ML20214W589
| ML20214W589 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 06/06/1987 |
| From: | Ellis J Citizens Association for Sound Energy |
| To: | NRC OFFICE OF THE SECRETARY (SECY) |
| Shared Package | |
| ML20214W563 | List: |
| References | |
| CPA, NUDOCS 8706160092 | |
| Download: ML20214W589 (59) | |
Text
-
C A S E == -
(CITIZENS ASSN. FOR SOUND ENERGY)
June 6, 1987 Docketing and Service Section Office of the Secretary U. 3. Nuclear Regulatory Comission Washington, D. C. 20555
Dear Sir:
Subject:
In the Matter of Texas Utilities Generating Company, et al.
Comanche Peak Steam Electric Station Units 1 and 2 Docket No. 50-445-CPA CASE's 6/6/87 Response to Applicants' Interrogatories to " Consolidated Intervenors" (Set No. 1987-1) and Motion for a Protective Order We are attaching hereto the signed and notarized affidavit of CASE President Mrs. Juanita Ellis, which was attached to subject filing.
Thank you.
Respectfully submitted, CASE (Citizens Association for Sound. Energy)
Y
uu nc tic UYmr j 157 JUN 10 N151 UNITED STATES OF AMERICA NUCLEAR REGUIATORY COMMISSION Q
sm:t>
- j; BEFORE THE ATOMIC SAFET) AND LICENSING-BOARD in the Matter of }{
}{ Docket No. 50-445-CPA TEXAS UTILITIES ELECTRIC }{
COMPANY, eli al. }{ (Application for a (Comanche Peak Steam Electric }{ Construction Permit)
Station, Units I and 2) }{
- - CERTIFICATE OF SERVICE By my signature below, I hereby certify that true' and correct copies of CASE's Response to Applicants' Interrogatories to " Consolidated Intervenors" (Set No.1987-1) and Motion for a Protective Order have been' sent to the names listed below this 6th day of June ,19 8__7,
, by: Federal Express where indicated by
- and First Class Mail elsewhere.
Administrative Judge Peter B. Bloch Thomas C. Dignan, Jr. , Esq. l U. S. Nuclear Regulatory Commission Ropes & Gray Atomic Safety & Licensing Board 225 Franklin Street Washington, D. C. 20555 Boston, Massachusetts 02110 Judge Elizabeth B. Johnson Oak Ridge National Laboratory Geary S. Mizuno, Esq..
P. O. Box X Building 3500 Office of Executive Legal Oak Ridge, Tennessee 37830 Director U. S. Nuclear Regulatory Dr. Kenneth A. McCollom Commission 1107 West Knapp Street Washington, D. C. 20555 Stillwater, Oklahoma 74075 Dr. Walter H. Jordan Chairman, Atomic Safety and Licensing 881 W. Outer Drive Board Panel
'0ak Ridge, Tennessee 37830 U. S. Huclear Regulatory Commission Washington, D. C. 20555 1
o**6 Chairman Renea Hicks, Esq.
Atomic Safety and Licensing Appeal Assistant Attorney General Board Panel Environmental Protection Division U. S. Nuclear Regulatory Commission Supreme Court Building Washington, D. C. 20555 Austin, Texas 78711 Mr. Robert Martin Anthony Z. Roissan, Esq.
Regional Administrator, Region IV 1401 New York Ave. , N.W. , Suite 600 U. S. Nuclear Regulatory Commission Washington, D. C. 20005 611 Ryan Plaza Dr., Suite 1000 Arlington, Texac 76011 Mr. Herman Alderman Lanny A. Sinkin Staff Engineer Christic Institute Advisory Committee for Reactor.
1324 North Capitol Street Safaguards (MS H-1016)
Washington, D. C. 20002 U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Dr. David H. Boltz
. 2012 S. Polk Dallas, Texas 75224 Robert A. Wooldridge, Esq.
Worsham, Forsythe, Sampels William Counsil, Vice President & Wooldridge Texas Utilities Generating Company 2001 Bryan Tower, Suite 3200 Skyway Tower Dallas, Texas 75201 400 North Olive St., L.B. 81 Dallas, Texas 75201 Robert A. Jablon, Esq.
Spiegel & McDiarmid Docketing and Service Section 1350 New York Avenue, N.W.
(3 copies) Washington, D. C. 20005-4798 Office of the Secretary U. S. Nuclear Regulatory Commission Ms. Nancy H. Williams Washington, D. C. 20555 Project Manager Cygna Energy Services Ms. Billie P. Garde 2121 N. California Blvd., Suite 390 Government Accountability Project Walnut Creek, California 94596 Midwest Office 104 E. Wisconsin - B Appleton, Wisconsin 54911-4897 Mark D. Nozette, Counselor at Law Heron, Burchette, Ruckert & Rothwell 1025 Thomas Jef f erson Street, E. W.,
Suite 700 Washington, D. C. 20007
,_ ll./!wei/J f b n) p/(Mrs.) Juanita Ellis,~ President
,/ CASE (Citizens Association for Sound Energy) 1426 S. Polk Dallas, Texas 75224 214/946-9446 i
2 I
+f +a anuq'o,, ..... UNITED STATES 8 n NUCLEAR REGULATORY COMMISSION
$ <E WASHINGTON, D. C. 20555 Itay 26, 1987 MEMORANDUM FOR: John Milligan Technassociates FROM: Emile L. Julian ting Chief Docketing and Service Branch
SUBJECT:
6 c.om M ctiE. PE A K P R i t F. E D I 4 4 c.emods Peak Any documents filed on the open record in the M pro-ceeding and made a part of the official hearing record as an exhibit is considered exempt from the provisions of the United
. States Copyright Act, unless it was originally filed under seal with the court expressly because of copyright concerns.
All of the documents sent to TI for processing fall within the exempt classification.
J r -, J o ' / ' d 7 CASE ATTACHMENT A AMERICAN NATIONAL STANDARD
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ANSIlMSS ,
1975 r Edition l l t .
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PIPE HANGERS AND SUPPORTS -
M ATERI ALS, DESIGN s
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Developed and Approved l
by the Stanufacturers Standardization Society
.;, ofthe J. Valve and Fittings Industry,Inc.
1815 North Fort Myer Drive Arlint, ton, Virginia 22:09 Originally Approved by MSS Sgteinber.1959 l Approved by ANSI S1arcli.1979
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- m. The requirements of this standard ucre developed by a cooperative effort er repre.
sentatives of pipe hanger ntanufacturers. Tncy are based on the best praetj;; current at this time and on proven results of the .research and experience of thisindusty ,
The metric units given in parenthesis and in Table Al were derived utilizing the following conversion factors.
Conversion Factor inches to millimeter 25.4
, KS1 to MPa 6.89 pounds to kilograms , 0.454 square inches to square millimeter 645.16 F to C F.3'
~
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1.8 First Edition 1959 Revised 1963 Revised 1967 Revised 1975 All MSS Stanca.-:s approved and prc.etices recommended are advisory only. There is not agreement to adhere to any MSS standard or recom- _
mended pra:ti:e and their use by anyone is entirely voluntary.
No pa.-: c' :his oo:ument may be reproduced in any form, in an electronic retrieval syste.v c' otherwise, without the prior written permission of the society.
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Copyright C.1975 by maufsetureri Standardi.:stion Society oftn:
V2hv and httinp industr> . Inc. f Printed in U.S.A.
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STANDARD PRACTICE SP-58 CONTENTS
.}
SECTION. PAGE FOREWORD . . . ... . ............. ........ i CONTENTS , . . ... .. ............ ..... .. E
- 1. SCOPE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
- 2. OBJ ECTIVES . . . . . . . . . . . . . . . . . . ........... 1
- 3. h!ATERIAL STANDARDS . .. .. ................... 2.
- 4. ALLOWABLE STRESSES AND TEh1PERATURES . . . . . . ... . . . . 2
- 5. REQUIREh!ENTS FOR h!ATERIAL FABRICATION OF STEEL MANGERS . . . . 2
- 6. PROTECTIVE COATINGS FOR CORROSION,, ABRASION AND ELECTROLYTIC RESISTANCE . . . . . . . . . . . h . . . . . ........ '8
- 7. Dl h! EN S I ON S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
- 8. SCREW TilREADS . . . . . ...................... 9
- 9. PROTECTION SADDLES AND SillELDS . ................. 10
- 10. SPRING SUPPORTS AND SWAY BRACES ....... ......... 10
- 11. SPRING DESIGN . .. . . ...................... 11
- 12. RESTRAINT CONTROL DEVICES ......... .......... 11
- 13. FINISillNG AND hlARKING . . . . . . . . . . . . . . ........ 11
- 14. I N S P ECTI O N . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
- 15. TESTING ... . .. . . ............ ......... 12 TABLE 1 - h!!NDIUh! DESIGN WORKING LOAD RATINGS . . . . ...... 1
-). i. A 1, ING OF T IR DED I OT IkOLi.E ST RO bSFdRht- ,
ING TO ASThi A36 74 or A575-73. . . . . . . . . . . . . . . 9 4 - DD1ENSIONS FOR PlPE COVERING PROTECTION SHIELDS. . .. . 10 Al - 51ATERIALS AND ALLOWABLE STRESSES,31ETRIC UNITS. . . . . 14.15 FIGURE 1 - TYPE CllART . . . . .... . . . . . . .......... 6, 7
'2 -- SOLID DESIGN STRESS (UNCORRECTED) FOR HOT WOUND COhlPRESSION SPRINGS . . . .. .. ........ . . 12 3 - WORKING DESIGN STRESS (UNCORRECTED) FOR COLD WOUND COh!PRESSION SPRINGS . . .. . . . ........... :3
- kNNEN Ae 31ATERIALS AND ALLOWABLE STRESSES, h!ETRIC UNITS. . . .
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- Speci,fications and standards of the.fqllowing organizations appe.ir in this list:
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. yr c ANSI Arnerican National Standards Institute 1430 Broadway, New York, New York 10018 Phone: A/C 212 868-1220
=
.y ASME The American Society of Mechanical Engineers i- . 345 East 47th Street, New York, New York 10017 -
Phone: A/C 212 644-7805 ASTM American Sxiety for Testing and Materials 1016 Race Street. Philadelphia. Penmylvania 19103 Y
Phone: A/C 215 569-4200 MSS Manufacturers SRndardization Society of the Valve and Fittings Industry,Inc.
1815 North Fort Myer Drive, Arlington. Virginia 22209 ~
Phone: A/C 703 525-8526 4
. National Bureau of Standards j Superintendant of Documents U.S. Government Printing Office, Washington, D.C. 20402 Spring Manufacturers Institute, Inc.
Box 959,24 Stearns Street, Bristol, Connecticut 06010 Phone: A/C 203 583-2403 1
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PIPE HANGERS AND SUPPORTS
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MATERIALS, DESIGN AND MANUFACTURE
- l. SCOPE -
1.4 Design and manufacture of these pro .
ducts must conform to codes, such as ANSI 1.1 This standard establishes the material, 831 Codes fcr Pressure Piping, ASME Boiler design, fabrication, inspection and testing cri. and Pressure Vessel Codes, orlocal building teria to be used in the manufacture of standard codes, where applicable.
types of pipe hanger components meeting the minimum design working loads and tempera- 1.5 Re:orr. ended selection and application ture ratings established in Table 1. of these prcJucts is provided in MSS SP-69.
1.2 Tlu. s standard also establishes design cri- (\.
l.6 Recommended guidelines for pipe sup-
, port contra:tural relationships are provided teria applicable to worku, ig loads and/or temp in MSS SP-77 eratures exceedmg the m, m tmum requirements of Table 1.
- 2. . OBJECTIVES 1.3 This standard includes design criteria 2.1 To se.se as a guide to proven industry forsprings and design characteristics for spiing practice with respect to pipe hanger material hangers. selection, design and manufacturing.
TABt.E 1 MINIMUM DESIGN WORKING LOAD R ATINGS' Applicable to all components of complete Notes:
assembly; including pipe attachment, g3 4 rod, fixtures and building attachment.
) Ratings at Normal ** ** E # * '*"E* *
. Nomm.al Tempuature Range, to 343C) for carbon steel and -20 to 450F (-29C Pipe or Tube to 231C) fer cast ar.d malleable iron (See Sub.
Size Pounds Kilograms section 4.5).
3/8 150 65 3. Minimum desim ratings are based on supporting I/2 150 65 15*-0"(4.57 meters) of standard weight steel 3/4 150 65 Pi Pe filled with water on continuous spans with-1 150 65 ut insulation or concentrated loads such as valves r risers, and with a minimum load rating of 1 1/4 150 65 150lbs. (65 Kg.).
I 1/2 150 65 2 150 65 4. Forloads greater than those tabulated. hanger
,,yj,
- 170 75 C mPonentload raungs shau & estabHsWy the manufacturer, provided design is in accord-3-- 210 95 ance with all criteria as outlined in this document.
3 1/2 250 110 4 300 135
- 5. Pipe attachment ratings for temperature ranges -
5 400 between 650 and 750F (343C to 395C) shall b:
180
, reduced by the ratio of allowable stress at 6 530 240 , service temperature to the allowable stress at 8 / 760 345 650F (343C).
10 . !L20 505
- 6. For services over 750F (398C), attachments 12 l480 670 n direct contact with the pipe shall be designed 14,__ _j _, ' 1710 775 to ::llowable stresses listed in Tables 2 and A1.
~ 16 2030 920 s 16 25SO 1170 20 2920 1325 24 ', 4180 1895 1
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2.2 To enable the user (by reference to this 4.3 Where otherwise not controlled by code (~ j document) to specify a minimum level of or specification, steel materials without estab- \
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acceptance for pipe hanger,_ design and-per .
'~ ~
lish'e d minimum tensile strength may be used
~
formance. .
at' te nperatures not exceeding 650F (343C).
