Disclosure to Promote the Right To Information

Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.

इंटरनेट मानक

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“Invent a New India Using Knowledge”

“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru

“Step Out From the Old to the New”

“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan

“The Right to Information, The Right to Live”

“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam

“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 2374 (1963): Ice tanks [MED 3: Refrigeration and AirConditioning]

Indian Standard

SPECIFICATION FOR ICE TANKS

Refrigeration and Air-Conditioning Sectional Committee, BDC 18

Chairman Representing

SIIRI J. C. KAPUR Air-Conditioning Corporation Ltd., Calcutta, and Air-Conditioning and Refrigeration Council of India

Members

SIXRI MOHAN T. ADVANI Blue Star Engineering Co. ( Bombay) Private

SHRI RAM D. MALANI ( Alternate ) Ltd., Bombay

SHRI Y. D. AHUJA The Economy Refrigeration and Engineering Co.

SEIRI N. BALASUBRAMANIAN Ltd., Bombay

Voltas Ltd., Bombay SHRI K. V. RAMAN ( Alternate )

1,~ S. N. BHAR~AVA Naval Headquarters SHRI S. K. BHAT~ACHARYA Central Public Works Department SIIRI S. Ii. CIIAIJDHURY Ministry of Food & Agriculture SHRI N. K. D. CKOUDRURY Centfialor~~.lding Research Institute ( CSIR ),

SHRI B. C. RAY CHOUD~URY ( Akernck? ) SHRI P. N. DEOBHAKTA Development Wing (Ministry of Economic &

Defence Co-ordination ) SARI A. N. MUKHERJEE ( Alternate )

SHRI K. C. JERATH Engineer-in-Chief’s Branch, Army Headquarters SHRI G. K. KABRA The Hyderabad Allwyn Metal Works Ltd.,

Hyderabad SHRI H. J. LENTIN Godrej & Boyce Mfg. Co. (P) Ltd., Bombay SLJRO-COM M. S. MALHOTRA Ministry of Defence ( R & D ) SHRI NAUNIHAL SINC+H MATHUR National Physics1 Laboratory ( CSIR ), New

Delhi, and Indian Society of Refrigerating Engineers, Calcutta,

SHRI A. P. SHIVDASANI Indian Society of Refrigerating Engineers, ( Alternate ) Calcutta

SHRI S. N. MUK~RJI Government Test House, Calcutta SHRI B. K. MUKHERJEE ( Alternate )

S~IRI AMAR SINGH NAQRA Railway Board ( Ministry of Railways ) SHRI C. B. PATEL National Buildings Orgenization ( Ministry of

Works, Housing & Rehabilitation ) SHRI V. D. TIWA~I ( Alternate )

( Continued on page 2 )

INDIAN STANDARDS INSTITUTION

MANAK BHAVAN, 9 MATHURA ROAD

NEW DELHI 1

fS : 2374 - 1963

( Continued from page 1 )

Members SHRI K. N. R. PILLAI

Representing Directorate General of Posts & Telegraphs

( Ministry of Transport & Communications ), Jabalpur

SHRI I<. R. D. IYENC+AR ( Alternate ) SHRI R. BALASUBRAMANIAM ( Alternate )

SRRI B. J.‘RAMRAKHIANI Ministry of Labour & Employment SHRI U. S. SAVAEOOR Directorate General of Supplies

( Ministry of Economic 84 ordination )

SFIRI D. T. GURSAHANI ( Alternate ) DR. H. C. VISVESVARAYA, Director, ISI ( Ex-officio Member )

Deputy Director ( Bldg )

Secretary SHRI C. 12. RAMA RAO

Assistant Director ( Bldg )

Ice Plant Subcommittee, BDC 18 : 5

Convener

& Disposals Defence Co-

SHRI Y. D. AHUJA The Economy Refrigcmtion & Engineering Co. Ltd., Bombay

Members SHRI C. A. ALMEIDA Bombay Ammonia & Refrigeration Co. (P) Ltd.,

Bombay SIIRI MAX MOHAN SIN~R ( Alternate )

SHRI B. B. BIXAROAVA The Ice Machinery Mart, Gwalior SHRI P. N. DEOBHAKTA Development Wing (Ministry of Economic &

Defence Co-ordination ) SIIRI A. N. MUKHERJEII: ( Alternate )

SARI U. S. SAVAKOOR Directorate General of Supplies & Disposals (Ministry of Economic & Defence Co- ordination )

SRRI D. T. GURSAHANI ( Alternate )

18:2374-1963

Indian Standard

SPECIFICATION FOR ICE TANKS

0. FOREWORD

0.1 This Indian Standard was adopted by the Indian Standards Institution on 31 May 1963, after the draft finalized by the Refrigera- tion and Air-Conditioning Sectional Committee had been approved by the Building Division Council.

