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Transmittal
To: Durham College of Applied Arts andTechnology
Project No.: 18130
Address: 2000 Simcoe St N Date: October 29, 2018
Oshawa, ON L1H 7K7 Your No.:
Attention: Mr. Donny Gough
Project Name: Durham College Whitby Campus Weld Shop Storage Shed
For your: “ Approval Via: “ Mail
Distribution “ Courier
Information and use “ By hand
“ Review and comment “ To be picked up
Action taken: “ Reviewed “ Fax
“ Reviewed as modified E-mail
“ Revise and resubmit
“ Not reviewed
Qty.: DrawingNo.:
IssueNo.:
RevisionNo.:
Description:
1 email - - Addendum No. 1
Remarks: c.c. Mr. Doug Crossman, Durham College of Applied Arts and Technology
___________________________________Doug McLaughlin, P. Eng.
Form M-1 Rev. 1 12-07-02Transmittal.wpd
Addendum No. 1
Project No.: 18130
Date: October 29, 2018
Project: New Weld Shop Gas Storage Building, Whitby Campus, 1610 ChamplainAvenue, WhitbyDurham College of Applied Arts and Technology
The following information supplements and/or supersedes the bid documents issued on October 18, 2018This Addendum forms part of the contract documents and is to be read, interpreted, and coordinated with all otherparts. The cost of all contained herein is to be included in the contract sum. The following revisions supersedethe information contained in the original drawings and specifications issued for the above-named project to theextent referenced and shall become part thereof.
GENERAL NOTES
1 .1 Refer to the attached drawings S101, S201, S301, and S501 issued for permit and tenderoutlining revised framing requirements for the new storage building enclosure.
1 .2 Refer to the attached mechanical addendum MA-1 dated October 29, 2018.
1 .3 All bidders shall include a $3,000.00 cash allowance in their bid for independent testing andinspection.
1 .4 Refer to the mechanical for the revised scope of work inside the existing building.
1 .5 All winter heat for construction of the new building shall be included in the base bid.
END OF ADDENDUM NO. 1
Barry Bryan AssociatesArchitects, Engineers, Project Managers
Doug McLaughlin, P. Eng
DM/gs
Attachments:Structural Combined Drawings (4 Pages)Sharma & Partners Revised Mechanical Addendum MA-1 (18 Pages)
Form 6.1-3 Rev. #0 19-06-0118130 Addendum No. 1.wpd
CONCRETE
LOCATION CLEAR COVER
CONCRETE REINFORCEMENT
GENERAL
STRUCTURAL STEEL
BEARING PLATE SCHEDULE
MARK SIZE ANCHORAGE REMARKS
COLUMN SCHEDULE
C1
MASONRY
CONCRETE BLOCK MASONRY
COMPRESSIVE STRENGTH (MPa)
LOCATION NET
GROSS (f'm) FOR
HOLLOW BLOCK
GROSS (f'm) FOR SOLID
OR GROUTED BLOCK
ASPHALT PAVING
C2
LOCATION
DESIGN STRENGTH
(28 DAYS)
SLUMP
EXPOSURE
CLASS
MASONRY WALL SCHEDULE
MARK THICKNESS VERTICAL REINFORCING
HORIZONTAL
REINFORCING
REMARKS
METAL ROOFING
INSULATION
FLOATING CONCRETE
SLAB FOUNDATION
WALL PLATE SCHEDULE
MARK SIZE ANCHORAGE REMARKS
NAME OF PROJECT :
LOCATION OF PROJECT :
OBC Reference
No
Addition
Addition and Renovation
3.01 Project Type:
Change of use
Yes
entire building
none
Non-combustible Required
3.05
3.10
3.11
3.12
3.09
3.14
3.15
3.13
Sprinkler System
Standpipe System
Fire Alarm System
Actual construction
ConstructionType:
Number of streets/
fire fighter access:
Water Service/
Supply is Adequate
Combustible Permitted
3.02Major Occupancy
Classification:
3.1.2.1.(1)
3.2.2.10 & 3.2.5
3.2.2.20. - 83
3.2.1.5 & 3.2.2.17
3.2.9
3.2.4
3.2.2.20. - 83 &
3.2.1.4
3.2.3
Gross Area (m²)[A] 1.4.1.2.
selected compartments
selected floor areas
3.2.2.20. - 83 &
3.2.1.4
CERTIFICATE OF PRACTICE NUMBER : 5192
250 WATER STREET, SUITE 201
WHITBY, ONTARIO, CANADA. LIN 0G5
TEL : (905) - 666 - 5252
(Toronto) (905) - 427 - 4495
FAX : (905) - 666 - 5256
Durham College, Whitby Campus,
Weld Shop Storage Shed
1610 Champlain Avenue, Whitby, Ontario
Ontario Building Code
Data Matrix Part 3
3.16 Importance
Category:
4.1.2.1. (3) &
T4.1.2.1.B
Low Low human Occupancy Post-disaster shelter
DATE :
3.00Building Code Version: O. Reg. 332/12 Last Amendment: O. Reg. 191/14
New Renovation
Description ____________________________________________________
Use
___________________________________________
___________________________________________
___________________________________________
Occupancy
_________________
_________________
_________________
-
-
-
-
3.03Superimposed
Major Occupancies:
Yes No
Description ____________________________________________________-
Building Area (m²)3.04 Existing
_________
_________
_________
_________
Description
_________________________________
_________________________________
_________________________________
Total=
-
-
-
-
New
_________
_________
_________
_________
-
-
Total
_________
_________
_________
_________
-
-
Existing
_________
_________
_________
_________
Description
_________________________________
_________________________________
_________________________________
Total=
-
-
-
-
New
_________
_________
_________
_________
-
-
Total
_________
_________
_________
_________
-
-
[A] 1.4.1.2.
3.2.2.7
[A] 1.1.2.
3.06 Mezzanine Area
(m²)
Existing
_________
_________
_________
_________
Description
_________________________________
_________________________________
_________________________________
Total=
New
_________
_________
_________
_________
Total
_________
_________
_________
_________
3.2.1.1
3.07 Building Height [A] 1.4.1.2 &
3.2.1.1
______________ Storeys above grade ________ (m) Above grade
______________ Storeys below grade
____________ street(s)
3.08 High Building Yes No
____________ Group/ Div. __________________________
Not Required
Proposed:
Required
basement
in lieu of roof rating
Not Required Required
Not Required Required
Restriction:
Non-combustibleCombustibleActual:
NoHeavy Timber Construction:
Combination
Yes
Normal
High Minor storage building Explosives or hazardous substances
Post-disaster
3.17 Seismic Hazard
Index:
3.19 Barrier-free Design: Yes Explanation ______________________________________
No
3.18 Occupant Load: Floor Level/ Area Occupancy Type Based On Occup. Load
__________________ ________________ _________ ________
__________________ _______________ _________ ________
- - - -
(I Fa Sa (0.2))=_________________________
Seismic design required for Table 4.1.1.18. items 6 to 21:
((I Fa Sa (0.2))> or = 0.35 or Post-disaster)
0
E
4.1.2.1. (3)
4.1.8.18.(2)
No Yes
3.1.17
3.8
3.20 Hazardous
Substances:
Yes Explanation ______________________________________
No
3.3.1.2 &
3.3.1.19
3.21 Required Fire
Resistance
Ratings:
Horizontal Assembly Rating Supporting Non combustible
Assembly (H) in lieu of rating?
