FCDAS_Power House_Amendment 0001.pdf

US ARMY CORPS

OF ENGINEERS

Reference number:

U.S. ARMY ENGINEER DISTRICT

CORPS OF ENGINEERS

ANCHORAGE, ALASKA

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ALASKA DISTRICT

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500 L STREET, SUITE 400, ANCHORAGE, AK 99501 Ph: 907.274.7443

AK CORPORATION #: 34752 D (KPB) & AECC249 (COFFMAN)

DESIGN

COMPLETE

REG IS T ER ED P R O F E S S IO NA L ENGINEERMay 18, 2018 No. ME12298

BRENT L. LITTLE

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A1 MECHANICAL PLAN - POWER HOUSE

Sheet 5 of 27

GENERAL NOTES:

MECH

ROOM

TO (E)

AHU-2

TO E AHU-1

(E) DDC

PANEL2 3 4 5 6 7

c

CLIN002:

CRAC-CU CONDENS NG

UNIT, SUSPEND FROM WALL

DO NOT OBSTRUCT WINDOW

BATHROOM

r i

CLIN002:

CRAC-CU CONDENS NG

UNIT, SUSPEND FROM WALL

------ lOj

COMM

CLOSE

(E) DUCT WORK

TO REMAIN SWTCHGEAR

ROOM

HYDROGEN SENSING ,

TO DDC & ALARM —m

GENERATORSUPPORT REFRIGERANT

LINES ALONG WALL. SHOWN

OFFSET FOR CU\RITY.

ROOM

MAINTENANCE DOOR

DEDICATED SPACE

OLD YIECH HYDROGEN SENSING

STATION-TYPICAL OF (2)

REMOVE (E) DUCTWORK

AND DAMPER. SAVE

FOR RELOCATION AND

RECONNECTION.

RO DM

(E) TRANSFER

OPENING.

B 7^YLW /

CONTROL

ROOM

<DM E) FSD15 G) -4 n^Ti SI1st *

RELOCATE EXISTING FIRE/SMOKE

DAMPER AND HEATING COIL

CONNECT (E) 8

DUCTWORK HERE

16 EA UP

TO EF-1 — MUPS(D1100 ROOM NEW DIFEUSER AND

BALANCE DAMPER-

INSULATE VERTICAL

PORTION OF DUCT

(TYP.)------------------ NEW

UPSFUTURE WALL

□ ROOM BATHROOM

RE-USE (E) DUCTWORK, DIFFUSER,

BALANCE DAMPER, AND 3-WAY

HEATING COIL. RELOCATE AWAY

FROM ELECTRICAL EQUIPMENT PER

NEC. ROUTE ABOVE.

i

□CLIN002

C RAC-2

DO NOT ROUTE

REFRIGERANT LINES

ABOVE ELECTRICAL

EQUIPMENT, TYP.

A ROUTE REFRIGERANT LINES

AT CEILING LEVEL (TYP)

DO NOT ROUTE REFRIGERANT

LINES ABOVE ELECTRICAL

EQUIPMENT (TYP.)------------------

CLIN002:

CRAC-1 - 330

10” EA UP

TO EF-2

PLAN NORTH

SCALE: 3/16 = 1-0 1 2 16

3/16=1-0

3.

7.

8.

MAINTAIN NEC REQUIRED CLEARANCES ABOVE ALL NEW WORK.

COORDINATE WITH ELECTRICAL CONTRACTOR TO IDENTIFY FINAL

LOCATIONS OF EQUIPMENT. WHERE IT IS NOT PHYSICALLY

POSSIBLE TO AVOID ROUTING ABOVE EQUIPMENT, PROVIDE DRIP

TRAY TO PREVENT FOREIGN MATERIALS FROM ENTERING NEC

CLEARANCE AREAS. PROVIDE SHOP DRAWINGS PRIOR TO

INSTALLATION.

MOUNT CRAC EVAPORATOR UNITS ON THE WALL. ROUTE

REERIGERANT LINES EROM THE CRAC UNITS THROUGH THE

CONTROL ROOM TO THE CONDENSING UNITS. DO NOT ROUTE

REFRIGERANT LINES ABOVE ELECTRICAL EQUIPMENT. MAINTAIN ALL

REQUIRED NEC CLEARANCES.

ROUTE CONDENSATION LINES FROM THE EVAPORATOR UNITS TO

THE NEAREST SUITABLE DRAIN IN COPPER PIPING SLOPE

AT 1/8 . DO NOT ROUTE ABOVE ELECTRICAL EQUIPMENT. MAINTAIN

NEC REQUIRED CLEARANCES. DO NOT BLOCK WINDOWS.

PROVIDE SUPPORT AND PROTECTION PER STRUCTURAL

SPECIFICATIONS FOR CRAC AND CONDENSING UNITS.

INSTALL HYDROGEN SENSORS AT LOCATIONS INDICATED. SENSORS

SHALL INCLUDE ALARM BEACON AND AUDIBLE ALARM. ALARM AND

STROBE TO ACTIVATE AT LEVELS ABOVE 1% BY VOL. SENSOR TO

REPORT TO DDC CONTROL. ALARMS SHALL BE GENERATED AT THE

DDC MONITORING STATION EOR ALARMS AT THE SENSOR.

CRAC UNIT CONTROL:

a. MONITOR ROOM TEMPERATURE. IF ROOM TEMPERATURE RISES

ABOVE 80 F, ENABLE CRAC UNITS.

b. IF TEMPERATURE CONTINUES TO RISE ABOVE 80 F AFTER CRAC

UNITS HAVE BEEN ENABLED FOR 30 MIN (ADJUSTABLE),

ACTIVATE EF—1 AND EE-2, AND GENERATE ALARM AT DDC.

c. VIA THE (E) DDC SYSTEM, MONITOR CRAC UNITS AND REPORT

ALARMS FROM ON-BOARD BACNET CONTROLLER.

d. PROVIDE CHANGE OF VALUE TRENDS FOR CRAC UNIT

ENABLE/DISABLE AND LOG ALL ALARMS.

EXHAUST EAN CONTROL

a. IN NORMAL OPERATION, EXHAUST FANS SHALL REMAIN OFF.

b. EXHAUST FANS SHALL BE ACTIVATED BY THE DDC SYSTEM OR

THE HYDROGEN SENSORS. ISOLATION DAMPER SHALL REMAIN

CLOSED UNLESS FAN IS ENABLED.

c. IF THE ROOM HYDROGEN LEVEL IS SENSED BY THE HYDROGEN

SENSORS AT A LEVEL ABOVE 1% BY VOL, THEN THE EXHAUST

FANS SHALL ACTIVATE

d. FIRE ALARM AND CONTROLS CONTRACTORS SHALL COORDINATE

SO THAT EIRE ALARM DOES NOT PREVENT EXHAUST EAN EROM

ACTIVATING EXCEPT DURING A FIRE SUPPRESSION RELEASE

MODE.

e. PROVIDE TRENDING OF EXHAUST FAN ENABLE/DISABLE

RELOCATE (E) HEATING COIL THAT SERVES CONTROL ROOM.

RECONNECT COIL TO (E) PIPING LOCATED ABOVE CONTROL ROOM

CEILING. RESTORE CONTROLS TO EULL EUNCTION.

V'V\vvvo>~

T^N ~G I N E E R S

A R

C H

ITE

C

TS

JV

CRAC CU 1 &2

CRAC 2

CRAC 1

A S

-B U

ILT

F

O R

R E

C O

R D

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LY