ML20205S867

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Rev 0 to Mechanical Design Criteria Document 18691-M-001
ML20205S867
Person / Time
Site: Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date: 01/19/1987
From:
BECHTEL GROUP, INC.
To:
Shared Package
ML20205Q691 List:
References
18691-M-001, 18691-M-1, NUDOCS 8704070147
Download: ML20205S867 (11)
v • d • e


Text

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18691-M-001 DESIGN CRITERIA DOCUMENTS COVER SHEET FOR NORTHEAST UTILITIES SERVICE COMPANY CONNECTICUT YANKEE POWER STATION NEW SWITCHGEAR BUILDING PROJECT JOB NO: 18691-00 DISCIPLINE: Mechanical 8704070147 870401 PDR ADOCK 05000213 R PDR 0 gh Issued for Use g / .

J, '[y[g REV, GROUP 0 40. DATE REVISION DESCRIPTION ORIGINATOR SUPV.

DATE [ROJEU ENG, DATE B -

APPROVAL

18691-M-001 PAGE REVISION INDEX Page, Revision i 0 ii .

0 1 0 2 0 3 0 4 0 5 0' 6 0 7 0 8 0 i Rev. 0

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18691-M-001 TABI.E OF CONTENTS E*KS

1.0 INTRODUCTION

1 2.0 CODES AND STANDARDS 1 3.0 MAJOR PLANT PARAMETERS 3 4.0 GENERAL CRITERIA FOR DESIGN 3 -

5.0 SPECIFIC CRITERIA FOR DESIGN 5 r

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18691-M-001

1.0 INTRODUCTION

l 1.1 PURPOSE AND SCOPE The purpose of this document is to establish the mechanical engineering j design criteria for the design and construction of the Connecticut Yankee switchgear building.

i The mechanical design criteria for the project apply to the systems for  !

which Bechtel has design responsibilities. The design criteria form the '

technical basis for system design and equipment selection as the result of specific client and site conditions, code requirements, economic analysis, standardization, and existing power plant design experiences 3 and technology.

The FDSA or FSAR and license are the controlling documents for the plant design of those portions of a.he plant which are nuclear safety related.

The Systematic Evaluation Program Report (NUREG-0826) will also be used  :

to determine licensing commitments for design activities of Connecticut Yankee.

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, 1.2 GENERAL DESIGN CRITERIA The Connecticut Yankee Power Station is a nominal 582 MWe pressurized

water reactor.

1.3 PRINCIPAL BECHTEL CONSTRUCTION, INC. CONTROL DOCUMENTS The project is governed by the Bechtel Engineering Procedures Manual which assimilates applicable Bechtel Engineering Department Procedures

]

j (EDPs) and provides standard procedures for planning, organizing, and executing project engineering operations. Guidelines for the engineering i

design of the plant are stated in the Bechtel Mechanical Engineering Standards.

I 2.0 CODES AND STANDARDS In general, the edition or addenda of the referenced codes and standards in effect on the date of award of the purchase order shall apply except as otherwise noted on the procurement and other documents. Specifically, for the codes and standards under the purview of the NRC, the issue dates, as specified in the NRC documents, shall apply. If a conflict should arise between standards, the more stringent requirements shall apply.

2.1 STATE AND LOCAL CODES AND STANDARDS

s. Connecticut State Uniform Fire Prevention and Building Code
b. Connecticut State Plumbing Code
c. The BOCA Basic Mechanical Code 1 Rev. O i

w 18691-M-001 2.2 ALL OTHER CODES, STANDARDS, AND GUIDES 2.2.1 Codes

a. American Society of Mechanical Engineers (ASME), Boiler and Pressure Vessel Code
b. National Fire Codes (NFC)
1) NFPA 10, Standard for Portable Fire Extinguishers 4
2) NFPA 12A, Halogenated Fire Extinguishing Agent
  • Systems - Halon 1301
3) NFPA 13, Sprinkler Systems l 4) NFPA 14, Standpipe and Mose Systems

,5 ) NFPA 24, Outside Protection

6) NFPA 70, National Electrical Code
7) NFPA 72D, Proprietary Signaling Systems

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8) NFPA 72E, Automatic Fire Detectors
9) FFPA 80, Fire Doors and Windows 3