Floors over basement _______ __________
Floors _______ __________
Mezzanine _______ __________
Roof _______ __________
-
No Yes N/A
-
No Yes N/A
-
No Yes N/A
-
No Yes N/A
3.22 Spatial Separation:
3.23 Plumbing Fixture
Requipments:
Ratio: Male/Female = 50:50 Except as noted otherwise
Floor level/ Area Occupant OBC Fixtures Fixtures
Load Reference Required Provided
__________ _____ ____ ________ ______ _______
__________ _____ ____ ________ _______ _______
__________ ____ ____ ________ _______ _______
__________ _____ ____ ________ _______ _______
Noncombustible
construction
Combustible
construction w/
noncombustible
cladding
(Hours)
FRRProposed
or H/L(m)
L.D. L/H
North
South
Wall Area
Of EBF
(m²)
Permitted
Max. % Of
Openings
% Of
Openings
East
(Addition wall areas contiued below )
-
West
-
-
-
3.7.4
3.24Energy Efficiency: Compliance Path: ___________________________________________________
Climatic Zone: __________ OBC Table: _____________
N/A
N/A
3.25 Notes:
BARRY BRYAN ASSOCIATESNAME OF PROJECT :
N/A
WALL TYPES SCHEDULE
ROOF TYPES SCHEDULE
GENERAL NOTES AND
SCHEDULES
S101
ASSOCIATESBARRY BRYAN
PROJECT NO:
FILE:
DRAWING NO:
SCALE:
DATE:
CHECKED BY:
DRAWN BY:
DESIGN BY:
DRAWING:
PROJECT:
REVISIONSNO. DATE BY
DRAWINGS ARE NOT TO BE USED FOR CONSTRUCTION UNTIL SIGNED
UPON REQUEST. REPRODUCTION OF DRAWINGS IN PART OR WHOLECOPYRIGHT PROPERTY OF THE CONSULTANT AND MUST BE RETURNEDALL DRAWINGS, SPECIFICATIONS AND RELATED DOCUMENTS ARE THE
AND SEALED BY THE CONSULTANT.
WITHOUT THE PERMISSION OF THE CONSULTANT IS FORBIDDEN.
CHECK AND VERIFY ALL DIMENSIONS AT THE SITE.
ISSUESNO. DATE BY
DO NOT SCALE THE DRAWINGS.
DURHAM COLLEGE
WHITBY CAMPUS
WELD SHOP
STORAGE SHED
1610 CHAMPLAIN AVENUE
WHITBY, ONTARIO
18130
LOCATION PLAN
N.T.S.
ASPHALT LAP JOINT
xx
xx
xx
xx
xxxxx
xx
xx
xx
xx
x
x
x
x
x x x
x
x
xx
x x x x x
ASSOCIATESBARRY BRYAN
PROJECT NO:
FILE:
DRAWING NO:
SCALE:
DATE:
CHECKED BY:
DRAWN BY:
DESIGN BY:
DRAWING:
PROJECT:
REVISIONSNO. DATE BY
DRAWINGS ARE NOT TO BE USED FOR CONSTRUCTION UNTIL SIGNED
UPON REQUEST. REPRODUCTION OF DRAWINGS IN PART OR WHOLECOPYRIGHT PROPERTY OF THE CONSULTANT AND MUST BE RETURNEDALL DRAWINGS, SPECIFICATIONS AND RELATED DOCUMENTS ARE THE
AND SEALED BY THE CONSULTANT.
WITHOUT THE PERMISSION OF THE CONSULTANT IS FORBIDDEN.
CHECK AND VERIFY ALL DIMENSIONS AT THE SITE.
ISSUESNO. DATE BY
DO NOT SCALE THE DRAWINGS.
DURHAM COLLEGE
WHITBY CAMPUS
WELD SHOP
STORAGE SHED
1610 CHAMPLAIN AVENUE
WHITBY, ONTARIO
181301:50
FLOOR PLAN
1:50
REFLECTED CEILING PLAN
FLOOR PLANS
S201
1:50
FOUNDATION PLAN
1:50
ROOF FRAMING PLAN
1:50
DEMOLITION PLAN
1:50
ROOF PLAN
ASSOCIATESBARRY BRYAN
PROJECT NO:
FILE:
DRAWING NO:
SCALE:
DATE:
CHECKED BY:
DRAWN BY:
DESIGN BY:
DRAWING:
PROJECT:
REVISIONSNO. DATE BY
DRAWINGS ARE NOT TO BE USED FOR CONSTRUCTION UNTIL SIGNED
UPON REQUEST. REPRODUCTION OF DRAWINGS IN PART OR WHOLECOPYRIGHT PROPERTY OF THE CONSULTANT AND MUST BE RETURNEDALL DRAWINGS, SPECIFICATIONS AND RELATED DOCUMENTS ARE THE
AND SEALED BY THE CONSULTANT.
WITHOUT THE PERMISSION OF THE CONSULTANT IS FORBIDDEN.
CHECK AND VERIFY ALL DIMENSIONS AT THE SITE.
ISSUESNO. DATE BY
DO NOT SCALE THE DRAWINGS.
DURHAM COLLEGE
WHITBY CAMPUS
WELD SHOP
STORAGE SHED
1610 CHAMPLAIN AVENUE
WHITBY, ONTARIO
18130
1:50
BUILDING SECTION
1:50
WEST ELEVATION
1:50
NORTH ELEVATION
1:50
EAST ELEVATION
1:50
SOUTH ELEVATION
BUILDING SECTION AND
EXTERIOR ELEVATIONS
S301
1:50
BUILDING SECTION
1:25
DETAIL SECTION
ASSOCIATESBARRY BRYAN
PROJECT NO:
FILE:
DRAWING NO:
SCALE:
DATE:
CHECKED BY:
DRAWN BY:
DESIGN BY:
DRAWING:
PROJECT:
REVISIONSNO. DATE BY
DRAWINGS ARE NOT TO BE USED FOR CONSTRUCTION UNTIL SIGNED
UPON REQUEST. REPRODUCTION OF DRAWINGS IN PART OR WHOLECOPYRIGHT PROPERTY OF THE CONSULTANT AND MUST BE RETURNEDALL DRAWINGS, SPECIFICATIONS AND RELATED DOCUMENTS ARE THE
AND SEALED BY THE CONSULTANT.