~ ~ ~ ~ ' - ~
provided the stress does not exceed 9500 PSI :
2.3 To serve' as a companion document to.- . . .(65.4 MPa). ,
MSS SP-69 which provides recommendations .
for the selection and application of the types. 4.4 Threaded memberhnaking up an assem- !
illustrated in Figure 1, Type Chart. Hangers bly that may be done either entirely or par- t and supports shown on the Type Chart indi- tially in the field shall have a 25% reduction cate general types only and manufacturers' made in allowable stress, using root thread other standard products shall be acceptable area as a base. Threaded members that are under this standard if they meet dimensional completely assembled and load-rated by the and load rating limitations set forth in sub- manufacturer as a part of a production pro-sequent requirements. cedure need not be subjected to the 25% stress red'uction; strengths shall be based on root
- 3. MATERIAL STANDARDS thread area with full allowable stress.
3.1 Materials commonly used in manufactur- 4.5 Design temperatures for parts of hangers ing pipe hangers and supports are listed in and supports in direct contact with pipe shall Tables 2 and A1. be the temperature of the contained fluid.
Parts of hangers and sup; orts not in direct 3.1.1 Other materials may be used provided contact with pipe and exterior to any insula-they comply with the allowable stress require- tion may be designed for one third (1/3) ments of Subsection 4.2 or 4.3. fluid temperature or ambient temperature, whichever is greater. Alloy bolting within 3.2 Hangers and supports made of these ma- insulation may be furnished with ASTM (.
terials shall be designed and manufactured to A194-74, Class 2H nuts for line temperatures meet the requirements of this Standard and to 1050F (566C).
applicable service conditions. -
- 4. ALLOWABLE STRESSES AND , 5. REQUIREMENTS FOR MATERIAL TEMPERATURES FABRICATION OF STEEL HANGERS 4.1 Allowable stresses fc.r rnaterials com. 5.1 Fonning monly used in the design of pipe hangers and supports are listed in Tables 2 and A1. Ma. 5.1.1 Cold Forming may be performed on terials may not be used Wre the highest materials 0.5 inch (12.7mm) thick or less to temperature f5r which a stress value appears. a minimum inside radius of one times the
~
stock thickness. Cold forming may be per-4.1.1 Allowable stresses fer abnormal condi-. formed on material over 0.5 inch (12.7mm) tions shall be as designated by the applicable \ thick to a minimum inside radius of 2.5 times codes. the stock thickness. Material over 0.5 inch 4 '- (12.7mm) thick may be cold formed to an 4.2 Allowable stresses for materials not list. inside radius less than 2.5 times but not less ed in Tables 2 and Al with known physical than one times the stock thickness provided properties shall be determined as the lower heat treatment is~ performed as prescribed in of the following values: Subsection 5.1.4.
a) 1/4 of minimum tensile strength at scr- .
vice temperature. 5.1.2 IIeating material to 1300F (704C) or b) 5/8 of minimum yield strength at service less to facilitate the operation is to be con-temperature. sidered cold forming.
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ET/- 5.1.3 Hot forming may be performed on materials of any thickness to an inside radius 5.2 Welding ,
I less than 2.5 times, but not less than one times 5.2.1 Where required by code or specifica-thestock thickness within the following temp- tion, welding shall be performed to the spe- i erature ranges
- c fic applicable welding procedures which have !
been qualified in accordance with Section IX 0 Carbon Steel 1400F Min. 2000F Max. of the ASME Boiler and Pressure Vessel ;
(760C) (1093C) Code.
Chrome-Moly 1550F Min. 2000F. Max.
Alloy Steel (843C) (1093C) 5.2.2 Where required by code or specifica- ~,
tion, manual welds, including tack welds not Austenitic 1400F Min. 2100F Max. ,
Stainless (1148C)
\. removed or absorbed m subsequent welds, ,
(760C) and machme welding, exclusive of res,istance ;
Steel welding, shall be performed by welders quali- -
fled in a:ccrdance with the applicable test Material is to be held at temperature for one requirements of Section IX of the ASME hour per inch of thickness but not less than B ilerandPressure Vessel Code. Each welder's one hour. Material shall not be heated in bun- certificate scali be on file at the work site dies or closed stacks for other than induction and availsble, upon request, to authon, zed type furnaces but shall be separated to allow inspection personnel, good circulation within the furnaces. Mater-ials should not be heated above the maximum 5.2.3 Attachments welded directly to the temperature shown. No forming operation pipe must be of appropriate (compatible) shall be performed below the minimum temp- chemical ecmposition and the process of erature shown. Carbon steel and chrome-moly attachment must conform to the requirements alloy steel shall be coo, led in still air. Water for fabri:ation of the pipe as regards pre-quenching is not permitted. Cooling of stain-
) heating. welding, and stress relieving. 8 less steel other than still air cooling, may be accomplished as per ASTM A403-73 Para- 5.2.4 Preheating of materials to be welded is graph 5. required if they fall into one of the following categories:
- 1) Carbon Steel with specified ladle analy-5.1.4 Heat treatment, when required of car- sis of carbon content greater than 0.307c, or bon steel and chrome-moly alloy steel shall be with a weld joint thickness greater than 1 done within the temperature ranges shown inch (25.4mm) shall be preheated to a mini-below. The material is to be held at tempera- mum temperature of 175F (80C).
ture for one hour per inch of thickness, but 2) Low chrome-moly alloy steel with a not less than one hour, followed by slow weld joint thickness greater than 0.38 inch
.TJ .~ . ' cooling in furnace or still air. (9.6mm) shall be preheated to 400F (205C)
~~~
Min. to 600F (315C) Max.
l ' ' ' " farbon Sieel 1100F Min. 1250F Max.
5.2.5 Post heating of welded materials is (593C) (676C) required if the materials fall into one of the Chrome-Moly 1300F Min. 1400F Max. following categories:
Alloy Steel (704C) (760C)
- 1) Carbon steel with a single or double 25 . butt weld total thickness, or a fillet weld 5.1.5 A cirbidersolution heat treatment; of throat thickness greater than 0.75 inch (19.0 austenitic stainless steel, when required by mm) shall be stress relieved by full furnace l
- -- design specification, shall be performed as or local heating to a temperature of 1100F prescribed by ASTM A403-73, Paragraph 5. (593C) Min. to 1250F (676C) Max with a l
holding time of one hour per inch of base 5.1.6 Formed components may be furnished material thickness, but not less than one hour,
) in "as formed" condition without any fur- followed by slow cooling in the furnace or ther mechanical work. still air.
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a, TABLE 2 MATERIALS AND ALLOWABLE STRESSES -
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STANDAllD PRACTICE SP-58
- 2) Chrome-moly alloy steel with a sim;le conditions. In general only such coatings or double butt weld rotal thickness, or a fiht .eith good adhesive quality. namely, that do weld throat thlehnes> yreater than 0.5. inch :.o: lifL peel or chip when s.ratched and that (12.7mm) shall be stressYeIM.id bj full tur- will wnhsrand reasonabig rough handling nace or local heating to a temperature of should be used. Non-meta!!ie coatings are 1300F G04C1)lin. to 1490F (760C) h!;x not so; table for tiireade.1 ;'roducts that are with a bolding temperature of one heur per to be assembled af ter coiting.
inch ,of base material thickne s. bm wt less , $, than one hour, followed by . slaw et o!i% in 6.3 Non-metallic coatilips, jabhets and liners the furnace or still air. to prevent abrasion of glass or plastic pipe.
- 3) Stainless steel having a carbide solution etc.. shall be applied in accordance with man-heat treatment required by the design speci- ufacturers recommendations.
fication shall be treated according to the pro-cedures of ASDI A403-73, Paragraph 5. 6.4 Non-metallic coatings, Jackets and liners for electrolytic resistance shall have dielectrie
- 6. PROTECTIVE COATINGS FOR strength suitable for the intended use.
CORROSION, ABRASION AND ELECTROLYTIC RESISTANCE -
- 7. D15fENSIONS 6.1 Afetallic Coatings for corrosion resistance may be applied by either electroplating or 7.1 Unprotected flat steel bands shall have hot dipping. a minimum thickness.of 0.12 inch (3.2mm) and a minimum width of 1 inch (25.4mm).
6.1.1 Electro plating shall be in accordance As an exception for pipe sizes 1 and smaller, with ASThi A164-71 or Alef-71 for the the minimum cross section shall be 0.06 specific coating used. Plating thi:knesses less inch (1.6mm) X 0.75 inch (19.Inun). Equiva-than 0.0002 inches (0.005 rnm) shall not be lent cross sections may be substituted pro- ( used for corrosion protection. To avoid diffi- vided the minimum thickness is not decreased. culty in assembling threaded pris that are plated, it is recommended tha: female ma' chine 7.2 Ilanger Types 7,9 and 10 that meet with threads be tapped oversize by an amount equal tabulated load requirements of Table I nnd to four times the maximum ;iatin; thickness. that have protective coatings in accordance It is not permissible to rethreas male parts with Subsection 6.1.1 need not conform to after plating. It is standard pra: nee fer female minimum dimensional requirements of Sulw threads to be uncoated. section 7.1. 6.1. 2 Ilot dip galvanizing s.ul! te done in 7.3 Ilanger rods made of ASThi A36-74 or accordance with AST.\1 A153 3 or A386-73. A575-73 shall have load carrying capacities To avoid difficulty in assembling threaded as listed in Table 3. Ilanger rods shall be parts, it is recommended 6t ms!e parts be minimum 0.37 inch (9.6mm) diameter and shaken, spun or hand t.usned to remove. shall be limited to pipe or tubing sizes 2 and spelter lumps from the threr.s. Female mach- less. For pipe and tubing sizes 2.5 and greater ine threads may be tapped ov:: size to accom- the rod diameter shall be not less than 0.5 modate the rnale thread. inch (12.7mm). 6.1.3 Protective shields (Type *0) may be 7.4 Eye rods shall have a minimum inside manufactured from pre-gah.c.; zed sheet meet- diameter of eye 0.12 inch (3.2mm) larger ing the requirements of ASDI A526-71. than nominal rod size. 6.2 Non-hietallic coatings sr.all be of types 7.4.1 Forged eye rods shall have a metal selected for specific purpcses. Coatings shall area across the eye equal to 1.25 times the be applied by acceptable practices for the crea of the rod and shall have capacities ( type involved. Thickness shall be determined equal to those shown in Table 3 for the same by nature of product coated and/or service nominal diameter. i ., 15 S STANDARD PRACTICE SP-58 TABLE 3 1.OAD RATINGS OF THREADED HOT ROLLED STEEL ROD ],/. CONFORMING TO ASTM A3674 or A575 73 Nominal Rod Root Area of ^* **P Diameter Thread 650F (343Cl Inch, mm Sq. Inch Sq. mm
- Pounds Kg 3/8 9.6 0.068 43.8 610 275 Nc:: : ,
1/2 12.7 0.126 81.3 1130 515
- 1. F.c:'s 3 inch (76.2mm) and 5/8 15.8 0.202 130.3 1810 820 .:r;er shall be ASTM A36 74 3/4 19.0 0.302 194.8 2710 1230 er A576 71.
7/8 22.2 0.419 270.3 3770 1710 1 Forload rating of threaded 1 25.4 0.552 356.1 4960 2250 muerials, other than ASTM i1/4 31.8 0.889 573.5 8000 3630 A36 74, A575 73, and - 11/2 38.1 1.293_ 834.2 11630 5280 A576-71, see requir:ments 44.4 1.744 II25 15690 7120 ,f Subsection 4.4 :nd Tables 13/4 2 50.8 2.292 1479 20690 9390 2 and Al. 21/4 57.2- 3.021 1949 27200 12350 3. Tabulatedloads are based 21/2 63.5 3.716- 2397 33500 15200 l on an allowable tensile stress 18590 j of 12,000 psi (82.7 MPa) 23/4 69.8 4.619 2980 41600 3 '76.2 5.621 3626 50600 22970 l erence Subsection 4.4). 31/4 82.6 6.720 4435 60500 27460 I ' 31/2 88.9 7.918 5103 71260 32350 33/4 95.2 9.214 5945 82900 37640 4- 101.6 10.608 6844 95500 43360 41/4 108.0 12.100 7806 10S900 49440 41/2 114.3 13.690 8832 123200 55930 43/4 120.6 15.379 9922 138400 62830 5 127.0 17.165 11074 154500 70140 ~ - 7.4.2 Formed and welded eye rods shall and UNC 2B for the coarse thread series and have a circumferential length of weld not 8N 2A or 2B for the eight thread series. less than twice the rod diameter and shall have capacities equal to those shown in Table 3 for the same nominal diameter. Formed but 8.2 Threads for supports such as Type 38 not welded eve rods shall have load ratings shall be ANSI Std. B2.1-1968 NPSM for not greater than 50% of those in Table 3 Standard Straight Pipe Threads. for the samJ no~ilinal diameter. , S. ' SCREW TbREEDS S. .' Special thread forms and fits other than - ~ sps .iGed by Subsection 8.1 shall be used only 8.1 Screw th* reads shall be in conformance wl:en both male 'and female members are .)/ with ANSI 111.1-1974 or National Ilureau of furnished as part of a permanent assembly Standards llandbook 11-28, UNC l A or 2A or in cases listed in Section 6. o SISS ' STANDARD PRACTICE SP-58 I
- 9. PROTECflON SADDLES AND SHIELDS 10. SPRING SUPPORTS AND SWAY BRACES
( 9.1 Pipe covering protection saddles (Type 10.1. Spring supports are divided into three
- 39) used with high temperature insulation classes; Spring Cushion, Variable Support, and shall be made of material as follows: For C onstant Support. ,
size 5 IPS arid smaller the minimum metal - - thickness shall be 0.12 inch (3.2mm); for 10.1.1 Spring CushiontSupports (Types 48 size 6 IPS and larger the minimum metal- and 49). This class is lHiiited to those using thickness shall be 0.19 inch (4.8mm). Sad- springs having a 2 inch (Simm) or less total dies shall have sufficient depth for the in- deflection and which are not provided with sulation thickness required and shall be not- load or travel indication. Springs shall be ched on each side so that saddle contact with confined so that accidental release of load pipe is approximately 50Tc. All standard is impossible. Travel limit stops need not be saddles shall be 12 inch (305mm) in axial provided. length and shall span an are of approximately 60'. Saddles for 12 inches (305mm) and larg- 10.1.2 Variable spring supports (Types'51, er pipe shall have center rib. Standard sad- 52 and 53). This class applies to all variable dies shall accommodate simplified thickness effort type spring supports. Supports in this of pipe insulation for nominal sizes 1,1%, class shall have load and travel scales with 2,2%,3,4 and 5 covering. provisions for marking " hot"and" cold"posi-tions. Limit stops shall be provided to prevent 9.2 Pipe covering protection shields (Type excessive travel from overstressing the spring.
