ML20008F433
| ML20008F433 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 04/18/1975 |
| From: | Arnold A BECHTEL GROUP, INC. |
| To: | |
| Shared Package | |
| ML20008F431 | List: |
| References | |
| 6750-M-338C, NUDOCS 8103130483 | |
| Download: ML20008F433 (15) | |
Text
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6750-M-3 3 8C Po== and Ind.*=1 Specification No. j giCgigL m .
Job No. 6750 o~ SPECIFIC ATION UUIT 2 -
F JR PLANT INSULATION, UNIT 2-EXCEPT REACTOR CAVITY INSULATION, REACTOR COOLANT SYSTEM AND STEAM GENERATORS INSULATION CALVERT CLIFFS NUCLEAT. --0WER PLANT UNITS NOS.1 AND 2 BALTIMORE tiAS AND ELECTRIC COMPANY CALVEh- COUNTY, MARYLAND Comprising:
Cover Sheet
. individual Page Revision Index Sheet Specific Conditions Drawing and Data Requirements (Form G-321-C)
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Insulation Measurement Diagram (Form M-977-E)
Pipe Insulation Class Summary Date: 3 7!75
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By: $. Y -
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Group Supervisor. .
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2 Issued for Bids: Rev. O CA QA (Pro)\ Engr. )
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! . (Date) i Revised for Bids: Rev.1 MOah 44N 15 (Prohngr. ) (Date)*
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Power and th Specification No. 6750-M-338C ontmo.
SPECIFICATION REV.1 INDIVIDUAL PAGE REVISION INDEX SHEET Latest Individual Latest Page Page Number Page Revision No. Revision Date 1 0 3/7/75 2 1 4/17/75
'3 0 3/7/75 4 1 4/17/75 5 1 4/17/75 6 O 3/7/75 7 0 3/7/75 8 1 4/17/75
.9 0 3/7/75
- 10 0 3/7/75 Form G-321-C 0 3/7/75 s
{, Form M-977-E O 3/7/75 Pipe Insulation Class Summary - Unit 2: ,
__ _ . Sheet 1 of 7 0 3/7/75 l Sheet 2 of 7 0 3/7/75 l Sheet 3 of 7 0 3/7/75 Sheet 4 of 7 0 3/7/75 Sheet 5 of 7 0 3/7/75 Sheet 6 of 7 0 3/7/75 . .
Sheet 7 of 7 0 3/7/75 l
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pfCgrit ' nmrmud i.e.enal Specification No. 6750-M-338C
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(- 4.0 CONDITIONS OF SERVICE
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4.1 All heat insulating material on both piping and equipment shall be of the specified type, and shall be applied in strict accordance with details outlined in this Specification.
4.2 Any major deviation from this Specification will be permitted only after a written approval by the Contractor.
4.3 The thicknesses specified in Paragraph 5.3 are intended to indicate the minimum extent of insulation value accepted for covering surfaces indicated and the insulation furnished shall be based on those materials of regular commercial dimensions having thickness in closest accord with, but not less than the equive. lent of the specified " minimum".
- 4. 4 Certain piping will be installed which will be operating at such temperatures not requiring thermal insulation for prevention of heat loss, but requiring insulation for personnel protection. Such piping will be designated by the Contractor in the field. Quantity for installation of personnel prote: tion insulation shall be mutually 4 agreed upon by the Contractor and the Subcontractor in the course of construction.
4.5 At the option of the Contracto'r, the Subcontractor shall furnish full size
{'- samples of all the materials specified herein. The Contractor reserves the right to subject such samples to tests to determine whether their ' heat conductivity is sithin the guarantees given by the Subcontractor and to make any other tests to eletermine the suitability of the materials for the work. The Contractor reserves the right also to take samples at random on receipt of material on the job, during application, or any other time, and to subject them to tests to determine the ful-lillment of guarantees, suitability, quantity, etc.
4'. 6 The insulation in the containment will be sabjecte'd to the following atmospheric conditions (worst case):
4 Maximum gamma radiation dosage 1. 2 x log /hr.
Neutros flux less than 3 x 10 nv Post-a ccident-tempe rature 271F Post-accident-pressure 60.89 psia Boric acid spray concentration 1720 ppm y 5.O DESIGN REOUIREMENTS g 5.1 . pil the insulation shall be guaranteed to withstand continuously and withoug deterioration the maximum temperature in the range specified for use of that insulatingmaterialand shan at least meet the following Specification:
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Page 2 or 10 R ev. 1 - 4/17/75 m
Po-w ad idestrian Dmme.
Specification No.
