SNIP II-35-76 * - Boilers

SNIP II-35-76 * - Boilers

building regulations

DESIGN STANDARDS

boiler plant

SNIP II-35-76

Chapter SNIP II-35-76 «Boilers" developed by the InstituteSantehproekt USSR State Construction Committee with the participation of institutions VNIPIenergoprom USSR Ministry of Energy, CKTI them.IIPolzunova Minenergomasha, Teploproekt Minmontazhspetsstroya USSR, Krasnoyarsk PromstroyNIIproekt Montazhstroya USSR and Gidrotehmontazh Minmontazhspetsstroya USSR.

With the introduction of this chapter are repealed SNIP SNIP II-head G.9-65 "Boilers.Design Standards "and" Guidelines for the design of boiler installations "(SN 350-66).

EDITORS engineers YBA., O.Kosov (Gosstroy USSR), IISchoolboy, MDPitting (Santehproekt).

approved by the Decree of the State Affairs Committee of the Council of Ministers building on December 31, 1976 № 229.

Changes approved the decision of the State Construction Committee of the USSR from 09.08.77, the number 140 and entered with 01/01/78, the number 1 and the change approvedResolution of the State Construction Committee of Russia from 09.11.97, the number 18-52 included in the text of the document, changed items are marked with *.

With the introduction of SNIP 2.04.14-88 approved.fast.USSR State Committee from August 9, 1988 № 155, are repealed with 8.1.90 of section 13 and the application 6-8.

State Council of Ministers Committee for construction (Gosstroy USSR)	Building Regulations	SNIP II-35-76
Boilers	Instead SNIP II-G.9.65 CH 350-66

1. GENERAL

1.1.These rules and regulations must be observed in the design of new and reconstruction of boiler plants (boilers) with steam, hot water and steam boilers, regardless of performance, with a vapor pressure of not more than 40 kgf / cm2 * and with a water temperature of 200 ° C.

___________

* Here and below indicates the absolute value

Note: These standards rules do not apply to the design of boilers for thermal power, portable boilers, boilers with electrode boilers, waste heat boilers, boilers with high-temperature organic, coolants, (HERE)and other specialized types of boilers for technological purposes, for boilers for residential heating.

1.2.In the design of boilers with boilers, subordinated Gosgortechnadzor USSR (with a vapor pressure of more than 1.7 kgf / cm2, and with water temperatures over 115 ° C), in addition to these rules and regulations must be observed, in particular, the safety rules approved by the State Technical Supervision of the USSR.

1.3. * Designing new and reconstructed boiler should be carried out in accordance with approved heating schemes developed taking into account the construction of stand-alone (Individual) boiler.

In the absence of an approved scheme of heat supply boiler design is permitted under the relevant feasibility studies (FS), agreed in the prescribed manner.

Fuel for boiler determined in coordination with fuel containing organizations in due course.The use of solid or liquid fuel for the boiler roof is not allowed.

(Revised edition. Chg. Number 1).

1.4.Boilers for its intended purpose are divided into:

heaters - to provide heat to the heating, ventilation and hot water supply;

heating and production - to provide heat to the heating, ventilation, hot water and process heat;

production - for process heating..

1.5 * Boiler placement are divided into:

detached;

Attached buildings for other purposes;

built into the building for other purposes, regardless of the placement of floor;

roof.

(Revised edition. Chg. Number 1).

1.6. * For industrial buildings industrial design may be adjoined, built and roof boiler.For boilers, adjoined to the buildings of this destination, the total installed thermal power boiler unit capacity of each boiler and heat carrier parameters are normalized.This boiler must be placed at the walls of the building, where the distance from the wall of the boiler room to the nearest opening should be at least 2 m horizontally, and the distance from the overlap of the boiler to the nearest opening in the vertical - not less than 8 m

For boilers built into production.the building industry, the application of boilers with steam pressure up to 0.07 MPa (1.7 kgf / cm2) and the water temperature up to 115 ° C thermal power boiler is not standardized.

