ML20137J218
| ML20137J218 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 01/22/1976 |
| From: | GIBBS & HILL, INC. (SUBS. OF DRAVO CORP.) |
| To: | |
| Shared Package | |
| ML17198A292 | List:
|
| References | |
| FOIA-85-59 2323-AS-32, 5278, NUDOCS 8512020566 | |
| Download: ML20137J218 (14) | |
Text
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TEXAS UTILITIES SERVICES INC.
AGENT FOR TEXAS UTILITIES GENERATING CCMPANY A C D G FOR DALLAS POWER & LIGHT CCMPANY TEXAS ELECTRIC SERVICE COMPANY TEXAS POWER G LIGHT CCMPANY ADROED BYESI COMANCHE PEAK STEAM ELECTRIC STATICN UNITS NOS. 1 AND 2 ACOUSTICAL TREATMENT 1
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SPECIFICATION 2323-AS-3 2 U
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Specification 2323-AS-32 Page i ACOUSTICAL TREATMENT CONTENTS h
Pace 1.0 SCOPE 1
1.1 WORK INCLUDED 1
1.2 WORK NOT INCLUDED 1
2.0 GENERAL REQUIREMENTS 1
2.1 SAMPLES 1
2.2 SHOP DRAWINGS 2
2.3 CONTRACTOR'S RESPONSIBILITY 2
2.4 JOB CONDITIONS 2
2.5 MAINTENANCE INSTRUCTIONS 2
2.6 REPLACEMENT MATERIALS 2
3.0 APPLICABLE CODES, STANDARDS, AND SPECIFICATIONS 3
4.0 SUSPENSION SYSTEMS 3
4.1 GENERAL 3
4.2 MANUFACTURERS 3
4.3 HANGERS 4
4.4 TYPE OF SYSTEM 4
u.S CONCEALED SUSPENSION SYSTEMS 4
5.0 ACOUSTIC CEILING UNITS 5
s.
Gibbs & Hill, Inc.
Specification 2323-AS-32 Page 11 M
Pace 5.1 MANUFACTURER S
5.2 MINERAL ACOUSTIC TILE 5
6.0 INSTALLATION OF SUSPENSICN SYSTEMS 6
6.1 COORDINATION 6
6.2 HANGERS 6
6.3 MOLDINGS 6
6.4 CONCEALED SUSPENSION SYSTEM 6
7.0 INSTALLATION OF ACCUSTIC CELING UNITS 7
8.0 CLEANING AND PROTECTION 8
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Gibbs & Hill, Inc.
Specification 2323-AS-32 December 18, 1975 Page 1 ACOUSTICAL TREATMENT 1.0 SCOPE 1.1
-WORK INCLUDED a.
This specification covers f urnishing - all
- labor, tools, f
materials, equipment, and supervision for supplying,
-detailing, f abricating, as finishing, the delivering, storing, and installing all acoustical treatment specified herein and shown on the engineering drawings.
b.
Acoustical treatment will be required for, but not limited to, the
- following principal structures and their
-appurtenances, unless otherwise noted:
1)
Electrical & Control building 2)
Administration building 3)
Maintenance building c.
The items of work covered in this specification include, but are not lirited to, furnishing and installing the following:
1)
Mineral acoustic file in concealed suspension system 2)
- Hangers, runner channels, edge moldings, and all other accessories and framing required for a
complete installation 1.2 WORK NOT INCLUDED Metal pan ceilings are not included in this specification.
2.0 GENERAL REQUIREMENTS 2.1 SAMPLES Three sets of 12-inch-square samples shall be submitted for each acoustic unit required.
Each set shall show the full range of color and texture except in the completed work.
Samples will be reviewed by the engineer for color and texture only.
Compliance with all other requirements shall be the exclusive responsibility of the contractor.
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Gibbs S Hill, Inc.
Specification 2323-AS-32 December 18, 1975 Page 2 2.2 SHOP DRAWINGS a..
The contractor shall submit shop drawing details and reflected ceiling plans of acoustical treatment s howing location of acoustic units, lighting fixtures, and all other items of work which will be coordinated with the acoustical treatment.
m b.
Framing and support details shall be shown for work supported by acoustic ceiling suspension system.
The contractor shall certify ccepliance with ASTM C 635 (including structural classification) for each type of suspension system.
2.~ 3 CONTRACTOR'S RESPONSIBILITY The contractor shall study and comply with the attached drawings and this specification with regard to the work shown and required to insure its completeness.
2.4 JOB CONDITIONS
^ shall examine the substrate and the conditions The contractor under which the work will be installed, and shall ' notify the engineer in writing of unsatis factory conditions.
He shall not prcceed with installation until unsatisfactory conditions have been corrected, in a manner acceptable to Gibbs G Hill Field
- En.gineer.
