Germany - Electrical installation work

Description

In and on the existing property, modernization, conversion and expansion measures are being carried out on the cafeteria of the Leonberg hospital. A building permit has been issued for the work. The cafeteria is located south of the main entrance on a gently sloping orchard meadow. The construction site is accessed via an already prepared site road and parts of the existing fire brigade access road. The measures described here relate to the construction of the extension building and measures on the existing cafeteria at Leonberg Hospital.
Scope of tender KG 440 u. 450 The following services are tendered: a) b) Circuit distributor AV, SV electrical installation,c) Basic and safety lighting,d) e) f) Fire alarm system Cable/conductor lines,h) Transmission networks for data and telephony Fire protection ductsThe General Technical Terms of Contract for Construction Works, VOB Part C, are used as a basis. All services described in the LV shall be offered in a ready-to-operate version including all accessories. Not included in the tender are: a) b) Active components for data and telephony Construction power, lighting, c) Dismantling and dismantling work Low-voltage installation systems. 2 new circuit distributors are planned. The first one will be used to accommodate the final circuits which will be connected to the AV network, the second one for the final circuits of the SV network. The SV supply of safety-relevant consumers and other SV consumers must be set up separately. The structure of the individual distributions is shown in the appendices. Depending on the use, the supply is made from the NSHV Kern AV and NSHV Kern SV distributions of the Leonberg hospital. The supply is carried out via existing cable routes from the 2nd basement of the hospital via the 1st basement and from the storage area (south wing 1st basement) via the media channel to the technical room of the cafeteria building. The exact route of the existing cable runs is to be determined by the contractor. Necessary RCDs (DIN VDE 0100-410) are generally designed as type A. The residual current is 30 mA. Light and socket circuits are fused separately. The sub-distribution boards are equipped with power analysers to record the energy consumption. The meters are installed in a separate wall cabinet. Via a data logger, the recorded measured values can be transferred to the "Econ" management system available in the inventory. The following outlets will receive a separate current measurement: - Sub-distributor AV Sub-distributor SV RLT (SV) 2 x cooling (SV) Installation devices The usual dimensions 0.3 m and 1.1 m above FFB are selected as installation heights. For the office, the workstations were equipped according to an equipment list of the AG. Schuko sockets and RJ45 sockets are arranged in a sill duct below the outside window. All sockets (230 V, 400 V, RJ45) and fixed connections required for the kitchen and serving area were specified by IB-Beck. In consultation with the user further connections were provided. The planning of the installation devices in the rooms cooling and deep-freeze is not part of this planning, but is carried out by the kitchen planning department. The supply lines for installation are provided by Eproplan in accordance with IBBeck's specifications. IB-Beck will also provide an appropriate cable list for this purpose and an emergency call in accordance with DIN VDE 0834 is planned for the disabled WC. The emergency call will be displayed at the hospital gate. The control for the electric outside blinds is part of this planning. The motor control unit is to be integrated into the switch cabinet. A local control unit for overriding the automatic operation is planned for the individual rooms.Cable routing systems When routing the main cable routes and their dimensions, a distinction is made between - low voltage without functional integrity (AV) - low voltage with functional integrity (SV) - data communication, fire alarm systems In order to avoid EMC impairments with regard to the spatially separated routing in accordance with DIN VDE 0800-174-2, and 0100-710, a distinction is made between - low voltage without functional integrity (AV) - low voltage with functional integrity (SV) To the "island area" with cash desk and merchandise, the cable is routed under the floor in empty conduits (laid in the screed). An a. P. installation is carried out in the technical rooms. All other rooms are installed a.p. The inlets of the media duct into the building (main building and cafeteria) are to be sealed according to fire resistance class S90. The dimension for 0.4 kV cables is carried out under consideration of the - DIN VDE 0298-4 - DIN VDE 0100-520 (Supplement 2), 5.1: Maximum voltage drop behind the measuring device to the consumer installation: 3 %According to DIN VDE 0100-560, DIN VDE 0100-710 and MLAR 5.2.2, cables and lines for - safety lighting systems (up to the fire compartment in which the corresponding luminaires are installed) - fire alarm systems (except for lines laid in monitored rooms and ring lines with separately laid out outgoing and return lines) - systems for alerting the persons affected and issuing instructions for use in the