- 40) for low compressive strength insulation,
, or release of load. A properly designed con-if used without high compressive strength fined compression spring will serve as such inserts, shall have dimensions not less than a stop. Where stops for hydrostatic test pur-given in Table 4, and shall span r.n are of 180'. poses are provided, the unit shall be capable / Where a section of high compressive strength of supporting up to 2 times the normal oper- \ insulation is used as an insert for a shield, ating load. Springs for this class shall have or as a saddle without a shield, the insulation characteristics so that use at the maximum shall be at least as long as the metal shield recommended pipe trasel results in a varia-or hanger width. Where a vapcr barrier is bility factor of not more than 25%. required, the insulation and!cr vapor barrier shall extend two inches beyond the shield variabinty * ~ Pse travelin(mm) X spring rate Ibs!in (Kg/mm) or hanger strap, and overlap the outside cir- ractor operarmg icad tbs (Ks) cumference by two inches. 10.1.3 Constant Supports (Types 54,55 and 56). This class applies to all constant effort type spring supports where the variable spring TABLE 4 DIMENSIONS FOR P:PE COVERING force is compensated either mechanically or PROTECTION SHiE' OS by auxiliary springs to result in a mean s variability (deviation)mincluding friction of Nom. Pipe or Length Gace t not more than 6% throughout total travel l Tubing Size laches Millime:s:si Thickness range. These supports shall be provided with ' a position scale, a load adjustment scale, pro-vision for field load adjustment of at least % thru 3% 12 305 18 107c, provisions for " hot" and "cald" 4 12 305 16 position markings, limit stops to prevent'over _ 5&6 18 457 16 8 thru 14 24 610 14 16 thru 24 24 610 12 moeviation is the sum or unematie triction and manufacturins tolerance factor. Determination or desistion is by load test mach-ine and is calcutated as in Equation 1: Table 4 is based on 15 psi compressive strength ,g insulation, for other compressive strengths be- stax. reading moving dow n - Min. rcading movint up low 15 psi dimensions shall be increased. Deviation stas. reaairy: movmg down + Mm. reading movmr up 10 '. AlhS STANDARD PRACTICE SP-58 g ' travel or release of. load, and auxiliary stops slits, or_ quench cracks deeper than 3% of bar .J_ '(where required) for crection and hydrostatic diameter shall be rejected. The depth of
- test purposes. Where stops for _ hydrostatic defect shall be determined by grinding and test purposes'are provided, the unit shall be blending and measuring the minimum diame-capable of supporting up to 2 times the nor- ter of bar remaining.
mal operating load. I1.4.1 Heli:al Cold Wound Springs 10.2 Sway Brace (Type 50). This class in-cludes spring devices designed to control un- 11.4.1 Compression springs shall be designed desirable pipe movement and also provide so that maximum uncorrected working stress forces to restore pipe to normal operating shall .not ex:eed thost shown on the chart, - position. They shall consist of one or more Figure 3. by more than 10%. Working stresses springs, suitably confined and may be either (uncorrected) for extension springs shall be single or double acting. limited to 50~: of chart values. I1. SPRING DESIGN 11.4.2 Sprir.gs shall be manufactured in ac-cordance with Spring AfanufacturersInstitute, 11.1 Structural components of all classes of Inc., Standard for Compression, Extension, spring supports and sway braces noted in . Torsion 2.d Flat Springs. Section 10 shall be designed as specified elsewhere in this standard except that springs i1.5 Springs may be electroplated for cor-shall be designed as follows: rosion prc:e: tion provided proper procedures to avcid embrittlement are observed in ac-11.2 Springs for pipe supports are generally c rdan:e with ASThi B242-71. Afaximum of the helical coil type. Compression springs, allower.e ucrkm, g stress shall be reduced 15% unicss suitably guided, shall have a free lencth when 2: signing such springs. Non-metalhe to coil diameter (O.D) ratio not greater tlian coatin.n shfl be applied for cerrosion pro- ) 4:1. Special forms of springs such as leaf, tection wherever possible to avoid inherent-disc, volute, involute, torsion, and the like electrer!2nn; difficulties. may be used. Such forms, when used, are to be designed and manufactured in accordance 12. RESTRAINT CONTROL DEVICES with acceptable commercial practices. 12.1 Hydraulic devices for the control of I1.3 IIelical Hot Wound Springs. vibration or shock may be piston or rotat-ing vane type and shall be designed in ac- ,. I1.3.1 Springs shall be designed so that m,x- cordance with good commercial practice. It ~imum uncorrected solid stressulfor compras- is recommended that a non-ft:.mmable fluid sion springs and maximum uncorrected design be used. . . s' tress (calculated) for extension springs shall '~ ~ ' not exceed those shown on the chart, Figure ~ 12.2 Alechanical devices for the control of
- 2. by more than 10%. Working stresses (un- vibration and shock shall be designed in ac-correctedi shall be 807c of chart values. cordance with the requirements of Section 4.
Alaterials shall be suitable for the intended 11.3.2 Springs shall be manufactured in ae- service and ambient conditions. cordance with ASTN1 A125-73. ,a 13. FINISHING AND SIARKING 11.3.3 Alhiy rpaings of 1.5 inch (38.1mm) and larger bar diameter shall be inspected 13.1 IIangers and supports shall be finished after heat treatment by the magnetic particle in accordance with the manufacturer's best or equivalent 1nethod. Springs with seams, standard practice. I
- d hinimum uncorrected whJ stress is a calculaico stress without wrrection fer curvature.
II F MSS' STANDARD PRACTICE SP-58 10 2 20.3 30.5 BAR DI AMETER - MILLIMETERS 61.o - 71.1 81.3 91.4 101.6 f .406 _ 50 8 i2o w u. _.._. ..... ....t. .......:......... .. ... 5 .. _ . . . . no r......_..,._.. ._. _... ~.. ..........._ _...... ... . . . . . ..._. . _.. _.. . . ...... . _.......................L_..._....-. ..... .. ... i a..._.. x . . . _ . . . . .. 760 l 11 0 - . .,. n %......._.......___......_.......t._......_. 1......._.1 ._.......... ..... .. ~. ... ,,. .. . . _ o ...t - . ..t _ _m.. c. c- - o o ; -............ .. . . . - - A L L O ~ ~ ---........ ... .__..,_....;.._.._....__..........s...=_._ Y. STEEL. . . . . ASTM . _ . . A ... 689-74 _......6 ...... .s. i -r-------_-~~~~- o 1,0 - ~ ~~ -~ -*' 690 m m m. m i . .. .....6.........l .. .. . . . . .. ....... 5 ..... ..}.- ... . . . . . . ...... ~ . ....,.
- 1. .- u r . .......... =
. = . . . . ..u. o : .e .._.. w t .v . . . . . + _ . . . :. : _ 6-g t. m 90 _. 4 bt ... _.. _ .. _.... ... _ .!. m G20 o. 1..... p_...._....,. .. . - . . .ao . _ - _ o. ~~*b'*~~~t....._.,- .. . . . -a __ . .~. ~~ ~ ~ o ** **'~ '% i m g----,. 5 2 80 Q CARBON STEEL ASTM A 689 -74 . . . . ! 550 " 3 .s ... ... ... i .... ... :.-- 2_ - ...~..~~_.._-...-....--.t...*..... . . -.. .. . h . 4 x . x ... . .. ... _... .~~.4 . < ._ ._ .......... ...$._... . .,. . . . ... ~ . . _. ... __~._... . _ .... 1 s s -. 70 480 ....u _ . _y ? ; ' ~ ~ ~ " " 60 410 ,% .8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0 S AR DIAMETER-INCHES SOLID DEStGN STRESS (U';0 C R R E C TE D ) FOR HOT WOUND COMPRESSION SPRINGS FIGURE 2 13.2 On cast hangers or s'.:pperts. the name, 14. INSPECTION - Units shall be inspected in initial or other identifyin; ma-k may be legi. accordance with the established quality con-bly cast on each piece. On fabri:ated hangers trol procedures of the manufacturer. and supports the name or mark may be die stamped on a main memeer. ihis marking 15. TESTING - Any physical or non-destructive may be omitted if it canr.ot be incorporated testing of units or parts thereof beyond that into the regular production process without required for normal production control, shall additional operational steps, and should be be the responsibility of the purchaser. omitted where it may impair the strength. 13.3 Steel or malleable iren hangers sized for copper tubing may be :cppu plated only for identific:rtion pur; ses. ( 5fSS STANDARD PRACTICE SP.58 WIRE DIAMETER -MILLIMETERS 2.5 5.1 7. 6 10.2 12.7 !". 2 17.8 130 i-. i 3i, i 1 , 3, ; ii , 900 . I.i .. 'II i i s # iY I I . Ia II' I i a . I I i I; I : I II I'I i i I . I- i I i i e 3 ' f' i I i i ' P '1 1 . . I 1.' I : I r4 i t lii 1I : I r . ._ i ' i '~ ' 830 12 0 i i , ,i i i ! 'gfl.sy, , Tit i i , j ^i 4 . i, i i i . i: . 1 ': 1A 11 1 I . i < _ . 2 I 'l ' i ik 1 . .i. ! I ' I t .' I. L i e NOW4' .. - + i, 1 7 llo ' \ . - - - 760 Q- , . ;- '!i: 4-t r- + H+-t t ! . E o A-+ lid . .i. ! I' i' I t I
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r -- j LIST OF MSS STANDARD PRACTICES j NUMBER -SP. 61974 Standard Finishes for Contact Faces of Pipe Flanges and Connecting End Flanges of. Valves and Fittings SP 91977 Spot Facing for Bronze, iron and Steel Flanges ( SP.25-1978 Standard-Marking Systeriifor Valves, Fittings, Flanges and Unions SP 421978 Corrosion Resistant Gate, Globe, Angle and Check Valves with Flanged - and ButtWeld Ends - SP-431976 Wrought Stainless Steel Butt-Welding Fittings ,,, , SP-44-1975 Steel Pipe Line Flanges m: , J SP 451976 Bypass and Drain Connection Standard (formerly SP 5 and SP-28) SP 51 1978 Class 150LW Corrosion Resistant Cas-t Flanges and Flanged Fittings SP 53-1971 Quality Standard for E: eel Castings - Dry Particle Magnetic inspection Method SP 54-1978 - Quality Standard for Steel Castings - Radiographic Inspection Method -SP 55-1971 Quality Standard for Steel Castings -- Visual Method , (R 1975) .
