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This standard is developed in accordance with the rules given in GB/T 1.1-2009 Directives for standardization - Part 1: Structure and drafting of standards.
This standard replaces SY 6633-2012 Provision of emergency alarms for offshore petroleum installations, and the following main technical changes have been made with respect to SY 6633-2012:
——This standard is changed from a mandatory standard to a voluntary standard;
——The standard is renamed from Provision of emergency alarms for offshore petroleum installations to Guide of emergency alarms for offshore petroleum installations;
——The “Introduction” is added;
——The word "anti-terrorism" is modified as "terrorist activity" in the scope (see clause 1; clause 1 of Edition 2012);
——The “auditory signal” is modified (see Table B.1; Table B.1 of Edition 2012).
This standard was proposed by and is under the jurisdiction of the Technical Committee for Standardization of Safety in Petroleum Industry.
This standard replaces SY 6633-2012.
The previous edition of SY 6633-2012 is as follows:
——SY/T 6633-2005.
Introduction
SY 6633-2012 Provision of emergency alarms for offshore petroleum installations has contributed to solving the inconsistency of alarm signals for offshore petroleum installations since its promulgation, and has strengthened the ability of offshore operators to identify alarm signals. The description of alarm signals in the original standard is imperfect. In combination with the work requirements of transforming 71 mandatory professional standards in the energy field into voluntary professional standards in the No.4 Announcement of the National Energy Administration in 2017, the standard drafting unit carried out the revision work on SY 6633-2012 Provision of emergency alarms for offshore petroleum installations. The revised SY/T 6633-2019 Guide of emergency alarms for offshore petroleum installations has more guiding significance for setting emergency alarm signals for offshore petroleum installations.
Guide of emergency alarms for offshore petroleum installations
1 Scope
This standard specifies the emergency alarm signals for offshore petroleum installations in the event of fire, blowout, oil and gas leak, hydrogen sulfide leak, oil spill, man overboard, terrorist activity, platform abandonment and distress at sea.
This standard is applicable to offshore petroleum installations such as mobile and fixed platforms, oil and gas production facilities, floating production and storage devices, onshore oil (gas) processing terminals, oil (gas) transportation wharf, beach and alongshore installations, and artificial islands engaged in offshore petroleum exploration and development.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 2893 Safety colours
GB 2894 Safety signs and guideline for the use
GB 50116 Code for design of automatic fire alarm system
No. 25 Decree of the State Administration of work Safety Detailed rules for the administration of offshore oil safety
3 Provisions for signals
3.1 Sign signal
Offshore petroleum installations shall be equipped with wind vanes and anemometers, as well as three kind of rectangular warning boards with the words "Hydrogen Sulfide" and "H2S” in green, yellow or red meeting the requirements of the Detailed rules for the administration of offshore oil safety. The font color, size and position of the warning boards shall be set in accordance with GB 2893 and GB 2894.
3.2 Visual signal
Types of dangers of offshore petroleum installations and corresponding visual signals (lights) shall meet those specified in Annex A.
3.3 Auditory signal
Types of dangers of offshore petroleum installations and corresponding auditory signals shall meet those specified in Annex B.
4 Alarm methods
4.1 Sign alarm
On the offshore petroleum installations, a green warning board marked with the word hydrogen sulfide shall be hung if the concentration of hydrogen sulfide in the air is less than 15mg/m3(10ppm), a yellow one if the concentration of hydrogen sulfide in the air is 15mg/m3~30mg/m3(10ppm~20ppm), and a red one if the concentration of hydrogen sulfide in the air is larger than 30mg/m3(20ppm). The warning board shall be set in a conspicuous and visible position.
4.2 Visual alarm
The status lights installed in a fixed way at all places of the offshore petroleum installations shall be used to display the required signals which are shown in Annex A.
4.3 Auditory alarm
4.3.1 Alarm shall be capable of being sent through manual alarm button.
4.3.2 The alarm shall be capable of being automatically triggered by a sensor.
4.3.3 The alarm signals in Annex B shall be switched into the public address system.
4.3.4 Other applicable sounds may be used to send the alarm.
4.4 Broadcast alarm
4.4.1 The alarm signal shall be broadcast to the whole offshore petroleum installation by voice through the public address system.
4.4.2 Alarm telephones installed in relevant parts of the offshore petroleum installation shall be switched into the public address system to give voice alarm.
4.4.3 The speaker shall be set in places where the ambient noise is greater than 60dB in accordance with GB 50116, with the broadcasting sound pressure level at the furthest point within the broadcasting scope 1.5dB(A) higher than that of the background noise.
Foreword i
Introduction ii
1 Scope
2 Normative references
3 Provisions for signals
3.1 Sign signal
3.2 Visual signal
3.3 Auditory signal
4 Alarm methods
4.1 Sign alarm
4.2 Visual alarm
4.3 Auditory alarm
4.4 Broadcast alarm
Annex A (Normative) Visual signals
Annex B (Normative) Auditory signals
Bibliography
