06_ELECTRICAL NARRATIVE.pdf

VA PROJECT NUMBER

VA CONTRACT NUMBER

VA TASK ORDER NUMBER

635-456

VA101F-17-D-2913

36C10F20N0048

PROJECT NAME Construct Surgical Intensive Care & Renovate Operating Rooms

ELECTRICAL SYSTEMS

SPECIAL & TECHNICAL REQUIRMENTS

Design Criteria

The following current codes and design criteria shall be utilized to the extent applicable.

The A/E should have personal copies of these documents for use during the project. The

A/E shall make the COR aware of any conflicts between these documents and VA

Handbooks, as applicable to this project, and obtain a decision on the acceptable design solution. The A/E is responsible to utilize any codes or design criteria, not listed below, that are considered appropriate in his professional judgment. If other codes or criteria are utilized, the A/E shall inform the COR of their use.

NFPA National Fire Codes, most specifically, NFPA 70 National Electric Code

NFPA 72 National Fire Alarm Code

NFPA 99 Health Care Facilities

NFPA 101 Life Safety Code

NFPA 241 Construction, Alteration and Demolition Operations

ICB International Building Code (for structural design criteria only)

BICSI-004 Information Communication Technology Systems Design

TIA-1179 Healthcare Facility Telecommunications Infrastructure Standard

VA design manuals

NORMAL POWER SYSTEM

The electrical service for the OKC VAMC was replaced recently with a 3000A, 480Y/277V, 3ph, 4W in 2019. The COR of OKC VAMC has confirmed existing electrical service and essential system has enough capacity to provide power for renovation and

VA TASK ORDER NUMBER

635-456

VA101F-17-D-2913

36C10F20N0048 addition of this project. Design engineers shall request for metering data (of the service) from the COR prior to commencement of the project. Table 1-1 shows the specifications of existing non-essential branch panels/transformers according to record drawings intended for the OR and SICU renovation and expansion project.

Table 1-1

Panel Branch Bus Amps, Voltage/

Transformer Rating

Spare Breaker/ Space

Capacity Comments

H8 (N) Normal 150A, 480Y/277V >50% spare avail.

H71 (E) Normal 150A, 480Y/277V <50% spare avail.

L8 (N) Normal 225A, 208Y/120V >50% spare avail.

L71 (E) Normal 125A, 208Y/120V <50% spare avail.

L72 (E) Normal 225A, 208Y/120V No spares avail.

(N)-New, (E)-Existing NA- not applicable.

EMERGENCY POWER SYSTEM

Two (2) 700kW emergency generators currently supplies emergency power to the OKC

VAMC. These generators are synchronized on a 3000A, 480Y/277V, 3ph, 4W existing paralleling switchgear which provides emergency power for the various healthcare branches at OKC VAMC. Existing Critical and Life Safety branches are served from ATS-

10,11 and, ATS-1,9 respectively. The Equipment branch system is served from ATS-7,8 and 12. A radiology branch is also available and is served from ATS-6. Record drawings show provision of (1) 480Y/277V, 3ph, 4W and (2) 208Y/120V, 3ph, 4W new critical branch and (1) 480Y/277V, 3ph, 4W Equipment panels to serve the 7th and 8th floor OR and SICU project. Table 1-2 shows the specifications of new and existing essential branch panels/transformers according to record drawings intended for the OR and SICU renovation and expansion project.

VA TASK ORDER NUMBER

635-456

VA101F-17-D-2913

36C10F20N0048

Table 1-2

Panel Branch Bus Amps, Voltage/

Transformer Rating

Spare Breaker/

Space Capacity Comments

H7E (N) Equipment 800A, 480Y/277V NA Panel sub feeds existing panels HPE

HPE (N) Equipment 400A, 480Y/277V No spares avail.

Spare capacity may be available if newly scheduled loads on record drawings not installed

LPE (N) Equipment 100A, 208Y/120V >50% spare avail.