- SP 58-1975 Pipe Hangers and Supports - Materials, Design and Manufacture SP-60-1976 Connecting Flange Joint Between Tapping Sleeves and Tapping Valves -
SP 61 1977 Pressure Testing of Steel Valves SP 65-1977 High Pressure Chemical Industry Flanges and Threaded Stubs for Use with Lens Gaskets SP 671976 Butterfly Valves SP-69-1976 Pipe Hangers and Supports - Selecti6n and Application SP 70-1976 Cast iron Gate Valves, Flanged and Threaded Ends SP 71 1976 Cast Iron Swing Check Valves, Flanged and Threaded Ends SP-72-1970 Ball Valves with Flanged or Butt-Welding Ends for General Service , SP-73-1978 Silver Brazin; Joints for Wrought and Cast Solder Joint Fittings k SP 75-1976 Specification for High Test Wrought Welding Fittings, with 1978 Addenda SP-77-1971 Guidelines for Pi; e Support Contractual Relationships (R 1978) SP-78-1977 Cast Iron Piug Valves. Flanged and Threaded Ends SP-79-1974 Socket-We' ding Reducer Inserts SP-80-1974 Bronze Gate, Giose, Angle and Check Valves SP-81 1975 Stainless Stee!, Ecnnetiess, Flanged, Wafer, Knife Gate Valves SP-82-1976 Valve Pressure Testing Methods SP-83-1976 Carbon Steel ?ipe Unions, Socket Welding and Threaded SP-841978 Steel Valves Socket Welding and Threaded Ends SP 85-1976 Cast Iron G;cte & Angle Valves Flanged and Threaded Ends SP-86-1977 MSS Guidelines fer Metric Data in Standards for Valves, Flanges, and SP 87-1977 Fittings ( Factory-Mace Butt Welding Fittings for Class ! Nuclear Piping , Applications, with 1978 Addenda SP 88-1978 Diaphrag.T Tyne Valves - SP-89-1978 Pipe Han;ers and Supports - Fabrication and installation Practices
- Approved by ANsl Metric units .nc.uded in all s.a ar:s except SP-72 R Year -Ind*:stes year stanca : rsaffirmed without substantwo enance Prices availabie upon reques:
A large number of former MSS Standard Practices have been approved by the ANSI as ANSI Standa ds, published :y cthers. In order to maintain a single source of authorita-tive information, tne MSS v.!thdraws its Standard Practices in such cases. MANUFACTURERS STANDARDIZATION SOCIETY OF THE VALVE AND F!TTINGS INDUSTRY, INC. 1815 NORTH FORT MYER DRIVE AR LINGTON. VA. 22209 r .. ( "O { C 'O ' CASE ATTACHMEN[ P3 ,- ST AN D A R D P R ACTICE \ 1976 -. _ . Edition __ Si 4 j ._ t . g q p.m .r,.ak - r E-7ma ? . - .. - ~.. PIPE HANGERS AND SUPPORTS- SELECT 10N AND APPLICATl0N Developed and Approved by the Manufacturers Standardization Society ofthe Valve and Fittings Industry,Inc. 5203 Leesburg Pie, Suite 502 Arlington, Virginia 22209 \ J Originally Approved July 1966 F MSS STA.NDARD PRACTICE SP-69 ( ~ FOREWORD The requirements of this standard were developed by a cooperative effort $f , representatives of pipe hanger manuf acturers. They are based on the best practice current at this time and on proven results of the research and experience of this industry. The metric units given in parenthesis were derived utilizing the following conver-sion factors, and rounded as appropriate. Conversion F actor inches to millimeters 25.4 , feet to meters 0.3048 PSI to kPa 6.89 F-32 F to C C= 1.8 First Edition 1966 Revised 1976 (. An MSS Standa-d Pra:t:ce is intended as a basis for common practice b'/ the manufacturer, the usar, and the general public. The existence of an MSS Standard Practice does nct in itsa:f preclude the manufacture, safe, or use of products not conforming to tne Sul:ard Practice. Mandatory conformance is established only by reference in a co::e, specification, sales contract, or public law. No part of this occument may be reproduced in any form,in an electronic re-trieval system or omer, vise, without the prior written pennission of the Society. 4 Copyright c 1976 by Manufacture rs Standardaation Society of the Valve and Fittings industry. Inc. Printed in U.S. A. i o F MSS STANDARD PRACTICE SP 69 s CONTENTS FO R EW O R D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... ..... i CONTE NTS . . . . . . . . . . . . . . . . . . . ........... ... . ... ... . ii ORGANIZATIONAL SPECIFICATIONS AND STANDARDS. ... ... iii I . SCOPE AND OBJ ECTIVES . . . . . . . . . . . . . . . . ... . .. ... . ... I
- 2. CLASSIFICATION OF PIPING SYSTEMS. . . . . . . . . . . . . ....... . 1
- 3. GENERAL REQUIREMENTS . . . . . . . . .. .. ... .... I
- 4. MATERI AL REQUIREMENTS . . . . . . . . . y. . . . . .... ........ . ......... . 2
- 5. DIMENSIONAL REQUIREMENTS . ......... ...... .. .. ..... . 2
- 6. SELECTION OF HANGERS AND SUPPORTS FOR PIPE MOVEMENT. . . . . . . 2
- 7. IIANGER AND SUPPORT SELECTION ........ .. . ....... . S
- 8. ATTACilMENTS MADE BY WELDING OR BOLTING. ... .. 5
- 9. IIANGER AND SUPPORT SPACING. . . . . . . . . . . . .. . . .. ... 7
- 10. PIPE ATTACllMENTS FOR INSULATED LINES. . . . .. . 7
- 11. MULTIPLE SUPPORTS . . . . . . . .................. . ....... 7
- 12. RISER SUPPORTS . . . . . . . . . . . . . . .... . . . ..... .. 7
- 13. ANCIIORS, GUIDES AND RESTRAINTS . . . . . . . . . . . . ......... 7
- 14. FIRE PROTECTION SYSTEMS . . . . . . . . . . . . . . .... . ......... .. 8
} 17. ASBESTOS CEMENT PIPING . . . . . . .... . .
- 18. G L ASS PI PI NG . . . . . . . . . . . . . . . . . . . . . . . . . . . .
...... 9 8
- 19. PLASTIC PIPING . . . . . . . . . . . . . . . .. .. .. .. . .. .... .. . 9
- 20. FIBERGLASS REINFORCED PIPE (FRP). . . . . .. .... .... .... 9 TABLE I - HANGER AND SUPPORT SELECTIONS . . . . . . ....... . ... . 3 2 - SPRING SUPPORT SELECTION . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 - MAXIMUM PIPE IIANGER AND SUPPORT SPACING . . .. . .. . 6 4 - MINIMUM ROD DIAMETER FOR SINGLE ROD llANGERS . . . . . . . 8
,_ ., 5 - TYPE 40 PROTECTION SillELD FOR VAPOR BARRIER INSULATED 1 PIPE AND TUBING . . . . . . . . . ........ . .... .. ............ 9 FIGURE I - TYPE CIIART. . . . . . . . . . . . . . . .. . . .. .... .... .. 4 a
- e. e e e
b , m . ii m-- MSS STANDARD PRACTICE SP-69 .( Specifications and standards of the following organizations appear in this standard. . AISC' ~ American Institute of Steel Construction, Inc. 1221 Avenue of the Americas e, New York, N.Y.10020 F - ANSI American National Standards Institute 1430 Broadway, New York, New York 10018 Factory Mutual Engineering Corporation 1151 Boston-Providence Turnpike, Norwood, M A 02062 Federal Specifications: Superintendent of Documents United States Government Printing Office, Washington, D.C. 20402 MSS Manufacturers Standardization Society of the Valve y and Fittings Industry 5203 Leesburg Pike, Suite 502, Falls Church, Virginia 22041 NFPA National Fire Prote: tion Association 470 Atlantic Avenue, Boston,MA 02210 PFI Pipe Fabrication lastitute 1326 Freepor: Road, Pittsburgh, PA 15238 - , v: UL Underwriters Laboratories 207 East Ohio Street, Chicago,IL 60611 m $jy h ~ MS5 MSTANDARD PRACTICE . SP-69 c ~ PI' PE IIANGERS AND SUPPORTS - SELECTION AND APPLICATION n *4- Factory Mutual Engineering Division
- 1. / , SCOPE AND OBIECTIVES Bunctin 2 Installing Sprinkler l.1 This standard relates to the selection Equipment.
and application of pipe hangers and supports for all service temperatures, llangus and sup. 2. CLASSIFICATION' OF PIPING SYSTEMS - - ports noted herein, are the ty; es specified in' For the purpose of pipf hanger and support MSS SP-!8 Pipe Hangers and' Supports, Ma- g selection, this dccument establishes an identifi-terial, Design and Mandf actured Reference is \. cation of piping systems according to the also made to other pipe supporting and con- operating (sersice) temperatures of the pipe tiolling elements such as gtides, restraints,and ' contents as fellows: anchors. 2.1 Hot Systems 1.2 The objectives of this standard are; L, A-1. I 20F (49C) to 450F (232C) a) To serve in the engineering design, A-2, 4fiF (233C) to 750F (398C) in whole or in part, asa pipe hanger and . A-3. Over 750 F (399C) support specification by reference to this . document. 2.2. Ambient Systems b) To serve as a guide to proven industry practice. during engineering design and B. 60F (16C) to 119F (48C) writing of job specifications covering the -) hanging, supporting,and controlling the 2.3 Cold Systems movement of pipir. systems. c) To provide the erector with informa- C 1. 33F (1C) ta 59F (15C) tion on types of hanger and support com- C-2. 2F (-29C) to 32F (OC) ponents to be used for specific applica- C-3. Below -2F (-29C) tions and installations, where such infor-
- mation is not otherwise provided.
- 3. GENERAL REQUIREMENTS 1.3 This is a basic standard practice. However, it may be subject to changes and/or elabora- 3.1 The selection of pipe hangers and sup-
~; , ,ti6n by the design engineer. ports shall be based upon the overall design concept of the piping systems and any special ' ~ ~ l 4 Other' d'ocuments governing pipe hangers requirements which may be called for in the and supports may be spec'.fied to take prece- specifications. The supporting systems shall dence, in whole or in part, over this document. provide for and control the free or intended Examples: movement of the piping including its movement ANSI B31 Codes for Pressure Piping. in relation to that of connected equipment. f Federal 3 Specification WW-H-171 (latest issue) - Hangers and Sup- 3.2 A careful study shall be made of the ~ ports Pipe. - -- piping layout in relation to the surrounding Underwriters Laboratories,Inc. structure and adjacent piping and equipment Standard UL-203-Pipe llanger before selecting the type support to be used at i ~ " Equipment. each hanger point. ) I . . . MSS . STANDARD PRACrlCE ~ SP-69 ( 3.3 , Hangers, supports; anEliors anirestraints - 4.2 The material in , contact with the pipe shall be selected to withstand all static and shall be compatible with the piping material dynamic. conditions of. loading to which the. so that neither shall hase a deteriorating action - piping and associated equipment may be on the other. p. subjected. E' . ., 4.3 Materials subject to corrosion or electro-3.4. Load calculations,- where required by lysis shal!~ be protected as specified by the en-specification, shall give consideration to the gineering design and such protection shall be followmg: applied in accordance with the requirements of MSS SP-58. -a )' Weights of pipe, valves, fittings, in-sulating materials, suspended hanger com- - ponents, and ' normal fluid contents.
- 5. DIMENSIONAL REQUIREMENTS b) Weight of hydrostatic test' fluid or cleaning fluid if normal operating fluid 5.1 Hangers and supports shall be sized to contents are lighter. fit the outside diameter of pipe, tubing, or, if specified, the outside diameter ofinsulation.
c) Use of restraints against normal thermal movement. 5.2 Hangers for the suspension of Size 2% and larger pipe and tubing shall be capable d) The effects of anchors and restraints of vertical adjustment under load. , -to provide for the intended operation of I; - expansion joints. e) Reaction forces due to operation of 6. SELECTION OF HANGERS AND SUPPORTS safety or relief valves. FOR PIPE MOVEMENT f) Wind, snow or ice loadings on cittdoor 6.1 The selection of hangers and supports E'E'"I' shall be made to provide .the piping system with the degree of control that its opera *ing characteristics require. g) . Loadings due to sn.smic forces when provided by the design engineer's specifi-cation. 6.2 Where negligible movement of pipe occurs at hanger locations, rod hangers should be used for suspended lines. For piping sup-3.5 Hanger components shall not be used for ported from below, bases, brackets or struc- -- purposes other than for whio Ihey were de- tural cross members should be used. . signcd. They shall not 'ee used for rigging and erection purposes. 6.3 Where there is horizontal movement at a suspended type hanger location, hanger com-ponents shall be selected to allow for swing.
- 4. MATERIAL REQUIREMENTS If the vertical angle of the hanger rod is greater than 4 degrees a traveling device should be 4.1- It is strongly recommended that the provided for horizontal movement. For piping materials of all pipe hanging and supporting supported from below, slides, rollers, or roller elements be in accordance with MSS SP-58. carriages should be used.
( b MSS STANDARD PRACTICE TABLE 1. HANGER AND SUPPORT SEL (For Spring Hangers, See Table To find reco nme .ded hanger or support components.
- 1. Lc:ste the syste:D temp. and utsuhtion conditionin the t . .
- 2. P.std a:ross the colann headings for the type of componta.
- 3. Nmers in boxes refer to those types shown in Figure 1,s.
HOFJ20%TAL PTE ATTACHMENTS vir, SYSTEM STEEL MALL. TRON STEEL STEEL CA5f TRON STEtt N TEME CLIPS RJNGS SANDS CLAMP 5 HANCING ROLLS TRAP""- RANCE NOTEI ROLLS 4 5HIELDS $7ANCHIONS ATTACHNENT5 2-EOLT i DEC F(O A B C D E F G H I g 3 HOT COVERED NONE NONE e. 5. 7. 9. IO 3 41.43 44.4546 %;TE 3 ' 39 M. 37. 35 A-4 % 54DDLE OR W,$ ADDLE W/ SADDLE
- S CD*.E W5
/ ADDLE SHIILD 35 8 NOTE 3 1204*) se 84RE 24.26 6.11.42 1.5.7.9.40 3. 4 41.43 44.45.4o V}TE 3 NOhE .'6.37.3s 4501232) ihm CO%kRLD NONt NONE I t' 3 41 44. 45. 4e %CTE . 39 4.37.34 A2 54DDLE
- SADDLE WSADDLE
- 50XE W/SADOLE 35 NO%t 45182331 TO BARK h0%E h0%L NOst 3. 4 NONE NONE %CTE 3 NONE %ONE l
75013*st l HOT COvtttD h0NE h0NE 15 , 4ttow 41. 43 t! 44.45.46 NOTE 3 39 M. 37. 38 A.3 ALLOY 2. 3 4LLOY ALLOY
- AdOY ALLOY W1 ALLOY $ ADDLE y
%ADDt6 5 ADDLE SADOLE SA C'J %OAE ALLOY OVER . S4Rt NO%k h0NE NONt ALLO) %O%1 NONE NOTE 3 II l NONE NONE 750s DN3 2. 3. 4 l AM BitN1 COW LRLD 24. n NONE I.5.7.9 10 3 41.41 44.4? 46 NOTE 3 39.40 36. 37. 38 5 a 54DDt t OR
- 54DDLF Wr54DDLE 5.5ADDL E WISADDLE 5 4LLp 35 8 NOTE 3 set t+)
TO $4RL 24. :n a. II.12 f 5. 7.9.10 3. 4 43.43 44.45.46 NOTE 3 NONE 36.37.33 11444 COLD COVlRLD h0Nt NONE t. 5. 7. 9.10 3 41.43 44.45.46 h0TESJ44 40 36.37.38 C.8 W5HIILD n'5Hif LD W/5HIELD W,5HIELD W/5H1 ELD NOTE 4 NOTE 4 NOTE 3 8 33llp To a4RL 24. 2m
- 6. I t.12 1.5. 7.9.10 3. 4 4I.43 44.45.46 h0TF3 NCNE 36. 3T. 38
' 54 th ' COLD COVtRED NONL NONE I.5.7.9.10 NONE 41,43 44.45.46 h0TE5 3 & 4 40 36.37,38 C.2 Wl5HIELD W/ SHIELD Wr5H1 ELD W5HIELD W! SHIELD NOTE 4 NOTE 4 NOTE 3 4 -2 t 2% . 70 84RE %ONE h0%E- 3.5.7.9.13 3. 4 41.43 44.45.46 h0TE3 NONE 36. 37. 34 32:06 COLD COVERID ' *****" 40 36.37.38 NO%t %d$$ '~ s.5. 7.9.10 NO%E NOTES 2.3.4 C3 W 5H'tLD W'5HIELD W,$HIELD NOTE 3 NOTES 7 ' ~ 243 2&3 6LLOW 84R1 suNt %OEL NOT E 5 2 & 1 %OTI5 %ONE NONE NOTES 2 & 3 NONE NOTES 2 & 3 l 1 2 f.29) 2&3 ~ NOTE: - -
- 1. Ilangers on insuhted system s shallincorporate protection. saddles or shields o shall be chmped or welded to the 3. The design st Pipe and project through the insubtron to provide external attachment. 4. For shields c.