WITHOUT THE PERMISSION OF THE CONSULTANT IS FORBIDDEN.
CHECK AND VERIFY ALL DIMENSIONS AT THE SITE.
ISSUESNO. DATE BY
DO NOT SCALE THE DRAWINGS.
DURHAM COLLEGE
WHITBY CAMPUS
WELD SHOP
STORAGE SHED
1610 CHAMPLAIN AVENUE
WHITBY, ONTARIO
18130
DETAIL SECTIONS
S501
1:10
DETAIL
1:10
DETAIL
1:10
TYPICAL FENCE DETAIL
1:10
DETAIL
1:10
DETAIL
1:10
DETAIL
1:30
CORNER BAR DETAIL
1:10
TYPICAL INTERIOR WALL DETAIL
1:10
TYPICAL COLUMN CONNECTION DETAIL
1:10
DETAIL
1:10
DETAIL
SHARMA & PARTNERS INC. I 85 Curlew Drive, Unit 108 Toronto, ON M3A 2P8 | t: 416-291-8822
SHARMA & PARTNERS INC. Mechanical Addendum
Client Durham College, 1930 Simcoe road N, Oshawa Project: Welding Shop Piping, Whitby.
Mechanical Addendum Issue Date: Project Number:
MA-1 October 29, 2018 2018-1044
The following items are changes to the tender contract documents for this project. Contractor shall include the cost of these addendum items in the tender quotation. All material and workmanship are to be described in the contract documents unless otherwise stated. Contractor shall identify addendum numbers included in the tender quotation when submitting tender / bid form.
1.0 DRAWINGS & SPECIFICATIONS( Spec Section 20 07 00 Piping system reissued):
1.1 Section 20 07 00 Welding shop Piping system issued with the tender package contains information
requested during the site visit. This section includes types of piping, valves, fittings, joints, cylinders, manifolds, flash arresters, regulators, check valves, detection systems, accessories etc. to be used in the project. All products used shall be code compliant as noted and TSSA approved prior to installation.
2.0 STAGING OF SCOPE OF WORK:
2.1 Durham College has decided to complete ONLY THE OUTSIDE SCOPE OF WORK including the
Gas Cylinders, headers, distribution and new piping connections to existing pipe penetrations serving the existing Phase 2 weld Shop areas.
2.2 Existing Piping through the wall and all interior piping distribution installation shall be in Stage 2 scope
and NOT INCLUDED IN THIS TENDER PACKAGE. Interior shut off valves and gas detection sensors at the wall entry shall remain and shall be tested and certified by outside new system installation.
2.3 Contractors shall submit tender quotation for the outside work only.
End of Addendum
Durham College Whitby Campus SECTION 20 07 00 Welding Shop Gas Piping WELDING GAS PIPING SYSTEM
20 07 00-WELDING GAS PIPING SYSTEM Page 1 of 9
1. GENERAL
1.1 STANDARDS
.1 Provide welding gas installations compliant with CAN/CSA-W117.2-12 – “Safety in welding, cutting, and allied processes” and generally as described in NFPA 51 Standard for the Design and Installation of Oxygen–Fuel Gas Systems for Welding, Cutting, and Allied Processes.
1.2 SUBMITTALS
.1 Shop Drawings: Submit shop drawings for all products specified in Part 2 of this Section except for the pipe and fittings.
.2 Test Data: Submit piping system leakage test sheets as specified.
2. PRODUCTS AND EXECUTION
2.1 PIPE, FITTINGS AND JOINTS
.1 Piping and fittings shall comply with ASME B31.3, Process Piping shall be at least Schedule 40,and fittings shall be at least standard weight in sizes up to and including 6 in. nominal, except as otherwise described hereunder. Materials for fabrication, installation, cleaning, and testing of piping systems shall be selected in accordance with sound engineering practice. Piping shall be steel or seamless copper, brass, or stainless steel tubing, except as provided hereunder.
.1 For Oxygen, Argon and Mixed Gases Piping Systems, use Schedule 40 pipe
for pressures not exceeding 1034Kpaand Schedule 80 for higher pressures. .2 For Acetylene Piping Systems, piping shall be steel. Unalloyed copper shall
not be used except in listed equipment. Except in cylinder manifolds, acetylene shall not be piped or utilized at a pressure in excess of 103 kPa (15 psi) gauge or 206 kPa (30 psi) absolute. This provision is not intended to apply to the storage of acetylene in cylinders manufactured to DOT specifications.
.3 For Oxygen, argon and Mixed Gas Piping Systems, hose connections and
hose complying with NFPA 51 shall be permitted to be used to connect the outlet of a manifold pressure regulator to piping, providing the working gauge pressure of the piping is 1.722 MPa (250 psi) or less and the length of the hose does not exceed 1.5 m (5 ft). Hose shall have a minimum bursting gauge pressure of 6.9 MPa (1000psi)
.2 Piping Joints shall be as follows:
.1 Joints in steel piping shall be welded, threaded, or flanged. Fittings, such as ells, tees, couplings, and unions, shall be permitted to be rolled, forged, or cast steel, malleable iron, or nodular iron. Gray or white cast iron fittings shall be prohibited.
Durham College Whitby Campus SECTION 20 07 00 Welding Shop Gas Piping WELDING GAS PIPING SYSTEM
20 07 00-WELDING GAS PIPING SYSTEM Page 2 of 9
.2 Joints in brass or copper pipe shall be welded, brazed, threaded, or flanged. If of the socket type, they shall be brazed with silver brazing alloy or similar high melting point filler metal.
.3 Joints in seamless copper, brass, or stainless steel tubing shall be listed or
approved gas tubing fittings, or the joints shall be brazed. If of the socket type, they shall be brazed with silverbrazing alloy or similar high melting point filler metal.
.4 Tapered threaded connections in oxygen pipe shall be tinned or made up with
‘Teflon’ (polytetrafluoroethylene) tape or other thread sealants suitable for oxygen service. Sealants shall be applied to the externally threaded portion only.
.3 Piping shall be run as directly as practical and protected against corrosion and physical damage, and allowance shall be made for expansion, contraction, jarring, and vibration.
.4 Piping under buildings or foundations shall be prohibited or provided with a vented casing or located in a well ventilated tunnel. Oxygen piping shall be permitted to be placed in the same tunnel, trench, or duct with fuel gas pipelines, provided there is good natural or mechanical ventilation and there is no contact with oil.
.5 Low points in piping and equipment where moisture can collect, shall be drained into drip post constructed so as to permit pumping or draining out the condensate at necessary intervals. Drain valves having outlets normally closed with screw caps or plugs shall be installed for this purpose. Open end valves or petcocks shall not be used, except that in drips located outdoors and underground and not readily accessible, valves shall be permitted to be used at outlets if they are equipped with means to secure them in the closed position. Pipes leading to the surface of the ground shall be cased or jacketed where necessary to prevent loosening or breaking.