2.5 MAINTENANCE INSTRUCTIONS The contractor shall submit manufacturer's recommendations for cleaning and refinishing each type of acoustic unit used in the work,
including precautions against materials and methods which may be detrimental to finishes and acoustic efficiency.
2.6 REPIACEMENT MATERIALS a.
When work is completed, the contractor shall deliver stock of replacement ~ material to the owner for each type of acoustic unit used in the work.
Units f urnished shall match installed materials, and shall be packaged and marked for identification.
b.
The contractor shall furnish one percent of the total amount,
of acoustic material installed.
i.
Gibbs & Hill, Inc.
Specification 23 23-AS-32 December 18, 1975 Page 3 49 3.0 APPLICABLE CODES, STANDARDS, AND SPECIFICATIONS a.
The materials and workmanship furnished under this specification, including all accessories, shall conform to all applicable local and federal statues, regulations, and safety codes, and the applicable requirements and test procedures of the following standards and organizations:
1)
Acoustical and Insulating Materials Association (AIMA) 2)
American Society for Testing and Materials (ASTM) 3)
Occupational Safety and Health Act (OSHA) 4)
Underwriters' Laboratories, Inc. (UL) h.
The latest edition of applicable codes or standards in effect at the time of the purchase order shall apply.
4.0 SUSPENSION SYSTEMS 4.1 GENERAL The contractor shall coordinate layout with other work which will penetrate or be supported by the ceiling suspension system.
4.2 MANUFACTURERS Suspension systems provided for acoustic treatment shall be produced by one of the following:
a.
Chicago Metal Mfg. Co.
b.
Donn Products, Inc.
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c.
Eastern Products Corp.
d.
Flangeklamp Corporation e.
National Rolling Mills Co., Div. Bundy Corp.
6
Gibbs S Hill, Inc.
Specification 23 23-AS-32 December 18, 1975 Page 4 4.3 HANGERS a.
Hangers shall be as recommended by manufacturer to comply with the specified structural classification ( ASTM C635).
b.
Wire hangers, if recommended, shall not be less than 12-gauge (0.016-inch diameter) galvanized, soft-annealed, mild-steel wire.
c.
Where hanger wires cannot be directly wire-tied to structural or intermediate framing members, the centractor shall provide attachment devices designed for the type of construction used in the work and with a carrying capacity of not less than five times the design loads involved.
4.4 TYPE OF SYSTEM a.
The contractor shall
- provide, at his
- option, either direct-hung or indirect-hung suspension systems as further specified.
b.
Direct-hung concealed suspension system shall be manufacturer's standard T-sha ped mainrunners, stabilizer (spacer) bars, crossrunners, and flat splines as recommended by the manufacturer for suspension system requirements and tile size used in the work.
c.
Indirect-hung concealed suspension system shall be mainrunners, crossrunr.ers, and flat splines as reccamended by the manufacturer for the suspension system requirements and tile used in the work.
The contractor shall provide 1-1/2-inch cold-rolled-steel carrying channels (475 pounds per 1000 linear feet) for support of mainrunners.
4.5 CONCEALED SUSPENSION SYSTLMS a.
Quality standard shall comply with ASTM C635 for the intermediate-duty system.
b.
Paint coatings shall comply with ASTM C635.
c.
Moldings shall be angle type with smooth matte-white painted finish on exposed leg.
Spacer clips shall be provided as required to hold tile field in compression.
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,5 Gibcs & Hill, Inc.
Specification 23 23-AS-32 December 18, 1975 Page 5 5.0 ACOUSTIC CEILINGS UNITS
-5.1 MANUFACTURER Acoustic ceiling units shall be produced by one of the following:
a.
Armstrong Cork Co.
b.
Colotex Corp.
c.
Conwed Corporation d.
Johns-Manville e.
National Gypsum Co.
f.
United States Gypsum Co.
5.2 MINERAL ACCUSTIC TILE a.
Acoustic tile shall comply with the special performance and physical requirements.
h.
The contractor shall provide acoustic tile with joints kerfed and rabbeted or tongue-and-groove joint detail, as required to fit suspension system used in the work.
c.
Sise shall be 12 inches by 12 inches, and not less than 5/8-inch thick.
d.
Edges shall be square.
e.
Flame spread rating shall be 25 or less (ASTM E84).
f.
Finish shall be manufacturer's standard factory-applied white paint finish.
g.
Surface design shall be nondirectional fissured.
h.
Other characteristics shall be as published in the AI.%
Performance Data Bulletin for the specified products.
,s, Gibbs S Hill, Inc.
Specification 2323-AS-32 December 18, 1975 Page 6 6.0 INS *IALIATION OF SUSPENSION SYSTEMS 6.1 COORDINATION a.