- 2. The selection of type and material shall be made t'y the Design Erypneer. 5. Continuousi-3-
STANDARD PRACTICE 'SP49 -} i1. HANGER AND SUPPORT SELECTIONS (For Spring Hangers,See Table 2) - jer or support components, estem temp. and insulation condition in the two cc4umns at 1:ft. ithe colantt headings for the type of component to be used. ' boxes refer to those types shown in Figure 1,which corresponds to Figure 1 of MSS SP-58. 1 1 VinTIC AL rirE ATT ACHMENTS H4NCER RODF14TURES I BULDt%CSTRLTTURE ATT ACH4EhT3 STEELOR W ALL tRO% l STEEL AND CR M4LL.lRON L STE EL OR CAST STEEL STEEL STEEL WELDED TUR.4- SmG *L DRACKETS DDLEs sROM wfLDtD suSER CLAMPS IUSER CLAMPS ATTAOfMENTS CLEVISES INSERT 5 CC. AMP 5 BE AM CLAMPS EYES tiTACHMENTS 3 STANCHf0NS ATTACMMENTS 2-50LT 4eOLT STEEL ButKLES M N O P O t 5 7 U 3 i K L 36.37. 34 t*/5ADLLE 33.32.33.34 42 NOTE 3 13.45 16.17 14 i' :*. 23 20.2I.15 22.57.38 33 s NOTE 3 NOTE f 27.28.29.30 NOTE) ht)TE 3 i M. 37. 34 31.37.34 USAnDI E h0TE 3 13.15 16.17 14 'a %O%E 20. 21.25 22.57.38 JI. 32. 33. M 35 SONE 42 %CTE ! 27.28.29,30 NOTE 3 + NOTE 3 h0TE 3 ! NONE g. M. 37. 3a W OT SADDLE ALLOY % 3T!! 20.21.25 22.57.58 33 42 31. 32. J 3. u !? 14 Jaf NONE 27.28.29,30 NOTE 3 ALLOY SONE ALLOY NOTE 3 33 hOtg 3 NOTE ) g gg 3 M. 37. 3a 16.17 44 18 19.23 20.21.25 22.57.3s 31.12. 33. M 33 e 42 NOTE ) 33. t 5 SCTES 27.28.29.30 NOTE 3 NOTE 3 h0TE3 I k. 37. 34
- h. 37, he W/$ Hit 1D
- 31.32.33.34 42 NOTE 3 13.15 16.17 to 18 19. 23 20.21.25 22.57.38
%OTE 3 8 NOTE 3 NOTE 5 2 7. 28. 29. M h0TE 3 1 36,37.34 36.37.38 WiSHIELD 34 18 89.23 20.21.25 22.57.58 31,32.33.34 4 42 NOTE 3 19.85 10.87 NOTE 3 NOTE 5 27.28.29.30 h0TE 3 NOTE 3 1 Jh. 37. 38 36.37, 34 22.57.58 33 19 16. t ? I4 65 19.23 20.21.25 31.32.33.34 t/5H' ELD NOTES '%OTh. NOTh$ h0TL5 NOTE 3 4 g} NOTE 5 27.28.29.30 yg3 24J 2aJ 1 NOTES 2 & 3 o thi 3. The design shall be in accordance with MSS SP-58 or as specified by the Design Engineer.
- 4. FOr shields used with rollers or subject to point loading, see table S. ~ ~
- 5. Continuous inserts, anchor bolts and concrete fasteners ray be used as s;ecified by the Design Engineer. ).
I l STANDARD PRACTICE MSS e
- n ,,,
.,,7 ' ? r El-l- N r ll * ' / 3 If - M 5 V h TOPGEAM TOP s.et Au CL&hP T Y P E.2 5 U y A0J.STttL S Am0 0464 STEEL Tuantucutt C.CLAur . 40J. STtEL CLEVIS 7 Y P t.19 g TYPt.1 1YPE.7 YYPE-83 TYPE-u - . . t,=,A,y.g (=3 - 9 , l1..'Lg uteruu et'.tt3 STIEL [.,\ p, i 7 ' ,% SRACRET i T TPt.32 g 8 - I1 0 0 1I est AVY w tLCEO STEEL /
- k" -
Ca SiOE I. OC AM C.88 $","p g. ALLOT Sit tt ripe CL AMP ENTtNSON P'Pt OR STEtt C T Y s t.2 6 STitt Pft CCe A1554 CL A M P TYPt LEVIS 44 CA ChammtL CL Aur PPOTECTI0e er TTPt.2 7TP(.20 TYPf*39 TYPE.e = m = (9 m l [ I ' g Ji I " > w - fr 1.1 j 'm - ~ /^U . . ll -*~~- kG-li ] .5' i*/r e = g ' ' 9 E_=_) y \_ @ SICE SC AW SM ACKET PPCTE87, N 69. SWlV EL CENTES9.GEAM StDE I.Sf ad CLA M P I f* T e SL LT TYPt.24 ' 'p t .2 7 T Y P E.3 4 PIPE CLAMP A DJ S A N D.e TYPE Tu a n suC ALE m T T Pt.4 3 , T T P E. 3 m ) g rs . w._. ( :: . : ._ " jl ~ [ } .+ ( ...# ) .. ^- W ' . , ' l l ..e V -b-ttLDEO ATTACMWE N T STttLm/ETE T S-4t Au CL AMP ff-Mi w SitiL PIPE CLAMP ADJ SetVEL RIN S teALLG A8LE T Y P E.2 2 Nyt PIPE SLt0E 4 mg ,,g . T TPt.4 GANO TYPE amon sota gY SLIOE P p , g, g AS SMowe 04 TT P t.26 TYPt 60 g,,g es thvtRTIO LESS SOLT T YPt.L SS AT E
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,# ,"+ y 11 ; f f"ll" y . 1 j j I- c-A A f. y ,j U L i " " b* [A CAmeon 04 ALLT. PtPE S ADatt SUPPORT miste CLL SPtlT PrPt plNS W/WO STEtL wtLOLESS C= CLAMP STEEL w F CL AWP Tf't'AE PtP C MAmett TYPt.73 w/tvi mui 7YPt.36 TTPE.8 fuentyCELE ADJ EYt auf 7YPE.29
- T Y PE.es T YPE.if
' O . e - Nl . 8( )% & l u f f m i ) .-.' -V O I-- WALLtaltt St AM CL AMP ADJ SesVtt PtPt alue . tITthstom S PLtf STitt 04 M ALLf ASLE U.90LT w/ tattmsc4 Pit CL PIPE SfamCMos S ACCLE SDLif mesa TYPE Ce PtPt CL Au P em5t R T 7771 30 T778 37 S OLI6 men TYPE Min s t On 0 SOLT C omC TYPt R E T E.It T f PC- 14 I FIGURE 1. TYPE CHART f .) l i k T STANDARD PRACTICE SP-69 ,. 11 ,) .m. !! jf jl, . - (~h li( .. )I 4a g y a ISNT IC ELD E D S T E EL ADJ PtPt SA00LE SUPPORT - A0J ROLLER MANGEA # II e7TPEv es.t5s7 7TPE-se we0 swivel TYPg.43 G ; h" % SPAshe Ct*@e SCLL C04$1 ANT SUPPORT . TYPE-49 se04:23NTAL TYPE ESM8 CELDEO S TEEL t, e s I M *04 B~eiCXET T YPE.u - [ O] C A * **ELDED STE EL - 0 4 $YP$3[ STEEL P1PE C0vEmese PIPE ROLL CoefPLETE hM/ w & ' N* P I' PROTECTeoes SA00LE TYPE-44 Y *M j TTPE*30 O E y# 1[ $ ea 9perst twA' SRACE O 7YPE-SO V b ( ) ,, , I \ / \ 8 Cometauf SupPomT VERTICAL TYPE TYPE-86 0 llDE SE AM D'ACRET P40TECT10N SMIELS P1PE ROLL e PLATE I Y P E.34 T ypg.40 T YPE-4 5 . T n E. c. sn i . x ( -- ) !l , !l , r 3, (r***g W ed W-i TP ' c *1 . ) ., y s ~[t i D V i " & " A. CT t y . R E va#1A$it $84 h6 C04STANT SUPPORT MAh4E4 TR APEIE TYPE g4P E SLIOC & TYPC-Se TYPE-40 SLIDE PLATE Oi3'8LE PfPC SCLL ADJ P*E ROLL & SAat , , T y p g .3 3 TY P E-48 TYPE-46 - - ' C. I I r"s 'Of Y .A A A ^ A, n I f I i n g[ - Ji %.J,l -w u u v vanlatLE samthe PLATE Lue SASE SUPPO4T TYPE =67 CAJescer ca ALLOT STEEL RESTRans? Cos:Taot TYPE-SE 4E SSD3LE turpoef RISER CL& asp OEVICE 7 T)E .34 TTPE=43 TYPE- 4 7 , n r1 l,Rh , I1 i _ y ** ** w ((, si , i . . . - . . -w!?. - - - . . i '/ - i E i i O ,,;- y, . . .. . _v g u. . l. v PE $7MCupe S ADOLE O senge CusM!Cg vasaAstt spathe asce!ZoasTAL TamELER TTPE JT TYet.gg : Tm APEZE MANGER - - - T YPE*S S TYPE-SS FIGURE 1. TYPE CHART 4 ' 1 1 a MSS. STANDARD PRACTICE SP-69 6.4 EWhere significant vertical movementiof 6.4.2 Variable Spring Hangers shall be used ~ the_ pipe occurs at the hanger location, a resil- for all; other resilient support requirements -ient support must be used. Selection of resil- except as noted in Subsection 6.4.3. ient supports shall be based on permissible load variation'and effects on adjacent equipment. 6.4.3 Constant Support Hangers shall be used Typical load variations are shown in Table 2. on piping systems where the desiation in sup-Load and movement calculations shall be - porting force must be Ipnited to 6 percent made for the proper selection of spring hang , and which cannot be accommodated by a
- ers. Vertical movement and load : transfer .
- Variable Sprine Hanger.
from riser expansion to horizontal runs shall t be given consideration when applying spring . hangers.-
- 7. HANGER AND SUPPORT SELECTION 6.4. l ' Spring Cushion. Hangers may be used where vertical movement does not exceed % 7.1 Hanger and support components shall be inch (6.3 mm), and where formal load and . selected frorn Table I within the system elassi-movement calculations are not ' required; fication.
7.2 For a:tachment to concrete structure. poured in place anchor bolts or inserts are preferred whenever possible. When necessary, approved ccncrete fasteners may- be used. . TABLE 2. SPRING SUPPORT SELECTION 7.3 Where additional structural members are required, they shall be designed for the specific Anowou loads they are to support in accordance with , g%"$^A Yoo" S'oo" ss'R1 the requirements of the American institute oevtuios nacen . mucta - of Steel Construction. .160Titt) NOTE (2) ANDNOTE(3) MAX. I/4 tNCH 25 1' 48.s!55 40.49,s t s1.s355 5:55 ( 6.3mm) 61 s155 . slS. s35 523- , , , MAX. I thCH 2sS s15 sl1. s35 s2S us 4 > . .s u.55 u.ss.s. u.ss BOLTING
- MAX. 2 9%CH 25S sits s tLt.53t3 s2LS on.r., . .2 uss u.s s.56 s(ss- 8.1 All welded type support components un mCu ' sits . siu.sats 5:u shall be in accordance with MSS SP-58.
c, : - m.a uss u.su. s(ss ovt=3r<n :s2 uss 54.su. u.s s 8.2 All attachments welded to the pipe shall U. 2mm6 .1 s4.ss s4.s s.s4 54.55 be in accordance with MSS SP-58 and Pipe " ' [," *["' n, e "r/~d e--i x s .. R- m m.:--> Fabrication Institute, Standard ES-26. .a o,.. t msau CO%5TtNTSL?fCuttto6tf4 g ,,, , w, Ra w .. o .w Rw u-we 8.3 Welded and bolted attachments to the . . a.u.n u u ..w.R u.,u.-..t' building structural steel shall be in accordance
- - Ntwu Rs n Cettuss ut nn Neunins rRow ricus s with the requirements of AISC. There shall be
- o, - uniou sunc n/ts si.h 4~o su,.$TANDARD $PRING. g T ng of des in de MMing $ hurt 5FRN.MD LDNG SPRING MuoLLS ark IDthTIFILO AS 5 is. AND Ls RISHCilVILY. struClural steel Without prior approval by the design engineers. .S. t 3 1: MSS STANDARD PRACTICE SP-69 I.
