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1、UDC SHIndustrial Standard of the Peoples Republic of ChinaP SH 3004-1999Design Code for Heating, Ventilation and Air Conditioning in Petrochemical Industry石油化工采暖通风与空气调节设计规范Issued on April 15, 1999 Implemented as of September 1, 1999Issued by The State Bureau of Petroleum & Chemical IndustryIndustria
2、l Standard of the Peoples Republic of ChinaSH3004 - 1999Design Code for Heating, Ventilation and Air Conditioning in Petrochemical IndustryPrepared by: Lanzhou Design Institute of China Petrochemical Group CorporationEdited and Compiled by: China Petrochemical Group CorporationApproved by: State Bur
3、eau of Petroleum and Chemical Industry1999, BeijingIntroductionThis Code is provided on the basis of the revisions made to the original edition of Design Code for Heating, Ventilation and Air Conditioning in Petrochemical Industry by our Institute with the participation of Beijing Petrochemical Engi
4、neering Company according to the Notice of Document No. Jian-Bia-Zi - 269 issued by China Petrochemical Group Corporation.This Code is divided into 5 chapters and 3 appendixes. The main contents of this revision are as follows:1. The provisions in the original code which are not adaptive to the nati
5、onal current codes are revised, such as the classification of explosion hazardous areas, the positive pressure values of positive-pressure type explosion-proof electrical equipment, the gas emission standards, air duct materials for ventilation and air conditioning, etc., so as to make them comply w
6、ith the national current standards. 2. According to the gist of Several Provisions for Plant Design of China Petrochemical Group Corporation, clauses in terms of the reductions in personnel, land coverage and investment, saving energy, etc., have been revised and added. 3. Taking into account the wi
7、de applications of the Distributed Control System (DCS) in the petrochemical projects, the experience in the design of the air conditioning for the DCS control room has been summed up, and the clauses in terms of the environmental conditions for DCS control room, the control and operation of air con
8、ditioning system, the air current composition, etc., have been added and revised. 4. A part of the clauses regarding safety aspects have been added and revised, such as the centralized monitoring and control of the major ventilation and air conditioning units and stand by of the equipment, the inter
9、locks of the air conditioning units of DCS control room with the fire automatic alarm system, the exhaust of the rooms equipped with the full gas submerging fire fighting system, etc. 5. Those clauses in the original code which are seldom used or difficult to function, are cancelled or modified, suc
10、h as heating with steam-ejection hot water, the recycle of condensate for the steam heating system, diffusive explosion hazardous substances or harmful gases and vapor, and distribution of overall exhaust rate for the plant buildings, etc. During revision, wide surveys and studies have been made bas
11、ed on the problems existing in the original code, the practical experiences of the recent years in the design of heating, ventilation and air conditioning in the petrochemical industry have been summed up, the comments on the relevant design, construction, operations, etc., have been asked for, the
12、major problems found have been discussed several times and the code is finalized after review is made.In case any modification and supplementation is found necessary during the implementation of this Code, please provide the comments and relevant information to our institute, so that the reference c
13、an be made to for later revision of this Code. Address of our institute: 1, Fuli West Road, Xigu District, Lanzhou City, Gansu Province Post Code: 730060This code is mainly prepared by Lanzhou Design Institute, China Petrochemical Group Corporation with the participation of Beijing Petrochemical Eng
14、ineering Company, China Petrochemical CorporationKey Draftsman: Jiang Weihan, Chi Chunlin, Shi Qiuhe and Bao Changwei CONTENTS1. General Principles72. Heating72.1 General Provisions72.2 Heating System83. Ventilation103.1 General Provisions103.2 Natural Ventilation123.3 Mechanical Ventilation123.4 Em
15、ergency Ventilation163.5 Equipment and Air Ducts184. Air Conditioning194.1 General Provisions194.2 Calculation of Loads214.3 System Design225. Fire Prevention and Explosion Protection255.1 Fire Prevention and Explosion Protection of HVAC System255.2 Fire Prevention and Explosion Protection of Ventil
16、ation and Air Conditioning System265.3 Plenums295.4 Positive Draft for Motors30Appendix A - Calculated Indoor Temperatures for Heating in Winter32Appendix B - Numbers of Air Changes for Petrochemical Shops34Appendix C - Numbers of Air Changes for Plenums36Notes of Wording36Attachment : Explanatory N
