CONTENTS
General
Frequency
Management
Implementation of space programme
requires access to orbit and spectrum resources. Frequency Management,
involving selection of suitable orbital slots and frequency spectrum and
coordination of the same taking into account the mission requirements and
national and international regulatory provisions is an important activity
of DOS. Protection of S-band frequencies for Indian remote sensing
satellites and Telemetry, Tracking and Command TTC operations for launch
vehicles, coordination of geostationary orbital slots and C-band and
Ku-band spectrum for first and second generation of INSAT satellites,
coordination of wider coverages for INSAT, coordination of suitable
frequencies for scientific radars and other scientific applications have
been accomplished. Orbit frequency coordination is a continuous activity
that results in reaching technical agreements with different countries to
ensure coexistence with other satellite networks under the regulatory
framework of International Telecommunication Union (ITU). During the year,
filings for frequency allocation have been made for SATNAV payload and for
DCP operation. Follow up actions related to BSS allotment plan arising out
of World Radio Conference 2000 (WRC 2000) have been completed for securing
orbit spectrum for Direct To Home (DTH) broadcast for India.
At the national level, DOS is actively involved in
spectrum management related activities like Revision of National Frequency
Allocation Plan (NFAP 2000) ensuring availability of spectrum for planned
space services. Actions have also been taken to obtain national level
frequency licences for Indian Space projects, missions and
earth stations.
Systems Reliability
Systems Reliability groups at DOS Centres continued to make efforts
towards ensuring reliable operation of space systems through rigorous
quality control, test and evaluation and quality assurance activities. The
year marked the successful launch of GSLV-D1 with G-SAT-1, PSLV-C3
carrying TES, BIRD from DLR, Germany and PROBA from Belgium. All the
subsystems on-board TES satellite are functioning satisfactorily. After
completion of all tests, INSAT-3C was cleared for transportation to site
at Kourou for launch on-board Ariane
Launch Vehicle.
Quality Assurance (QA) support was provided for the
subsystem and system level fabrication, testing, checkout and integration
of both mechanical and avionics systems, pyro systems, igniter systems,
etc. Stage clearance, component inspection
and quality assurance of propellants, chemicals, composite products,
special material products, pyro devices etc, for launch vehicle and
satellite projects.
Software quality assurance activities for both launch vehicles and satellites, independent testing of application modules relating to navigation auto-pilot and sequencing and post-flight analysis of the software performance were carried out.
Facility readiness reviews during the integration of GSLV-D1, PSLV-C3, stage motors and their sub-systems, T&E of Radars, real time systems, instrumentation systems at liquid propellant storage and at launch complex for servicing stages of PSLV/GSLV have also been carried out. Screening and incoming inspection and test of various types of passive electronic components, active electronic parts such as semiconductor devices, Integrated circuits, memory devices and microwave Activities towards certification to the requirements of ISO-9000 have been initiated at all ISRO Centers and units. ISTRAC, Bangalore obtained ISO-9000 certification during the year.
Towards building reliability into the systems, right from the conceptual stage, Failure Mode Effects and Criticality Analysis (FMECA) of all functionally critical systems in the mission is being carried out. Reliability apportionment among various systems is done based on the overall reliability goals. This is being verified by comparing predicted and demonstrated values of reliability of each system, wherever possible.
Training courses have been conducted periodically on high reliability soldering and electronic interconnection techniques for technicians and online inspectors of the Centre and also external agencies.
Safety Services
The space programme continued to
be free from any major accidents during the year. Safety groups at the
various DOS centres continued to overview and advise on safety aspects
during various stages of the space programme such as design and construction
of facilities, production of solid motors and liquid propellants, manufacturing
of pyrotechnic, ground test of motors etc.