H8LS (E) Life Safety 100A, 480Y/277V >50% spare avail. Panel sub feeds existing panel L8LS

H7LS (E) Life Safety 225A, 480Y/277V <50% spare avail.

L8LS (E) Life Safety 100A, 208Y/120V >50% spare avail.

LPLS (E) Life Safety 60A, 208Y/120V >50% spare avail.

L7LS (E) Life Safety 125A, 208Y/120V No spares avail.

7NS (E) Life Safety 80A, 208Y/120V No spares avail.

H73CR (N) Critical 400A, 480Y/277V NA Panel sub feeds existing panel H8CR

H8CR (N) Critical 125A, 480Y/277V >50% spare avail.

L8CR (N) Critical 225A, 208Y/120V >50% spare avail.

L73CR (N) Critical 225A, 208Y/120V NA

L7IT (N) Critical 125A, 208Y/120V NA

T73CR (N) Critical 75kVA, 480V-208Y/120V NA

(N)-New, (E)-Existing, NA- not applicable.

PROPOSED SYSTEM

General Design Criteria

The objective of this project is to complete the construction of the OR and SICU at OKC

VAMC which was started in 2013. Existing spaces in earlier designs may be modified as part of this project and will require design engineers to review existing drawings and current (time of design) conditions and update them according to new backgrounds.

VA TASK ORDER NUMBER

635-456

VA101F-17-D-2913

36C10F20N0048

Design engineers shall use existing and newly installed panelboards available on site.

Multiple renovation projects have been designed and constructed in the span of idle time after the original construction was halted. Existing equipment intended to be incorporated up or downstream of this scope of work have potentially been altered. Design engineer and contractor to verify available capacities for use and design intent before resuming construction. New electrical panels shall be provided if available panels do not have capacity to support new loads.

Normal power supply to the OR and SICU shall be provided from existing and/or newly installed panelboards as listed in Table 1-1. Design engineers shall review record electrical drawings of “Renovation & Expansion of the Operation Suite” and “OKC VA

Medical Center 8TH Floor SICU Addition” projects.

Life Safety, Critical and Equipment branch power shall be served from essential panelboards listed in Table 1-2. Two (2) ATS’s are staged on the seventh floor in the future waiting room area. They are believed to be the original replacements for 300A

480/277V ATS-11 and 600A 480/277V ATS-12. The original ATS’s have since been replaced as part of another renovation project and are 400A and 600A respectively. A

1200A 480/277V Switchboard is staged in the same location, the intention for which is yet undetermined. Since much electrical equipment has already been installed by the previous contractor on the 7th and 8th floors, the design-build team shall verify and make necessary modifications to comply with the following requirements:

1) The NEC Article 517 and NFPA 99 require a Type 1 Essential Power System consist of three separate branches (life safety, critical, and equipment). NEC

Article 517.31(C)(1) identifies the requirement for physical separation of overcurrent protection devices (OPCD) serving automatic transfer switches.

This section requires life safety, critical, and equipment branch OPCDs to be in separate vertical enclosures, which increases the physical size requirement of

VA TASK ORDER NUMBER

635-456

VA101F-17-D-2913

36C10F20N0048 the electrical distribution, meaning distribution that could fit in one switchboard section becomes three separate sections.

2) For MC facilities and LSP facilities with MC utilities/systems redundancies, resiliency requirements must support continued operations for a minimum of

96 hours during and following an extreme event. For critical care building that provides service to OR and SICU suites, 100% standby power is required.

3) The design-build team shall investigate to ensure that the electrical rooms on both the 7th and 8th (especially Room 833 appear to be a bit small) are adequately sized to accommodate all the panels and transformers to support the OR and SICU suits.

4) The design-build team shall evaluate the Isolated Power Supply (IPS) in the

OR suites to meet VA standards. The Normal power and Critical branch of the

EES shall each be on its IPS.