17、otes1. General Principles1.0.1 This Code is established for the purpose of implementing the relevant national general and specific policies in the design of heating, ventilation and air conditioning (HVAC) for the petrochemical enterprises, so as to provide necessary conditions for safe production a
18、ctivities, improvement of labor conditions, product quality assurance, environmental protection and rational utilization of resources.1.0.2 This Code is applicable to the design of HVAC of the newly constructed, expanded and rebuilt production plant buildings and annex buildings for the petrochemica
19、l enterprises. 1.0.3 The operation status and major parameters shall be centrally monitored and controlled for those HVAC units which exerts relative significant effect on the production safety and product quality. 1.0.4 In the design, the full-tine or part-time specialized technical personnel and t
20、he operation and maintenance personnel, as well as the appropriate testing instruments shall be specified according to the quantity, importance and complexity level of the HVAC units.1.0.5 During the implementation of this Code, the requirements set in the national current mandatory standard Design
21、Code for Heating, Ventilation and Air Conditioning in Petrochemical Industry and the other relevant current standards and specifications shall be satisfied. 2. Heating2.1 General Provisions2.1.1 Centralized heating system shall be provided for the plant buildings and the annex buildings in the regio
22、ns where the number of days with a mean daily temperature for years constantly 5oC is greater than 90 days, and there are some people usually staying in rooms or certain requirements for room temperatures made for the production.2.1.2 Centralized heating system is allowed to provide for the plant bu
23、ildings and annex buildings in the regions where the number of days with a mean daily temperature for years constantly 5oC is 45 59 days, and the mean RH value for the coldest months for years is equal to or greater than 75% and there are operation personnel staying collectively and frequently, prov
24、ided that there is waste heat in the plant area that can be utilized and it is approved by the department in charge. 2.1.3 Centralized heating system is allowed to provide for plant buildings and annex buildings in the regions other than that as specified in Clause 2.1.1 and Clause 2.1.2 of this Cod
25、e when there are special requirements for the ambient temperature made for production. 2.1.4 As for the production plant buildings provided with the centralized heating, when there in no special requirements for the ambient temperature made for production and the building area used by each worker do
26、es not exceed 100m2, it is not suggested to provide an overall heating, however, the local heating shall be provided in the fixed work points, and when the work points are not fixed, the heating room shall be provided.2.1.5 The heating medium for the centralized heating shall be determined according
27、 to the economic and technical evaluations on the heat supply conditions of the plant area. First of all, the waste heat of production shall be utilized, and it is recommended to use hot water as heating medium, and when the heating in plant area mainly uses the steam for production, the steam shall
28、 be used as the heating medium. It is suggested to recycle the condensate.2.1.6 In the design of centralized heating, the calculation of interior temperature in winter shall be made and determined according to the factors of the purposes of rooms, production characteristics, labor intensity, level o
29、f automation and mechanization, conditions of maintenance and personnel stay, etc. The calculation of interior temperature for heating of the rooms of general production plant buildings and annex buildings shall be made and determined according to Appendix A to this Code.2.2 Heating System2.2.1 Sele
30、ction of heating systems shall comply with the following provisions:(1). When hot water is used as heating medium, it is recommended to used a single pipeline system for the multi-storey buildings. (2). When steam is used as heating medium, it is recommended to use dual-piping system for supplying s
31、team with rises and distributing with downcomers.2.2.2 Selection of radiators shall comply with the following provisions: (1). It is recommended to use the radiators that are easy to be cleaned for the production plant buildings with relatively high requirement for dust dispersion or dust proof. (2)
32、. It is recommended to use the radiators made of iron casting for the production plant buildings in which the corrosive gases are dispersed or the room relative humidity is high. (3). It is recommended to use the radiators with a nice appearance for the administrative offices and the rooms for the l