Thermal power boilers with a steam pressure of 0.07 MPa (1.7 kgf / cm2) and eody temperature of over 115 ° C should not exceed the values ​​established by the Rules of the device and the safe operation of steam and hot water boilers, approved by the Russian State Technical Supervision.

Roof boilers for industrial buildings industrial design may be using boilers with steam pressure up to 0.07 MPa (1.7 kgf / cm2) and the water temperature up to 115 ° C.Thus a thermal power boiler should not exceed the heat requirements of the building for heating which it is intended, but not more than 5 MW.

not allowed to post roof and boiler built on industrial premises and warehouses in categories A and B on the explosion and fire hazard.

(Revised edition. Chg. Number 1).

1.7. * Placing boiler, built-in multi-residential buildings is not allowed.

For residential buildings may be adjoined unit and roof boiler.These boilers may be designed with the use of boilers with water temperature up to 115 ° C.

thermal boiler capacity must not exceed the needs for heat buildings, for heating which it is intended, and the thermal power roof boiler should not be greater than 3.0 MW.

not allowed to design adjoined boiler, directly adjacent to residential buildings by the entrance porch, and sections of walls with window openings, where the distance from the outer wall of the boiler room to the nearest window premises less than 4 m horizontally and the distance from the ceiling boiler to the nearest windowdwelling at least 8 meters vertically.

not be placed directly on the roof boiler overlap premises (floor premises is not a ground floor boiler room), as well as adjacent to the living quarters.

(Revised edition. Chg. Number 1)..

1.8 * allowed designing embedded, adjoined and roof boiler when applying for public, administrative and residential buildings:

- water boilers, hot water temperatures up to 115 ° C;

- boilers with vapor pressure to 0.07 MPa (1.7 kgf / cm2) satisfying

(t - 100), the V £ 100 for each boiler,

where t - the temperature of saturated steam at a working pressure, FROM;

V - Boiler water volume, m3.

In the boiler located in the basement, are not allowed to provide boilers are designed to operate on gaseous and liquid fuels having a flashpoint of vapors below 45 ° C.

total thermal capacity of individual boiler shall not exceed the needs for heat buildings or structures, for heating which it is intended, in addition, the thermal power must not exceed, MW:

3,0 - for the roof-top and built-in boiler with liquid boilersand gaseous fuels;

1,5 - for built-in boiler room with solid fuel boilers.

0bschaya adjoined thermal power boiler is not limited.

not be placed adjoined boiler from the main facade of the building.The distance from the wall to the nearest boiler building window should be at least 4 meters horizontally, and from the boiler to the nearest window covering at least 8 meters vertically.These boilers are also not allowed to place adjacent to, above and below the rooms while staying in them for more than 50 people.

not permitted roof design, built-in and adjoined to the buildings boiler pre-school and school facilities, to medical and dormitory building hospitals and clinics, to curative and dormitories resorts and leisure facilities.

(Revised edition. Chg. Number 1).

Made State Design Institute of the USSR State Construction Committee Santehproekt

approved decision of the State Committee of USSR Council of Ministers Affairs construction on December 31, 1976 № 229

term administration into effect January 1, 1978

1.9.Design of boiler plants, adjoined to the warehouses of combustible materials flammable and combustible liquids, is not allowed, except for boiler fuel depots (para. 11.51 of the present rules and regulations).

1.10.Must not be placed under the boiler built for public use (lobby and auditoriums, retail space of shops, classrooms schools, dining halls, restaurants, dressing room and bath soap, shower and so on. P.) And a warehouse of flammable materials.

1.11.Consumers for heating the heat of reliability include:

the first category - consumers, violation of district heating which is connected with the danger to human life or significant harm to the national economy (damage processing equipment, mass marriage of production);

second category - other heat consumers.

lists of consumers say the heat of the first category Allied and Union-republican ministries and departments in agreement with the USSR State Planning Committee and the USSR State Construction Committee.

1.12.Boilers for heat supply reliability to consumers include:

the first category - boilers, which are the only source of heat heating system and provide consumers the first category who do not have individual backup heat sources;

second category - other boiler.