6750-M-338C
- a. Combustibility
- b. Will not burn N$ Design life
- c. Life of pipes Lineal shrinkage in percent at the maximum temperature specified, 1.0fe maximum after 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> soaking period at 750 F.
d.
Rate of heat loss (K) in Btu per '
hour per sq. ft. per inch thickness Mean T_ K per degree Fahrenheit difference 800 F_ 0. 68 max.
between the surfaces of the cover- 700 F_ 0. 63 max.
ing for the temperature specified. 500 F_ 0. 54 max.
400 F _ 0. 49 max.
300 F_ 0. 45 max.
200 F_ 0. 41 max.
100 F __
- e. 0. 3 8 max.
Noncorrosive __
All fabricat,ed insulation for r.tainte steel shall contain no more than 200 parts per million of leachable
- 5. 2 chlo rid es .
shall be demineralized water of less for n materials m chloride.
than 1 ppAll stainless steel wa nail oe used in construction within the 5.3 _
No containment.
zinc.or aluminum I_nsulation Thicknesses The following insulation thicknesses are the mi i each class for power piping in the n mum required under Building including Heater Bay Area, the Servie Auxiliary Building, the
) in these areas, and all other areas of th e plant:ce Building, the equipment Fiberglas Insulation !
Cla s s V Calcium Silicate Insulation Pipe Size Cla s s IV L60 to 299F Clas s III_
2" & less _300 to 39g_
CJAss II_
Cla ss I_
1" 400 to 499F 500 to 599F 2-1/2" 1" 1-1/2" 2" 6,00,,t,9gF g 1-1/2" 2" 3 ".
4"
~ ~ ~'- ~ ~ ~ ' f5 1-1/2" 2"
2-1/2" 2-1/2" 1 -1/2" 2" 2 -1/2" 6" 2" 2-1/2" 3" 8" 1-1/2" 2" 2-1/2" 5" 1-1/2" 2 -1/2" 3" 3 -1/2" 10 " 2" 12" 1-1/2" 2 -1/2" .
2c/2" 4" 4"
2" 2 -1/2" 4-1/2"
,_16" & larger 2-1/2" 4" 4-1/2" A" 2 -1/,2" 2-1/2 " 4"
(. including '
2 -1/2" 4" i-1/2" equipment - . 4-1/2" Note: The above thicknesses do not include weatherproof covering or metal lagging. Page 3 of 10
- Rev. 0 - 3/7/75 ..
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%-s tad =ard Specification No. 6750-M 335C g& E .s Ommaa
- 5. 4 Protective Insulation: (PP) - Personnel Protection. Insulation for personnel protection on hot lines not usually insulated shall be applied t; a heignt of 7 feet
(. above floor or platfom areas. Personnel Protection insulation locatir.ns shall be determined in the fieid. PP insulation thicknesses for Unit 2 shall be ir accortlance with the following table.
Personnel Protection (PP) Insulation for Unit 2 Fibe r dia s In s ula tion 1 Calcium Silicate Insulat' .
Class V Qas s IV Clas s III Class II Cla.s s I Pine Size 160 to 299F 330 tc 399F 400 to 49CF 500 to 500F 600 tc 600:
2" & less 1" 1" 1- 1/2" 2" 2 - 1/ 2" 2 - 1/ 2" 1" 1" 2" 2" 2 -1/ 2" 3" '1 " ' - 1" 2" 2 - 1/ 2 " 3"
~4" ~1" 1" 2" 2-1/2" 3" 6" 1" 1-1/2" 2" 3" 3 -1/ 2" 8"' 1" 1-1/2" 2 - 1/ 2" 3" 3 -1/ 2" 10 " 1" 1-1/2" 2 - 1/ 2 " 3" 4" 12 " 1" 1- 1/ 2" 2 - 1/ 2 " 3 -1/ 2 " 4" 16" & la r ge r 1" 1-1/2" 2 - 1/ 2 " 3 -1/ 2"- 4 -1/ 2" including equipment .
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Note: The above thicknesses do not include weatherproof covering or metal lagging.
- 5. 5 Instrumentation Piping Insulation shall be determined in the field for personnel preteetion. ,
1 5. 6 . ~ _- a:
a.- - - - -' &,-s.-,,._.- 4 ~u.u-
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- a. Reacted Hydrous Calcium Silicate with reinforcing Mineral Fiber l and in conformance with ASTM designation C533-67 for pipe and l equipment operating at temperatures up to 699 F.
l b. Owens .Cor=ing one-piece Fiberglas (450F) or equal for pipe and l equipment operating at temperatures up to 399 F. _
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- c. Pittsburg Corning Temp - Mat or egr.a1 pipe and-equipment operating at temperatures up to 1200 F.