.6 Readily accessible gas valves shall be provided to shut off the gas supply to buildings in cases of emergency. A shutoff valve shall be installed in the discharge from the gas holder, manifold, or other source of supply.
.7 Cleaning:
.1 Fittings and lengths of pipe shall be examined internally before assembly and, if necessary, freed of scale or dirt. Oxygen piping and fittings shall be washed out with a solution that will remove grease and dirt but that will not react with oxygen.
.2 Piping shall be thoroughly blown out after assembly to remove foreign
materials. For oxygen piping, oil free air or oil free nitrogen shall be used. For other piping, air or inert gas shall be permitted to be used.
.8 Protective Equipment, Hose, and Regulators shall be installed only for the service for which it is intended and as recommended by the manufacturer.
Durham College Whitby Campus SECTION 20 07 00 Welding Shop Gas Piping WELDING GAS PIPING SYSTEM
20 07 00-WELDING GAS PIPING SYSTEM Page 3 of 9
.9 Pressure Relief for Piping Systems shall be of Listed or approved type and shall be installed in fuel gas, oxygen and mixed gas piping if the maximum design pressure of the piping or the system components can be exceeded. These devices shall be set to discharge at not more than the maximum design pressure of the piping or system components and to a safe location. Pressure relief devices in pressure regulators in the system shall not be used to fulfill this provision.
.10 Listed or approved protective equipment shall be installed in the fuel gas piping. be located in the main supply line, or at the head of each branch line, or at each location where fuel gas is withdrawn. In all cases, fuel gas serving an oxygen–fuel gas device shall flow through a protective device. Backflow protection of the fuel gas supply also shall be provided at the station outlet by a listed or approved device that will prevent oxygen from flowing into the fuel gas system.
.11 The pressure relief device shall be located on the downstream side of the backflow and flashback protection devices. The vent from the pressure relief device shall be at least as large as the relief device outlet and shall be installed without low points that can collect moisture. I flow points are unavoidable, drip pots with drains closed with screw plugs or caps shall be installed at the low points. The vent terminus shall not endanger personnel or property through gas discharge, shall be located away from ignition sources, shall terminate in a hood or bend, and shall discharge outdoors at a safe location. Vent pipes shall be galvanized steel.
.12 Supply and install relief valves on each AC, O, AR, MIG, main piping at high level and pipe to outside through wall to release pressure outdoor. (Match existing relief location).
.13 If pipeline protective equipment incorporates a liquid, the liquid level shall be maintained, and an antifreeze shall be permitted to be used to prevent freezing. Fuel gas for use with equipment not requiring oxygen shall be withdrawn upstream of the piping protective devices.
.14 Testing:
.1 Piping systems shall be tested and proved gastight and leak free in accordance with ASMEB31.3, Process Piping at minimum 100psi or 150% of the operating pressure whichever is greater.
.2 Where combustible gas lines or other parts of equipment are being purged of
air or gas, sources of ignition shall not be permitted near uncapped openings.
.15 Painting, Signs and Labels:
.1 Underground pipe and tubing and outdoor ferrous pipe and tubing shall be covered or painted with a material for protection against corrosion.
.2 Station outlets shall be marked to indicate the name of the gas in the
connected pipe. .3 Signs clearly establishing the location and identity of section shutoff valves
shall be provided.
Durham College Whitby Campus SECTION 20 07 00 Welding Shop Gas Piping WELDING GAS PIPING SYSTEM
20 07 00-WELDING GAS PIPING SYSTEM Page 4 of 9
.4 Labels assist in identifying materials conveyed in gas piping systems shall comply with ANSI Bulletin A13.1 and local codes.
.5 Paint all exposed piping to outdoor with water proof external application paint.
2.2 WELDING GAS HIGH PRESSURE CYLINDER MANUAL MANIFOLD SYSTEM
.1 Provide a shutoff valve on either side of the cylinder banks to switch over cylinder banks manually.
.2 The following Safety Standards and Codes shall be applicable:
.1 Compressed Gas Association (Pamphlets V-1, E-1, G-1) .2 American National Standards Institute (Pamphlets B-57-1) .3 National Fire Protection Association (Pamphlets NFPA-51) .4 UL listed component regulators and valves
.3 The Unit shall be frame mounted with removable cover for easy access to internal components and include all line, supply, reserve and intermediate pressure gauges, changeover valves and solenoid valves compatible with the gas service. Powder coated steel mounting frame and with durable ABS plastic cover. Cover draw latch shall be lockable for security. Wall or stand mount as required by site conditions.
.4 ½” NPT (F) outlet connection. Inlet size: 1-11½” NPS (M)
.5 Adjustable delivery pressure –– 0-200 PSIG for Oxygen, Inert, CO2. Maximum Inlet – 3000 PSIG Maximum Temperature - 140°F Minimum Temperature - 0°F High flow capacity –– 3500 SCFH air @ 70°F, –– Flow coefficient Cv = 0.238.
.6 The manifold shall have a two-year warranty, while the switchover mechanism shall have a five year warranty.
.7 Gas Pipeline heaters. Provide 1000W heaters unless otherwise specified, suitable for the gas service.
.8 Acceptable products are:
.1 The Victor VM2000 Series .2 Rexarc Electronic Series
2.3 HYDRALIC FLASH ARRESTORS
.1 Provide on manifolds with two or more Acetylene Gas Cylinders and where indicated, hydraulic Flash back arrestors. These systems are designed to provide protection via the use of ethylene-glycol in the unit. Each unit shall have a pressure relief valve which provides additional protection to the system in the event of over-pressurization. Hydraulic Arrestors shall be FM approved.
Durham College Whitby Campus SECTION 20 07 00 Welding Shop Gas Piping WELDING GAS PIPING SYSTEM
20 07 00-WELDING GAS PIPING SYSTEM Page 5 of 9
.2 Acceptable products are:
.1 Victor or equal approved. Maximum flow is 1000 SCFH for the FB-2A and 300 SCFH for theFB-1A
2.4 PIPELINE – STATION OUTLET AND REGULATOR SET
.1 For each weld station and as indicated, provide station regulators fitted with the appropriate station style CGA connections for use with oxygen, inert or fuel gases.
.2 Station Outlet Protective Equipment: A listed or approved shutoff valve shall be installed at each outlet and located on the upstream side of other station outlet equipment. A listed or approved backflow check valve shall be installed at each station outlet. When a P F device is located at the station outlet, an additional check valve is not required in the fuel gas line. If the station outlet is equipped with a detachable regulator, the outlet shall terminate in a union connection that complies with CGA E3.
