(a) strong electric part
Question 1. dual power supply problem: "Civil Building Electrical Design Code" JGJ16-2008, Article 3.2.8, the first load dual power supply, whether or not the dual circuit end switching?
Processing Opinions: According to the "Building Design Fire Prevention Code" GB50016-2014 (2018 edition) in 10.1.8: fire control room, fire pump room, smoke and smoke exhaust fan room fire electrical equipment and fire elevator and other power supply, should be set up in the distribution line of the last level of the distribution box at the automatic switching device. (The last level of distribution box stipulated in this article: for the fire control room, fire pump room, smoke and smoke exhaust fan room of fire fighting equipment and fire elevator, etc., it is the last level of distribution box of the above fire fighting equipment or fire fighting equipment room; for the electricity of other fire fighting equipments, such as fire fighting emergency lighting and evacuation sign, etc., it is the distribution box of the fire protection division where these electric equipments are located). Construction drawings are not designed according to the above requirements, the review comments should be mentioned must be revised (violation of the strong article). For non-fire primary loads should be used for double-circuit end switching, construction drawings are not designed according to this requirement, the review comments can be proposed changes.
Question 2. public **** building and residential buildings need to achieve what design depth of the substation design?
Disposition: 1): Public **** building design drawings of the substation system should meet the design depth requirements.
2): Residential building variable power distribution system is appropriate to meet the requirements of the design depth provisions, such as the power supply department where the project is located requirements, you can simplify the design, the design depth should meet the following conditions:
a), must be provided with a dedicated distribution room of the distribution design drawings; b), the residential portion of the high and low-voltage distribution system should be provided with the high and low-voltage distribution system sketches and the arrangement of the substation room sketches and load circuit table.
Question 3. Are the waterproof thresholds of the fire control room, power distribution room, weak power equipment room of the district and the ventilation pipe leading to the outdoors installed in the oil storage room of the diesel generator room indicated in the electrical drawings?
Disposition: The waterproof threshold should be conditioned by the electrical profession to the architectural profession and implemented by the architectural profession. "Set up to the outdoor ventilation pipe" by the HVAC professional said, no HVAC professional by the electrical profession to add instructions.
Question 4: Is it possible to lay fire fighting distribution lines and non-fire fighting distribution lines in the same cable tray?
Opinion: Fire distribution lines and non-fire distribution lines should be set up separately cable bridge laying.
Question 5: Are explosion-proof lamps required to be installed in the boiler room of oil and gas boiler rooms and the oil storage room of diesel generator rooms?
Opinion: oil, gas boiler room boiler room, diesel generator room oil storage room is an explosive hazardous places, should be set up explosion-proof lamps.
Question 6: Is the load of the basement sewage pump fire load? Can I use double power supply box with fire shutter ***?
Opinion: whether the sewage pump is a fire fighting facilities by the water supply and drainage professionals, such as fire fighting facilities can be with the same fire protection partition of the fire shutter **** with a double power box.
Question 7. "Civil Building Electrical Design Code" JGJ16-2008, Article 7.4.1, paragraph 2, all of a class of high-level should be used for low-smoke halogen-free or smoke-free halogen-free wires and cables, whether or not it includes residential buildings and cables within the residence?
Opinion: According to the requirements of the code, all of the first class of high-rise should use low-smoke halogen-free or smoke halogen-free wires and cables.
Question 8: According to the "garage building design specification" JGJ100-2015 7.4.1: extra-large and large garages should be powered by a load, the said power supply according to a load, is the garage all loads in the power level is a load or refers to the fire load?
Processing Opinion: Load level regulations according to the "garage building design specification" JGJ 100-2015
7.4.1 Article 7.4.1 of the article explains the content of the first class load including but not limited to the fire load.
(B) building intelligence part
Question 1. Residential and commercial and residential buildings fiber to the home system design depth: the design unit that the construction drawings should be the construction side of the construction side of the design of a separate commissioned professional company, did not provide a complete design drawings, and construction drawing review engineers that the review of the entire project, regardless of the construction side of the commissioned design, should be synchronized with the review and reach the depth of the construction drawings. How should this divergence be handled?
Disposition: In accordance with the requirements of the Provisions on the Depth of Preparation of Design Documents for Construction Projects, the fiber-to-the-home system for residential and commercial buildings should be submitted for review and reach the depth of the construction drawings in a synchronized manner.
Question 2. fiber optic into the building at the need to set the signal surge protector? Comprehensive wiring system engineering design specification "GB50311-2016," Article 8.0.10 (mandatory provisions): When the cable from outside the building into the building, should be used to adapt the signal surge protector. Fiber is not conductive, is a signal surge protector required?
Processing Opinion: According to the article 8.0.10 of "Engineering Design Code for Comprehensive Wiring Systems" GB50311-2016 and article 5.5.1 of "Technical Specification for Lightning Protection for Electronic Information Systems in Buildings" GB50343-2012, the equipment box in the building where the optical fiber is introduced into the building from the outside of the building should be equipped with an appropriate signal surge protector. Construction drawings are not designed in accordance with the above requirements, the review should be mentioned must be modified (violation of the strong article).
(C) fire part
Issue 1. According to the Ministry of Emergency Management documents, prohibit the underground garage charging parking spaces, and according to the "Interim Measures for the Construction and Operation Management of Electric Vehicle Charging Infrastructure in Hunan Province," Xiang Zheng Fa 201659 No. 4, Article 4 of the new residential allotment of parking spaces, 100% of the construction of charging facilities or reserved for the construction and installation conditions. With underground garage residential neighborhoods are set up electric vehicle charging facilities?