5) The design-build team shall verify that each OR suite receptacle is connected to an IPS on a dedicated circuit in a dedicated homerun conduit, except for those receptacles mounted in the surgical booms or service columns, which may be wired two to a circuit. Multiwire circuits are prohibited.

Rough-ins for isolation panelboards intended for ORs appear to have been installed.

Design engineers shall coordinate with COR to verify whether isolation panelboards are in facility storage prior to finalizing redesign of ORs.

VA TASK ORDER NUMBER

635-456

VA101F-17-D-2913

36C10F20N0048

Figure 3-1: Images of isolation panel rough-ins.

Provide lighting design according to new project backgrounds. Site investigations show rough-ins for lighting and controls provided according to record drawings. Some design modifications may be required. Design engineers shall coordinate with COR to use already procured exit light fixtures stored on site from previous design drawings only. All other lighting procured is fluorescent and does not meet VA design guidelines.

Figure-3-2: Images of Light fixture and other electrical device packages procured and stored on site.

For all other electrical devices already procured but are NOT in compliance with current

VA design guidelines and building codes, design engineers shall submit a letter of

VA TASK ORDER NUMBER

635-456

VA101F-17-D-2913

36C10F20N0048 approval or exception for their use.

FIRE ALARM SYSTEM

OR Renovation & SICU Addition

The existing fire alarm system appears to have the capacity for future expansion. Alarm initiating devices in new and renovated areas shall include addressable manual pull stations at all exits, true alarm type smoke detectors, true alarm type heat detectors in all hazardous areas not suitable for smoke detectors, true alarm type duct smoke detectors on supply and return of all new air-handling units, and addressable interface with all new or existing sprinkler flow/tamper switches (furnished under Division 23). Also provide magnetic door holders at doors located in smoke barrier walls, which release upon alarm.

Alarm notification appliances shall be combination electronic speaker/strobes as required to meet NFPA 72 requirements. Strobes must also meet ADA requirements. New fire alarm system shall be compliant with the VA Fire Protection Design Manual and NFPA

72.

NURSE CALL SYSTEM

OR Expansion & SICU Addition

A new nurse call system for the renovation and addition shall be provided by the VA preferred vendor and tied to the existing code blue system. All patient nurse call to annunciate to new dome lights outside the patient room and tie into a new nurse call master station located at the nurse station. Additional visual signals shall be installed at corridor intersections for all nurse call systems. Staff stations, duty stations, and miscellaneous nurse call devices shall be provided in support spaces/storage rooms as required. Low voltage contractor shall provide nurse call cables according to owner’s vendor drawings. Owner’s vendor shall terminate, test and label all devices per manufacturer’s instructions.

PAGING SYSTEMS

VA TASK ORDER NUMBER

635-456

VA101F-17-D-2913

36C10F20N0048

OR Expansion & SICU Addition

New system shall be provided to meet the needs of the renovation and addition. The paging system shall meet AHJ code requirements and standard VA guidelines. Paging speakers will be located at 24’ spacing throughout all corridors, waiting rooms, lobbies, nurse stations, and staff lounges. Staff lounge to be provided with individual volume control.

STRUCTURED CABLING SYSTEM

OR Expansion & SICU Addition

Provide flush-mounted work area outlets in all office, work and staff spaces. Each outlet will consist of at least two voice and two data Category 6 communication jacks. Locations of personal computers and phone sets will be identified per the user group/coordination meetings pertinent to this project. Coordinate all owner-furnished systems drawings with the structured cable design. Provide cable pathways for all telecommunications systems cables for the addition and renovation. A cable tray and j-hook cable supports shall be installed in the major corridors to manage the cables in the areas of construction. J-hook cable supports shall be used in the individual offices and patient rooms where necessary or defined by code or the authority having jurisdiction. Provide a new communications room per existing record drawing to house necessary communications equipment serving the new floor(s). Equip the communications room with two 30-amp twistlock dedicated emergency circuits at 72" above finished floor, and three 20-amp duplex outlets for primary hospital signaling equipment. Provide painted fire-rated A/C plywood around the perimeter of the communications room to mount communications hardware to wall.