.3 If the station outlet is connected directly to a hose, the outlet shall terminate in a union connection complying with CGA E1, Standard Connections for Regulator Outlets, Torches, and Fitted Hose for Welding and Cutting Equipment. Station outlets shall be permitted to terminate in pipe threads to which permanent connections are to be made, such as to a machine.
.4 Station outlets shall be equipped with a detachable outlet dust cap that shall be secured in place except when a hose, a regulator, or piping is attached.
.5 Hose and hose connections for oxygen and fuel gas service, including hose used to connect portable outlet headers to piping systems, shall comply with CGA E1.
.6 Pressure Regulators shall be used only for the gas for which they are intended. The regulator shall have 4 port forged brass body with high strength zinc-aluminum housing cap, all to meet or exceed CGA E-4 ETL and listed to UL 252. The regulator shall have color coded, impact absorbing, adjusting knob and safety knob and 2.5” gauge with relevant artwork. Provide side entry or rear entry inlet versions as required and with overall sizes to suit space limitations.
.7 Maximum inlet pressure of 200 PSIG.
.8 Acceptable Products are:
.1 Victor, EDGE EST4, or equal and approved.
2.5 PIPELINE – HIGH PRESSURE HEADER AND EXTENSIONS
.1 All Manifolds shall be expandable to meet changing application requirements.
.2 Construction shall be factory-fabricated and tested brazed brass for maximum leak protection rated for 3000 PSIG and end-capped and with right or left side expansions to accommodate future expansion needs.
.3 Manifolds shall have 1” x 11½” NPS Connections.
Durham College Whitby Campus SECTION 20 07 00 Welding Shop Gas Piping WELDING GAS PIPING SYSTEM
20 07 00-WELDING GAS PIPING SYSTEM Page 6 of 9
.4 High-pressure Pigtails shall be of high purity brass or stainless models and shall be complete with Check valves and as follows:
.1 24 inch flexible
.2 Acetylene models equipped with dry flash arrestors
.5 Provide at least two spare hose connections on each header for future capacity increase of each gas and liquid system.
.6 Acceptable products are:
.1 Victor extensions Model HER and HEL .2 Rexarc
2.6 FLASH ARRESTORS AND CHECK VALVE
.1 Supply and install CONCOA Model EN730 1 15/Fuel gas to 50 PSIG on supply pipe line of acetylene for all existing and new pipelines.
2.7 FLASH ARRESTORS AND CHECK VALVE
.1 Supply and install CONCOA Model EN730 1 15/Fuel gas to 50 PSIG on supply pipe line of acetylene for all existing and new pipelines.
2.8 GAS FLOWMETERS
.1 Provide Flowmeters for precision, gas-flow measuring. Instruments shall be designed for use in laboratories and specific MIG/TIG welding applications. Flowtubes and outer covers shall be of impact-resistant Lexan for maximum durability and service life.
.2 Acceptable products are: .1 Victor extensions Model HER and HEL .2 Rexarc
2.9 GAS BALL VALVES
.1 Provide CSA/TSSA approved ball type or lubricated plug type shut-off valves to isolate equipment, and wherever else shown. Provide unibody bronze ball valves, rated 300 W.O.G., plated brass ball with Teflon seats, reinforced stem packing and ball thrust washer with adjustable stem packing gland.
.2 Ensure that valves are located for easy accessibility and maintenance.
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2.10 GAS CHECK VALVES
.1 Gas check valves shall have armored and rounded inner valve which is cleanable and easily replaceable and suitable for the particular gas service.
2.11 GAS DETECTION CONTROLLER
.1 Provide comprehensive monitoring of flammable, toxic and oxygen gas hazards in potentially explosive atmospheres with adjustable detector operation LCD and magnet switches and non-intrusive operation. System shall be compliant with UL, INMETRO, ATEX, IECEx, CSA, KTL, PA,GB and CCCF standards.
.2 Controller to accept up to 16 inputs from numerous sensor types; Inputs may be analog or Modbus allowing data retrieval via RS-485 with 8 channel display mode and option boards. A graphic LCD displays monitored data as trends, bar graphs and engineering units. Three adjustable alarm levels are provided per channel with alarm relays for HORN, HIGH, WARN & FAULT.
.3 Panel shall be IP66 and NEMA 4X, Explosion-Proof, surface mount, and rack mount packaging. A steady green backlight to indicate normal operation, flashing yellow to indicate fault and flashing red to indicate an alarm.
.4 Sensors shall be catalytic or infrared, toxic and oxygen versions electrochemical sensors Poison immune infrared sensors Poison resistant catalytic bead sensors Long life sensors.
.5 Acceptable products are:
.1 Honeywell Analytics HA-71 or equal and approved.
2.12 GAS DETECTION SENSORS
.1 Provide Gas detection sensors as indicated on the drawings and in accordance with the location hazard classification. The scale, range, relay operation, alarm set point and electronic tag number of the detector shall be adjustable using the transmitter's LCD and non-intrusive magnetic switches. Provide remote sensor mounting kit and duct mounting kit.
.2 Sensors shall be long-life type, catalytic or infrared, flammable gas and oxygen versions with, as appropriate, electrochemical sensors, poison immune infrared sensors and catalytic bead sensors.
.3 Acceptable products are:
.1 Honeywell Analytics – The Sensepoint XCD range (for Acetylene Plantroom) .2 Honeywell Optima Plus or equal for flammable gas sensors.
2.13 GAS CYLINDERS
.1 Provide fully-filled Gas Cylinders, for each gas, in the size and capacities indicated to allow complete testing and commissioning of the installations and for client
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training procedures. At the works handover stage arrange with the client’s specified cylinder rental company to provide and install all gas cylinders as shown on the drawings and as specified and scheduled, fully-filled. Include all costs associated with this provision of gas cylinders.
.2 Praxair is the current gas cylinder supplier to the Whitby Campus.
2.14 CYLINDER SUPPORT AND BASE
.1 Supply and install chain and hook arrangement for each cylinder to be tied safely to the wall during storage/spare, empty and in use condition. Chain and hook shall be galvanized steel suited for cylinder weight, height and circumference.
.2 Supply 18” wide and length to suit cylinder bank/manifold length bolted to the floor to install cylinders in place. Same arrangement shall be provided for spares and empty cylinders for safe keeping and handling.
2.15 IDENTIFICATION
.1 Provide gas pipe ID tags/name tapes at every 5 meter distance on either side of wall and ceiling penetration and at point of use pipes.
.2 Tags/tapes shall be clearly visible from floor level.
.3 ID piping and valves in gas cylinder room to indicate shop 1/2 and shop 3 gas manifold header and mains and shutoff valves.
2.16 SEALING AND FIRE PROOFING
.1 Seal all wall opening for a water tight installation on exterior walls of gas cylinder room and weld shop areas at all pipe penetrations.
.2 Fire proof openings between adjoining rated spaces.
