identified any changes or modifications that are
,necessary as a result of this review. We are continuing with our review in order to respond to your request for additional information which is due to you by September 22, 1981. We will advise you of our schedule for making any changes or modifications that may result from this additional review as a part of our September 22, 1981 response.
Yours very truly,
./
A E. E. Utley Executive Vice President Power Supply and Engineering & Construction SDF/je (9656)
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BRUNSWICK STEAM ELECTRIC PIMT UNITS 1 & 2 CONTROL OF HEAVY LOADS t
RESPONSE TO REQUEST BY-NRC FOR ADDITIONAL INFORMATION PART I 7UE 6-22-81 t
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PART I RESPONSE TO REQUEST FOR ADDITIONAL' INFORMATION ON
" CONTROL OF HEAVY LOADS" The.following report. constitutes CP&L's response to the NRC regaiding their. request for additional information on'" Control of Heavy Loads".
As requested in the December 22,'1980 NRC. letter; Part I, answers those
. questions identified in Section 2.1, " General Requirements for Overhead Handling. Systems" of. Enclosure 3.
2.1 General Requirements for' Overhead Handling Sys tem __s, Readest: 2.1 (1)
" Report the results of your review of plant arrangements to identify all overhead handling systems from_which a load drop may result in damage to any system required fer plant shutdown or decay heat removal (taking no credit for any interlocks, technical specifications, operating procedures, or detailed-structural analysis".
Response to 2.1 (1) i-The overhead handling rystems identified during the review of plant are listed by building as follows:
. Reactor Building i.
Cranes-i Reactor Building Crane - 125-ton Whiting Overhead Traveling Bridge Refueling Platform - Stearns-Rodgers Refueling Jib Crane - 1000 lbs. @l5'R Hoists-Monorails
.MR-2 10-Ton Hand Operated Chain F.oist t
MR-3 2-Ton Hand Operated Chain Hoist MR-4 10-Ton Hand Operated Chain Hoist l
MR-7 10-Ton Hand Operated Chain Hoist MR-10 5-Ton Hand Operated Chain Hoist MR-11 5-Ton Hand Operated Chain Hoist MR-12 5-Ton Hand Operated Chain Hoist MR-13.
-Ton Hand Operated Chain Hoist i
MR-20 20-Ton Hand Operated Chain Hoist i
MR-21 20-ron Hand Operated Chain Hoist Diesel Generator Building Cranes 5-Ton Single Bridge Crane Hand Operated D/G 1" 5-Ton Single Bridge Crane Hand Operated D/G "2" 5-Ton Single Bridge Crane Hand Operated D/G "3" 5-Ton Single Bridge Crane Hand Operated D/G "4"
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Hoists-Monorails 5-Ton Hand Operated Chain Hoist Intake Structure Cranes intake Structure Crane Ton P&H Traveling Gantry Request:
2.1 (2)
" Justify the exclusion of any overhead handling system from the above category by verifying that there is sufficient physical separation from any load-impact point aed any safety-related component to permit a determination by inspectic_ that no heavy load drop can result in damage to any system or component required fqr' plant shutdown or decay heat removal".
Response to 2.1 (2)
Reactor Building Monorail-Holsts Mi-1 2-Ton Hand Operated Chain Hoist for Vacuum Breakers MR-5 5-Ton Hand Operated Chain Hoist for CRD Pump A MR-6 5-Ton Hand Operated Chain Hoist for CRD Pump B MR-8
' 10-Ton Hand Operated Chain Hoist for Valve Removal MR-9 10-Ton Electrical Motor Hoist & Trolley for Steam and F. W. Valves MR-14 1-Ton Electrical Motor Hoist & Trolley for Contamination Equipment Room MR-15 1-Ton Hand Operated Chain Hoist for Gamma Scan Lead Plug MR-16 10-Ton Electrical Motor Hoist & Trolley for Access Covers f
MR-17 2-Ton Hand Operated Chain Hoist for Removable Platform MR-18 1-Ton Hand Operated Chain Hoist for Neutron Monitoring Equipment i
MR-19 10-Ton Hand Operated Hoist for Hatch Covers (6) ST-4 2-Ton Hand Operated Chain Hoist & Davit for Relief Valves The above hoists are either removed or physically secured during non-use periods. A physical inspection confirmed that no safe shutdown or decay heat removal components are adjacent to the monerails and/or davit arm load paths; therefore, no safe shutdown or decay heat removal component could be damaged by a load drop.