Prior to start of acoustic treatment the contractor shall consult other trades and contractors involved to determine areas of potential interference.
Installation of suspension systems shall not begin until interferences have been resolved.
b.
The contractor shall install suspension systems in accordance with manufacturer's printed instructions and in compliance with the requirements of ASTM C635.
6.2 EANGERS Hangers shall be spaced not more than 6 inches from each end and not more than 4 feet on center between ends of members to be supported.
Additional hangers shall be provided for support of fixtures and other items to be supported by the ceiling suspension system, as required to prevent eccentric deflection or rotation of.Supporti_ng runners.
6.3 MOLDINGS Molding shall be provided where ceilings meet walls, partitions, and other vertical elements.
Inside and outside ccrners shall be riter-cut.
6.4 CONCEALED SUSPENSION SYSTEM Mainrunners and stabilizer bars shall be spaced to support acoustic tile and other work resting in or on the
- ceiling, as required to comply with specified performance requireme nts.
Mainrunners shall be supported directly from hangers, and shall not bear on walls or partitions.
Crossrunners and splines shall be installed prcgressively with acoustic tile as specified.
The contractor shall. install moldings with exposed lag in the same plane as exposed surface of accustic tile.
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Gibbs & Hill, Inc.
Specification 2323-AS-32 December 18, 1975 Page 7 7.0 INSTALLATICN OF ACOUSTIC CEILING UNITS Y
a.
The contractor shall not install acoustic ceilings until exterior openinge are closed and roofs have been made weathertight; mechanical, electrical, and other work above ceilings has been completed; wet work has been installed; and temperature and relative humidity have reached levels which comply.with acoustic material manufacturer's recommendations for the units to be used in the work.
b.
Materials shall be installed in - accordance with manufacturer's printed instructions and other recommendations applicable to work.
- c.
Wherever
- possible, border areas shall be balanced to avoid having units of less than one-half-unit width.
d.
Tile shall be installed progressively by inserting edge of tile into bottom flange of mainrunners.
Crossrunners shall be provided as required by spacing of mainrunners, and type and size of tile used in the work.
Crossrunners shall be installed at right angles to mainrunners, with flanges inserted into joints of tile.
Flat metal splines shall be placed in joints not occupied by mainrunners or crossrunners.
e.
Joints shall be aligned in adjacent courses te form uniform, straight joints parallel to room axis in both directions,
unless otherwise shown.
l f.
Adjoining tile shall be fitted to form flush, tight joints, and shall be scribed and cut for accurate fit at borders and around work which penetrates ceiling.
g.
Tile field shall be held in compression by inserting spring steel spacers between tile and moldings at 12 inches en center.
h.
Access units shall be fabricated from special suspension system access members and the same acoustic tile units used in remainder of ceiling.
Edges of tile shall be modified as required to allow for lif ting of access units.
i.
The contractor shall provide 12-inch by 2u-inch access. units, unless otherwise shown.
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C Gibbs & Hill, Inc.
Specification 232'3-AS-32
~
December 18, 1975 Page 8 j.
Access units shall be located to provide uniformly distributed units equal to 25 percent of total area of each ciniling.
8.0 CLEANING AND PROTECTION The contractor shall clean exposed surfaces of acoustic units and suspension systems (if any) in accordance with manufacturer's instructions.
Units and members which are damaged or which cannot be cleaned shall be removed and replaced.
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FIGURE 1.
Page 1 of 2
CCMANCHE PEAX STE#i ELECTRIC STATICN
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CESIGN CHAttGE AUTHCRIZATICN (WILL) (XI%%)CRII) SE IlCCRFORATED It! DESIGil C0CUME:ITS CCA ::0.
944 Rev. I 1.
SAFETY RELATED COCUMENT:
YES XX NO 2.
CRIGItATOR: C9PE XX ORIGI GL CESIG !ER 3.
DESCRIPTION:
2323-AS-32 0
A.
APPLIC.1BLE SPEC /CWG)CCC' JEU 2323-Al-051?
REY.
a B.
OETAILS THIS REVISION VOIOS AND SUPERSEDES OCA-941 Rev. O.
Many orablems were incurred durino insta11ktion of concealed scif re accustical ceiline in the Administration buildina due *n the astur. ne the svs*=m_
31sn.
-~-atate accessibility into the ceiline is some what res*ric*ad.
Colutinn-(1) n lata e
referaace to Electriesl and Centrol buildine in AS-32 "Accustiest Tren -ent " Sectica 1.1.b.