event of fire - natural smoke extraction systems- mechanical smoke extraction systems in cases other than in MLAR 5.2.1Minimum in E 30 in accordance with DIN 4102-12:1998-11. Electrical systems for safety purposes are defined according to the basic standard DIN VDE 0100-560.5.2, -200, -300. In addition to the mains supply, they have an additional independent power source, their own distribution network with safe electrical protection measures (also in the event of fire), protected rooms for housing the power source and distributor, and end at the terminals of the end-/consumer devices to be supplied. The cabling also includes building automation. All wall and ceiling penetrations in F30...90 components are closed by the electrical trade in terms of fire protection with appropriate system solutions that can be verified: - Lighting of indoor workplaces in accordance with DIN EN 12464-1 - workplace regulations: ASR A 3.4: 03.2011 (has legal character) The lighting of the rooms for refrigerated, deep-frozen and cold drinks is not included in the scope of the tender. Here, the lighting installation (and the rest of the installation) is carried out by the kitchen manufacturer. The outside area is illuminated by downlights in the canopy and bollard lights. In addition, 2 compact spotlights are mounted under the canopy, which can also be switched by a motion detector (avoidance of nocturnal external use). In the guest rooms, scullery and kitchen, part of the lighting is supplied from the SV distribution system Safety lighting Safety lighting is planned in accordance with the following standards / guidelines: - National building law such as state building regulations LBO, building permits, fire protection reports - Occupational safety law ArbSchG (08/1996) - Workplace ordinance (08/2004) - Workplace regulations ASR A 3.4/3 - LAR Cable Systems Guideline (March 2007) - MVStättV Sample Assembly Area Ordinance (06/2005) - DIN EN 1838: 1999 Emergency lighting - VDE 0100-560: 2013-10 - DIN EN 50172 or E VDE 0108-100:2018-12 - VDE 0100-718: 2005-10 (Structural systems for gatherings of people) - DIN VDE 0100-710.560.9:2012-10The precise scope of emergency lighting is set out in the fire protection concept. Accordingly, the following rooms are provided with safety lighting: - guest rooms - serving area - vestibule - corridors - sink/kitchen - technical rooms Pictograms are provided in front of the emergency exits, with a further safety luminaire in each outdoor area. Single-battery luminaires are used, which are monitored by a controller. Lightning protection and earthing system External lightning protection system: An external lightning protection with lightning protection class II according to DIN VDE 0185-305-3 is planned for the building. Internal lightning protection system DIN VDE 0185-4, EN 61643-11, IEC 61643-1:1998, DIN VDE 0100-443:2002-01, VDE 0675-6-11, VdS 2833 apply to surge protection devices (ÜSE) used in electrical systems up to 1 kV AC. When building an external lightning protection system, internal lightning protection is mandatory for all distributions (UV) in accordance with DIN VDE 0185-4. Therefore, surge protection devices (ÜSE) are installed in the new electrical systems (UV) of the building in accordance with DIN VDE 0100-534. In a coordinated SPD system, SPDs connected in series must be energetically coordinated (DIN VDE 0185-305-4, C.3.4, DIN VDE 0100-534). For this reason, existing makes must continue to be used. In general, sockets for PC applications do not receive overvoltage protection according to overvoltage category II according to DIN VDE 0110 / IEC Publ. 664.Hazard detection and alarm systems According to DIN VDE 0833, the group of hazard detection systems includes fire alarm systems (BMA) and burglar alarm systems (EMA). The latter is not used. Fire alarm system: A fire alarm system is provided for the building. The detectors will be integrated into the existing BMA of the hospital (Bosch). According to the fire protection concept, full protection is required. Exceptions are WC rooms according to DIN VDE 0833-2, but not their anterooms. Furthermore, according to the fire protection concept, monitoring of the cold storage and deep-freeze rooms and the supply duct can be dispensed with. Heat detectors are used in the kitchen, sink area and in the anteroom of the cold rooms due to the expected disturbance variables. All other rooms (including the false ceiling) will be equipped with smoke detectors. The access from the main building and the new media channel can be used to separate the outward and return paths of the ring line. Transmission networks For the IT technology (information and telecommunication technology for voice and data), a universally usable, service-neutral, structured, standard-compliant network in accordance with EN 50173 will be created, which will be connected to the main distribution of the Leonberg Hospital via fibre optic cable. The supply is routed through the 1st floor of the main building via the storage area (south wing) and from there via the media channel into the cafeteria building. The exact route in the existing building is to be explored by the Contractor.

Opportunity closing date

20 July 2020

Value of contract

£1m-5m