Turbine Building i
ytanes I
Turbine Building Crane 188-Ton Whiting Overhead Traveling Bridge. -,
6 Auxiliary Bay Crane 100-Ton Whiting Semi Gantry
' Hoists 4
8-Ton Hand'0perated Chain Hoist for Recirculation Pump M.G.,
Set'A
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8-Ton Hand Operated Chain Hoist for Recirculation Pamp M.G.,
Set B 5-Ton Hand Operated Chain Hoist for Condensate Booster Pumps 1-Ton Hand Operated Chain Hoist'for Air Compressor
.The above cranes.and hoists have been omitted from Item 2.1 (1) since no system or component required for plant shutdown or decay heat removal is located in the Turbine Building.
Intake Structure Monorail-Hoist The 5-ton electric hoist used at the-intake structure is over 200 feet from any safety-related system or component and' therefore has been precluded from being considered as a hazard with regard to handling loads near safety-related systems'and components.
Radsaste Building Monorail-Hoists
. MR-1 4-Ton Eleatric Motor. Hoist & Tro11(y for Backwish Air Blowr.
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MR-2 12-Tot Electric Motor Hoist & Trolley for Filter Demineralizer Tank l
- MR 8-Ton Electric' Motor Hoist & Trolley for Fuel Pool Filter and Wasta Collector l
Filter l
MR-4 12-Ton Electric Motor Hoist & Trolley for l
Filter Demineralizer Tank MR-5 8-Ton Electric Motor Hoist & Trolley fo.'
Floor Drain Filters MR-6 2-Tou Hand Operated Chain Hoist for Centrifuge MA-7 2-Ton Hand Operated Chain Hoist for Centrifuge
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MR-8 3/4-Ton IIand Operated Chain Hoist for i
HVAC Equipmant l
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The radweste monorails / hoists are not. included in Item 2.1 (1) aoove since they are completely separate from the area of saf.
4 shutdown.or decay heat removal systems and/or components. The separation is established by concrete walls as well as distance.
Shop Cranes & Miscellaneous Hoists Cranes 5-Ton Hot Machine Shop Crane 5-Ton Clean Machine Shop Crane Monorail-Hoists 5-Ton Electric Motor Hoist & Trc11ey for Floor Plug and Of f-i.
Gas Filter 2-Ton Hand Operated Chain Hoist for Pumps and Valves 1-Ton Hand Operated Chain Hoist for HVAC Equipment 5-Ton Hand Operated Chain Hoist for A0G Equipment c
The above cranes and hoists have been excluded from Item 2.1 (1) above since no system or component required for plant shutdown or decay heat removal is locatgd in the shop or other areas where the hoists are located.
s Request:
2.1 (3)
"With respect to the design and operation of h'eavy load-handling
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- systems in the containment and. the spent fuel pool area and those load-bearing systems identified in 2.1-1 above, provide your evaluation l-concerning compliance with-the guidelines of NUREG-0612, Section 5.1.1.
The following specific information should be included in your reply".
?
Repo. 2 to 2.1 (3) Summary Our' review of NUREG-0612, Section 5.1.1, indicates that BSEP is substantially in compliance, There are several minor points of exception or deviation. These points are commented on below:
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'1.
Section 5.1.1'(1) of NURBG-0612, Eafe Load Paths, requires that load paths should be " clearly marked on the floor in the area where the load is to be handled".
Comment Safe load paths have been defined on the drawings referenced l
in Response 2.1 (3)a. Loads are moved by the safest and
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shortest paths in accordance with the above drawings and written procedures. Due to the number of paths and their
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configurations, it is felt that marked load paths could possibly cause confusion and therefore not contribute to assuring the safe handling of loads.