(2) The " Reflected Ceiline Plan lecend" on deswino 2323 As-051? should be revised to deoict the followine svstem for the accustical tile ceiline: Substitute an exoosed crid lav-in syste"1 for the concealed soline. Ceiline tile is to be minaral acoustical tile " Recency" bv conwed (or equal). Stra-5/o" x ?a" w h_aa acn-di r.e-V tional fissured with factcev acolied whita finish.
s'la-. sarand shall be M er tass ee-ASTM rR4.
- See Attached
- 4.
SUPPORTING 00CUMENTATION:
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APPROVAL SIGNAT*2ES:
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CR!GI:lATOR:
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DESI3N REPRESENTATI E:
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'/ENCCR T"dNSMITTAL RECUIRED: YES NO XX 7.
STANCARC OISTRIBUTICN:
CCA ~C :t 11-se
' JOB No. 35-1195 ARMS (original)
(1) 1" ECEIVEC Quality Engineering (1) l 75 f:r orig. :esign.
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OCA-944 Rev. 1 Page 2 of 2
. n, Grid system is to be an exposed grid, intemediate duty system per ASTM C635. Conwed 550 series or equal may be used.
I Note: The concealed spline acoustical syst is laid'out on a l'-0" x l'-0" grid. Lighting originally designed fo layout was l'-0" x 4'-0".
The substituted lay-in system is a 2'-0" x grid system; cutting of the
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ceiling tile may be performed so that t
' 0" x 4'-0" lighting may be accomodated.
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E seGe ms t m 8 OSSsGNERS CONSTRUCTORS OtagCT OtAL EXTENSICM 308 NO. 351'195
<*'s> too 4 4 5 0 ECEIVE
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19F & R DCC DIST.
JUL 2 01977 GTN-20085 l
l ECEIVE 0000
._l Texas Utilities Generating mpany 2001 Bryan Tower CHILDRES S l Dallas, Texas 75201 SSOLINi'l Attention:
Mr. Homer C.
- Schmidt, WELLER f
Project Manager - Nuclear Plants kGC0 QA {
Gentlemen j
TEXAS UTILITIES GENERATING COMPANY l
COMANCHE PEAK STEAM ELECTRIC STATION f
1980 2300 MW INSTALLATION GsH PROJECT NO. 2323 l
05309 LOUVERED CEILING I
SPECIFICATION NO. 2323-AS-57 f7/g REF:
TGH-5020 J
By copy of this letter to Brown & Root, Plantsite, we are for-warding ten (10) copies of Specification 2323-AS-57 " Louvered ceiling" dated July 1, 1977 for construction.
We offer the following in response to TUSI comments transmitted via the referenced letter.
1.
TUSI reference added 2.
Section 4.0 revised to include two (2) additional qualified manufacturers.
Very truly yours, GIBBS & HILL, Inc.
f f W.
J gQ R. E. Hersperger REH-NLG:smm Project Manager 1 Original + 5 Copies - 6A cc:
J. Merritt (TUSI, Site) - lL, lA L. A. Ashley (B&R, Hous ton) - lL,'2A H. C. Dodd (B&R, Site)
- 2L, 10A seve=ru avenue new ve = =. *. v. ic oo, caess eiens u.me. ve==
TEXAS UTILITIES SERVICES INC.
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June 21E 47@ E E '.
TCH-5022 JOB NO. 35-1195 Mr. R. E. Hersperger ECEIVE-Gibbs & Hill, Inc.
DODD 393 Seventh Avenue JUN 291977 CHILDRESS New York, New York 100 ECElyE BUSSOUNI WELLER COMANCHE PEAK STEAM ELECTRIC STATION-TUGCO QA DOCUMENT STATUS REF: CTN-19204 FILE No. 6300
Dear Mr..Hersperger:
We have reviewed the following documents and have ass:.gneo cnem c te b
Thf following status:
Source Drug /Doci Rev.
Title Status Missile Resisting Doors GTN-19204 2323-AS-54 Invitation to Bid 1
Status No. Definition:
1.
Approved 2.
Approved Except As Noted on Attached 3.
Not Approved - Correct and Resubmit per Attached Comments 4.
For Information Only Comments: See Attached If,you have any questions or coc:ments, please contact this office.
Very truly yours, W
v.
H. C. Schmidt
/ Proj ect Manager-Nuclear Plants HCS/
skt cc:
. E. Hersperger 0,3c J. T. Merritt, ic H. C. Dodd, 2c L. A. Ashley, Ic e
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TGE-5022 June 21, 1977 Comments:
This bid package is approved with note that alternatives to five doors are presently being evaluated. The specific doors are 29A and 295 for both units and E-40A.
An addendum should be issued to provide for credit for any door deleted from plant requirements.
Section 3.5.a Torna'do loadings are the old PSAR criteria. Per conversation with Ralph McGrane, the new criteria should be added to the bid package by addendum. Additionally, the 580 psf acting outward appears to be excessive; please check.
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