2.17 GENERAL WORK
.1 Remove all gas piping and accessories (Acetylene, Oxygen, Argon, Mixed Gas) from the outside gas cylinder chain link enclosure serving the Shop 1 and Shop 2 immediate to the west of the headers from cylinders to the outlets. Existing Shop 3 piping, valves and accessories to just inside the wall to remain. Remove cylinders and handover to the College.
.2 Upon completion of the outside closed gas cylinder room, install all piping, headers, manifolds and connect one group of AC, Ox, Ar and mixed gases piping to existing Shop 3 piping headers at the valves just inside the shop area from piping run over the pipe bridge to inside. Second group of headers shall be installed from cylinders to shop 1 & 2 over the pipe bridge with isolation valves inside the shop area and all new piping installed to all existing welding booths and cutting stations as per plans and details shown on the drawings.
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.3 Install isolation valves, headers, manifolds, spark arresters, relief valves at the manifolds/cylinders and at high level main piping to Shop 1 & Shop 2 and pipe to outside to match existing vent piping from mains for Shop 3.
.4 Test all piping for leaks, commission from cylinders to the outlets on each bench.
END OF SECTION
SHARMA & PARTNERS INC. I 85 Curlew Drive, Unit 108 Toronto, ON M3A 2P8 | t: 416-291-8822
SHARMA & PARTNERS INC. Mechanical Addendum
Client Durham College, 1930 Simcoe road N, Oshawa Project: Welding Shop Piping, Whitby.
Mechanical Addendum Issue Date: Project Number:
MA-1 October 29, 2018 2018-1044
The following items are changes to the tender contract documents for this project. Contractor shall include the cost of these addendum items in the tender quotation. All material and workmanship are to be described in the contract documents unless otherwise stated. Contractor shall identify addendum numbers included in the tender quotation when submitting tender / bid form.
1.0 DRAWINGS & SPECIFICATIONS( Spec Section 20 07 00 Piping system reissued):
1.1 Section 20 07 00 Welding shop Piping system issued with the tender package contains information
requested during the site visit. This section includes types of piping, valves, fittings, joints, cylinders, manifolds, flash arresters, regulators, check valves, detection systems, accessories etc. to be used in the project. All products used shall be code compliant as noted and TSSA approved prior to installation.
2.0 STAGING OF SCOPE OF WORK:
2.1 Durham College has decided to complete ONLY THE OUTSIDE SCOPE OF WORK including the
Gas Cylinders, headers, distribution and new piping connections to existing pipe penetrations serving the existing Phase 2 weld Shop areas.
2.2 Existing Piping through the wall and all interior piping distribution installation shall be in Stage 2 scope
and NOT INCLUDED IN THIS TENDER PACKAGE. Interior shut off valves and gas detection sensors at the wall entry shall remain and shall be tested and certified by outside new system installation.
2.3 Contractors shall submit tender quotation for the outside work only.
End of Addendum
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1. GENERAL
1.1 STANDARDS
.1 Provide welding gas installations compliant with CAN/CSA-W117.2-12 – “Safety in welding, cutting, and allied processes” and generally as described in NFPA 51 Standard for the Design and Installation of Oxygen–Fuel Gas Systems for Welding, Cutting, and Allied Processes.
1.2 SUBMITTALS
.1 Shop Drawings: Submit shop drawings for all products specified in Part 2 of this Section except for the pipe and fittings.
.2 Test Data: Submit piping system leakage test sheets as specified.
2. PRODUCTS AND EXECUTION
2.1 PIPE, FITTINGS AND JOINTS
.1 Piping and fittings shall comply with ASME B31.3, Process Piping shall be at least Schedule 40,and fittings shall be at least standard weight in sizes up to and including 6 in. nominal, except as otherwise described hereunder. Materials for fabrication, installation, cleaning, and testing of piping systems shall be selected in accordance with sound engineering practice. Piping shall be steel or seamless copper, brass, or stainless steel tubing, except as provided hereunder.
.1 For Oxygen, Argon and Mixed Gases Piping Systems, use Schedule 40 pipe
for pressures not exceeding 1034Kpaand Schedule 80 for higher pressures. .2 For Acetylene Piping Systems, piping shall be steel. Unalloyed copper shall
not be used except in listed equipment. Except in cylinder manifolds, acetylene shall not be piped or utilized at a pressure in excess of 103 kPa (15 psi) gauge or 206 kPa (30 psi) absolute. This provision is not intended to apply to the storage of acetylene in cylinders manufactured to DOT specifications.
.3 For Oxygen, argon and Mixed Gas Piping Systems, hose connections and
hose complying with NFPA 51 shall be permitted to be used to connect the outlet of a manifold pressure regulator to piping, providing the working gauge pressure of the piping is 1.722 MPa (250 psi) or less and the length of the hose does not exceed 1.5 m (5 ft). Hose shall have a minimum bursting gauge pressure of 6.9 MPa (1000psi)
.2 Piping Joints shall be as follows:
.1 Joints in steel piping shall be welded, threaded, or flanged. Fittings, such as ells, tees, couplings, and unions, shall be permitted to be rolled, forged, or cast steel, malleable iron, or nodular iron. Gray or white cast iron fittings shall be prohibited.
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.2 Joints in brass or copper pipe shall be welded, brazed, threaded, or flanged. If of the socket type, they shall be brazed with silver brazing alloy or similar high melting point filler metal.
.3 Joints in seamless copper, brass, or stainless steel tubing shall be listed or
approved gas tubing fittings, or the joints shall be brazed. If of the socket type, they shall be brazed with silverbrazing alloy or similar high melting point filler metal.
.4 Tapered threaded connections in oxygen pipe shall be tinned or made up with
‘Teflon’ (polytetrafluoroethylene) tape or other thread sealants suitable for oxygen service. Sealants shall be applied to the externally threaded portion only.
.3 Piping shall be run as directly as practical and protected against corrosion and physical damage, and allowance shall be made for expansion, contraction, jarring, and vibration.
.4 Piping under buildings or foundations shall be prohibited or provided with a vented casing or located in a well ventilated tunnel. Oxygen piping shall be permitted to be placed in the same tunnel, trench, or duct with fuel gas pipelines, provided there is good natural or mechanical ventilation and there is no contact with oil.
.5 Low points in piping and equipment where moisture can collect, shall be drained into drip post constructed so as to permit pumping or draining out the condensate at necessary intervals. Drain valves having outlets normally closed with screw caps or plugs shall be installed for this purpose. Open end valves or petcocks shall not be used, except that in drips located outdoors and underground and not readily accessible, valves shall be permitted to be used at outlets if they are equipped with means to secure them in the closed position. Pipes leading to the surface of the ground shall be cased or jacketed where necessary to prevent loosening or breaking.
.6 Readily accessible gas valves shall be provided to shut off the gas supply to buildings in cases of emergency. A shutoff valve shall be installed in the discharge from the gas holder, manifold, or other source of supply.