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2.
Section 5.1.
(4) requires that "special lif ting devices should satisfy the guidelines of ANSI N14.6-1978 ' Standard for Special Devices for Shipping Containers Weighing 10,000 Pounds (4,500 kg) or More for Nuclear Materials'.
This standard should apply to all special lif ting devices which carry heavy loads in areas as defined above".
Comment The lifting devices identified in Table ~3-1 are designed in accordance with accepted industry standards and good engineering practices. ANSI N14.6-1978 was not in existence during Brunswick Stcan Electric Plant design. Further discussion regarding adequacy of design is located in Responsa 2.1 (3)d.
3.
Section.5.1.1 (5) requires that " lifting devices not specially designed should be installed and used in accordance with the guidelines of ANSI B30.9-1971 ' Slings'" and that "in selecting the proper sling the load used should be the sum of the static and maximum dynamic load".
Comment Non "Special" lif ting devices such as slings, shackles and fittings are in compliance to ANSI B30.9-1971 or other applicable standards such as Federal Specification RR-C-271 for shackles; however, components were sized using only static load. Additional comments regarding design adequacy are located in Response 2.1 (3)d.
Request:
2.1'(3)a
'9 Drawings or sketches sufficient to clearly identify the location of safe load pa*.hs, spent fuel and safety-related equipment".
Response to 2.1 (3)a The following drawings identify safe load paths for loads identified in Response 2.1 (1) above. A copy of each drawing is attached to this report.
i.
81020-M-001 Safe Load Paths SH.1, SH.2, & SH.3 Reactor Building Elevation L
117'-4" 81020-M-002 Safe Load Paths SH. 1 & SH. 2 Diesel Generator Building 81020-M-003 Safe Load Paths Intake Structure 81020-M-004 Safe Load Paths Reactor Building Elevation 50'-0"
81020-M-005 Safe Load Paths Resctor Building Elevation 20'-0" 81020-H-006 Safe Load Paths Reactor Building Elevation 17'-0" Request:
2.1 (3)b "A discussion of measures taken to ensure that load-handling operations remain within safe load paths, including procedures, if any, for deviation from these paths".
Response to 2.1 (3)b The safe load paths indicated on the drawings listed in Response 2.1 (3)a above are referenced in various plant operating procedures. These procedures are identified in the tabulation of heavy loads which is Table 3-1.
The procedures refer maintenance and operations personnel to the applicable load path drawing. The load paths follow the safest and shortest routes with consideration given to going around fuel and safety-related equipment. In addition, reference to safe load paths is made in Procedure MP-6 " operation and Inspection of Cranes and Material-Handling Equipment". During crane operator training and requalification, crane operators are instructed regarding these load paths. The work is performed in accordance with the written approved procedures by experienced personnel and supervised by competent foremen. Prior to initiating the work activities in the procedure, the foreman critiques the procedure with his men to assure each one knows the correct methods to be followed. Electrical interlocks, as well as written instructions in the plant procedures, prevent loads from being handled over the spent fuel and reactor except during specific operations.
To summarize, loads are handled along established safe load paths under the control of qualified and experienced personnel in accordance with written and approved procedures.
Request:
2.1 (3)c "A tabulation of heavy loads to be handled by each crane which includes the load identification, load weight, its designated l
l lif ting device, and verification that the handling of such load is governed by a written procedure containing as a minimum the information identified in NUREG-0612, Section 5.1.1 (2)".
Response to 2.1 (3)c Table 3-1 lists by crane the loads normally handled. Included in the Table are load weights, designated lif ting devices, aad reference to procedures which govern the activities being performed. The procedures generally include sections for purpose, responsibility, precautions, special equipment and descriptions, references, and step-by-step instructions. The procedures in use at Brunswick Units 1 and 2 meet the intent of NUREG-0612, 9ection 5.1.1 (2). I'
Raouest:.2.1 (3)d
Verification that lif ting devices ' identified in 2.1.3-C above comply with the requirements of ANSI N14.6-1918 or ANSI B30.9-1971 e
as appropriate. For~11fting devices where these standards as supplemented by NUREG-0612, Section 5.1.1 (4) or.5.1.1 (5) are not met,l describe any proposed _ alternatives, and demonstrate their-equivalency in terms of load-handling reliability".