1.13.Thermal load calculation and choice of boiler equipment must be determined for the three typical modes:

maximum and winter - when the average outdoor air temperature in the coldest five days;

the coldest month - when the average outdoor air temperature in the coldest month;

summer - at the design outdoor air temperature of the warm period (calculated parameters A).

These averages and computational outdoor temperature are taken in accordance with building codes for building climatology and geophysics, and heating engineering, ventilation and air conditioning.

1.14.For the heating of buildings and structures, having a house or heating in heating systems which allowed breaks should be provided the opportunity to work boiler equipment under these conditions.

1.15.Estimated boiler capacity is determined by the sum of the hourly heat consumption for heating and ventilation at the maximum-winter mode, the calculated heat consumption for hot water supply, determined in accordance with building regulations for the design of hot water, and the estimated costs of heat for technological purposes.In determining the boiler rated capacity should be considered as expenditure of heat for auxiliary needs of the boiler and heat losses in boiler and heat networks.

Note.Pacchetnye cost of heat for technological purposes must be taken with the possibility of a mismatch ychetom maximum expenditure of heat by individual consumers.

1.16.Quantity and unit performance boilers installed in the boiler, the boiler should be selected on the design capacity, checking operation of boilers for the warm period of the year;while in the case of failure of the largest on the performance of the boiler in the boiler of the first category must provide the remaining heat supply to consumers of the first category:

for process heating and ventilation system - in an amount determined by the minimum permissible load (regardless of the outside temperature);

for heating and hot water - in an amount determined by the regime of the coldest months.

In case of failure of one of the boiler, regardless of the category of boiler heat dispensed to consumers of the second category are not standardized.

Amendment.

maximum number of boilers installed in the boiler room, is determined on the basis of technical and economic calculations.

The boiler must be provided with the installation of at least two boilers, industrial boilers except the second category, which allowed the installation of the boiler.

1.17.The boiler projects should take the factory and typical layout of boilers and auxiliary equipment..

1.18 * Projects should be boiler include:

boilers, economizers, air heaters, ash collectors and other equipment in the block transportable version increased factory readiness;

enlarged mounting blocks of pipelines and gas-air;

consolidation groups technologically connected with each other auxiliary equipment by assembling it in a transportable mounting blocks with pipes and fittings.

For embedded, adjoined and roof boiler should provide automated boilers full operational readiness.

(Revised edition. Chg. Number 1)..

1.19 * Out of boiler buildings, outdoor areas, can be accommodated draft machines, scrubbers, deaerators, calciner, clarifiers, tanks for various purposes, fuel oil heaters;This should include measures to ensure the safe and reliable operation, protection against freezing pipes and fittings, as well as environmental measures from pollution and noise protection.

Possibility of installation of roof boiler on buildings of any purpose above the level of 26.5 meters shall be agreed with the territorial bodies of the State Fire Service Russian Interior Ministry.

(Revised edition. Chg. Number 1)..

1.20 * Technological scheme and layout of the boiler room equipment must provide:

optimum mechanization and automation of technological processes, safe and convenient equipment maintenance;

installation on queues equipment;

smallest length of communications;

optimal conditions for mechanization of repair work;

the possibility of entry into the boiler room floor vehicles (forklifts, electric vehicles) for the transport of equipment units and pipelines for repairs.

Automation of technological processes of individual boilers must ensure safe operation without permanent staff.

to repair equipment units, valves and pipelines weighing more than 50 kg should be provided, as a rule, inventory lifting device (electric cars, cranes).

If unable to maintain the equipment with the inventory of devices for this purpose may be to provide stationary lifting equipment (hoists, hoists, overhead cranes and overhead).Stationary lifting devices necessary when performing only assembly work, the project is not provided.

To provide repair equipment installed outdoors should be provided, as a rule, ground trackless cranes.

(Revised edition. Chg. Number 1).

1.21. * The boiler is necessary to provide repair parts or facilities for maintenance of equipment, valves, control and regulation devices.It should take into account the possibility of execution of works on current repair industry or regional specialized organizations such devices.

The autonomous boiler repair parts are not provided.