.7 Cleaning:
.1 Fittings and lengths of pipe shall be examined internally before assembly and, if necessary, freed of scale or dirt. Oxygen piping and fittings shall be washed out with a solution that will remove grease and dirt but that will not react with oxygen.
.2 Piping shall be thoroughly blown out after assembly to remove foreign
materials. For oxygen piping, oil free air or oil free nitrogen shall be used. For other piping, air or inert gas shall be permitted to be used.
.8 Protective Equipment, Hose, and Regulators shall be installed only for the service for which it is intended and as recommended by the manufacturer.
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.9 Pressure Relief for Piping Systems shall be of Listed or approved type and shall be installed in fuel gas, oxygen and mixed gas piping if the maximum design pressure of the piping or the system components can be exceeded. These devices shall be set to discharge at not more than the maximum design pressure of the piping or system components and to a safe location. Pressure relief devices in pressure regulators in the system shall not be used to fulfill this provision.
.10 Listed or approved protective equipment shall be installed in the fuel gas piping. be located in the main supply line, or at the head of each branch line, or at each location where fuel gas is withdrawn. In all cases, fuel gas serving an oxygen–fuel gas device shall flow through a protective device. Backflow protection of the fuel gas supply also shall be provided at the station outlet by a listed or approved device that will prevent oxygen from flowing into the fuel gas system.
.11 The pressure relief device shall be located on the downstream side of the backflow and flashback protection devices. The vent from the pressure relief device shall be at least as large as the relief device outlet and shall be installed without low points that can collect moisture. I flow points are unavoidable, drip pots with drains closed with screw plugs or caps shall be installed at the low points. The vent terminus shall not endanger personnel or property through gas discharge, shall be located away from ignition sources, shall terminate in a hood or bend, and shall discharge outdoors at a safe location. Vent pipes shall be galvanized steel.
.12 Supply and install relief valves on each AC, O, AR, MIG, main piping at high level and pipe to outside through wall to release pressure outdoor. (Match existing relief location).
.13 If pipeline protective equipment incorporates a liquid, the liquid level shall be maintained, and an antifreeze shall be permitted to be used to prevent freezing. Fuel gas for use with equipment not requiring oxygen shall be withdrawn upstream of the piping protective devices.
.14 Testing:
.1 Piping systems shall be tested and proved gastight and leak free in accordance with ASMEB31.3, Process Piping at minimum 100psi or 150% of the operating pressure whichever is greater.
.2 Where combustible gas lines or other parts of equipment are being purged of
air or gas, sources of ignition shall not be permitted near uncapped openings.
.15 Painting, Signs and Labels:
.1 Underground pipe and tubing and outdoor ferrous pipe and tubing shall be covered or painted with a material for protection against corrosion.
.2 Station outlets shall be marked to indicate the name of the gas in the
connected pipe. .3 Signs clearly establishing the location and identity of section shutoff valves
shall be provided.
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.4 Labels assist in identifying materials conveyed in gas piping systems shall comply with ANSI Bulletin A13.1 and local codes.
.5 Paint all exposed piping to outdoor with water proof external application paint.
2.2 WELDING GAS HIGH PRESSURE CYLINDER MANUAL MANIFOLD SYSTEM
.1 Provide a shutoff valve on either side of the cylinder banks to switch over cylinder banks manually.
.2 The following Safety Standards and Codes shall be applicable:
.1 Compressed Gas Association (Pamphlets V-1, E-1, G-1) .2 American National Standards Institute (Pamphlets B-57-1) .3 National Fire Protection Association (Pamphlets NFPA-51) .4 UL listed component regulators and valves
.3 The Unit shall be frame mounted with removable cover for easy access to internal components and include all line, supply, reserve and intermediate pressure gauges, changeover valves and solenoid valves compatible with the gas service. Powder coated steel mounting frame and with durable ABS plastic cover. Cover draw latch shall be lockable for security. Wall or stand mount as required by site conditions.
.4 ½” NPT (F) outlet connection. Inlet size: 1-11½” NPS (M)
.5 Adjustable delivery pressure –– 0-200 PSIG for Oxygen, Inert, CO2. Maximum Inlet – 3000 PSIG Maximum Temperature - 140°F Minimum Temperature - 0°F High flow capacity –– 3500 SCFH air @ 70°F, –– Flow coefficient Cv = 0.238.
.6 The manifold shall have a two-year warranty, while the switchover mechanism shall have a five year warranty.
.7 Gas Pipeline heaters. Provide 1000W heaters unless otherwise specified, suitable for the gas service.
.8 Acceptable products are:
.1 The Victor VM2000 Series .2 Rexarc Electronic Series
2.3 HYDRALIC FLASH ARRESTORS
.1 Provide on manifolds with two or more Acetylene Gas Cylinders and where indicated, hydraulic Flash back arrestors. These systems are designed to provide protection via the use of ethylene-glycol in the unit. Each unit shall have a pressure relief valve which provides additional protection to the system in the event of over-pressurization. Hydraulic Arrestors shall be FM approved.
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.2 Acceptable products are:
.1 Victor or equal approved. Maximum flow is 1000 SCFH for the FB-2A and 300 SCFH for theFB-1A
2.4 PIPELINE – STATION OUTLET AND REGULATOR SET
.1 For each weld station and as indicated, provide station regulators fitted with the appropriate station style CGA connections for use with oxygen, inert or fuel gases.
.2 Station Outlet Protective Equipment: A listed or approved shutoff valve shall be installed at each outlet and located on the upstream side of other station outlet equipment. A listed or approved backflow check valve shall be installed at each station outlet. When a P F device is located at the station outlet, an additional check valve is not required in the fuel gas line. If the station outlet is equipped with a detachable regulator, the outlet shall terminate in a union connection that complies with CGA E3.
.3 If the station outlet is connected directly to a hose, the outlet shall terminate in a union connection complying with CGA E1, Standard Connections for Regulator Outlets, Torches, and Fitted Hose for Welding and Cutting Equipment. Station outlets shall be permitted to terminate in pipe threads to which permanent connections are to be made, such as to a machine.
.4 Station outlets shall be equipped with a detachable outlet dust cap that shall be secured in place except when a hose, a regulator, or piping is attached.
.5 Hose and hose connections for oxygen and fuel gas service, including hose used to connect portable outlet headers to piping systems, shall comply with CGA E1.
.6 Pressure Regulators shall be used only for the gas for which they are intended. The regulator shall have 4 port forged brass body with high strength zinc-aluminum housing cap, all to meet or exceed CGA E-4 ETL and listed to UL 252. The regulator shall have color coded, impact absorbing, adjusting knob and safety knob and 2.5” gauge with relevant artwork. Provide side entry or rear entry inlet versions as required and with overall sizes to suit space limitations.