Response to 2.'1 (3)d-LThe " cask redundant. lifting yoke" and the' work basket redundant
- lifting rig are of redundant design, and the crane on which they-
.are used is single - failure-proof. ~ Therefore, a load drop with regard to equipment handled by the above systems is not considered
. credible.
Load-handling. devices at BSEP identified in Table 3-1 (other than those discussed above) were designed in accordance with accepted-industry standards and good engineering practices.
Our preliminary. review indicates that ".Special" lifting devices were designed for a minimum safety factor of 3 based on yield strength, considering only static load. When a dynamic load of 25%
is considered, the safety factor is reduced to 2.4.
We are in the prociass of confirming the design criteria used for these special lifting devices; this confirmation will be formalized in our September 22, 1981, reply.
'.'Non-special" lif ting apparatus such as slings, shackles, and -
' fittings are sized to mairtain a minimum safety factor of 5, based on ultimate strength and considering only static load.
Lifting devices are inspected and maintained in accordance with the requirements of ANSI B30.9, B30.10, and N14.6.
The existing BSEP' inspection, testing and maintenana.e procedures are considered an extremely important segment for assuring safe load-handling operations.
Request: 2.1 (3)e
" Verification that ANSI B30.2-1976, Chapter 2-2, has been invoked with respect to crane inspection, testing, and maintenance. Where
.any exception is taken to.this standard, sufficient inforination should be provided to aeuonstrate the equih lency of proposed alternatives".
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Response to 2.1 (3)e The crane inspection, testing, and maintenance program at BSEP is in conformance with ANSI B.30.2-1976, Chapter 2-2 and the Occupational I' V
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LSafety and Hisich Standards, Section 179,29CFR, Part 1910. Various i
' written procedures are ht effect which implement the requirements of'the'above. standard and regulation.-.These precedures are reviewed
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'during crane.operater ttaining to familiarize the operators.with these requirements.1 Maintenance personnel responsible for performing
' inspection, testing and maintenance:are qualified and experienced with regard.to.the above standards.-
- Reauest: '2.1 (3)f
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Verify that' crane design complies with the guidelines of CMAA Specifica-tion 70 and Chapter 2-1 of ' ANSI B30.2-1976, including.the demonstration of equivalency of actual design requirements for instances where specific compliance with these standards is not provided.
" Response to.2.1 (3)f uAll of the. cranes and hoists used-at.the BSEP except the refueling bridge were purchased in accordancet with UE&C specifications as
-discussed below:
1.
The~ Reactor Building crane. is of single-failure-proof design. Detaila of the crane were provided to the~NRC by lettar-on June 18,,1976 and July 26, 1976.
The Reactor Building overhead cranes were purchased in accordance with United Engineers and Constructors, Inc.,
. Specification No. 9527-01-257-2. The Specification requires-that these " cranes shall conform to the latest editions of CMAA, Specification No.'70 for Flectric Overhead Traveling Cranes.and ANSI B30.2 for Overhead and Gantry Cranes unless otherwise specified or noted".
2.
The. Intake' Structure. crane was purchased in accordance with United Engineers ' and Constructors, Inc., Specification No. 9527-01-257-10. The Specification requires that
" cranes furnished under this specification.shs11 conform to the requirements of American National Standard Safety Code for ' Overhead Gantry Cranes, ANSI B30.2 and the-Crane Kanufacturers Association of' America, Inc., Specifications
-for Electric Overhead Travelirg Cranes, CHAA Specification No. 70".
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3, The Refueling Jib Crane was purchased in accordance with United Enginetra & Constructors, Inc., Specification No. 9527-01-257-6. The Specification required tnat the
" jib crane shall conform to applicable portions of the following codes. AISC, NFPA, NEMA, ASA-Safety Codes for Cranes, Derricks and Hoists, AWS, SSPC, ASTM, and ASME l
Boiler and Pressure Vessel Code.