33、iving and welfare purposes, laboratories, instrument control rooms, etc.(4). The plate-type, flat- tubing type and steel-sheet pillar type radiators shall not be used in the steam heating system.2.2.3 Hot air heating shall be used when there is any of the following cases:(1). No radiator is allowed
34、to use for heating because of the special requirements for the production.(2). The heating system can be combined with the mechanical air supply system. (3). Due to large capacity of rooms, the other heating modes can not satisfy the requirements. (4). It is economic and rational to utilize recycle
35、air for heating. Note: Heating with recycle air shall comply with the national current standard Health Standard for Design of Industrial Enterprises and the stipulation of Clause 5.2.3 of this Code. 2.2.4 For the plant buildings with hot air heating system, when the production is carried out intermi
36、ttently and heating is required for the personnel on duty, it is recommended to use the combined heating (i.e. the hot air heating for operation hours and radiators is used for heating during off-operation hours).2.2.5 For the areas where the calculated outdoor temperature for ventilation in winter
37、is lower than or equal to -10oC, at least, two systems or the one system with two fans shall be provided for the hot air heating with full fresh air. When either system or either fan in the system is in failure, the minimum capacity for fresh air and heating shall be maintained. 2.2.6 When the desig
38、n is made for the up and down through heating for multi-storey plant building, the hot air ascending effect shall be taken into account, and the vertical distribution of heat supply rate shall be descended from bottom to top. Note: As for the installation openings with covers they shall not be regar
39、ded as up and down through arrangement.2.2.7 It is suggested to use the metal radiation plates for the local heating within the areas of plant buildings or for the local work points, however, when it is verified to be reasonable through economic and technical comparisons, it can be used for overall
40、heating. When hot water is used as heat medium, the average temperature of hot water shall not be lower than 110oC. When steam is used as heat medium, the steam pressure shall be 0.4MPa and shall not be 0.2MPa. The temperature of heat medium shall also comply with the stipulation of Clause 5.1.1 of
41、this Code.2.2.8 The hot water pipeline or steam pipeline for heating purpose and the hot water pipeline and steam pipeline for the production and living purposes shall be run separately within same building. The pipelines for radiator heating system shall be lain separately from that for the hot air
42、 heating system or that for the heating systems of ventilation and air conditioning.2.2.9 For the rooms with corrosive gases, the corrosion protective measures shall be take to protect the surfaces of piping and radiators. 2.2.10 The heating-purpose pipelines shall be insulated when there is one of
43、the following cases:(1). Pipelines are laid in the trench, ceiling, non-heating room or the places subject to freezing.(2). Rooms or locations require insulation to be made on the passing-through pipelines.(3). Non-beneficial heat loss of pipelines is relatively great. 3. Ventilation3.1 General Prov
44、isions3.1.1 For the petrochemical production plants in which the harmful substances and explosion hazardous substances, comprehensively protective and control measures shall be taken in the designs in terms of process, plot-plan, architecture, equipment, ventilation, etc. 3.1.2 Adoption of Non-toxic
45、ity or low-toxicity production processes shall be taken into account in the process design. The tightness of production plants that probably diffuse and leak harmful substances shall be strengthened, and operations of mechanization and automation shall be used.The production process with highly toxi
46、c substances shall be performed under the operation conditions of tightness or under back pressure. Automation or blocked operation shall be used.3.1.3 The production plants that diffuse the explosion-hazardous substance shall be installed in open air. When they have to be installed in plant buildin
47、gs, the open-type or semi-open type buildings shall be used.3.1.4 The layout of plant buildings and the production processes that disperse the harmful substances shall comply with the following requirements:(1). The production processes which disperse extremely toxic, highly toxic and relatively tox
48、ic substances, shall be laid out in a same building which shall be blocked. (2). The operation and maintenance zones shall be defined clearly, and the operation zone shall be set out nearby the exterior windows.(3). It is necessary to avoid using multi-span plant building.(4). In the multi-storey buildings, the production processes which diffuse heat and harmful gases, shall be arranged on the upper floors. When it is necess