.7 Maximum inlet pressure of 200 PSIG.
.8 Acceptable Products are:
.1 Victor, EDGE EST4, or equal and approved.
2.5 PIPELINE – HIGH PRESSURE HEADER AND EXTENSIONS
.1 All Manifolds shall be expandable to meet changing application requirements.
.2 Construction shall be factory-fabricated and tested brazed brass for maximum leak protection rated for 3000 PSIG and end-capped and with right or left side expansions to accommodate future expansion needs.
.3 Manifolds shall have 1” x 11½” NPS Connections.
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.4 High-pressure Pigtails shall be of high purity brass or stainless models and shall be complete with Check valves and as follows:
.1 24 inch flexible
.2 Acetylene models equipped with dry flash arrestors
.5 Provide at least two spare hose connections on each header for future capacity increase of each gas and liquid system.
.6 Acceptable products are:
.1 Victor extensions Model HER and HEL .2 Rexarc
2.6 FLASH ARRESTORS AND CHECK VALVE
.1 Supply and install CONCOA Model EN730 1 15/Fuel gas to 50 PSIG on supply pipe line of acetylene for all existing and new pipelines.
2.7 FLASH ARRESTORS AND CHECK VALVE
.1 Supply and install CONCOA Model EN730 1 15/Fuel gas to 50 PSIG on supply pipe line of acetylene for all existing and new pipelines.
2.8 GAS FLOWMETERS
.1 Provide Flowmeters for precision, gas-flow measuring. Instruments shall be designed for use in laboratories and specific MIG/TIG welding applications. Flowtubes and outer covers shall be of impact-resistant Lexan for maximum durability and service life.
.2 Acceptable products are: .1 Victor extensions Model HER and HEL .2 Rexarc
2.9 GAS BALL VALVES
.1 Provide CSA/TSSA approved ball type or lubricated plug type shut-off valves to isolate equipment, and wherever else shown. Provide unibody bronze ball valves, rated 300 W.O.G., plated brass ball with Teflon seats, reinforced stem packing and ball thrust washer with adjustable stem packing gland.
.2 Ensure that valves are located for easy accessibility and maintenance.
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2.10 GAS CHECK VALVES
.1 Gas check valves shall have armored and rounded inner valve which is cleanable and easily replaceable and suitable for the particular gas service.
2.11 GAS DETECTION CONTROLLER
.1 Provide comprehensive monitoring of flammable, toxic and oxygen gas hazards in potentially explosive atmospheres with adjustable detector operation LCD and magnet switches and non-intrusive operation. System shall be compliant with UL, INMETRO, ATEX, IECEx, CSA, KTL, PA,GB and CCCF standards.
.2 Controller to accept up to 16 inputs from numerous sensor types; Inputs may be analog or Modbus allowing data retrieval via RS-485 with 8 channel display mode and option boards. A graphic LCD displays monitored data as trends, bar graphs and engineering units. Three adjustable alarm levels are provided per channel with alarm relays for HORN, HIGH, WARN & FAULT.
.3 Panel shall be IP66 and NEMA 4X, Explosion-Proof, surface mount, and rack mount packaging. A steady green backlight to indicate normal operation, flashing yellow to indicate fault and flashing red to indicate an alarm.
.4 Sensors shall be catalytic or infrared, toxic and oxygen versions electrochemical sensors Poison immune infrared sensors Poison resistant catalytic bead sensors Long life sensors.
.5 Acceptable products are:
.1 Honeywell Analytics HA-71 or equal and approved.
2.12 GAS DETECTION SENSORS
.1 Provide Gas detection sensors as indicated on the drawings and in accordance with the location hazard classification. The scale, range, relay operation, alarm set point and electronic tag number of the detector shall be adjustable using the transmitter's LCD and non-intrusive magnetic switches. Provide remote sensor mounting kit and duct mounting kit.
.2 Sensors shall be long-life type, catalytic or infrared, flammable gas and oxygen versions with, as appropriate, electrochemical sensors, poison immune infrared sensors and catalytic bead sensors.
.3 Acceptable products are:
.1 Honeywell Analytics – The Sensepoint XCD range (for Acetylene Plantroom) .2 Honeywell Optima Plus or equal for flammable gas sensors.
2.13 GAS CYLINDERS
.1 Provide fully-filled Gas Cylinders, for each gas, in the size and capacities indicated to allow complete testing and commissioning of the installations and for client
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training procedures. At the works handover stage arrange with the client’s specified cylinder rental company to provide and install all gas cylinders as shown on the drawings and as specified and scheduled, fully-filled. Include all costs associated with this provision of gas cylinders.
.2 Praxair is the current gas cylinder supplier to the Whitby Campus.
2.14 CYLINDER SUPPORT AND BASE
.1 Supply and install chain and hook arrangement for each cylinder to be tied safely to the wall during storage/spare, empty and in use condition. Chain and hook shall be galvanized steel suited for cylinder weight, height and circumference.
.2 Supply 18” wide and length to suit cylinder bank/manifold length bolted to the floor to install cylinders in place. Same arrangement shall be provided for spares and empty cylinders for safe keeping and handling.
2.15 IDENTIFICATION
.1 Provide gas pipe ID tags/name tapes at every 5 meter distance on either side of wall and ceiling penetration and at point of use pipes.
.2 Tags/tapes shall be clearly visible from floor level.
.3 ID piping and valves in gas cylinder room to indicate shop 1/2 and shop 3 gas manifold header and mains and shutoff valves.
2.16 SEALING AND FIRE PROOFING
.1 Seal all wall opening for a water tight installation on exterior walls of gas cylinder room and weld shop areas at all pipe penetrations.
.2 Fire proof openings between adjoining rated spaces.
2.17 GENERAL WORK
.1 Remove all gas piping and accessories (Acetylene, Oxygen, Argon, Mixed Gas) from the outside gas cylinder chain link enclosure serving the Shop 1 and Shop 2 immediate to the west of the headers from cylinders to the outlets. Existing Shop 3 piping, valves and accessories to just inside the wall to remain. Remove cylinders and handover to the College.
.2 Upon completion of the outside closed gas cylinder room, install all piping, headers, manifolds and connect one group of AC, Ox, Ar and mixed gases piping to existing Shop 3 piping headers at the valves just inside the shop area from piping run over the pipe bridge to inside. Second group of headers shall be installed from cylinders to shop 1 & 2 over the pipe bridge with isolation valves inside the shop area and all new piping installed to all existing welding booths and cutting stations as per plans and details shown on the drawings.
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.3 Install isolation valves, headers, manifolds, spark arresters, relief valves at the manifolds/cylinders and at high level main piping to Shop 1 & Shop 2 and pipe to outside to match existing vent piping from mains for Shop 3.
.4 Test all piping for leaks, commission from cylinders to the outlets on each bench.
END OF SECTION