- d. Armstrong Armaflex or equal for pipe and equipment operating at l temperatures up to 180 F.
- 5. 7 Insulation for carbon steel piping, bends, fittings, equipment, and valves l
for the Service Water System inside the containment and the auxiliary building b except the Unit 2 Service Water Pump Roorn and Unit 2 ECCS Pump Room s' hall be Armstrong Armaflex. The Service Water System piping in the Service Water Pump 11oom and ECCS Pump Room shall be fiberglas as specified in the Pipe Insulation Class Summary. Page 4 of 10
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g gCg 6 4om.4 n.: Specification No. 6750-M -338C
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- 5. 8 All sectional or block covering having a total thickress, exclusive of the specified finish, greater than 2 inches may 1.e applied in two or more layers care
{; being taken th;t both longitudinal and end joints of outer layers match join those of inner layers, and that the ends of adjacent sections in each layer are buttad tightly again.t each other.
5.9 The Service Water System piping insulation (Armstrong Armaflex) in the Auxiliary Building except in the Unit 2 Service Water Pump Room and Unit 2 ECCS Pump Room shall have nc covering. All other insulation shr.11 be 0,016" aluminum
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fackete'd7 exceptTn the containment'afea wn' ere jacketing shall be el'sniniess steel, and conforming to the lates.t issue of the ASTM Specification.
5.10 Weatherproof exterior finish shall be an outerlagging of 0.016", with vapor barrier permanently bonded which shall be used on z.11 equipment and piping.
Large fittings in the main steam and reheat lines shall be covered with the insulation specified under Paragraph 5. 6 and lagged with 0.016" aluminum outside the con-tainment area and with 0.010" stainless steel within the conwinment area.
5.11 All iacketine shall te of the fb..t tvoe and shall be fasterw+SN"_M
&ewsiliaign.
The jacket shall have taped longitudinal and end joints. Taped joints for ja ckets for pipe sizes up to 6 inch shall have a minimum overlap of 2 inch. 3 inch averlap for pipe sizes 8 inch and 10 inch, and 4 inch overlap for pipe sizes on 10 inch. Longitudinal joints on horizontal runs of pipe shall be arranged so that the upper sheet overlaps the lower sheet.
, k shall be arranged so that upper sections of the jacket overlap the lower section l For personnel protection all expo: ed corners of flat covering shall be trimmed l and fastened with rivets to the trimmed edge.
5.12 The lagging used on pipe bends, fittings. valves. flanges. etc . , shall be properly arranged to follow the contour of the fitting being covered, and secured w--yi t L"."*=-
5.13 The jackets on heaters shall be applied to both shell and head. The head covers and the insulation shall conform as close as possible to the contour of the heater head.
l Head covers shall be separate frorn shell covers and readily rernovable for maintenance of heaters without destruction of the insulation.
5.14 o The completed installation of weatherproof outer covering as specified above shall be guaranteed to provide adequate protection for tne insulation and to keep it )
dry under all normal climatic conditions existing in the locality.~of this installation.
5.15 All joints of outer covering for horizontal 11nes shall be located on the side of the pipe with laps turned downward.
[. o Page 5 of 10 Rev.1 - 4/17/~25
. . . 4 Pmr and lasmanni Specification No. 6750-M-33BC ommoe 5.16 Pioing
- a. All pipe up to and including 12 inch nominal diameter shall be covered with sectional insulating material made up in 36 inch sections having not more than two longitudinal joints. Insulating material for piping over 12 inch nominal size and on au bends may be made of segmental blocks molded to fit circumference of pipe,
- b. Where parallel pipes are on such close centers that separate covering of each pipe is impractical, the pipe may be coverered as a group.
- c. Where sectional or block covering is applied in two layers, each layer shall be securely wired on with No.16 BWG gauge innealed iron wire, using not less than threr, loops of wire per section on pipes up to 6 inches inclusive and not less than four loops on larger sizes.
5.17 Fittings and Valves Thebodies of fittings and valves shall be covered with the same theknesses as the insulation of the adjacent piping.
Insulation around Unit 2 valves shall be arranged so as not to interfere with future maintenance and repacking. The insulation installation shan allow for ea=y acc ess
(~ to the valves without resulting in damage to the lagging. ' Bolts .on fittings and valves
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for Unit 2 are to be left exposed. - -
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5.18 Flan ge s
. a. Where flange covering is required. flanges shall be covered with a sectional pipe insulatian to a thickness equal to that of the insulation on the adjacent piping.