0.2 Commercial ice making is gaining importance due to the increased demand for ice all over the country and ice plants are being set up in increasing numbers to meet the needs. Simultaneously, the manufac- ture of ice making machinery has made considerable progress during the last few years and today almost all the components are indigenously manufactured except the ammonia compressors, controls and valves. A number of schemes for the indigenous manufacture of items which are now being imported is underway and it may be expected in the near future that all the needs of the industry would be met fully from indigenous sources. Besides, the ice making machinery offers con- siderable potential for export and attempts, are being made to increase its export. It is necessary in this connection that the indigenously manufactured items should not only conform to minimum standards of manufacture and performance but also should be able to compete both in quality and price in the foreign markets. In order to assist the indigenous industry engaged in this field, a series of standards is being formulated. Indian Standard Specification for Ice Cans ( IS : 1869-1961) h as already been published and this standard covers the requirements for ice tanks in which a brine bath at sub-zero temperatures is used for freezing water contained in ice cans.

0.3 The capacity of ice tanks used in India varies from as small as 0.5 metric tonne to 90 metric tonnes or more per day of 24 hours depending on the requirements, and therefore, it has not been found feasible at the present stage to lay down specific dimensions for ice tanks. However, certain points to be borne in mind in designing them have been given and it is hoped these will give the necessary guidance in arriving at suitable sizes of ice tanks.

0.4 The Sectional Committee responsible for the preparation of this standard has taken into consideration the views of producers, consumers and technologists and has related the standard to the

i i

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18:2374-1963

manufacturing and trade practices followed in the country in this field. Due weightage has also been given to the need for international co-ordination among standards prevailing in different countries of the world.

0.5 Wherever a reference to any Indian Standard appears in this specification, it shall be taken as a reference to its latest version.

0.6 Metric system has been adopted in India and all quantities and dimensions in this standard have been given in this system.

0.7 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS : 2-1960 Rules for Rounding Off Numerical Values ( Revised). The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.

0.8 This standard is intended chiefly to cover the technical provisions relating to ice tanks, and it does not cover all the necessary provisions of a contract.

1. SCOPE

1.1 This standard covers the general dimensions, materials and construction, finish and testing of ice tanks used in the manufacture of block ice.

2. GENERAL DIMENSIONS

2.1 The dimensions of the tank (see also 0.3 ) depend on the following factors: .

a) Capacity of ice plant;

b) Size, number and arrangement of ice cans;

c) Type and design of brine agitator; and

d) Type and design of coil or brine cooler.

2.1.1 The depth of the tank depends on the sizes of the ice cans ( see IS : 1869-1961 Specification for Ice Cans) and height of coil, and should be at least 25 mm more than the depth of the ice can.

2.1.2 The length and width of the ice tank depend ‘on the number of ice cans, type of coil and the design of agitator which the tank will have to accommodate.

4

IS : 2314 - 1963

3. MATERIALS AND CONSTRUCTION

3.1 The tank shall be fabricated out of black steel sheets conforming to the requirements specified in IS : 226-1962 Specification for Structural Steel ( Standard Quality ) ( Third Revision ).

3.2 Thickness of steel plates used for sides and bottom of ice tanks shall be as given below:

Depth of Tank Thickness, Min

60 to 99 cm 5 mm

100 cm and above 6.5 mm

3.3 The coil casing shall be fabricated out of steel plates having a minimum thickness of 3 mm.

3.4 Tanks of all sizes shall have an angle iron welded to the top -edge of the tank both along the length and width. Angle iron shall not be smaller than 50 x 50 mm and is meant for the purpose of stiffening the sides and also supporting the wooden framework, Tie rods shall be provided at suitable intervals to prevent the bulging of sides caused by hydraulic pressure. Coil casing may be of the bolted type and the top and end of the coil shall be covered with steel plates not less than 3 mm in thickness.

3.5 The bulk head ( plate supporting funnel or hood where horizontal agitator is used ) of ice tanks of capacity one metric tonne and more shall be fabricated out of steel plates having a minimum thickness of 5 mm.

3.6 Where partitions are considered necessary, they shall be fabricated out of steel plates not less than 3 mm in thickness.

3.7 Precautions to be Exercised in Welding

3.7.1 General-Welding of steel plates shall be generally done in accordance with *IS : 823- Code of Procedure for Manual Metal Arc Welding of Mild Steel.

3.7.2 For large tanks welded at site, a 5 x 50-mm steel backing strip shall be used along and underneath butt-welded joints.

