QUERIDO NIÑO DIOS
7.6. DESCRIPCÍON DE PERSONAJES
17.2.1 Required documents for VdS Schadenverhütung
Upon completion of the installation the installer shall issue an installation certificate and send it to VdS without being asked. The following documents shall be attached to the installation certificate:
− hydraulic calculation relevant for rating the water supply;
− drawing of reduced capacity tank/storage tank;
− power supply details;
− pressure test report (not required for extensions of less than 11 sprinklers);
− flushing test report (not required for extensions of less than 11 sprinklers);
− pump test report in accordance with 17.1.3;
− handover document to the operator;
− list of companies, institutions etc. responsible for maintaining the operational readiness in case of sprinkler systems installed in buildings occupied by several companies etc.;
− manufacturing document for the welding procedure of prefabricated pipes;
− for reduced capacity and storage tanks made of reinforced concrete:
− test report on the concrete quality;
− test report and reinforcement approval by a test engineer for structural design.
17.2.2 Required documents for the operator
a) Installation certificate stating that the system complies with all appropriate requirements of these rules, or giving details of any deviation from the requirements;
b) a complete set of operating instructions and "asbuilt" drawings including identification of all valves and instruments used for testing and operation and an operator’s programme for inspection and checking (see 18.3).
18 Maintenance of operational readiness
18.1 General
Sprinkler, water spray and foam extinguishing systems have a high success rate in extinguishing fires, also in hazards with high fire loads. To maintain operational readiness of these extinguishing systems, regular inspections and repairs shall be carried out. This clause specifies the minimum measures to be taken and the parties responsible for carrying them out. Given the diversity of system designs, however, it is impossible to specify the full range of control and repair measures.
The operator shall carry out regular inspections (see 18.3).
The operator shall appoint one responsible staff member (“sprinkler warden”) and one deputy to be in charge of servicing and controlling the extinguishing system. They shall see to it that the operating and maintenance instructions of the installer and any legal regulations are met.
After control and repair works the entire system shall be returned to the proper operational condition.
On all works carried out for maintaining the operational readiness the operator shall keep a log book to be kept on the premises (e.g. VdS 2212).
Note: The operator should notify all persons involved of the intent to carry out the a.m.
works and/or of the results.
Any modification or servicing of water extinguishing systems, such as inspections, maintenance works or repairs shall be carried out by installers who are VdS-approved for the respective type of system, have the system-specific spare parts and the required data.
Note: The VdS-approved installers for water extinguishing systems are listed in VdS 2490.
18.1.1 Replacement sprinklers
A stock of spare sprinklers shall be kept on the premises as replacements for operated or damaged sprinklers. Spare sprinklers, together with sprinkler spanners as supplied by the manufacturer, shall be housed in a cabinet or cabinets located in a prominent and easily accessible position where ambient temperature does not exceed 38°C.
The number of spare sprinklers shall be not less than:
a) 6 for LH installations;
b) 24 for OH installations;
c) 36 for HHP and HHS installations.
The stock shall be replenished promptly after spares are used.
Where installations contain high-temperature sprinklers, sidewall or other variations of sprinkler pattern or contain control valves, an adequate number of these spares shall also be maintained.
Old spare sprinklers no longer approved (e.g. those with a response sensitivity RTI > 200) shall be replaced by approved sprinklers or complemented by them not later than in the following cases:
− when sprinklers are installed in racks with PP/PE/PS materials or storage containers;
− when substantial extensions or modifications of installations are carried out.
18.1.1.1 Replacement of installed old sprinklers
Installed sprinklers operate under a variance permit, subject to the following exceptions:
− rack sprinklers in storages with PP/PE/PS materials or storage containers, where the sprinklers are no longer approved for the application; they shall be replaced by sprinklers approved for the relevant hazard;
− applications in which the performance of old sprinklers is doubtful (e.g. insufficient response sensitivity in low voids with increased fire load).
After considerable reconstruction or change of use in existing sprinkler systems the a.m.
variance permit does not apply.
Old sprinklers shall be replaced by new approved sprinklers not later than 50 years after installation.
18.1.2 Precautions and procedures when a system is not fully operational 18.1.2.1 Minimising the effects
Servicing, alterations and repairs of systems which are not fully operational shall be carried out such as to minimise the time and extent of non-operation.
When an installation is rendered inoperative the operator shall implement at least the following measures:
a) the fire authorities shall be informed if the alarm is connected to the fire brigade;
b) alterations and repairs to an installation or its water supply (except possibly a life safety installation, see Annex F) shall be carried out during normal working hours;
c) any hot work shall be subject to a permit system. Smoking and naked lights shall be prohibited in affected areas during the progress of the work;
d) when an installation remains inoperative outside working hours all fire doors and fire shutters shall remain closed;
e) fire extinguishing appliances shall be kept in readiness, with trained personnel available to handle them;
f) as much as possible of the installation shall be retained in an operative condition by cutting off pipework feeding the part or parts where work is taking place;
g) in the case of manufacturing premises, when the alterations or repairs are extensive, or it is necessary to disconnect a pipe exceeding 40 mm diameter,
h) any pump which is out of commission shall be isolated by means of the valves provided.
i) The staff responsible for monitoring the respective areas shall be informed and the areas shall be permanently inspected.
Note: Where possible, parts of the zones should be reinstated to provide some protection overnight by using blinders and blanks within the pipework; the blinders and blanks shall be fitted with visible indicator tags numbered and logged to ensure their removal after the works have been finished.
18.1.2.2 Planned shut-down
Only the operator shall give permission for a sprinkler group or zone to be shut down for any reason other than an emergency.
Before a system is wholly or partly shut down every part of the premises shall be checked to ensure that there is no indication of fire.
Where premises are subdivided into separate occupancies constituting buildings in communication or into risks protected by common sprinkler installations, all occupiers shall also be advised that the installation is to be turned off.
Particular attention shall be given to situations where installation pipework passes through walls or ceilings where these may feed sprinklers in areas needing special consideration.
18.1.2.3 Unplanned shut-down
When an installation is rendered inoperative as a matter of urgency or by accident, the precautions in 18.1.2.1 shall be observed as far as they are applicable with the least possible delay. The authorities shall also be notified as soon as is possible.