- b. The sectional or block insulation shan be secured 'with No.16 B &S gauge Monel or stainless steel wire, and shall overlap the adjacent piping insulation to a minimum of 2 inches. Filler rings of the same material shall be provided. if necessary, to insure a good bearing on the piping insulation and on the periphefy of the flanges. Covers shan be finished to a smooth cylindrical form, and for each size of pipe ;
shall be uniform in width and diameter. Covers shall be of a design -
which will permit the flanges and bolts to heat up' quickly and be maintained at a temperature as nearly as possible equal to that of the pipe, thus avoiding excessive strains. The Subcontractor shan furnish for the approval of the Contractor, a sketch showing the proposed construction of these covers.
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Page 6 or- 10 R ev. 0 - 3 / 7 /.75
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P=r and :=d *=1 SpeciGcation No. 6750-M-338C giCgift povvi e
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Flanges shall in no case be permanently covered until the piping in which they are located has been tested and made tight. Flanges covered with Class I,' H, or HIInsulation shall be furnished with temporary covers for testing in order to avoid excessive temperature difference in the flanges and flange bolts. The test for tightness will normally consist of subjecting the piping to approximate operating conditions for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
- d. The temporary flange covers shall be applied and removed by the Subcontracto r. .
- e. At all flanged joints on piping and equipment the insulation shall be tapered-off at an angle of approximately 45 degrees on both sides of the joint for a length sufficient to permit removing flange bolts or studs without damage to the covering.
5.19 Ec uiome nt
. a. On all equipment requirbg insulation per this Subcontract, the insulation shall be held securely in place by No.16 B&S gauge Monel or stainless steel wire a:tached to metal clips or equivalent device.
k- b. Care shall be taken that binding wires are drawn up tightly and are securely fastened. On very large surfaces, either heavy wire or suitable metallic strips may be used for binding the insulation in place, and shall be drawn up by mechanical tightening devices. If necessary, the ends shall be secured by suitable tnechanical fasteners of a form which will permit a flat joint to be made.
- c. Subcontractor may use Nelson studs where approved by the Contractor's engine ers . .
- d. Insulation on Unit 2 equipment shall be arranged so as not to interfere with maintenance, and the installation shall allow for easy access without resulting in r'ama ge to the lagging. A removable cover shall be provided on Unit 2 pumps at all bolted joints.
5.20 Miscellaneous ,-
- a. On large, flat, or cylindrical surfaces, O. 016" aluminum jacket covering with vapor barrier shall be used except where other covering is specified, l' b. The Subcontractor shall furnish and attach all required wire, rods, etc. , as necessary for attachment to clips for proper application of the insulation.
- Page 7 of 10 Rev. 0 3/7/.75
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'*= d ih Specification No.
pgGgift % 6750-M-338C
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- 5. 21 Doors, Panels All ar. cess doors, removable panels, manhole covers, and other parts which must be opened or removed shall be insulated. The work on and adjacent to all removable parts shall be done in a cnanner that will minimize damage to the insulation, both on the parts removed, and on adjacent parts. Edges and corners shall be protected by light structural anglea or metal strips and wire mesh shall be employed where necessary to hold the insulation securely and permanently in p!see. Heads on heaters shall be fitted with removable type covering such that inspection can be made without disturbing the insulation on heaters.
5.22 Name olates Nameplates on all equipment which is insulated shan not be removed by the A Subcontractor. Alternate methods of exposing or replacing nameplates may
/1\ be used on approval of the Contractor's Superintendent or his designated repre s entative.
5.23 Reducers Reducers shall be covered with insulation of a thickness and quality equal to that of the larger pipe.
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5.24 Suitable and adequate means, acceptable to the Contractor shall be provided as required in all insulation for the effects of changes in temperature of the insulated surface and of any :netal used in supporting the insulation. Insulation on surfaces where appreciable thermal movement may be expected shan be applied in a manner which win avoid the occurrence of breaking or telescoping due to alternate periods of expansion and contraction. Field welds of clips for the support of insulation is not anowed on the Inain steam piping. If expansion joints in the insulation are used they should not be spaced less than 15 feet apart.The Subcontractor may vary the spacing of expansion joints, if necessary due to configuration, with approval of
! the Contractor.
l 5.25 All thermal insulation shall comply with applicable codes (latest revision) of American National Standards Institute, American Society for Testing and Materials and American Society of Mechanical Engineers. Also, construction shall comply with the laws of Maryland and with local ordinances.
}
5.26 In general, all piping and equipment operating at temperatures above 160F shall be completely insulated except where the Contractor specificaHy indicates that insulation shall be omitted or is to be insulated in part for. personnel protection.
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