- i
' ( 'i ... ., .,- _ .Q = = Y _-~ . 'y E -h I OLLOW PIPE ilANUl ACTURI.R3 RI.CO\t.\tENDATIONS I OR SPACIN., AND d 2EO SI RYlCI CONDillON. -- " 5 - ^ E ~ , c:. ~p 7" x 0 c-- M FOLLOW PIPE h!ANLF ACTURER'S RECO.\tstENDATIONS FOR h1ATERIAL AND $ s. SLR VIC1' TL51PLR AT URE. -. U v m . e ] 8 f( (2.4m) SI AX SPACING. FOLLOW MANUFACTURER'S RECOh151LNDATIONS. SEE SECTION I8. "N o x 2 c5 y Ow wm wz Ha h< = $N FOLLOW P!PE hlANUFACTURER'S RECO.sti!ENDATIONS. N$ Ho 9& $ <* $E h -z. 10 ft 0.0ml h!AX SPACING h!!N OF ONE (1)IIANGER PER PIPE SECTION CLOSE 5 Qg5
- ~*
TO JOINT ON Tl!E BARREL. ALSO AT CllANGE Or DIRECTION AND BRANCl! wc CONNECDONS. "E O <u 7 .d s z vi 12 ft 13.7m ) h!AX SPACING SilN OF ONE (1)llANGER PER PIPE SECTION CLOSE w$ m, e
- Ej$
TO JOINT ON THE BARREL. ALSO AT CllANGE OF DIRECTION AND itRANCl! d5y y CONNECTIONS. y[d= g z < s me (. "m"' . Ej{ FOLLOW REQUIREN!ENTS OF THE NATIONAL FIRE PROTECTION ASSOCIA- }[$ gca E: -:w TION. SEE SECTION 14. c H o=z aC-a < e. = = l- l, e. 9 ,r. o, 9, ,o e. m A $ 9 b$h y E - s, b_ ~ m , - m - - e -,.i, m.:_2 6 v y sB om< d 5 Nb c
- I # l 3 !," l"
- 2 C 2 2 0 $ " f, R "
- 7. hNU e - , , zu O -
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- v. v. N O m. 9 zjL g ,_,_
9 -g - - - ~ ~ ~ ~ , m - , ",1 , m e ;,c O * # # # # " " "
- 3 C U 2 1 3 3 E e a
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- 2 2 2 U 3 C E -
Z 8 M N $ $ $ Q U $U. H - d e i ! < rk3 W = - N o '. m. &. N m. - A 9 N 9 co. -- S "ch >< m o, ",I .r m t- . .
- e. f r e m a e o
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- 3 2 U C 2 3 C E k. N N I4 f4 k N $
3 e mw W OOM p p wo< < C
- 5. t* -
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MSS STANDARD PRACTICE SP-69 ') 8.4 Recommended maximum applied torque i 1. MULTIPLE SUPPORTS for set screws in C-clamps is listed below: 11.1 IIorizontal banks of piping may be supported on a common base member without Thread size Torque regard to the pipe centerline elevation. The Inch inch Pound particular method of support to be used shall 1/4 40 be as required by the engineering design. 3/8 60 ' 1/2 125 . I 1.2 in the supporting of m61tiple pipe runs, S/8 250 provisions shall be made to keep the lines in 3/4 400 f relative lateral positions, using clamps or t'teir 7/8 665 clips. Lines subject to thermal expansion shall be free to roll axially or slide.
- 9. IIANGER AND SUPPORT SPACING 9.1 The maximum spacing of hangers and 12. RISER SUPPORTS supports shall be as set forth in Table 3.
12.1 The sebetion and location of riser sup-9.2 Spacings less than shown in Table 3 may ports shall ta,:e into consideration the entire be required to conform with building structure weight of the riser, hydrostatic test load con-loading limitations. ditions,line temperature and available support-ing structure. On a riser subject to expansion, ) . 9.3 Minimum rod diameters for single rod only one support of the rigid type shall be used, hangers are listed in Table 4. 12.2 Riser clamps. Type 42, shall have a 9.4 When periodic dismantling of a piping positive means of enga.: ment between the pipe system for cleaning, etc. is anticipated, the and the clamp. design engineer shall specify any required additional supports.
- 13. ANCIIORS. GUIDES AND RESTRAINTS
- 10. PIPE ATTACIIMENTS FOR ,1,NSULATED' 13.1 Anchors, guides and restraints shall be
_ LINES , , located by the specifications and/or drawings. - - .,.; Should the need or the desirability of relocat- -10:1 The' connections to pipe attachments ing, eliminating or adding anchors, guides or shall be outside the insulation so that move- restraints arise, such changes shall be brought ment of the line shall not cause damage to the to the attention of the design engineer for insulation. c nsideration and approval. 13.2 Anchors, guides and restraints shall be 10.2 Insulation protegion shields shall be designed for imposed loadings as determined provided to protec' t the" vapor barrier of insu- by the design engineer. lation on cold lines. Under' no circumstances _ shall hangers, supports or guides be applied 13.3 The necessity for, and the location of, directly to horizontal.pipc~or tubing on vapor shock supressors and seismic control devices /
- barriered lines. (See Table 5). shall be as determined by the design engineer.
3 MSS STANDARD PRACTICE SP-69 i. TA!1LE 4 MIN. ROD DI AMI?TER I NFPA-l1 - Foam Extinguishing Systems , FOR - NFPA Carbon Dioxide Systems SINGLE ROD il ANGE RS(l)I2) _ NFPA Installatien of Sprinkler t in t,uss r u rowusso, Systems i . :. e.. De i 4. n. ' NFPA Stanhpe ind Hose Systems Nennur ,,,,,,g, soviu t smuut NFPA Water Spray Systems ROD ROu Q7" on oir. NFPA Foam Water Systems ~ in m . in ,nm NFPA Dry Chemical Extinguishing I/4 3/n 96 3/n 9.6 l'M 3/M 9 t. 3th 9.6 It2 3 'M 9h 3lx 96 3/4 3;x va 3/h 9n i 3m vu 3;n 9 ,. 14.2 Ilangers in general are covered in NFPA l ,j , $$ l ," ) l,[ Pamphlet 13. If the systern is other than a
- rn 9 ,. 3x w e. standard water sprinkler system. the applicabie j '#2 lj
, lj 'j ljj pamphlet (e.g., Foam) shall also be consulted. t it: v: i: t it; i: -
- f. l$ l.l ll 15. CAST IRON PRESSURE PIPING m ,,, ,, is, h 7/n 2:: 34 19.1 15.1 De size of hangers shall be suitable
', ?. ,[ iii l',:,'ll for the O.D. of the pipe to be supported. i4 :54 7e :: i ,. i :5.4 15.2 For exposed piping with other than y l,y j5 ,' bolted flanged or grooved joints, clamps and (
- 4 14 u x' restraining rods shall be used.
15.3 In cases where movement may occur St.ao.iecas..at.aaice .re 3.: wea .a u.erame wnh V53 sP Si. Me 3. between the piping and the structure to which d J
- the hangers are attached, spring hangers shall 82' ,"j',",'y,[1";'3,[",n'[*',[f1,,,
a...oci e, . be installed as specified. I y ('olumm noseJ cfe, to Mss s?+4. Table 3. 15.4 For buried lines, supporting means that may be required due to soil conditions or settlement of terminal points, shall be speci-13.4 The location, type and number of fied by the design engineer. corrective devices which may be necessary'to control any unforeseen vi: rations as deter: 16. CAST IRON SOIL PIPING mined after the piping is in service are not ag part of this standard. Requirements shall be as set forth in Sub-
- '- section 15.3 and 15.4.
- 14. FIRE PROTECTION SYSTEMS
- 17. ASBESTOS CEMENT PIPING 14.1 llangers and supports for fire protection systems shall conform to the standards pub- 17.1 The size of hangers shan ue suitable lished by the National Fire Protection Associa- for the O.D. of the pipe to be supported.
tion in the National Fire Codes for fixed ex-tinguishing equipment. Pamphlet forms are as 17.2 Support types and spacing shall be as follows: recommended by the pipe manufacturer. 8-
- '5fSS* STANDARD PRACTICE SP-69 l
TABLE S TYPE 40 PROTECTION SilIELDS FOR VAPOR BARRIER INStJt.ATED PIPE AND TUBING NONf. PIPE SHIELD LENGTH SPACING uS. STANDARD GACE l st2E in mm l ft m f/2 31/2 12 305 18 10 3D 4 12 305 16 10 3D $ -6 18 457 16 _ 10 3.0 8 34 24 610 14 10 3D 16 24 24 610 12 10 3D NoAf. TUBING SHIELD LENGTH - l SPACING- - stIE uS.STMDARD GAGE , in mm j ft m 1/4. I 12 305 \ 18 5' l.5 11/4- 2 t/2 12 305 18 6* 2.4 3 38/2 12 305 18 10 3D 4 12 305 16 10 3D s 6 18 457
- 16 10 3.0 8 24 610 14 10 3D NOTES: The lated spans and sheldiengths are based on suulation with a compressne strength of 15 psi (103kPa). For suulation with comprenne strengths greater than 15 p6 tICr.Pa).sparimsy be increased proportaonately up to the maannum allowable as lated ci Tabie 3. s;ar:s marked
- are the maumum alkwable.
Protectron shuld gates lat:J are for use with band type hangers e-Jy. for point icading sicrease sage Lluckneu and length. When ihmids are used with sca n sbe.dlenths shallbe increased to keep rollang pomt of contact within the nuddle one4.;;d cf tr.e shield length. i
- 18. GLASS PIPING 19.2 Support spacing shall be based on the 18.1 liangers shall be provided with pads or manufacturer's recommendations for the ser-vice conditions.
cushions on the bearing surfaces to prevent scratching the pipe. The hangers shall fit 19.3 Flexible plastic tubing or rigid plastic loosely around the pipe yet contact it through pipe operating at temperatures high enough to the pads or cushions in a manner to distribute materially lower its strength, shall be supported the load over the largest possible area. Point continuously by metal angles or channels and loading shall be avoided. The system of hangers special hangers. shall be designed with the least practical num- - ber of rigid anchor points. Supports for verti- 20. FIBERGLASS REINFORCED PIPE (FRP) ~ . cal-piping and all anchors shall be as recom-mended by the pipe manufacturer. 20.1 The size of hanger shall be suitable for 18.2 Ilangers shall be placed approximately one foot from each side of fittings or cou- 20.2 Support spacing shall be based on the plings. At least two hangers shall be used for manufacturer's recommendations for the ser- 'each '10-foot (3.0m) section. vice condition. .-3 .
- 19. PLASTIC PIPING 20.3 FRP should not be point loaded and all shields and hangers in contact with the
_ _ 19.1 Rigid . plastic piping normally shall pipe shall be free of burrs. A suitable rubber be supported by the same type of hangers or other pliable material is recommended used with' steel pipe. ._ for a liner in the hanger. LIST OF MSS STANDARD PRACTICES NUMBER ( SP- 6-1980 Standard Finishes'for Contact Faces of Pipe Flanges and Connecting-End Flanges of Valves and Fittings SP. 9-1977 ~_ Spot Facing for Bronze, iron and Steel Flanges SP-25 ~1978 Standard Marking System for Valves, Fittings, Flanges and Unions SP-42-1978 ~ Corrosion Resistant Gate, Globe, Angle and Check Valves:with Flanged and Buy Weld Ends F' ' SP 43-1976 Wrought Stainless Steel Butt-Welding Fittings SP 441975 . Steel Pipe Line Flanges - SP 451976 Bypass and Drain Connection Standard (formerly SP-5 and SP-28) SP 511978 Class 150LW Corrosion Resistant Cast Flanges and Flanged Fittings SP 53-1980 Quality Standard for Steel Castings - Dry Particle Magnetic inspection Method SP-541980 Quality Standard for Steel Castings - Radiographic inspection Method SP-551971 ' Ouality Standard for Steel Castings - Visual Method , (R 1980)
- SP 58-1975 Pipe Hangers and Supports - Materials, Design and Manufacture SP 60-1976 Connecting Flange Joint Between Tapping S!eeves and Tapping Valves SP 61 1977 Pressure Testing of Steel Valves SP 65-1977 High Pressure Chemical Industry Flanges and Threaded Stubs for Use with Lens Gaskets SP-671976 Butterfly Valves -
SP 691976 Pipe Hangers and Supports - Selection and Application
SP 71 1976 Cast iron Swing Check Valves, Flanged and Threaded Ends SP 721970 SP 73-1978 Ball Valves with Flanged or Butt Welding Ends for Gneral Service Silver Brazing Joints for Wrought and Cast Solder Joint Fittings (' - SP 751976 Specificat;en for High Test Wrought Welding Fittings, with 1978 Addenda SP 771971 . Guidelines for Pipe Support Contractual Relationships (R 1978) SP 78-1977 Cast Iron P:ug Valves, Flanged and Threaded Ends SP-79-1974 Socket Weiding Reducer Inserts SP 80-1974 Bronze Gate, Globe, Angle and Check Valves SP 811975 Stainless Steel, Bonnetless, Flanged, Wafer, Knife Gate Valves SP 821976 Valve Pressure Testing Methods SP 83-1976 Carbon Steel Pipe Unions, Socket Welding and Threaded , SP-841978 - Steel Valves-Socket Welding and Threaded Ends ' SP 851976 Cast iron Globe & Angle Valves Flanged and Threaded Ends SP 86-1977 MSS Guidelines for Metric Data in Standards for Valves, Flanges, and f Fittings s i SP 871977 Factory Made Butt Welding Fittings for Class 1 Nuclear Piping
+ SP 89-1978 Pipe Hangers and Supports - Fabrication and installation Practices SP 90-1980 Guidelines on Terminology for Pipe Hangers and Supports L SP 911980 Guide!!nes for Manual Operation of Valves , SP 921980 MSS Vaive User Guide t 'Aporoved by ANsl Metric Units included in all standards except SP 72 R Year - indicates year standard reeffirmed without substantive change Pricas available upon request A large number of former Mss Star dard Practices have been approved by the ANSI as L 4 ANsl standards, publisned by others in order to rnaintain a single source of authorita-the information, the MSS withdraws its Standard Practices in such cases. I MANUFACTURERS STANDARDlZATION SOCIETY OF THE VALVE AND FITTINGS frJDUSTRY. INC-L o., . .n . . . .. g :..;. .,. ..: . e z. .g.;::.., . e., h 'h CASE A1TACHMENT C Gibbs & Hill, Inc. Specification 2323-MS-46A Revision 5 - February 10, 1984 Page 3-15 - (h) ANSI N5.12 Protective Coatings (Paints) for the Nuclear Industry Note 1: These documents may be obtained from: American Society of Mechanical Engineers 345 East 47th Street, New York 10017
- d. The Purchaser reserves the right to a quality assurance survey of the Seller prior to award of this contract, and to free access to any part of the Seller's offices or shops throughout the duration of this contract. This also applies to all Seller's sub-vendors and associated organizations.