I IO) NFPA 90I, Air Conditioning and Ventilating Systems

11) NFPA 101, Life Safety Code 2.2.2 Regulatory Requirements -
a. 10 CFR 21
b. 10 CFR 50, Appendix R 4
c. Division l' Regulatory Guides, as applicable
d. Standard Review Plans (NUREG-0800), as applicable
e. Branch Technical Positions, as applicable i 2.2.3 Standards
a. Factory Mutual (FM)
b. Underwriters Laboratory (UL)
c. American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) 2 Rev. 0 e - .-
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d. Sheet Metal and Air Conditioning Contractors National Associa-tion (SMACNA) 4
e. Air Moving and Conditioning Association (AMCA) i
f. Air Conditioning and Refrigeration Institute (ARI) 3 American Society for Testing and Materials (ASTM)
h. National Electrical Manufacturers Association (NEMA)
1. Air Diffusion Council (ADC)
j. Associated Air Balance Council (AABC)
k. Anti-Friction Bearing Manufacturers Association (AFBMA)
1. National Sanitation Foundation (NSF)

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a. Cast Iron Soil Pipe Institute (CISPI)

J n. American Water Works Association (AWWA)

o. Manufacturers Standardization Society 1
p. Occupational Safety and Health Administration (OSHA) Standard
q. Pipe Fabricators Institute (PFI) Standards t'

, r. Plumbing and Drainage Institute Standards

s. American Welding Society (AWS)
t. American National Standards Institute (ANSI)
u. Institute of Electrical and Electronics Engineers (IEEE) l
v. American Institute of Steel Construction (AISC) I 3.0 MAJOR PLANT PARAMETERS 1

3.1 GENERAL Project Name Connecticut Yankee Power Station  !

-Bechtel Job 18691 Owner (Operator) Northeast Utilities i

Site Location Haddam Neck, Connecticut (adjacent to Connecticut River and accessed by i Injun Hollow Road) i Plant Base Elevation 21.0' asl-i i

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Plant Type A single PWR unit of 582 MWe nominal capacity Plant Design Life 40 years l 1

l Commercial Operation January 1, 1968 l l

3.2 NEW SWITCHGEAR BUILDING  !

l A three-story, Category I, reinforced concrete building is to be constructed to comply with 10 CFR 50, Appendix R requirements and to provide spare capacity for future additions / modifications. The building will be located north of the plant Primary Auxiliary Building (PAB) and west of the waste disposal building. It will be approximately 34 feet by 64 feet in size with the third floor at elevation 41'-6". The third floor will house the category I switchgear equipment and alternate shutdown panel.

4.0 GENERAL CRITERIA FOR DESIGN 4.1 OUTSIDE AMBIENT CONDITIONS AND AIR QUALITY The following design values shall be used for the station.

a. Temperatures 1
1) Average (Monthly) 50 F (Hartford, Conn.)
2) Maximum 1% (Summer)* 88 F db
76 F wb
3) Minimum 99% (Winter)* 3 F db
4) Extremes Maximum (hourly) 102 F (July 1966, Hartford,  ;

Connecticut) l

. l Minimum (hourly) -26 F (January 1961, Hartford, Connecticut)

b. Wind
1) Maximum velocity (design) 115 mph
2) Tornado wind velocity 360 mph
3) For HVAC system sizing 15 mph

! *From ASHRAE Fundamentals Handbook, 1981, for New Haven and New London, Connecticut l

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18691-M-001 All outdoor equipment will be designed to withstand a low ambient tempera-ture of -26 F.

For all other weather conditions refer to Civil Structural Design Criteria.

i 4.2 INSIDE AMBIENT DESIGN CONDITIONS FOR THE NEW SWITCHGEAR BUII. DING 4.2.1 Third Floor The ventilation and air conditioning system will be designed to limit the summer ambient average space temperature to 75 F during normal plant i operation and 104 F during the emergency mode of operation.

1 -

The heating system will be designed to maintain the area at a minimum temperature of 65 F or above. The battery room, however, will be main-

! tained at a minimum temperature of 75 F by providing supplemental heating.

i Fresh air makeup will be provided based on the battery room exhaust or I the personnel occupancy requirements, whichever is greater.

4.2.2 Fi'rst and Second Floors

  • The HVAC for the first and second floors will be designed to maintain 75 F inside with 88 F db outside in summer and 70 F inside with 3 F db I

outside in winter.

j A 2000 cfm makeup and exhaust capability will be provided per NUSCO i

directions. Individual electric unit heaters may be provided, if required, for the laundry and machine shop areas.