Section.VIII, Division 1, and that'the hoist shn11 be designed to the requirements of NEMA and NEC ac they apply to a hnist. The jib crane
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and its components were designed to withstand seismic events (while fully loaded) to the extent chat a static i.
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to that loading will not cause any part of the unit to be' overstressed and also will not result in a loss of control
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of load.
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The remainder of cranes and hoists. identified in Response 2.1 (1) ~
- above except the refueling bridge were purchased in 1
accordance with United Engineers & Constructors, Inc...
Specification No. 9527-01-257-5.. The Specification.
requires that the hoists and cranes "shall be furnished and designed in accordance with'the Occupational Safety.
and Health Administration Standard 29CFR ' which includes ANSI B30.2-1967. Overhead and Gan*ry Cranes'and electrical equipment shall' conform with the National-Electric
~ Code".
Welding procedures and personnel qualification-are required to be in conformance with AWS D14.1.
In addition, the equipment was specified to be designed such that "all equipment shall.be. secured in auch a manner as not to. fall during a seismic reaction while in an unloaded condition",~and that 90% of the yield stress shall not'be exceeded. Seismic coefficients for vertical and horizontal were specified in tae equipment list ranging from.24g to.50g.
Request:
2.1 (3)g
. Exceptions, if any, taken to ANSI B30.2-1976 with respect to
- operator training, qualification and conduct.
Response to 2.1 (3)g
- All crane operators are trained in accordance with the requirements of ANSI B30.2-1976. No exceptions are taken.
Crane operators are required to receive classroom instruction and gain practical operating experience under the direction of other qualified operators for each crane on which they are to become quslified. In addition to a physical examination by a medical doctor, each operator trainee must pass a written examinacion.
Crane operators are required to requalify annually. The crane operator training program plays an important part in assuring safe
- handling of loads at BSEP and therefore is carefully administercd by the maintenance supervisor or his designee.
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TABLE 3-I Sheet 1 of 3 TABULATION OF HEAVY LOADS auo, 3, 1931 FOR BRUNSWICK STEAM ELECTRIC PLANT i
l CRANES LOAD IDENTIFICATION WElGHT LIFTING DEVICE PROCEDURE Reactor Building Crane Shielding 117 Tons Slings (2 braided 3/4"x8 parts: MP-8, HP-6 Whiting Overhead Tra--
voling Drywell llead
- 85. Tons liead Strongback MP-8 125 Ton Main Reactor Vessel llead 70 Tons llead Strongback Fli-3, MP-7 5 Ton Aux.
Steam Dryers u75,000 ~#
Dryer & Sepsrator Sling FH-3, MP-9 r102,000 f Dryer & Separator Sling MP-9 Moisture Separators e
RPV Service Platform 7 Tons Service Platform Sling 14,000A Fil-3, PT 18.2, Fil-5 l
RV llead Insulation 4,00 lbs IIcad Strongback MP-7 llead Strangback Main liook Fil-3, HP-7 3
Stud Tensioner Tensioner Frame MP-7, HP-8 Access Plugs 117 Tons Slings.
MP-6 HEPA Filter 2 Tons Sling MP-6 j
Spent Fuel Pool Gates Slings MP-9 Spent Fuel Shipping Cask 80 Tons.