3.7.3 Underneath the steel backing strip, any one of the following materials ( suiting to the insulating material) shall be used to prevent the insulating material from burning while welding ( see Fig. 1 ):

a) 2 layers of asbestos paper of minimum size 75 x 1 mm,

*Under preparation. Until that standard is published, the welding procedure shall be as agreed to between the concerned parties.

5

IS : 2374 - 1963

b) 6 mm thick cement plaster of suitable mix, or

c) 25mm slab of cement concrete of suitable proportions.

1.5 To 3 mm APART

BOTTOM

CEMENT PLASTER OR RCC SLAB

STEEL BACKING STRIP 50 x 5 mm

PIG. 1 WORKING PROCEDURE FOR WELDING OF STEEL PLATES

3.7.4 A IO-mm round steel bar shall be tack welded to the bottom plate to assist in keeping side and end plates straight and in line while welding them to the bottom ( see Fig. 2); alternatively, angle irons of length 15 cm and of minimum size 40 x 40 x 6 mm (see IS : 808 1957 Specification for Rolled Steel Beam, Channel and Angle Sections ) may be welded to the bottom plate at 90 cm centres.

w- SIDE OR END PLATE

1 I! 10mm 0 STEEL ROD, OR .l BOTTOM

40x 4Ox6mm ANGLE IRON PLATE TACK WELDED TO BOTTOM PLATE

25mm OVERLAP ON SIDES AND ENDS OF TANK BOTTOM

FIG. 2 WELDING DETAILS AT JUNCTION OF BOTTOM AND SIDE STEEL PLATES

4. FINISH

4.1 The inside of the tank, after fabrication, shall be finished with anti-corrosive paint which shall be capable of withstanding the corrosive action of brine at sub-zero temperatures.

5. TESTING

5.1 The tank shall be tested for leakage by filling it with water. This test shall be carried out before painting.

6

IS: 2374- 1963

6. MARKING

6.1 Each tank should be marked with the manufacturer’s name or trade-mark either inside or outside as found convenient to the manufacturer.

6.1.1 Each ice tank may also be marked with the ISI Certification Mark.

NOTE - The use of the IS1 Certification Mark is governed by the provisions of the Indian Standards Institution ( Certification Marks ) Act, and the Rules and Regulations made thereunder. Presence of this mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements of that Standard, under a well-defined system of inspection, testing and quality control during production. This system, which is devised and supervised by IS1 and operated by the producer, has the further safeguard that the products as actually marketed are continuously checked by ISI for conformity to the Standard. Details of conditions, under which a licence for the use of the IS1 Certification Mark may be granted to manufacturers or processors, may be obtained from the Indian Standards Institution.

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INDIAN STANDARDS INSTITUTION

The Indian Standards Institution (ISI), which started functioning in 1947, is the national standards organization for India. its principal object is to prepare standards on national and inter- national basis, and promote their general adoption.

The overall control of ISI, which is run and financed jointly as a non-profit making body by the Central Government and private enterprise, is exercised by a General Council, composed of representatives of Central and State Governments: leading trade, scientific and technological organizations: and subscribing members. The Union Minister for Commerce & Industry is the ex-officio President of ISI.

The present technical activity of ISI is carried out through its Division Councils for Agricultural and Food Products; Building; Chemical; Electrotechnical; Engineering; Structural and Metals: and Textile. All technical work relating to the formulation and revision of standards is done by committees appointed by and under the direction of their respective Division Councils. These committees consist of experts drawn from manufacturing units, technical institutions, purchase organizations and other concerned bodies.

To make available benefits of Indian Standards to the common man, ISI has introduced its Certification Marks Scheme under the Indian Standards Institution (Certification Marks) Act, 1952, as amended by the Amendment Act, 1961. According to this Act, quality goods conforming to Indian Standards can carry the ISI Certification Mark. This Mark is a third party guarantee of quality of marked goods. Licences to use the ISI Certification Mark are granted to manufacturers using reliable methods of quality control and providing facilities for inspection by ISI staff.

In the international field, ISI represents India on the Inter- national Organization for Standardization (ISO) and the Inter- national Electrotechnical Commission (IEC). IS0 and IEC respectively link 46 and 36 countries, and function through 104 and 53 technical committees: ISI participates in 75 technical committees of IS0 and all the technical committees of IEC. The committees and subcommittees of IEC and IS0 for which ISI holds the secretariat deal with: Electric Fans, Lac, Mica, Pictorial Markings for Handling of Goods, Liquid Flow Measurements in Open Channels, Spices and Condiments, and Stimulants.

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