4.3 FIRE PROTECTION A Halon fire suppression system and cross-zoned detection system will be provided for the third floor, i

An automatic wet pipe sprinkler system will be provided for the first and second floors. .-

5.0 SPECIFIC CRITERIA FOR DESIGN

5.1 HVAC 5.1.1 Third Floor l a. A split system consisting of an air handling unit (safety related), condensing unit (nonsafety related), and refrigerant piping (nonsafety related) and controls will be provided.
b. The air handling unit will consist of a prefilter, an electric heater, a direct-expansion cooling coil, and a fan section.

The fan is safety related, and the remaining components are

functionally nonsafety related; however, they will be struc-turally designed to not interfere with the operation of fan i under all design basis conditions.

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c. The system will be sized for personnel comfort even though the occupancy will be very limited. The unit will be sized to maintain 75 F with 88 F outside.
d. The heating coils will be sized to maintain 65 F inside with 3 F outside, e.

A' limited fresh air makeup capability will be provided com-mensurate with the battery room exhaust or personnel habitability requirements, whichever is greater.

f. The battery room will be exhausted directly to outside to prevent any gas buildup.

3 The ductwork and associated hangers and supports will be seismic Category I.

h. Fire, isolation, and balancing dampers will be provided, as required.
i. No HEPA or charcoal filters will be provided.
j. The HVAC system will be designed to withstand tornado effects.
k. Supplemental heating for the battery room will be provided to maintain a minimum of 75 F inside the room.

5.1.2 First and Second Floors a.

A split system consisting of an air handling unit, condensing unit, and refrigerant piping and controls will be provided.

The air handling unit will consist of a prefilter, an electric heating coil, a direct-expansion cooling coil, and a fan section.

b. The unit will be designed and sized to handle 2000 cfm outside makeup air.
c. The HVAC system will be designed for personnel comfort in the health physics area (75 F inside with 88 F outside and 70 F inside with 3 F outside).
d. Dampers, including fire dampers, will be provided, as required.  ;

e.

Moderate efficiency prefilter and high efficiency particulate air (HEPA) filters will be provided in the filter unit. Char-coal adsorbers will not be provided.

f.

Electric unit heaters in the machine shop may be provided to L

supplement heating, if required.

3 The system is nonsafety related and will not be functional following an accident.

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18691-M-001

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5.2 FIRE PROTECTION'

'5.2.1 Third Floor ~

a.  !

A Halon suppression system will be provided per NFPA 12A.

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, b. A 100 percent connected reserve capacity of Halon supply will be

\

t j provided, or as otherwise required by the insuring authority. '

c. The Halon distribution piping will be supported for seirmic Class II/I considerations.
d. For detection system criteria, refer to electrical / control systems design criteria. ,

5.2.2 First and Second Floors

a. Automatic wet pipe sprinkler fire suppression system will be provided per NFPA 13.

j b. These floors will be classified for ordinary hazard occupancy (group 2).

l c. The sprinkler system will be sized for 0.18 gpa/ft 2 of covered area or a minimum of 400 spa flow rate or as otherwise required by the insuring authorities.

d.

The sprinkler system piping will not be supported seismically.

5.2.3 Standpipe / Hose Stations a.

At least one class III hose station will be provided at each ficor per NFPA 14.

b. Each hose station will be provided with no more than 100 feet of 2k-inch hose.

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c. Each standpipe will be sized for minimum 500 gym flow.
d. Standpipe not exceeding 100 feet'in height will be at least a

4 inches in size; standpipes exceeding 100 feet in height will be at least 6 inches in size.

e. If more than one standpipe per floor is required, the design flow of 500,spm will be increased by 250 spa 1.er additional standpipe.

f.

The minimum residual water pressure at the topmost outlet of standpipe must be 65 psi with 500 spa flow. (Adequate pressure must be provided by NUSCO at the fire main header connection.)

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_4 18691-H-001 5.3 PLUMBING

a. The second and third floor drainage system will be routed to the stora drainage system. The first floor drainage system will be routed to the sump and subsequently discharged to the liquid radwaste system. No other plumbing will be provided.
b. 5 elf-containedeyewashstationswillbeprovided(byothers).
c. Bottled water coolers will be provided (by others).

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