- e. The Seller shall maintain quality assurance related documents in accordance with the requirements of ANSI N45.2.9 and the ASME Code. At the end of the ASME Section III retention period, the Seller shall contact the Purchaser or Engineer for instructions as to document disposition.
3.3 CCDES AND STANDARDS , Design, fabrication, materials, certification, code stamping, and I' testing requirements included in this specification shall be in accordance with the edition and addenda of the following codes, legislation, ' regulations, and standards, in effect on l July 28, 1975, unless otherwise specified below or authoriced by the owner. a. ASME Boiler and Pressure Vessel Code (B&PV Code) (1) Section II - Material Specifications (1974 Edition through the Winter 1974 Addenda or later) (a) Part A - Ferrous (b) Part B - Non-Ferrous (c) Part C - Welding Rods, Electrodes and Tiller s Metals (2) Section III - Nuclear Power Plant Components (a) Table NT-4622.3-1 of Su=mer 1976 Addenda ~ . . . .. .. . > - .;.......,.f...... _ g. s Gibbs & E111, Inc. Specification 2323-MS-46A Revision 5 February 10, 1984 Page 3-16 (b) Paragraph NF-1231 of Summer 1979 Addenda to the 1977 Edition (c)- Paragraph NC-2300' of Summer 1977 Addenda to the 1977 Edition (d) Deleted (e) Paragraph NT-2610 of Summary 1977 Addenda to the 1977 Edition (f) Paragraph NT-4721 of Winter 1980 Addenda to the 1980 Edition (g) Deleted (h) Paragraph NT-3321.1 of Winter 1978 Addenda (1) Paragraph NT-3226.5 of Winter 1978 Addenda (Deleted) , (j) Figure NT-3226.5-1 of Winter 1978 Addenda (Deleted) (k) Figure NF-3321-1(c)-1 of Winter 1978 Addenda - (Deleted) . (1) Paragraph NT-3391.1 of Winter 1980' Edition (m) Paragraph NT-3392.1 of Winter 1980 Edition (n) Paragraph XVII-2211 of Winter 1978 Addenda (c) Figure XVII-2211(c)-1 of Winter 1978 Addenda (Deleted) (p) Paragraph XVII-2454(c) and Table XVII-2452.1 of . Winter 1979 Addenda to the 1977 Edition (q) Deleted ! (r) Paragraph NOA-8230 of Sunmer 1982 Addenda to the 1980 Edition (s) Paragraph N3-4433 of Winter 1980 Addenda to the 1980 Edition . i - ----------.,,,,-,-~---.,--r-- - - - - - , , - - - - - - , ..,--,-,-,.-n-v-.,.---,---- ~ .u. ... . .. .. :. 1 ....,- . r.___ . .. . . . . . . .:g Q) ~ Q1 Gibbs & Hill, Inc. , Specification 2323-MS-46A Revision 5 February 10, 1984 Page 3-17 (t) Paragraph XVII-2462 of the 1980 Edition (u) Paragraph NF-4123 of Winter 1982 Addenda to the 1980 Edition (v) Paragraph NF-4424(c) of Winter 1982 Addenda to the 1980 Edition (w) Paragraph NF-4427 of Winter 1982 Addenda to the 1980 Edition (x) Paragraph NF-4711 of Winter 1982 Addenda to the 1980 Edition (y) Table ,NF-3324.5(a)-l'of Winter 1982 Addenda to the 1980 Edition (z) Paragraphs NF-1131.6 and NF-1133 of the 1980 Edition , (aa) Paragraphs NF-3225.1, NF-3225.2, NF-3322.1(d)(1), NF-3322.2(d) and NF-3324.6a of Winter 1982 Addenda to the 1980 Edition. (hb) Table NF-3225.2-1 of Winter 1982 Addenda to the 1980 Edition. (cc) Paragraph NF-4453.1 1983 Edition. l l (3) Section V - Nondestructive Examination * ! (4) Section IX - Welding Qualifications (5) Section XI - Rules for Inservice Inspection of Nuclear Power Plant Components (6) ASME Code cases (a) 1644 - (N71) Revisions 3 through 10 " Additional Materials for component Supports, by welding, Section III, Subsection NF Class 1, 2, 3 and MC Construction" Code case 1644-9 is acceptable subject to the following condition in addition to those conditions specified in the Code Case: In the last sentence s . . . . . . . .. .r. . . , , . . . . . . . , , , . . g . . . .g . - . . . - j Gibbs & Hill, Inc. Specification 2323-MS-46A Revision 5 February 10, 1984 Page 3-18 s of Paragraph 5.3, reference should be made to , Paragraph 4.5.2.2, " Alternate atmosphere exposure time-periods established by test," of the AWS D.1.1 code for the evidence presented to and accepted by the Authorized Inspector concerning exposure of electrodes for longer periods of time. Revisions 3 through 8 of this code case are adopted for all materials listed in the code case. Revision 9 of this code case is adopted for all materials except A588. Hewever, A588 material -supplied under Revision 10 of this code case is acceptable. (b) 1683 - " Bolt Holes for Section III, Class 1, 2, 3 and MC Component Supports" (c) 1685 - . " Furnace Braning Section III, Class 1, 2, 3 and MC Construction" (d) 1686 - " Furnace Brazing, Section III, Subsection NT, Component Supports" (e) 1745 - Stress Indices for Structural . Attachments, Class 1, Section III, Division 2 (f) N-180-Examination of springs for Class 1 ce=ponent standard supports. , (g) N-108(1724)-Deviation from the specified silicon ranges in r3ME Material Specifications, Sections III, Division 1 and VIII Divisions 1 and
- 2. .
(h) 1706 - Data Report Forms for Component Supports,Section III, Clans 1, 2, 3. (1) 1728 - Steel Structural- Shapes and Small Material Products for Component Supports, Section III, Division I, construction. (j) 1729 - Minimum Edge Distance - Bolting for , Section III Division 1, Class 1, 2, 3 and MC Construction of Component Supports. L . .4 , }- .& k@ ~ ~ , Gibbs & Eill, Inc. , Specification 2323-MS-46A . Revision 5 February 10, 1984 l Page 3-19 (k) 1734'- Weld Design for Use for Section III, . Division 1, Class 1, 2, 3 and MC Construction of . _. Component Supports. 'Please note that this Code . case is subject to the restrictions imposed by [.. Regulatory Guide 1.84.8 V. (1) ,N-263 Alternate Thread Forms, Series and Fits for Component Supports,Section III, Division 1. 1 ? (m) N-242-1 Material Certification, Section III, Division 1, Classes 1, 2, 3, MC and CS 0.i construction. 'I (n) N-225 Certification and Identification of Material for Component Supports,Section III, Division 1. ~ (o) N-309 Identification of Materials for Component .' Supports,Section III, Division 1. ' S, ~~' (p) N-247 Certified Design Report Summary for Component 7: Standard Supports. - 9 (q) N-310-1 Certification of Bolting Materials. . (r) N-249-2 Additional Materials for Subsection NT, , Class 1, 2, 3 and MC Component Supports Fabricated without welding. 1
- b. AN'SI (American National Standards Institute) (editions'as 1
referenced by the ASME'Section III Code) (1) ANSI Bl.1 - Unified Screw Threads (2) ANSI B2.1 - Pipe Threads (Except Dryseal) (3) ANSI B16.5 - Steel Pipe Flanges and Flanged Fittings (4) ANSI B16.9 - Steel Butt-Welding Fittings (5) ANSI 316.11 - Forged Steel Fittings, Socket Welded and Threaded j (6) ANSI B36.10 - Wrought Steel and Iron Pipe 4 (7) ANSI B36.19 - Stainless Steel Pipe .,.__; _ m m- ._ . _ _ . . . , r, . . 4 . . .s . , , m, . . , . Gibbs & Hill, Inc. Specification 2323-MS-46A l Revision 5 : February 10, 1984 . Page 3-20
- c. American Society for Testing and Materials (ASTM)
- d. Steel Structures Painting Council (SSPC).
- a. Occupational Safety and Health Act (OSHA)
- f. Pipe Fabrication Institute (PFI)
- g. Manufacturers' Standardization Society (MSS)
(1) MSS SP-58, Pipe Hangers and Support-Materials and Design (2) MSS SP-69, Pipe Hangers- and Supports-Selection and Application
- h. American. Institute of Steel Construction (AISC)
Conflict among the above referenced codes, standards,* and regulations, and conflicts among this specification and the above referenced codes, standards, and regulations shall be immediately brought to the attention of the Engineer for resolution. Work affected by such conflict may proceed at the Seller's risk - until a formal resolution is made. - 3.4 SITE AND ENVIRONMENTAL CONDITIONS 3.4.1 SITE CONDITIONS Components stored. or located outdoors will be subject to fog, rain, 100 percent relative humidity, severe- wind, dust, sandstorms, windstorms, and ambient temperatures ranging from 20 F to 110 F. Wind velocities normally range from 4 mph to 18 mph but can reach velocities of 80 mph. The elevation of the plantsite is approximately 810 feet above sea level. 3.4.2 ENVIRONMENTAL CONDITIONS
- a. The piping systems and their respective supports and restraints will be located indoors or outdoors as shown on the Engineer's composite drawings and shall be suitable for the 40-year design life under the indicated conditiens.
- b. Environmental conditions, as a function of building areas, are shown on Table 3.4-1. The temperatures shown are the maximum anticipated. Arbient temperatures for areas outside
r ~ c: =,' . ! CASE ATTACHMENT D ~ EBA'SCO SERVICES INCORPORATED ! {@QQ TwoWortc Trace Center, New York, N Y.10046 April 12, 1984 Professor Arthur Boresi Dept. of Civil Engineering University of Wyoming ' Laramie, Wyoming
Dear Professor Boresi:
I am writing you as a follow-up on our telecon, of 4/11/84 and in regard to the possibility of you serving as a consultant to Texas Utilities Generating Company on matters described in the attachment to this letter.
This attachment briefly summarizes the significant technical issueswhich You will concern the intervenors at the Comanche Paak Nuclear Power Station.
readily see that all of the issues relate to the design of safety related piping and piping supports hestraints.
The role which Texas Utilities envisions as being played by yourself as their consultant is as follows:
(i) - provide an independent assessment of the program which has been undertaken by Texas Utilities to answer each of the intervenors' concerns. The details of the program are also described in the attachment (ii) suggest improvements in this program if any are needed .
(iii) provide your views on the validity and merit of the intervenors concerns be available to offer testimony and reply to cross examiaation (iv) on the three items above during the hearing process As a further clarification on items i,11 and 111, Texas Utilities is not looking for an independent technical reevaluation of all of the issues con-tained in the attachment, but rather a review, from fundamental engineering principles and practices, of the correctness of the approach the merit of these concerns.-
Texas Utilities would expect that this review can be conducted by you per-However sonally, sided by your staf f,ac your of fices.
pation would be required during the Hearings.
The Atomic Safety and Licensing Board Hearings sessions which are directly pertinent to these issues are presently scheduled in Fort Worth for two
t
( .-
Professor Arthur Boresi April 12,1984 consecutive weeks on May 29 through June 1 and June 5 through June 8.
These dates are reasonably firm.
~
A' subsequent session may become necessary,- in which case it would be held July 9 through the 13th, again in Fort Worth.
During April 24 through 27, there vill be a session in which many of same issues will be discussed between the intervenors and CYGNA. If, as we hope, your schedule could permit you to serve as Texas Utilities consultant, and if you are interested, Texas Utilities would like to invite you to come to these Hearings in Fort Worth for one or two days. You would be meeting key management personnel of Texas Utilities and they would further discuss with you the possibility of this consultation effort in detail. To aid such discussion it would be helpful for you to bring a resume highlighting your professional qualifications in this technical area and particularly any ex-perience with the hearing process.
Besides affording the opportunity to meet and dialogue further on you becoming TUGCO's consultant, your attendance at the forthcoming hearings session, would ,
be of significant help in bringing you up to speed on the technical issues.
Naturally, you will be reimbursed for your time and cost incurred.
Please let me know at (212) 839 3333 or Mr Nicholas Reynolds at (202) 857 9817 of your decision as soon as possible. Mr. Reynolds is the attorney in charge of the Hearings.
Youza y;4ry. truly, ,
/
' Robert C. Iott Chief Engineer / Applied Physics RCI/nr Attachment ec: N S Reynolds n M D Spence L Fikar D Wake
I ~*
( .
Major Technical Issues 3eing Discussed at ASLB Hearings The following represent a brief sum =ary of the salient technical issues which are being argued at these hearings, and of the program which has been undertaken to address the issues.
The main issues are exemplified below:
- 1) Piping Seismic Restraint Instability The intervenors allege that certain piping seismic restraints, as designed, are not stable and hence would not function as intended.
The stability or instability of each individual support is normally not the issue in a piping design, but rather the stability of the system as a whole is the primary concern. Regardless, one can cons-true that certain supports, taken by themselves, could be considered unstable. Example of such supports are restraints which consist of framing tobuilding structures, struts .which are pinned at one end to the framing and at the other end to either box frames or U-bolts /
backing plate surrounding the pipe. Rotation of the box frame or the U-bolt / backing plate around the pipe when subjected to a load, in ef fect renders the entire system a three pin assembly, which is not unconditionally stable. For instance, if such a box frame restraint were intended to accept vertical seismic load, any deviation from true vertical would cause the box frame to rotate about the pipe and the pipe to displace vertically in a manner not defined by design.
To overcome this possibility the U-bolts have been cinched down on the pipe so that friction developed at this connection will prevent the rotation. The cinching down solution, however, introduced other problems described. in item 2. Our program is intended to demonstrate that reliance on friction to prevent rotation (or third pinned connection) is a viable means to prevent individual restraint instability.
E
( .