SECURITY SYSTEM

OR Expansion & SICU Addition

Access control devices shall be installed as required to meet the needs of the addition.

The OR and support spaces shall require controlled access. CCTV cameras shall be added to the existing system. All exterior doors and interior public hallways will be

VA TASK ORDER NUMBER

635-456

VA101F-17-D-2913

36C10F20N0048 monitored with cameras. Other CCTV monitored areas include communication room, medication rooms and hallways in the SICU. Low voltage contractor shall provide visual surveillance system cables according the telecommunications drawings. Terminate the visual surveillance cabling on a separate patch panel according to VA design specifications. Owner’s vendor shall furnish and install all visual surveillance cameras.

MATV/CATV SYSTEM

OR Expansion & SICU Addition

Low voltage contractor shall provide Master Antenna TV/Cable Antenna television

(CATV) cabling according to vendor drawings. The CATV System shall comply with VA design specifications. Owner's vendor shall supply all equipment to ensure adequate signal strength at each television location.

PATIENT MONITORING

OR Expansion & SICU Addition

Low voltage contractor shall provide patient monitoring/telemetry cables according to vendor drawings. Terminate the patient monitoring cables on a separate patch panel according to VA design specifications. Owner’s vendor shall furnish and install all active components and test and label all devices per manufacturer’s instructions.

GENERAL LIGHTING SYSTEM

OR Expansion & SICU Addition

Light levels shall be per the VA lighting design manual and Illuminating Engineering

Society (IES) guidelines. Directly over patient beds shall be a multifunction LED light fixture. The ambient portion of the fixture will be dimmable from the patient’s pillow speaker and the exam portion separately switched from the wall at the head of the bed.

General patient room lighting shall be from lensed LED can lights 4000°K color temperature. Patient room night lights with amber lamp color shall provide night illumination for the both the bathroom and the patient room. Patient bathroom lighting shall be a LED can light, a shower can light, and a wall mounted vanity light over the

VA TASK ORDER NUMBER

635-456

VA101F-17-D-2913

36C10F20N0048 mirror. Critical branch lighting shall be provided from the emergency system in all patient care, nursing and support spaces (electrical and telecommunication room). Life Safety branch lighting shall be provided from the emergency system in all egress paths as well as stairwells. Automatic lighting controls shall be provided in all non-patient care areas such as public restrooms, clean and soiled utilities, storage rooms, offices, nourishment rooms, etc. Offices will be provided with multi-level lighting control occupancy sensors with vacancy operation requiring manual on control with automatic off control.

MISCELLANEOUS ELECTRICAL

OR Expansion & SICU Addition

Provide all required backboxes, conduit (minimum 3/4” from each device box to nearest accessible ceiling space) and sleeving as required by owner’s vendors for specialty/low-voltage systems. Such systems will include telephone systems, data processing systems, music/paging systems, intercom systems, nurse call systems, and television systems. No quad outlets shall be permitted. Only double duplex outlets will be used for locations where more electrical density is required. Provide power for all OFE (Owner furnished

Equipment) and architecturally specified equipment such as coffee makers, microwaves, refrigerators, proximity cabinets, tracker monitors, P.O.U. equipment, meds dispensers, TV's, etc. Provide 220V electrical outlets maximum of 50 feet apart in corridors for floor buffer equipment. Provide updated typewritten panelboard schedules at construction completion. All receptacles within 6' of a lavatory or sink shall be GFI. All electrical cover for outlets and light switches shall be stainless steel with engraved circuit numbers on its face to identify the panel circuit breaker number where it is connected. All conductors inside the electrical box shall be labeled identifying circuit numbers.