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The successful functioning of the safety systems during the launch of GSLV-D1 was the most significant achievement during the year. The fire fighting services had been on round the clock alert, all through the launch campaign to meet any unexpected situations. The GSLV-D1 safety services encompassed a variety of safety measures during assembly and integration of the solid booster segments, liquid strap-ons, SITVC, liquid stage and Cryo-stage and other pyro-systems many of which were being used for the first time. Similarly, PSLV-C3 mission safety services also encompassed integration of solid boosters, solid strap-ons, RCS, devices have continued. Activities towards certification to the requirements of ISO-9000 have been initiated at all ISRO Centers and units. ISTRAC, Bangalore obtained ISO-9000 certification during the year. Towards building reliability into the systems, right from the conceptual stage, Failure Mode Effects and Criticality Analysis (FMECA) of all functionally critical systems in the mission is being carried out. |
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Fire fighter getting
ready with
breathing apparatus to work in Hazardous environment |
Reliability apportionment among various systems is done based on the overall reliability goals. This is being verified by comparing predicted and demonstrated values of reliability of each system, wherever possible.
Training courses
have been conducted periodically on high reliability soldering and electronic
interconnection techniques for technicians and online inspectors of the
Centre and also external agencies.
Safety Services
The space programme continued to be
free from any major accidents during the year. Safety groups at the
various DOS centres continued to overview and advise on safety aspects
during various stages of the space programme such as design and
construction of facilities, production of solid motors and liquid
propellants, manufacturing of pyrotechnic, ground test of motors etc.
The successful functioning of the safety systems during the launch of GSLV-D1 was the most significant achievement during the year. The fire fighting services had been on round the clock alert, all through the launch campaign to meet any unexpected situations. The GSLV-D1 safety services encompassed a variety of safety measures during assembly and integration of the solid booster segments, liquid strap-ons, SITVC, liquid stage and Cryo-stage and other pyro-systems many of which were being used for the first time. Similarly, PSLV-C3 mission safety services also encompassed integration of solid boosters, solid strap-ons, RCS, SITVC, liquid stage and satellite assembly. The pollution of the immediate environment during handling of chemical was very carefully monitored to ensure that the levels of the toxic substances were within the permitted limits. Special protective clothing such as SCABA (Self-Contained Air Breathing Apparatus) were used during the transfer operations. The transportation of all PSLV and GSLV systems and transportation of Liquid Hydrogen, Liquid Oxygen, UDMH, N2O4, Hydrazine was carried out under the umbrella of a coordinated safety net. Safety support was in place during production of liquid hydrogen, liquid oxygen, and liquid nitrogen. The hot test activities related to steering engine and main engines of cryo-upper stage (CUS) and also the high-pressure engines were conducted under rigorous safety surveillance.
Safety measures were also undertaken during fabrication, thermovac test, vibration tests, high pressure tests and transportation of INSAT-3C and TES satellites.
In view of increased complexity and magnitude of space activities, inter centre as well as inter organisational interactions, existing safety policies have been reviewed. Safety procedures are being further streamlined. A two-day interactive workshop was organised to discuss the experiences and present case studies to infuse knowledge, awareness and dedication towards safety.
Rigorous safety inspections, audits, surprise checks and drills of hazardous areas, electrical installations, laboratory activities, operational facilities have continued. As a part of occupational health and safety programme, personnel working in different hazardous locations have been checked for their health conditions. Safety awareness and promotional activities have been continued through celebration of national safety day, fire service day, issuing safety posters, regular screening of safety films, organising in plant safety training programme, etc. Liaison with the statutory authorities such as Chief Controller of Explosives, Nagpur and state pollution control board has been maintained in order to meet the statutory requirement for various hazardous installations.
Civil Works
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The Civil Engineering Division of the Department of Space carries out planning, designing and execution of all buildings and auxiliary facilities required by DOS. During the year the major civil works that were completed include Thermovac Building for testing IRS-P5, extension to buildings at ISRO Satellite Centre for INSAT |
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Compact
antenna test facility
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related activities, Satellite Control Earth Station at MCF, Hassan, Communication Payload Development Building at Space Applications Centre, Ahmedabad and extension to buildings at IISU. Other works include Honey Comb Lab for VSSC, Low Thrust Engine Test Facility for LPSC, a Road bridge in Sullurpeta, Compact Antenna Test Facility for Space Applications Centre, Ahmedabad.