~
In addition to this type of more obvious potential instability, _
local instability of the support can also occur if the box frame-
- t*-belt a:t as elssps. if the terrienal resistance of the pipe at the restraint lecation is insuf ficient to prevent. rotation of the pipe / clamp together_so that (to follow the first example) the pipe can move vertically in the presence of the lateral restraints to a degree not contemplated by design, ie the third pin.in the
- three pin system is ef f ected by capability of the pipe clamp to rotate. Our program addresses the . torsional resistance of the piping in the typical plant configuration; to quantify whether this could ever be a significant concern. .
A third type of instability is that of buckling of the . restraint system. This type is the classic column buckling problem trans-f erred to a system of column and rigid pinned members.
We are addressing it by determining the effects introduced by having a system of struts pin-connected to columns to the buck-ling loads which would be computed' on _the basis of a column of identical length.
This is done parametrically.
- 2) Cinching down of U-bolts The intervenors allege that cinching down of U-bolts will not remedy the instability of supports (as in 1) because a) The material used (A-36) relaxes under load and/or temperature and hence the preload will not be maintained during plant opera-tion, thus f riction will be insufficient.
b) normal vibrations levels will further contribute to the locsening of the preload.
c) Cinching down U-bolts is net acceptable because it is not industry practice and the operation introduces unacceptable stresses in the U-bolt and the pipe (besides the ASME Code doesn't allow it).
Our program is intended by a combination of tests, presently ongoing, and theoretical finite element analyses correlated to the . tests, to quantify the following.
- 1) friction developed even as a result of small preloads is adequate for stability.
- 2) The material relaxation characteristics and the residual preload af ter relaxation
- 3) The stresses in the U-bolts and the pipes under dif ferent preloads and under combination of preload/ thermal cycling /
and mechanical loads.
( ..
, 4) the ef fect of normal vibration.
Obviously the results will n:t be a.ailtile ur.til c::-letier.
of the tests and analyses.
- 3) Design of restraints for secondary stresses in faulted conditions.
The intervenor alleges that restraints should be designed for the secondary stresses caused by a class of postulated plant accidents even though, the ASME code doesn't require it. ._These secondary i
stresses ,are . introduced _by.. constrained free and displacementa, which .
by nature are self limitina. For example, beam or column restraints spanning two walls or to ceiling will expand both normally and in particular f or an accident condition which results in an abnor-mally high environmental temperature.. The expansion is constrained by the walls which will experience loads.
l To refuite the intervenors statements that valls would fail or the restraints would be overstressed, our program relies on finite ele-ment analyses which consider local cracking in the concrete walls -
(if it occurs).
- 4) Generic vs actual stif f nesses of restraints It has been industry practice to employ generic stiffnesses for the seismic supports f or ACE Class 2 or 3 piping. The invervenor alleges that the designer should employ the actual stiffness of each restraint in the design process, and furthermore, that the actual stiffness should consider every minute ef f ect such as gaps, individual flexi-bilities of each member of the restraint regardless of its relative stiffness etc. No one desputes that there is some ef f ect on piping stresses and restraint loading, particularly the latter, from vari-ation in restraint stif fness. Our program is intended to quantify
- the ef fect on the basis of :
- 1) performance of selected piping stress analyses with actual as-built stiffnesses.
- 2) generic sensitivity studies a
L
7
(- ..
. 5) Capability of Richmond Inserts Richmond inserts are cage like steel devices which are embedded in
. the plant concrete as' receptors of bolts which are used to attach the structural members of piping (and cable trays) supports. The structural member is tube steel which is bolted to the insert.
Square washers are, used between the tube steel and the concrete and between the nut,and the tube steel. The intervenor have two problems with these inserts
- 1) the factor of safety used for the insert in the design of the connection is lower than that reconsnanded by the manu-facturer, and the manufacturer doesn't provida enough in-formation to determine the allowable of the insert in shear and in combination shear / tension loading
- 2) The amount of tension introduced in the bolt when the structural elecent, which is bolted to the insert, is sub-jected to torsion, has not been properly considered in design. .
We are performing a series of tests in shear, tension, and combined shear tension tp demonstrate the margins of safety of thise inserts in the actual plant concrete. The tension introduced in the bolt (ites 2) is determined from a finite element analysis which will be correlated to a full scale test.
Finite element is chosen since it is not clear that the usual assumption of strain compatibility at the bolt / concrete interface would be valid.
- 6) Effects of Caps The intervanor has two mejor concerns; namely
- 1) In bolted connections which are of the bearing type, oversize bolt holes will load only part of the bolts and hence shear should be carried by a fraction of the bolts and not all (in-cidentally the intervenor defines as oversized, holes which are permitted by both the ASME and AISC codes)
- 2) . In seismic response one cannot neglect the effect of gaps
. (no size specified) and that effect can be disastrous Our plan for the first topic relies on tests performed on Hilti bolts which show their capability to deflect within the bolt hole limitation (generally 1/16" or 1/8" depending on bolt size) without adversely af-fecting their_ capacity, and hence to contribute to sharing the shear load.
Also we will refer to the AISC Manual which clearly shows that the give of those bolts which are initially loaded will bring the remaining bolts into action, so that shear loads are sharsi among all bolts.
For the second topic we will show our own generic theoretical studies on
/
l, .-
the effect of gaps on esismic response as well as results of dynamic i terting 'seir_ie si=ulationi which are evailable in the literature.
The theoretical studies basically compare results of non-linear time history analyses with results of linear (response spectrum / analyses) with gap size and systems frequencies as the variables.
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- 7) Lateral capabilities of U-bolts and restraining action.
U-bolts are generally designed to accept loads in one-direction only.
Likewise, the stress analysis of piping systems would model such re-straints as cne way restrafnts. In tartain instanter the lateral-gap between the pipe and the U-bolt may be insuf ficient te acce=modate the pipe lateral displacement be it due to seismic or thermal motion.
In this case:
- 1) the lateral load on the U-bolt will reduce its capacity to accept load in its intended direction to an unacceptable level.
- 2) the piping analysis failed to account for the additional lateral restraint and the restraining action can result in unacceptable stresses in the pipe or a significant redistribution in loads.
Our program addresses the first issue by testing. The U-bolt is later-ally deformed and loaded in its intended. direction.cf . load,. For. the second, selected piping systems are reanalyzed to quantify the overall effect. .
- 8) Restrained piping radial growth Certain box frames or anchors are designed to be in direct contact with the pipe at cold conditions.
The constrained thermal expansion of the pipe is alleged to result in loads unacceptable for the pipe (local stress) and the restraint.
In our program we have selected " worst" type configurations and ana-lyzed them to quantify these effects.
- 9) Asy= metric loading of trapeze type supports There are two basic types of such asy= metric loadings. Axial restraints are generally provided by connectiens to lugs or trunnions. They are also generally modelled symmetrically, ie all lugs share the loads or sy= metric pairs of lugs take the load.
Misalignment of the lugs or rotation of the pipe can result on one side of the support being loaded more than the other. The program will quantify the asymmetric effect and its acceptability by analysis of several (if not all) supports with the as-built pipe rotations and/or construction tol rances in lug misalignment (if any).
The second type is the asymmetry in load introduced by constraining the rotation of the pipe at the location, say, of two sy= metric trun-nions.
Our approach for this issue is the same as that outlined above.
t
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- 10. Effect of mass of support I
Again there are two concerns. One is the self excitation effect.
Under a seismic event the support will experience a response due to its own mess besides that produced by the piping response. The other issue is that the support mass itself should never be neglected in performing the seismic analysis of the piping system.
Our approach in addressing these concerns relies on selected reanalyses of piping systems including support masses, as well as generic studies performed on multispan beams with supports having variable stiffness and mass, which quantify when the support mass can be safely neglected.
The above are examples of the major issues. In addition there is an overall issue which underlies all of the above. This issue is that of safety margins inherent in the approaches taken for design. Many of the issues which when taken by themselves could be construed as being significant, become less so when viewed in the contsat of the safety margins built-in by the particular design approach chosen, the code allowables. conservative assumptions made in analysis etc.
The intervenors and we disagree on the margin to safety which the above produce. Dur program will also address this issue by looking to each contributor to the safety margin, i.e. design basis response spectra, method of analysis' chosen (response spectrum), margin to failure from using code allowables etc.
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LAW OFFICCS OF DISHOP, LIBERMAN. COOK. PURCELL & REYNOLDS IN mew YOmn 1200 S CVE NTC CN TM STRECT. h. W StSMOP.Llatamag asCOOK wa Sest NGTON, D. C. 200 3.
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- 20 3.s7.. 00 NCW7024 N CW YO R E 80004 rCtCx 440sr INTL 4W us (ain) as....OO tcLCu amar.T April 27, 1984 Professor Arthur P. Boresi * ~
3310 Willett Drive Laramie, Wyoming 82070 Dear Professor Boresis Thank you for taking the time to attend the NRC hearings
- this week on the comanche Peak case. This will confirm our wish to retain you as an independent reviewer of the program undertaken by Texas Utilities Electric Company (TUEC) to respond to the issues raised by the Licensing Board in its December 28, 1983. Memorandum and Order and by the intervenor.
Those issues related to the design of safety-related piping ,
and pipe supports. Specifically, you would perform an ..
independent assessment of the technical adequacy of the ,
program, and be available to offer testimony regarding your independent assessment at the forthcoming NRC hearings. :
We understand that you will be able to respond to our request for your assistance some time next week. If you wish to become involved, you will be retained and compensated by my firm, not TUEC, to act as a consultant and possible expert witness to aid us in our representation of TUEC.
You would be free to consult with your colleagues, as you deem necessary, to assist in your assessment.
- If you have any questions, or when you decide whether you wish to beccne involved, please call me next week at
,,7 the Americana Hotel in Fort Worth ((817) 870-1000).
'q Sincerely, M . ,3 . b t-(.l U Nicholas S. Reynolds NSR/or
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C, NAY f ..
8 1984 ,
BLM APPLIED MECHANICS CONSULTANTS (A. P. Boreti ' Associates) ,
3310 Willett Drive ,
.y ,, Lorerr..e, Wyo.wng 82070 ,
, 307/742 5266 307l766 5255 4
>. J,-l. May 5, 1984 C Law Offices of i:, Bishop Liberman, Cook, Purcell & Reynolds 1200 Seventeenth Street, N. W.
Washington, D.C. 20036 ATTN: Mr. Nicholas S. Reynolds '
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Dear Mr. Reynolds:
, - fW p r; As'I menticned to Robert Iotti by phone on May 3, 1984, I l
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.am agreeable to assisting you in the cepacity of an independent Gj 'M e rsviewer of the prograa.utdertaken by Texas Utilities Electric ;
ji'- / Com pany to respond to the is. sues raised by the Licensing Board ;
i in its December 28, Ifd3 Memorandum and Order by the intervenor.
In answer to your letter' request bf April 27. 1984, this letter *
'is to confirm my involvuent.
I have received from Mr.'Iotti two packages of documents. One
' package included background documents which cover technical issues as perceived by the board. The other package covered technical information on'each of the' technical issues. I am now in the process of studying these documents. I am also ask-i DrQ Henry L. Langhaar of my firm to assist me in this study.
j If I have questions, I will contact immediately you and/or Mr.
! Iotti.
I an aisc enclosing an invoice for time and expenses for par-ticipation in the, April 24-27,1484 session and visit to Com-manche Peak plant. I am sending the invoice to you for your proper action, as it was not clear from Mr. Iotti's letter of.
April 12, 1984 as to whom the' invoice should be sent.. I request that this invoice be reimbursed independently of my services as a reviewer of the TUEC program. i Since we have not discussed previously costs, you should. note that
, BLM-AMC charges Please let me know whether or not this is agreeable. We, of course, will put our best efforts-into the review.
If you have any questions, please contact'me. Through May 11, you can reach me at my university office in Laramie at (307) 766-5255. From May 14 until I recurn, you can reach me at '
the Clinic View Inn, W. Center St. &3rd Ave., Rochester, Minn. ;
phone (507)289-8646. You may recall that my wife Jean is to '
undergo an examination at Mayo Clinic on May 14. I am not certain how long I will be in Rochester, but I hope to return
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I BLM APPLIED MECHANICS CONSULTANTS (A. P. Boresi Associates)
{ 3310 Willett Drive Laramie, vvyoming E2070 307/742 5266 307/766 5255 to Laramie by the end of the week. I'll try to keep you informed.
In any case, my university office will know where I am.
I am also enclosing a university form which must be signed by you and me per university regulations. Please return the sign-ed form to me as soon as possible, as it is necessary for me to suhuit the form to our university administration. l Sincerely yours, M
Arthur P. Boresi l BLM-AMC Consultant l
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. s, i, NOTICE <*J:D ACIC;0WLED2tC;T Oy WORK TO BE PERTOR 'ED
!Y 1.7:I'.*EpSITY T*.C'.*LTT OR PT.0TE!!!ONAL STAFF FOP. ,
OUISIDE DIPLOYERS (This form must be signed whenever any faculty or professional staff member of the University of Wyoming enters into professional and counselinn work for supple: entary compensation for an outside agency as authorized by Rer.-
utstions of the Trustees, Chapter VII, .Section 3. .It should be filed with '
the request for approval of outside work.)
The undersigned liniversity employee and outside employer do hereby ac-knowledge that the work to be performed by their employment relationship is independent of Univer'sity employment and affiliation thereto; that the lini-versity will be held harmless for any product thereof; and that the University is not to be connected with the results and may not be involved in publicity, advertising, or other activities related to the work, except for the publica-tion of scholarly works.
Outside Employer: Bishop, Liberman, Cook, Purcell & Reynolds
- Typed Namej 1200 - 17Ah !P)t:reeti, N.W. , Suite 700 ,
Address /
- T Washint on, D.CA/20036 l
By f [ ~
Signat Nicholas S. Reynolds
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i Title P 4': , ner .
1
~ y May 10, 1984 Date of Signature University Employee:
Typed 1:ame Position l-Campus Address I
Signature ;
Date of Signature A
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