Redundant Lifting Yoke MP-27, HP-29 PWR Fuel Rack 8,720 lbs Sling BWR Fuel Rack 7,2u0 lbs Sling Cattle Chute 12 Tons Slings MP-9 l
Shielded Personnel Work Redundant Llfting Rig MP-6' Basket 8,500 lbs Dryer Separa g g & Main Hook Replacement Fuel Later Latar Later Storage Racks Fuel Grapple 5,200 lbs Fuel Grapple Service Sling Fil-5, FH-llA i
5800#
R.V. Head Stud 600 lbs Stud Handling Tool FH-3, MP-7 Sling 3800#
FH-3, MP-7 Head Nut 6. Washer Rack 600 lbs lier.dling /4" spreader)
(4 Leg 1
TABLE 3-I Shcce 2 of 3 TABULATION OF HEAVY LOADS June 3, 1981 FOR BRUNSWICK STEAM ELECTRIC PLANT CRANES LOAD IDENTIFICATION WEIGHT-LIFTING DEVICE PROCEDURE Reactor Building Ilead Stud Rack 3,000 lbs llandling Sling Fil-3, Fil-5, MP-7 Crane Continued Refueling and Service Tools
.4 Tons Various Fil-10, FH-ll, Fil-llA, Fil-15 New Fuel
~ 745 lbs General Purpose Grapple Fil-9 Debris Cask 11,Toas Sling MP-6 Invessel Service Platform
'20 Tons Strongback MP-6 Refueling Platform Reactor Vessel Servicing &
" -18.1, MP-6, Fil-11A Refueling Traveling Bridge BWR Dummy Fuel Assembly 600 lbs Fuel Grapple Fil-4 4 Wheel Overhead Trolley & Aux. Iloist BWR New Fuel Assembly 745 lbs Fuel Grapple Fil-5, Fil-9, Fil-10, FH-ll On Separate Monorail BWR Spent Fuel Assembly 745 lbs Fuel Grapple FH-5, Fil-ll, Fil-15
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Refueling & Service Tools
.4 Ton Various Fil-10, Fil-11,1ll-llA, FH-15 i
PWR Fuel 1,439 lbs Fuel Grapple FH-13 Refueling Jib MP-6 Crane Refueling Tools Hand Operated Boom w/
Reactor Components
.5 Ton Various Fil-4, Fil-5 Trolley 6. Chain iloist 1
RB Hoists lleaviest Load j
MR-2 Chain iloist RilR Pumps 3 5 D 8,400 lbs Slings MP-6 MR-3 Chain lloist RCIC Pump & Turbine 625 lbs Slings MP-6 MR-4 Chain Hoist RilR Pumps A & C 8,400 lbs Slings
'MP-6 MR-7 Elec. Motor llPCI Pump & Turbine 8,400 lbs Slings MP-6 j
lloist & Trolley MR-10 Chain iloist RHR Service Water & Booster 5 Tons Slings MP-b Pump A MR-11 Chain Hoist RIIR Service Water & Booster 5 Tons Slings MP-6 Pump B
TABLE 3-I
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Sheet 3 or 3.
l TABULATION OF HEAVY LOADS June 3, 1981 FOR
-BRUNSWICK STEAM ELECTRIC PLANT l
CRANES LOAD IDENTIFICATION WEIGHT -
LIFTING DEVICE PROCEDURE i
MR-12 Chain Holst RllR Service Uater & Booster 5 Tons Slings MP-6 MR-13 RilR Service Water & Booster 5 Tons Slings MP-6 i
Pap D MR-20 Chain iloist Recire. Pump Motor A 34,000 lbs Slings MP-6 MR-21 Chain lloist Recirc. Pump Motor B 34,000 lbs Slings HP-6 Intake Structure Crane Service Water Pumps 6,284 lbs Sling MP-6 P&ll Traveling Gantry
- 3ervice Water Motors
'3,600 lbs Sling MP-6 l
Cire. Water Pumps 56,000 lbs Sling MP-6 34,000 lbs Cir.:. Water Motors 45,000 lbs Sling MP.6 Traveling Screens Cire. Water 54,000 lbs Strongback (28 tons)
MP-6 Service Water 21,100 lbs Slings MP-6 Diesel Bu,ilding Cranes 1
l Single Bridge D/G 1 Co;ponents 3,300 lbs Sling MP-6 Hand Operate 1 D/G 2 Components 3,300 lbs Sling MP-6 Chain iloist & Trolley D/G 3 Components 3,300 lbs' Sling MP-6 D/G 4 Components 3,300 lbs Sling MP-6 f
Iloists Chain iloist & Trolley Switchgear 5 Tons Sling MP-6 a
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