Opinion: According to Xiang Zheng Fa No. 201659, Article IV.
Issue 2. Mechanical pressurized air supply system any normally closed pressurized air supply opening, pressurized fan should be able to automatically start; smoke exhaust system any smoke valve or smoke vent opening, smoke exhaust fan, filler fan automatically start. Add linkage control. Technical Standard for Building Smoke Prevention and Exhaust System GB51251-2017 Clause 5.1.2(4), 5.2.2(4), and Sichuan Fire Research Institute of the Ministry of Emergency Management's reply letter (2019). Is this automatic activation controlled through the module bus? Or must a hardwire be set up to control it?
Processing Opinion: According to the code and the main editorial unit of the code, the Ministry of Emergency Management Sichuan Fire Research Institute reply letter (2019) text implementation, for a certain start-up through the system of any exhaust smoke valve (port) after the linkage of the start-up, to meet the "Building Smoke and Smoke Exhaust System Technical Standards" GB51251-2017 Article 5.2.3 of the exhaust smoke valve (port) opening signal and smoke exhaust fan The requirement of linkage is sufficient. Construction drawings are not designed in accordance with the above requirements, the review should be mentioned must be revised (violation of the strong article).
Question 3: Should the generator room attached to the auxiliary room of a gas station be equipped with a fire alarm device?
Opinions: should be set. Refer to Article 8.4.3 and the explanation of Article 8.4.3 in the Building Design Fire Prevention Code GB50016-2014 (2018 edition). Construction drawings are not designed in accordance with the above requirements, the review comments should be mentioned must be revised (violation of the strong article).
Question 4: Scope of fire door monitoring system: Should fire door monitoring system be provided for both normally open and normally closed fire doors?
Opinion: According to the provisions of Article 6.5.1 and the explanations of Article 6.5.1 of the Code for Fire Protection of Building Design GB50016-2014 (2018 Edition), the fire door monitoring system should be set up for normally open fire doors, and the fire door monitoring system can be set up for normally closed fire doors.
Question 5: Article 8.4.1 (8) of the Building Design Fire Prevention Code GB50016-2014 (2018): automatic fire alarm system shall be set up for singing, dancing, entertainment and projection of amusement parks. According to Article 5.4.9 and Building Regulations 20191, internet cafes and foot massage parlors belong to singing, dancing, entertainment and projection venues. Article 8.4.1 (8) of GB50016-2014 (2018). In engineering practice, some Internet cafes, Internet cafes, foot massage parlors are small in scale (a few hundred square meters), and the original building itself has not been equipped with fire alarm and water sprinkler facilities, so if the fire alarm, water sprinkler, and smoke evacuation systems are set up in accordance with the requirements of Article 8.4.1(8), 8.3.4(7), and 8.5.3(1) of "Construction Regulation", the investment is too large, and the basic conditions of the construction are lacking. Can be appropriately relaxed?
Disposition: The code should be strictly enforced. Construction drawings are not designed in accordance with the above requirements, the review comments should be mentioned must be revised (violation of the strong article).
Question 6. Are loads within the following ranges non-fire loads?
a. Fire elevator machine room sockets, lighting, shaft lighting, shaft maintenance outlets, machine room air conditioning, machine room exhaust fans, etc.;
b. Fire control room sockets, air conditioning; c. substation sockets, air conditioning;
d. Smoke control room, the blower room, such as smoke room, the blower room sockets, lighting, such as fire control room, the air conditioning in the fire elevator machine room.
Disposition: Outlets, lighting, air-conditioning equipment in the engine room area should be understood as serving the engine room itself, if the power cut for a long time, will cause the fire control room, fire elevator, etc. difficult to maintain normal operation, can be considered according to the fire load, from the double cut box in this engine room to take power directly.
Question 7. GB51309-2018 Article 3.8.2, paragraph 2, "Backup lighting should be supplied by normal lighting power and fire power dedicated emergency circuit after mutual injection. Can the standby lighting in the fire pump room, power substation and fire control room draw power directly from the double-cutting box in the engine room?
Opinion: The power can be taken directly from the double-cutting box in this engine room.
Question 8: Is full overload protection required for the fire load distribution trunk (not the end, but the outlet in the substation)?
Opinion: The first end of the trunk line (in the substation house) can be overload protected, the rest is only single magnetic detachment.
Question 9. According to the "Fire Emergency Lighting and Evacuation Indicator System Technical Standard" GB51309-2018 design, the centralized power supply inlet should be drawn from the fire power supply, but the editor-in-chief Ding Hongjun propaganda explains that the current emergency lighting system set up centralized batteries (or lamps and lanterns with their own battery), the reliability of the centralized power supply has been very high under the premise that the centralized power supply front-end inlet is drawn from the low voltage cabinet in an independent single circuit. Low-voltage cabinet within the independent single circuit is feasible?
Opinion: feasible.
(d) other
Question 1. On the scale of the review of drawings, the code "should" and "appropriate" provisions should be implemented, the developer and the design of other considerations and intentionally ignored, the review of drawings, whether it is on the strong articles and safety outside the relaxation of the scale? When reviewing the drawings, will the scale be relaxed for the contents other than the strong provisions and safety? Decoration of the fire review, the original rough design is not set electrical fire monitoring system, fire door monitoring system, etc., proposed if the whole building fire review is required to set, if only part of the floor for review, it is not required by the design side to explain the reasons, is it feasible?
Opinion: the mandatory provisions of the standard specification and the "Hunan Province, electrical construction engineering design documents technical review of construction drawings," the provisions of the book should be used as a review of the main points.
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